LATAM AIRLINES GROUP S.A. (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line	Label	Object Class	Period Type	Balance	Report ElementName
1	00000001 - Document - Document and Entity Information	Network	*	*	http://latamairlinesgroup.net/role/DocumentAndEntityInformation
2	Implied Table	Table	*	*	implied:Table
3	Document And Entity Information	Abstract			ltm:DocumentAndEntityInformationAbstract
4	Entity Registrant Name	Concept (Text/String)	For Period		dei:EntityRegistrantName
5	Entity Central Index Key	Concept (CIK Number)	For Period		dei:EntityCentralIndexKey
6	Document Type	Concept (Submission Type)	For Period		dei:DocumentType
7	Trading Symbol	Concept (Text/String)	For Period		dei:TradingSymbol
8	Document Period End Date	Concept (Date)	For Period		dei:DocumentPeriodEndDate
9	Amendment Flag	Concept (Yes/No)	For Period		dei:AmendmentFlag
10	Current Fiscal Year End Date	Concept (Month/Day)	For Period		dei:CurrentFiscalYearEndDate
11	Entity a Well-known Seasoned Issuer	Concept (Yes/No)	For Period		dei:EntityWellKnownSeasonedIssuer
12	Entity a Voluntary Filer	Concept (Yes/No)	For Period		dei:EntityVoluntaryFilers
13	Entity's Reporting Status Current	Concept (Yes/No)	For Period		dei:EntityCurrentReportingStatus
14	Entity Filer Category	Concept (Filer Category)	For Period		dei:EntityFilerCategory
15	Entity Emerging Growth Company	Concept (Yes/No)	For Period		dei:EntityEmergingGrowthCompany
16	Entity Shell Company	Concept (Yes/No)	For Period		dei:EntityShellCompany
17	Entity Public Float	Concept (Monetary)	As Of	Credit	dei:EntityPublicFloat
18	Entity Common Stock, Shares Outstanding	Concept (Shares)	As Of		dei:EntityCommonStockSharesOutstanding
19	Document Fiscal Period Focus	Concept (Fiscal Period)	For Period		dei:DocumentFiscalPeriodFocus
20	Document Fiscal Year Focus	Concept (Year)	For Period		dei:DocumentFiscalYearFocus
21	00000002 - Statement - CONSOLIDATED STATEMENT OF FINANCIAL POSITION	Network	*	*	http://latamairlinesgroup.net/role/ConsolidatedStatementOfFinancialPosition
22	Implied Table	Table	*	*	implied:Table
23	Statement of financial position [abstract]	Abstract			ifrs-full:StatementOfFinancialPositionAbstract
24	ASSETS	Abstract			ifrs-full:AssetsAbstract
25	Current assets	Abstract			ifrs-full:CurrentAssetsAbstract
26	Cash and cash equivalents	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
27	Other financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentFinancialAssets
28	Other non-financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentNonfinancialAssets
29	Trade and other accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
30	Accounts receivable from related entities	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherReceivablesDueFromRelatedParties
31	Inventories	Concept (Monetary)	As Of	Debit	ifrs-full:Inventories
32	Current tax assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentTaxAssetsCurrent
33	Total current assets other than non-current assets (or disposal groups) classified as held for sale or as held for distribution to owners	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssetsOtherThanAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
34	Non-current assets (or disposal groups) classified as held for sale or as held for distribution to owners	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
35	Total current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssets
36	Non-current assets	Abstract			ifrs-full:NoncurrentAssetsAbstract
37	Other financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherNoncurrentFinancialAssets
38	Other non-financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherNoncurrentNonfinancialAssets
39	Accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeReceivables
40	Intangible assets other than goodwill	Concept (Monetary)	As Of	Debit	ifrs-full:IntangibleAssetsOtherThanGoodwill
41	Goodwill	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
42	Property, plant and equipment	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
43	Current tax assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentTaxAssetsNoncurrent
44	Deferred tax assets	Concept (Monetary)	As Of	Debit	ifrs-full:DeferredTaxAssets
45	Total non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentAssets
46	Total assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
47	LIABILITIES AND EQUITY	Abstract			ifrs-full:EquityAndLiabilitiesAbstract
48	LIABILITIES	Abstract			ifrs-full:LiabilitiesAbstract
49	Current liabilities	Abstract			ifrs-full:CurrentLiabilitiesAbstract
50	Other financial liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherFinancialLiabilities
51	Trade and other accounts payables	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayables
52	Accounts payable to related entities	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
53	Other provisions	Concept (Monetary)	As Of	Credit	ifrs-full:OtherShorttermProvisions
54	Current tax liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentTaxLiabilitiesCurrent
55	Other non-financial liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherCurrentNonfinancialLiabilities
56	Total current liabilities other than non-current liabilities (or disposal groups) classified as held for sale	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilitiesOtherThanLiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale
57	Liabilities included in disposal groups classified as held for sale	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale
58	Total current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilities
59	Non-current liabilities	Abstract			ifrs-full:NoncurrentLiabilitiesAbstract
60	Other financial liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentFinancialLiabilities
61	Accounts payable	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentPayablesToTradeSuppliers
62	Other provisions	Concept (Monetary)	As Of	Credit	ifrs-full:OtherLongtermProvisions
63	Deferred tax liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilities
64	Employee benefits	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentProvisionsForEmployeeBenefits
65	Other non-financial liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentNonfinancialLiabilities
66	Total non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentLiabilities
67	Total liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
68	EQUITY	Abstract			ifrs-full:EquityAbstract
69	Share capital	Concept (Monetary)	As Of	Credit	ifrs-full:IssuedCapital
70	Retained earnings	Concept (Monetary)	As Of	Credit	ifrs-full:RetainedEarnings
71	Treasury Shares	Concept (Monetary)	As Of	Debit	ifrs-full:TreasuryShares
72	Other reserves	Concept (Monetary)	As Of	Credit	ifrs-full:OtherReserves
73	Parent's ownership interest	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAttributableToOwnersOfParent
74	Non-controlling interest	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
75	Total equity	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
76	Total liabilities and equity	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAndLiabilities
77	00000003 - Statement - CONSOLIDATED STATEMENT OF INCOME BY FUNCTION	Network	*	*	http://latamairlinesgroup.net/role/ConsolidatedStatementOfIncomeByFunction
78	Implied Table	Table	*	*	implied:Table
79	Profit or loss [abstract]	Abstract			ifrs-full:IncomeStatementAbstract
80	Revenue	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
81	Cost of sales	Concept (Monetary)	For Period	Debit	ifrs-full:CostOfSales
82	Gross margin	Concept (Monetary)	For Period	Credit	ifrs-full:GrossProfit
83	Other income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherIncome
84	Distribution costs	Concept (Monetary)	For Period	Debit	ifrs-full:DistributionCosts
85	Administrative expenses	Concept (Monetary)	For Period	Debit	ifrs-full:AdministrativeExpense
86	Other expenses	Concept (Monetary)	For Period	Debit	ifrs-full:OtherExpenseByFunction
87	Other gains/(losses)	Concept (Monetary)	For Period	Credit	ifrs-full:OtherGainsLosses
88	Income from operation activities	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromOperatingActivities
89	Financial income	Concept (Monetary)	For Period	Credit	ifrs-full:FinanceIncome
90	Financial costs	Concept (Monetary)	For Period	Debit	ifrs-full:FinanceCosts
91	Foreign exchange gains/(losses)	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
92	Result of indexation units	Concept (Monetary)	For Period	Debit	ltm:ResultOfIndexationUnits
93	Income (loss) before taxes	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossBeforeTax
94	Income tax expense / benefit	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
95	NET INCOME (LOSS) FOR THE PERIOD	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
96	Income (loss) attributable to owners of the parent	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToOwnersOfParent
97	Income (loss) attributable to non-controlling interest	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToNoncontrollingInterests
98	NET INCOME (LOSS) FOR THE PERIOD	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
99	EARNINGS PER SHARE	Abstract			ifrs-full:EarningsPerShareAbstract
100	Basic earnings (losses) per share (in dollars per share)	Concept (Share)	For Period		ifrs-full:BasicEarningsLossPerShare
101	Diluted earnings (losses) per share (in dollars per share)	Concept (Share)	For Period		ifrs-full:DilutedEarningsLossPerShare
102	00000004 - Statement - CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME	Network	*	*	http://latamairlinesgroup.net/role/ConsolidatedStatementOfComprehensiveIncome
103	Implied Table	Table	*	*	implied:Table
104	Statement of comprehensive income [abstract]	Abstract			ifrs-full:StatementOfComprehensiveIncomeAbstract
105	NET INCOME (LOSS)	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
106	Components of other comprehensive income that will not be reclassified to income before taxes	Abstract			ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
107	Other comprehensive income, before taxes, gains (losses) by new measurements on defined benefit plans	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
108	Total other comprehensive income that will not be reclassified to income before taxes	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTax
109	Components of other comprehensive income that will be reclassified to income before taxes	Abstract			ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTaxAbstract
110	Currency translation differences	Abstract			ifrs-full:ExchangeDifferencesOnTranslationAbstract
111	Gains (losses) on currency translation, before tax	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationBeforeTax
112	Other comprehensive income, before taxes, currency translation differences	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation
113	Cash flow hedges	Abstract			ifrs-full:CashFlowHedgesAbstract
114	Gains (losses) on cash flow hedges before taxes	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnCashFlowHedgesBeforeTax
115	Other comprehensive income (losses), before taxes, cash flow hedges	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeBeforeTaxCashFlowHedges
116	Total other comprehensive income that will be reclassified to income before taxes	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTax
117	Other components of other comprehensive income (loss), before taxes	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeBeforeTax
118	Income tax relating to other comprehensive income that will not be reclassified to income	Abstract			ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossAbstract
119	Income tax relating to new measurements on defined benefit plans	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
120	Accumulate income tax relating to other comprehensive income that will not be reclassified to income	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss
121	Income tax relating to other comprehensive income that will be reclassified to income	Abstract			ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossAbstract
122	Income tax related to cash flow hedges in other comprehensive income	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome
123	Income taxes related to components of other comprehensive income that will be reclassified to income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax
124	Total Other comprehensive income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncome
125	Total comprehensive income (loss)	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
126	Comprehensive income (loss) attributable to owners of the parent	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
127	Comprehensive income (loss) attributable to non-controlling interests	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
128	TOTAL COMPREHENSIVE INCOME (LOSS)	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
129	00000005 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN EQUITY	Network	*	*	http://latamairlinesgroup.net/role/ConsolidatedStatementOfChangesInEquity
130	Statement of changes in equity [table]	Table	*	*	ifrs-full:StatementOfChangesInEquityTable
131	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
132	Equity [member]	Member			ifrs-full:EquityMember
133	Share Capital [Member]	Member			ifrs-full:IssuedCapitalMember
134	Treasury Shares [Member]	Member			ifrs-full:TreasurySharesMember
135	Currency Translation Reserve [Member]	Member			ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember
136	Cash Flow Hedging Reserve [Member]	Member			ifrs-full:ReserveOfCashFlowHedgesMember
137	Actuarial Gains Or Losses On Defined Benefit Plans Reserve [Member]	Member			ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember
138	Shares Based Payments Reserve [Member]	Member			ifrs-full:ReserveOfSharebasedPaymentsMember
139	Other Sundry Reserves [Member]	Member			ltm:ReserveOfOtherSundryReserveMember
140	Total Other Reserve [Member]	Member			ifrs-full:OtherReservesMember
141	Retained Earnings [Member]	Member			ifrs-full:RetainedEarningsMember
142	Parent's Ownership Interest [Member]	Member			ifrs-full:EquityAttributableToOwnersOfParentMember
143	Non-Controlling Interest [Member]	Member			ifrs-full:NoncontrollingInterestsMember
144	Statement of changes in equity [line items]	LineItems			ifrs-full:StatementOfChangesInEquityLineItems
145	Changes in Equity [Roll Forward]	Abstract			ifrs-full:ChangesInEquityAbstract
146	Beginning balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
147	Increase (decrease) by application of new accounting standards	Concept (Monetary)	For Period	Credit	ltm:IncreaseDecreaseByApplicationOfNewAccountingStandards
148	Initial balance modified	Concept (Monetary)	For Period	Credit	ltm:InitialBalanceModified
149	Total increase (decrease ) in equity Comprehensive income Gain (losses )	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
150	Other comprehensive income	Concept (Monetary)	For Period	Credit	ltm:OtherComprehensiveIncome1
151	Total comprehensive income	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
152	Transactions with shareholders	Abstract			ltm:IncreaseDecreaseThroughTransactionsWithOwnersAbstract
153	Equity issue	Concept (Monetary)	For Period	Credit	ifrs-full:IssueOfEquity
154	Dividends	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsPaid
155	Increase (decrease ) through transfers and other changes , equity	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl
156	Total transactions with shareholders	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughTransactionsWithOwners
157	Ending balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
158	00000006 - Statement - CONSOLIDATED STATEMENT OF CASH FLOWS DIRECT - METHOD	Network	*	*	http://latamairlinesgroup.net/role/ConsolidatedStatementOfCashFlowsDirect-Method
159	Implied Table	Table	*	*	implied:Table
160	Statement of cash flows [abstract]	Abstract			ifrs-full:StatementOfCashFlowsAbstract
161	Cash flows from operating activities	Abstract			ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
162	Cash collection from operating activities	Abstract			ifrs-full:ClassesOfCashReceiptsFromOperatingActivitiesAbstract
163	Proceeds from sales of goods and services	Concept (Monetary)	For Period	Debit	ifrs-full:ReceiptsFromSalesOfGoodsAndRenderingOfServices
164	Other cash receipts from operating activities	Concept (Monetary)	For Period	Debit	ifrs-full:OtherCashReceiptsFromOperatingActivities
165	Payments for operating activities	Abstract			ifrs-full:ClassesOfCashPaymentsAbstract
166	Payments to suppliers for goods and services	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsToSuppliersForGoodsAndServices
167	Payments to and on behalf of employees	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsToAndOnBehalfOfEmployees
168	Other payments for operating activities	Concept (Monetary)	For Period	Credit	ifrs-full:OtherCashPaymentsFromOperatingActivities
169	Income taxes refunded (paid)	Concept (Monetary)	For Period	Credit	ifrs-full:IncomeTaxesPaidRefundClassifiedAsOperatingActivities
170	Other cash inflows (outflows)	Concept (Monetary)	For Period	Debit	ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities
171	Net cash flows from operating activities	Concept (Monetary)	For Period		ifrs-full:CashFlowsFromUsedInOperatingActivities
172	Cash flows used in investing activities	Abstract			ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
173	Cash flows from losses of control of subsidiaries or other businesses	Concept (Monetary)	For Period	Credit	ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
174	Cash flows used in the purchase of non-controlling interest	Concept (Monetary)	For Period	Credit	ltm:CashFlowsUsedInPurchaseOfNoncontrollingInterest
175	Other cash receipts from sales of equity or debt instruments of other entities	Concept (Monetary)	For Period	Debit	ifrs-full:OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities
176	Other payments to acquire equity or debt instruments of other entities	Concept (Monetary)	For Period	Credit	ifrs-full:OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities
177	Amounts raised from sale of property, plant and equipment	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
178	Purchases of property, plant and equipment	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
179	Amounts raised from sale of intangible assets	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities
180	Purchases of intangible assets	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
181	Interest received	Concept (Monetary)	For Period	Debit	ifrs-full:InterestReceivedClassifiedAsOperatingActivities
182	Other cash inflows (outflows)	Concept (Monetary)	For Period	Debit	ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities
183	Net cash flow from (used in) investing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInInvestingActivities
184	Cash flows from (used in) financing activities	Abstract			ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
185	Amounts raised from issuance of shares	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromIssuingShares
186	Amounts raised from long-term loans	Concept (Monetary)	For Period	Debit	ltm:ProceedsFromTermLoans
187	Amounts raised from short-term loans	Concept (Monetary)	For Period	Debit	ltm:ProceedsFromShortTermLoans
188	Loans repayments	Concept (Monetary)	For Period	Credit	ltm:RepaymentOfLoans
189	Payments of finance lease liabilities	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsOfFinanceLeaseLiabilitiesClassifiedAsFinancingActivities
190	Dividends paid	Concept (Monetary)	For Period	Credit	ifrs-full:DividendsPaidClassifiedAsFinancingActivities
191	Interest paid	Concept (Monetary)	For Period	Credit	ifrs-full:InterestPaidClassifiedAsFinancingActivities
192	Other cash inflows (outflows)	Concept (Monetary)	For Period	Debit	ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities
193	Net cash flows from (used in) financing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInFinancingActivities
194	Net increase (decrease) in cash and cash equivalents before effect of exchanges rate change	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
195	Effects of variation in the exchange rate on cash and cash equivalents	Concept (Monetary)	For Period	Debit	ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
196	Net increase (decrease) in cash and cash equivalents	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
197	CASH AND CASH EQUIVALENTS AT THE BEGINNING OF PERIOD	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
198	CASH AND CASH EQUIVALENTS AT THE END OF PERIOD	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
199	00000007 - Disclosure - GENERAL INFORMATION	Network	*	*	http://latamairlinesgroup.net/role/GeneralInformation
200	Implied Table	Table	*	*	implied:Table
201	General Information	Abstract			ltm:GeneralInformationAbstract
202	GENERAL INFORMATION	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory
203	00000008 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	Network	*	*	http://latamairlinesgroup.net/role/SummaryOfSignificantAccountingPolicies
204	Implied Table	Table	*	*	implied:Table
205	Summary Of Significant Accounting Policies	Abstract			ltm:SummaryOfSignificantAccountingPoliciesAbstract
206	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
207	00000009 - Disclosure - FINANCIAL RISK MANAGEMENT	Network	*	*	http://latamairlinesgroup.net/role/FinancialRiskManagement
208	Implied Table	Table	*	*	implied:Table
209	Financial Risk Management	Abstract			ltm:FinancialRiskManagementAbstract
210	FINANCIAL RISK MANAGEMENT	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinancialRiskManagementExplanatory
211	00000010 - Disclosure - ACCOUNTING ESTIMATES AND JUDGMENTS	Network	*	*	http://latamairlinesgroup.net/role/AccountingEstimatesAndJudgments
212	Implied Table	Table	*	*	implied:Table
213	Accounting Estimates And Judgments	Abstract			ltm:AccountingEstimatesAndJudgmentsAbstract
214	ACCOUNTING ESTIMATES AND JUDGMENTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
215	00000011 - Disclosure - SEGMENTAL INFORMATION	Network	*	*	http://latamairlinesgroup.net/role/SegmentalInformation
216	Implied Table	Table	*	*	implied:Table
217	Segmental Information	Abstract			ltm:SegmentalInformationAbstract
218	SEGMENTAL INFORMATION	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOperatingSegmentsExplanatory
219	00000012 - Disclosure - CASH AND CASH EQUIVALENTS	Network	*	*	http://latamairlinesgroup.net/role/CashAndCashEquivalents
220	Implied Table	Table	*	*	implied:Table
221	Cash and cash equivalents [abstract]	Abstract			ifrs-full:CashAndCashEquivalentsAbstract
222	CASH AND CASH EQUIVALENTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory
223	00000013 - Disclosure - FINANCIAL INSTRUMENTS	Network	*	*	http://latamairlinesgroup.net/role/FinancialInstruments
224	Implied Table	Table	*	*	implied:Table
225	Financial Instruments	Abstract			ltm:FinancialInstrumentsAbstract
226	FINANCIAL INSTRUMENTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinancialInstrumentsExplanatory
227	00000014 - Disclosure - TRADE AND OTHER ACCOUNTS RECEIVABLE CURRENT, AND NON-CURRENT ACCOUNTS RECEIVABLE	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsReceivableCurrentAndNon-currentAccountsReceivable
228	Implied Table	Table	*	*	implied:Table
229	Trade and other receivables [abstract]	Abstract			ifrs-full:TradeAndOtherReceivablesAbstract
230	TRADE AND OTHER ACCOUNTS RECEIVABLE CURRENT, AND NON-CURRENT ACCOUNTS RECEIVABLE	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
231	00000015 - Disclosure - ACCOUNTS RECEIVABLE FROM/PAYABLE TO RELATED ENTITIES	Network	*	*	http://latamairlinesgroup.net/role/AccountsReceivableFrompayableToRelatedEntities
232	Implied Table	Table	*	*	implied:Table
233	Trade and other receivables [abstract]	Abstract			ifrs-full:TradeAndOtherReceivablesAbstract
234	ACCOUNTS RECEIVABLE FROM/PAYABLE TO RELATED ENTITIES	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfAccoutsReceivablePayableFromToRelatedPartyExplanatory
235	00000016 - Disclosure - INVENTORIES	Network	*	*	http://latamairlinesgroup.net/role/Inventories
236	Implied Table	Table	*	*	implied:Table
237	Inventories	Abstract			ltm:InventoriesAbstract
238	INVENTORIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInventoriesExplanatory
239	00000017 - Disclosure - OTHER FINANCIAL ASSETS	Network	*	*	http://latamairlinesgroup.net/role/OtherFinancialAssets
240	Implied Table	Table	*	*	implied:Table
241	Miscellaneous assets [abstract]	Abstract			ifrs-full:MiscellaneousAssetsAbstract
242	OTHER FINANCIAL ASSETS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherAssetsExplanatory
243	00000018 - Disclosure - OTHER NON-FINANCIAL ASSETS	Network	*	*	http://latamairlinesgroup.net/role/OtherNon-financialAssets
244	Implied Table	Table	*	*	implied:Table
245	Miscellaneous assets [abstract]	Abstract			ifrs-full:MiscellaneousAssetsAbstract
246	OTHER NON-FINANCIAL ASSETS	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfOtherNonFinancialAssetsExplanatory
247	00000019 - Disclosure - NON-CURRENT ASSETS AND DISPOSAL GROUP CLASSIFIED AS HELD FOR SALE	Network	*	*	http://latamairlinesgroup.net/role/Non-currentAssetsAndDisposalGroupClassifiedAsHeldForSale
248	Implied Table	Table	*	*	implied:Table
249	Miscellaneous assets [abstract]	Abstract			ifrs-full:MiscellaneousAssetsAbstract
250	NON-CURRENT ASSETS AND DISPOSAL GROUP CLASSIFIED AS HELD FOR SALE	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory
251	00000020 - Disclosure - INVESTMENTS IN SUBSIDIARIES	Network	*	*	http://latamairlinesgroup.net/role/InvestmentsInSubsidiaries
252	Implied Table	Table	*	*	implied:Table
253	Disclosure of subsidiaries [abstract]	Abstract			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesAbstract
254	INVESTMENTS IN SUBSIDIARIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory
255	00000021 - Disclosure - INTANGIBLE ASSETS OTHER THAN GOODWILL	Network	*	*	http://latamairlinesgroup.net/role/IntangibleAssetsOtherThanGoodwill
256	Implied Table	Table	*	*	implied:Table
257	Disclosure of detailed information about intangible assets [abstract]	Abstract			ifrs-full:DisclosureOfIntangibleAssetsAbstract
258	INTANGIBLE ASSETS OTHER THAN GOODWILL	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfIntangibleAssetsExplanatory
259	00000022 - Disclosure - GOODWILL	Network	*	*	http://latamairlinesgroup.net/role/Goodwill
260	Implied Table	Table	*	*	implied:Table
261	Disclosure of detailed information about intangible assets [abstract]	Abstract			ifrs-full:DisclosureOfIntangibleAssetsAbstract
262	GOODWILL	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfGoodwillExplanatory
263	00000023 - Disclosure - PROPERTY, PLANT AND EQUIPMENT	Network	*	*	http://latamairlinesgroup.net/role/PropertyPlantAndEquipment
264	Implied Table	Table	*	*	implied:Table
265	Property, plant and equipment [abstract]	Abstract			ifrs-full:PropertyPlantAndEquipmentAbstract
266	PROPERTY, PLANT AND EQUIPMENT	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
267	00000024 - Disclosure - CURRENT AND DEFERRED TAXES	Network	*	*	http://latamairlinesgroup.net/role/CurrentAndDeferredTaxes
268	Implied Table	Table	*	*	implied:Table
269	Major components of tax expense (income) [abstract]	Abstract			ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
270	CURRENT AND DEFERRED TAXES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfIncomeTaxExplanatory
271	00000025 - Disclosure - OTHER FINANCIAL LIABILITIES	Network	*	*	http://latamairlinesgroup.net/role/OtherFinancialLiabilities
272	Implied Table	Table	*	*	implied:Table
273	Disclosure of financial liabilities [abstract]	Abstract			ifrs-full:DisclosureOfFinancialLiabilitiesAbstract
274	OTHER FINANCIAL LIABILITIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherLiabilitiesExplanatory
275	00000026 - Disclosure - TRADE AND OTHER ACCOUNTS PAYABLES	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsPayables
276	Implied Table	Table	*	*	implied:Table
277	Trade And Other Accounts Payables	Abstract			ltm:TradeAndOtherAccountsPayablesAbstract
278	TRADE AND OTHER ACCOUNTS PAYABLES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
279	00000027 - Disclosure - OTHER PROVISIONS	Network	*	*	http://latamairlinesgroup.net/role/OtherProvisions
280	Implied Table	Table	*	*	implied:Table
281	Disclosure of other provisions [abstract]	Abstract			ifrs-full:DisclosureOfOtherProvisionsAbstract
282	OTHER PROVISIONS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfProvisionsExplanatory
283	00000028 - Disclosure - OTHER NON-FINANCIAL LIABILITIES	Network	*	*	http://latamairlinesgroup.net/role/OtherNon-financialLiabilities
284	Implied Table	Table	*	*	implied:Table
285	Miscellaneous liabilities [abstract]	Abstract			ifrs-full:MiscellaneousLiabilitiesAbstract
286	OTHER NON-FINANCIAL LIABILITIES	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfNonFinancialOtherLiabilitiesExplanatory
287	00000029 - Disclosure - EMPLOYEE BENEFITS	Network	*	*	http://latamairlinesgroup.net/role/EmployeeBenefits
288	Implied Table	Table	*	*	implied:Table
289	Disclosure of defined benefit plans [abstract]	Abstract			ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
290	EMPLOYEE BENEFITS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
291	00000030 - Disclosure - ACCOUNTS PAYABLE, NON-CURRENT	Network	*	*	http://latamairlinesgroup.net/role/AccountsPayableNon-current
292	Implied Table	Table	*	*	implied:Table
293	Trade and other payables [abstract]	Abstract			ifrs-full:TradeAndOtherPayablesAbstract
294	ACCOUNTS PAYABLE, NON-CURRENT	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfTradeAndOtherPayablesNonCurrentExplanatory
295	00000031 - Disclosure - EQUITY	Network	*	*	http://latamairlinesgroup.net/role/Equity
296	Implied Table	Table	*	*	implied:Table
297	Disclosure of classes of share capital [abstract]	Abstract			ifrs-full:DisclosureOfClassesOfShareCapitalAbstract
298	EQUITY	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
299	00000032 - Disclosure - REVENUE	Network	*	*	http://latamairlinesgroup.net/role/Revenue
300	Implied Table	Table	*	*	implied:Table
301	Revenue [abstract]	Abstract			ifrs-full:RevenueAbstract
302	REVENUE	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRevenueExplanatory
303	00000033 - Disclosure - COSTS AND EXPENSES BY NATURE	Network	*	*	http://latamairlinesgroup.net/role/CostsAndExpensesByNature
304	Implied Table	Table	*	*	implied:Table
305	Material income and expense [abstract]	Abstract			ifrs-full:MaterialIncomeAndExpenseAbstract
306	COSTS AND EXPENSES BY NATURE	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfExpensesByNatureExplanatory
307	00000034 - Disclosure - OTHER INCOME, BY FUNCTION	Network	*	*	http://latamairlinesgroup.net/role/OtherIncomeByFunction
308	Implied Table	Table	*	*	implied:Table
309	Material income and expense [abstract]	Abstract			ifrs-full:MaterialIncomeAndExpenseAbstract
310	OTHER INCOME, BY FUNCTION	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherOperatingIncomeExplanatory
311	00000035 - Disclosure - FOREIGN CURRENCY AND EXCHANGE RATE DIFFERENCES	Network	*	*	http://latamairlinesgroup.net/role/ForeignCurrencyAndExchangeRateDifferences
312	Implied Table	Table	*	*	implied:Table
313	Foreign Currency And Exchange Rate Differences	Abstract			ltm:ForeignCurrencyAndExchangeRateDifferencesAbstract
314	FOREIGN CURRENCY AND EXCHANGE RATE DIFFERENCES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory
315	00000036 - Disclosure - EARNINGS / (LOSS) PER SHARE	Network	*	*	http://latamairlinesgroup.net/role/EarningsLossPerShare
316	Implied Table	Table	*	*	implied:Table
317	Earnings Loss Per Share	Abstract			ltm:EarningsLossPerShareAbstract
318	EARNINGS / (LOSS) PER SHARE	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEarningsPerShareExplanatory
319	00000037 - Disclosure - CONTINGENCIES	Network	*	*	http://latamairlinesgroup.net/role/Contingencies
320	Implied Table	Table	*	*	implied:Table
321	Disclosure of contingent liabilities [abstract]	Abstract			ifrs-full:DisclosureOfContingentLiabilitiesAbstract
322	CONTINGENCIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfContingentLiabilitiesExplanatory
323	00000038 - Disclosure - COMMITMENTS	Network	*	*	http://latamairlinesgroup.net/role/Commitments
324	Implied Table	Table	*	*	implied:Table
325	Commitments	Abstract			ltm:CommitmentsAbstract
326	COMMITMENTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCommitmentsExplanatory
327	00000039 - Disclosure - TRANSACTIONS WITH RELATED PARTIES	Network	*	*	http://latamairlinesgroup.net/role/TransactionsWithRelatedParties
328	Implied Table	Table	*	*	implied:Table
329	Disclosure of transactions between related parties [abstract]	Abstract			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesAbstract
330	TRANSACTIONS WITH RELATED PARTIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRelatedPartyExplanatory
331	00000040 - Disclosure - SHARE-BASED PAYMENTS	Network	*	*	http://latamairlinesgroup.net/role/Share-basedPayments
332	Implied Table	Table	*	*	implied:Table
333	Disclosure of terms and conditions of share-based payment arrangement [abstract]	Abstract			ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract
334	SHARE-BASED PAYMENTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory
335	00000041 - Disclosure - STATEMENT OF CASH FLOWS	Network	*	*	http://latamairlinesgroup.net/role/StatementOfCashFlows
336	Implied Table	Table	*	*	implied:Table
337	Statement Of Cash Flows	Abstract			ltm:DisclosureOfCashFlowStatementAbstract
338	STATEMENT OF CASH FLOWS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCashFlowStatementExplanatory
339	00000042 - Disclosure - THE ENVIRONMENT	Network	*	*	http://latamairlinesgroup.net/role/Environment
340	Implied Table	Table	*	*	implied:Table
341	Environment	Abstract			ltm:DisclosureOfEnvironmentAbstract
342	THE ENVIRONMENT	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInterestInFundsExplanatory
343	00000043 - Disclosure - EVENTS SUBSEQUENT TO THE DATE OF THE FINANCIAL STATEMENTS	Network	*	*	http://latamairlinesgroup.net/role/EventsSubsequentToDateOfFinancialStatements
344	Implied Table	Table	*	*	implied:Table
345	Disclosure of non-adjusting events after reporting period [abstract]	Abstract			ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract
346	EVENTS SUBSEQUENT TO THE DATE OF THE FINANCIAL STATEMENTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
347	00000044 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	Network	*	*	http://latamairlinesgroup.net/role/SummaryOfSignificantAccountingPoliciesPolicies
348	Implied Table	Table	*	*	implied:Table
349	Summary Of Significant Accounting Policies	Abstract			ltm:SummaryOfSignificantAccountingPoliciesAbstract
350	Basis of Preparation	Concept (Text Block (HTML))	For Period		ifrs-full:ExplanationOfMeasurementBasesUsedInPreparingFinancialStatements
351	Basis of Consolidation	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfOtherAccountingPoliciesRelevantToUnderstandingOfFinancialStatements
352	Foreign currency transactions	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
353	Property, plant and equipment	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
354	Intangible assets other than goodwill	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory
355	Goodwill	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForGoodwillExplanatory
356	Borrowing costs	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForBorrowingCostsExplanatory
357	Losses for impairment of non-financial assets	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory
358	Financial assets	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForFinancialAssetsExplanatory
359	Derivative financial instruments and hedging activities	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory
360	Inventories	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
361	Trade and other accounts receivable	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherReceivablesExplanatory
362	Cash and cash equivalents	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
363	Capital	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
364	Trade and other accounts payables	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory
365	Interest-bearing loans	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForLoansAndReceivablesExplanatory
366	Current and deferred taxes	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory
367	Employee benefits	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
368	Provisions	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
369	Revenue from contracts with customers	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
370	Leases	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
371	Non-current assets or disposal groups classified as held for sale	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperationsExplanatory
372	Maintenance	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForRepairsAndMaintenanceExplanatory
373	Environmental costs	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForEnvironmentRelatedExpenseExplanatory
374	00000045 - Disclosure - GENERAL INFORMATION (Tables)	Network	*	*	http://latamairlinesgroup.net/role/GeneralInformationTables
375	Implied Table	Table	*	*	implied:Table
376	General Information	Abstract			ltm:GeneralInformationAbstract
377	Schedule of subsidiaries	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInterestsInOtherEntitiesExplanatory
378	00000046 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	Network	*	*	http://latamairlinesgroup.net/role/SummaryOfSignificantAccountingPoliciesTables
379	Implied Table	Table	*	*	implied:Table
380	Summary Of Significant Accounting Policies	Abstract			ltm:SummaryOfSignificantAccountingPoliciesAbstract
381	Schedule of reconciliation of differences in Income tax system	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfReconciliationOfDifferencesInIncomeTaxSystemExplanatory
382	Schedule of impacts of the adoption of IFRS	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfImpactsOfAdoptionOfIfrsExplanatory
383	Schedule of impairment losses provision	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfImpairmentLossesProvisionExplanatory
384	Schedule of analyzed business models and classified financial assets and liabilities	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfAnalyzedBusinessModelsAndClassifiedFinancialAssetsAndLiabilitiesExplanatory
385	Schedule of effects of changes recognized in the application of IFRS	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfEffectsOfChangesRecognizedInApplicationOfIfrsExplanatory
386	00000047 - Disclosure - FINANCIAL RISK MANAGEMENT (Tables)	Network	*	*	http://latamairlinesgroup.net/role/FinancialRiskManagementTables
387	Disclosure of risk management strategy related to hedge accounting [table]	Table	*	*	ifrs-full:DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingTable
388	Types of risks [axis]	Axis			ifrs-full:TypesOfRisksAxis
389	Risks [member]	Member			ifrs-full:TypesOfRisksMember
390	Fuel-Price Risk [Member]	Member			ltm:FuelPriceRiskMember
391	Foreign Exchange Rate Risk [Member]	Member			ifrs-full:CurrencyRiskMember
392	Interest Rate Risk [Member]	Member			ifrs-full:InterestRateRiskMember
393	Disclosure of risk management strategy related to hedge accounting [line items]	LineItems			ifrs-full:DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingLineItems
394	Schedule of level of hedge	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutHedgesExplanatory
395	Schedule of sensitivity analysis	Concept (Text Block (HTML))	For Period		ifrs-full:SensitivityAnalysisForEachTypeOfMarketRisk
396	Schedule of class of liability for the analysis of liquidity risk ordered by date of maturity	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory
397	Schedule of classification of financial instruments at fair value	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFairValueOfFinancialInstrumentsExplanatory
398	Schedule of financial instruments which are not recorded at fair value	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfFinancialInstrumentsNotRecordedInFairValueExplanatory
399	00000048 - Disclosure - ACCOUNTING ESTIMATES AND JUDGMENTS (Tables)	Network	*	*	http://latamairlinesgroup.net/role/AccountingEstimatesAndJudgmentsTables
400	Implied Table	Table	*	*	implied:Table
401	Accounting Estimates And Judgments	Abstract			ltm:AccountingEstimatesAndJudgmentsAbstract
402	Schedule for intangible assets with an indefinite useful life assigned to CGU	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesExplanatory
403	Schedule of consumer price index	Concept (Text Block (HTML))	For Period		ltm:ScheduleOfConsumerPriceIndex
404	Schedule of consolidated effects of IAS 29 adjustment	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfConsolidatedEffectsOfIasAdjustmentExplanatory
405	00000049 - Disclosure - SEGMENTAL INFORMATION (Tables)	Network	*	*	http://latamairlinesgroup.net/role/SegmentalInformationTables
406	Implied Table	Table	*	*	implied:Table
407	Segmental Information	Abstract			ltm:SegmentalInformationAbstract
408	Schedule of financial statements of operating segment	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSegmentsMajorCustomersExplanatory
409	Schedule of revenues by geographic area	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfGeographicalAreasExplanatory
410	00000050 - Disclosure - CASH AND CASH EQUIVALENTS (Tables)	Network	*	*	http://latamairlinesgroup.net/role/CashAndCashEquivalentsTables
411	Implied Table	Table	*	*	implied:Table
412	Cash and cash equivalents [abstract]	Abstract			ifrs-full:CashAndCashEquivalentsAbstract
413	Schedule of cash and cash equivalents	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfCashAndCashEquivalentsExplanatory1
414	Schedule of cash and cash equivalents denominated by currencies	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfCashAndCashEquivalentsCategoriesByCurrenciesExplanatory
415	00000051 - Disclosure - FINANCIAL INSTRUMENTS (Tables)	Network	*	*	http://latamairlinesgroup.net/role/FinancialInstrumentsTables
416	Implied Table	Table	*	*	implied:Table
417	Financial Instruments	Abstract			ltm:FinancialInstrumentsAbstract
418	Schedule of financial instruments by category	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory
419	Schedule of financial instruments by currency	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfFinancialInstrumentsAtFairValueByCurrencyExplanatory
420	00000052 - Disclosure - TRADE AND OTHER ACCOUNTS RECEIVABLE CURRENT, AND NON-CURRENT ACCOUNTS RECEIVABLE (Tables)	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsReceivableCurrentAndNon-currentAccountsReceivableTables
421	Implied Table	Table	*	*	implied:Table
422	Trade and other receivables [abstract]	Abstract			ifrs-full:TradeAndOtherReceivablesAbstract
423	Schedule of trade and other accounts receivable	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfTradeAndOtherAccountsReceivableExplanatory
424	Schedule of matured accounts receivable and impaired	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedExplanatory
425	Schedule of expected credit losses	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfExpectedCreditLossesExplanatory
426	Schedule of trade and other accounts receivable and non-current accounts receivable	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfTradeAndOtherReceivablesCategoriesByCurrencyBalanceExplanatory
427	Schedule of allowance for impairment loss of trade and other accounts receivables	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfAllowanceForImpairmentLossOfTradeAndOtherAccountsReceivablesExplanatory
428	Schedule of accounts receivable categories	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfCategoriesAccountsReceivableExplanatory
429	00000053 - Disclosure - ACCOUNTS RECEIVABLE FROM/PAYABLE TO RELATED ENTITIES (Tables)	Network	*	*	http://latamairlinesgroup.net/role/AccountsReceivableFrompayableToRelatedEntitiesTables
430	Implied Table	Table	*	*	implied:Table
431	Trade and other receivables [abstract]	Abstract			ifrs-full:TradeAndOtherReceivablesAbstract
432	Schedule of accounts receivable to related party	Concept (Text Block (HTML))	For Period		ltm:DescriptionOfAccountsReceivableTransactionsWithRelatedParty
433	Schedule of accounts payable to related party	Concept (Text Block (HTML))	For Period		ltm:DescriptionOfAccountsPayableTransactionsWithRelatedParty
434	00000054 - Disclosure - INVENTORIES (Tables)	Network	*	*	http://latamairlinesgroup.net/role/InventoriesTables
435	Implied Table	Table	*	*	implied:Table
436	Inventories	Abstract			ltm:InventoriesAbstract
437	Schedule of composition of inventories	Concept (Text Block (HTML))	For Period		ltm:DisclosureOCompositionOffInventoriesExplanatory
438	Schedule of inventory average cost, net of provision for obsolescence	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfInventoriesAverageCostNetOfProvisionForObSolescenceExplanatory
439	00000055 - Disclosure - OTHER FINANCIAL ASSETS (Tables)	Network	*	*	http://latamairlinesgroup.net/role/OtherFinancialAssetsTables
440	Implied Table	Table	*	*	implied:Table
441	Miscellaneous assets [abstract]	Abstract			ifrs-full:MiscellaneousAssetsAbstract
442	Schedule of composition of other financial assets	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfCompositionOfOtherAssetsExplanatory
443	00000056 - Disclosure - OTHER NON-FINANCIAL ASSETS (Tables)	Network	*	*	http://latamairlinesgroup.net/role/OtherNon-financialAssetsTables
444	Implied Table	Table	*	*	implied:Table
445	Miscellaneous assets [abstract]	Abstract			ifrs-full:MiscellaneousAssetsAbstract
446	Schedule of composition of Other non-financial assets	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfCompositionOfOtherNonFinancialAssetsExplanatory
447	Schedule of movement of Contracts assets	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfMovementOfContractsAssetsExplanatory
448	00000057 - Disclosure - NON-CURRENT ASSETS AND DISPOSAL GROUP CLASSIFIED AS HELD FOR SALE (Tables)	Network	*	*	http://latamairlinesgroup.net/role/Non-currentAssetsAndDisposalGroupClassifiedAsHeldForSaleTables
449	Implied Table	Table	*	*	implied:Table
450	Miscellaneous assets [abstract]	Abstract			ifrs-full:MiscellaneousAssetsAbstract
451	Schedule of non-current assets and in disposal groups held for sale	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale1Explanatory
452	Schedule of fleet classified as non-current assets or groups of assets for disposal classified as held	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale2Explanatory
453	00000058 - Disclosure - INVESTMENTS IN SUBSIDIARIES (Tables)	Network	*	*	http://latamairlinesgroup.net/role/InvestmentsInSubsidiariesTables
454	Implied Table	Table	*	*	implied:Table
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457	Schedule of financial statements of subsidiaries	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCompositionOfGroupExplanatory
458	Schedule of non-controlling interest of subsidiary	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfNonControllingInterestExplanatory
459	00000059 - Disclosure - INTANGIBLE ASSETS OTHER THAN GOODWILL (Tables)	Network	*	*	http://latamairlinesgroup.net/role/IntangibleAssetsOtherThanGoodwillTables
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463	Schedule of movement in Intangible assets	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfIntangibleAssetsMaterialToEntityExplanatory
464	00000060 - Disclosure - GOODWILL (Tables)	Network	*	*	http://latamairlinesgroup.net/role/GoodwillTables
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467	Schedule of movement of goodwill	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillExplanatory
468	Schedule of recoverable values categories by CGU	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillWithIndefiniteUsefulLivesExplanatory
469	Schedule of sensitivity analysis of goodwill by CGU	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillWithSensitivitySnalysisExplanatory
470	00000061 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Tables)	Network	*	*	http://latamairlinesgroup.net/role/PropertyPlantAndEquipmentTables
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474	Schedule of movement of property, plant and equipment	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfDetailedInformationOfPropertyPlantAndEquipmentExplanatory
475	Schedule of composition of the fleet	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfDetailedInformationOfPropertyPlantAndEquipmentCompositionOfTheFleet
476	Schedule of method used for the depreciation of property, plant and equipment	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfDetailedInformationOfUsefulLifePropertyPlantAndEquipment
477	Schedule of property, plant and equipment pledged as guarantee	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfDetailedInformationOfPropertyPlantAndEquipmentPledgedAsGuarantee
478	Schedule of fully depreciated assets and commitments for future purchases	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfDetailedInformationOfFullyDepreciatedAssetsAndCommitmentsForFuturePurchases
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480	Schedule of capitalized interest costs	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfDetailedInformationOfCapitalizedInterestCostsWithRespectToPropertyPlantAndEquipment
481	Schedule of financial leases	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeExplanatory
482	Schedule of minimum payments under financial leases	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfMinimumLesseeExplanatory
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487	Schedule of composition of current tax liabilities	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfInformationForCompositionOfCurrentTaxLiabilitiesExplanatory
488	Schedule of balances of deferred tax are	Concept (Text Block (HTML))	For Period		ltm:DisclosureForBalancesOfDeferredTaxAssetsAndLiabilitiesExplanatory
489	Schedule of movements of deferred tax assets and liabilities	Concept (Text Block (HTML))	For Period		ltm:DisclosureForMovementOfDeferredTaxAssetsAndLiabilitiesExplanatory
490	Schedule of deferred tax assets not recognized	Concept (Text Block (HTML))	For Period		ltm:DisclosureForDeferredTaxAssetsNotRecognizedExplanatory
491	Schedule of deferred tax expense and current income taxes	Concept (Text Block (HTML))	For Period		ltm:DisclosureForDeferredTaxExpenseAndCurrentIncomeTaxesExplanatory
492	Schedule of composition of income tax expense (income)	Concept (Text Block (HTML))	For Period		ltm:DisclosureForCompositionOfIncomeTaxExpenseExplanatory
493	Schedule of profit before tax by the legal tax rate	Concept (Text Block (HTML))	For Period		ltm:DisclosureForProfitBeforeTaxByLegalTaxRateExplanatory
494	Schedule of deferred taxes related to items charged to net equity	Concept (Text Block (HTML))	For Period		ltm:DisclosureForDeferredTaxesRelatedToItemsChargedToNetEquityExplanatory
495	00000063 - Disclosure - OTHER FINANCIAL LIABILITIES (Tables)	Network	*	*	http://latamairlinesgroup.net/role/OtherFinancialLiabilitiesTables
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498	Schedule of composition of other financial liabilities	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfCompositionOfOtherLiabilitiesExplanatory
499	Schedule of composition of interest bearing loans	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfCompositionOfInterestBeraringLoansExplanatory
500	Schedule of currency balances of interest bearing loans	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfInterestBeraringLoansCategoriesByCurrencyBalanceExplanatory
501	Schedule of interest-bearing loans catrgories by installments	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfInterestBeraringLoansCategoriesByInstallmentsExplanatory
502	Schedule of hedge derivatives	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfHedgeAccountingExplanatory
503	Schedule of derivatives of non coverage	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfDerivativesOfNonCoverageExplanatory
504	Schedule of hedging operation	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory
505	Schedule of comprehensive income	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInformationAboutAmountsThatAffectedStatementOfComprehensiveIncomeAsResultOfHedgeAccountingExplanatory
506	00000064 - Disclosure - TRADE AND OTHER ACCOUNTS PAYABLES (Tables)	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsPayablesTables
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509	Schedule of composition of trade and other accounts payables & accrued liabilities	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfCompositionOfTradeAndOtherPayablesExplanatory
510	Schedule of current trade and other accounts payables	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherCurrentLiabilitiesExplanatory
511	Schedule of composition of current trade and other accounts payable	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfCompositionOfOtherAccountsPayableAndCurrentLiabilitiesExplanatory
512	Schedule of composition of accrued liabilities	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory
513	00000065 - Disclosure - OTHER PROVISIONS (Tables)	Network	*	*	http://latamairlinesgroup.net/role/OtherProvisionsTables
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517	Schedule of movement of other provisions	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfMovementOfOtherProvisionsExplanatory
518	00000066 - Disclosure - OTHER NON-FINANCIAL LIABILITIES (Tables)	Network	*	*	http://latamairlinesgroup.net/role/OtherNon-financialLiabilitiesTables
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521	Schedule of composition of non financial liabilities	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfCompositionOfNonFinancialOtherLiabilitiesExplanatory
522	Schedule of movement of other-non financial liabilities	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfMovementOfOthernonFinancialLiabilitiesExplanatory
523	00000067 - Disclosure - EMPLOYEE BENEFITS (Tables)	Network	*	*	http://latamairlinesgroup.net/role/EmployeeBenefitsTables
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527	Schedule of movement of employee benefits	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
528	Schedule of principal assumptions	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfActuarialAssumptionsExplanatory
529	Schedule of sensitivity analysis actuarial assumptions	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
530	Schedule of liability for short-term	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfAdditionalInformationAboutDefinedBenefitPlansExplanatory
531	Schedule of employment expenses	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfAdditionalInformationAboutDefinedBenefitPlans1Explanatory
532	00000068 - Disclosure - ACCOUNTS PAYABLE, NON-CURRENT (Tables)	Network	*	*	http://latamairlinesgroup.net/role/AccountsPayableNon-currentTables
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535	Schedule of accounts payable, non-current	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfTradePayablesNonCurrentExplanatory
536	00000069 - Disclosure - EQUITY (Tables)	Network	*	*	http://latamairlinesgroup.net/role/EquityTables
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538	Reserves within equity [axis]	Axis			ifrs-full:ReservesWithinEquityAxis
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543	Schedule of movement of fully paid shares	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfInformationForMovementOfFullyPaidSharesExplanatory
544	Schedule of movement of reserves of share-based payments	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory
545	Schedule of balance of other sundry reserves	Concept (Text Block (HTML))	For Period		ltm:DisclosureForBalanceOfOtherSundryReservesExplanatory
546	Schedule of movement of reserves with effect in other comprehensive income	Concept (Text Block (HTML))	For Period		ltm:DisclosureForMovementOfReservesWithEffectInOtherComprehensiveIncome
547	Schedule of movement of retained earnings	Concept (Text Block (HTML))	For Period		ltm:DisclosureForMovementOfRetainedEarnings
548	Schedule of dividends	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfDetailedInformationAboutDividend
549	00000070 - Disclosure - REVENUE (Tables)	Network	*	*	http://latamairlinesgroup.net/role/RevenueTables
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553	00000071 - Disclosure - COSTS AND EXPENSES BY NATURE (Tables)	Network	*	*	http://latamairlinesgroup.net/role/CostsAndExpensesByNatureTables
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557	Schedule of depreciation and amortisation expense	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDepreciationAndAmortisationExpenseExplanatory
558	Schedule of finance costs	Concept (Text Block (HTML))	For Period		ltm:DisclosureofFinanceCosts
559	00000072 - Disclosure - OTHER INCOME, BY FUNCTION (Tables)	Network	*	*	http://latamairlinesgroup.net/role/OtherIncomeByFunctionTables
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563	00000073 - Disclosure - FOREIGN CURRENCY AND EXCHANGE RATE DIFFERENCES (Tables)	Network	*	*	http://latamairlinesgroup.net/role/ForeignCurrencyAndExchangeRateDifferencesTables
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567	Schedule of exchange differences	Concept (Text Block (HTML))	For Period		ltm:DescriptionOfCurrencyInWhichSupplementaryInformationIsDisplayedExplanatory
568	00000074 - Disclosure - EARNINGS / (LOSS) PER SHARE (Tables)	Network	*	*	http://latamairlinesgroup.net/role/EarningsLossPerShareTables
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575	Schedule of operating leases	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeExplanatory1
576	Schedule of minimum future lease payments not yet payable	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfMinimumFutureLeasePaymentsNotYetPayableExplanatory
577	Schedule of minimum lease payments charged to income	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfMinimumLeasePaymentsChargedToIncomeExplanatory
578	Schedule of existing letters of credit related to operating leasing	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfOperatingLeaseByLesseeExplanatory
579	Schedule of letters of credit, certificates of deposits and warranty insurance policies	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfLettersOfCreditCertificatesOfDepositsAndWarrantyInsurancePoliciesExplanatory
580	00000076 - Disclosure - TRANSACTIONS WITH RELATED PARTIES (Tables)	Network	*	*	http://latamairlinesgroup.net/role/TransactionsWithRelatedPartiesTables
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584	Schedule of key management personnel compensation	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory
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589	Schedule of dividends paid to minority shareholders	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDividendsExplanatory
590	Schedule of liabilities arising from financing activities	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfLiabilitiesArisingFromFinancingActivitiesExplanatory
591	Schedule of statement of consolidated cash flow	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfStatementOfConsolidatedCashFlowExplanatory
592	Schedule of consolidated statement of cash flow for the exercise	Concept (Text Block (HTML))	For Period		ltm:DisclosureOfConsolidatedStatementOfCashFlowForExerciseExplanatory
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594	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
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597	Latam Travel Chile S.A. and Subsidiaries [Member]	Member			ltm:LatamTravelChileSAandSubsidaryMember
598	Inmobiliaria Aeronautica S.A. [Member]	Member			ltm:InmobiliariaAeronauticaSAMember
599	Lan Pax Group S.A. and Subsidiaries [Member]	Member			ltm:LanPaxGroupSAandSubsidiariesMember
600	Lan Peru S.A. [Member]	Member			ltm:LanPeruSAMember
601	Lan Cargo S.A. [Member]	Member			ltm:LanCargoSAMember
602	Connecta Corporation [Member]	Member			ltm:ConnectaCorporationMember
603	Prime Airport Services Inc. and Subsidary [Member]	Member			ltm:PrimeAirportServicesIncandSubsidaryMember
604	Transporte Aereo S.A. [Member]	Member			ltm:TransporteAereoSAMember
605	Fast Air Almacenes de Carga S.A. [Member]	Member			ltm:FastAirAlmacenesdeCargaSAMember
606	Laser Cargo S.R.L. [Member]	Member			ltm:LaserCargoSRLMember
607	Lan Cargo Overseas Limited and Subsidiaries [Member]	Member			ltm:LanCargoOverseasLimitedandSubsidiariesMember
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610	Technical Trainning LATAM S.A. [Member]	Member			ltm:TechnicalTrainningLATAMSAMember
611	Latam Finance Limited [Member]	Member			ltm:LatamFinanceLimitedMember
612	Peuco Finance Limited [Member]	Member			ltm:PeucoFinanceLimitedMember
613	Profesional Airline Services INC. [Member]	Member			ltm:ProfesionalAirlineServicesINCMember
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623	00000080 - Disclosure - GENERAL INFORMATION (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/GeneralInformationDetails1
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625	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
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628	Inmobiliaria Aeronautica S.A. [Member]	Member			ltm:InmobiliariaAeronauticaSAMember
629	Lan Pax Group S.A. and Subsidiaries [Member]	Member			ltm:LanPaxGroupSAandSubsidiariesMember
630	Lan Peru S.A. [Member]	Member			ltm:LanPeruSAMember
631	Lan Chile Investments Limited and Subsidiary [Member]	Member			ltm:LanChileInvestmentsLimitedandSubsidiaryMember
632	Lan Cargo S.A. [Member]	Member			ltm:LanCargoSAMember
633	Connecta Corporation [Member]	Member			ltm:ConnectaCorporationMember
634	Prime Airport Services Inc. and Subsidary [Member]	Member			ltm:PrimeAirportServicesIncandSubsidaryMember
635	Transporte Aereo S.A. [Member]	Member			ltm:TransporteAereoSAMember
636	Aircraft International Leasing Limited [Member]	Member			ltm:AircraftInternationalLeasingLimitedMember
637	Fast Air Almacenes de Carga S.A. [Member]	Member			ltm:FastAirAlmacenesdeCargaSAMember
638	Laser Cargo S.R.L. [Member]	Member			ltm:LaserCargoSRLMember
639	Lan Cargo Overseas Limited and Subsidiaries [Member]	Member			ltm:LanCargoOverseasLimitedandSubsidiariesMember
640	Lan Cargo Inversiones S.A. and Subsidary [Member]	Member			ltm:LanCargoInversionesSAandSubsidaryMember
641	Inversiones Lan S.A. and Subsidiaries [Member]	Member			ltm:InversionesLanSAandSubsidiariesMember
642	Technical Trainning LATAM S.A. [Member]	Member			ltm:TechnicalTrainningLATAMSAMember
643	Latam Finance Limited [Member]	Member			ltm:LatamFinanceLimitedMember
644	Peuco Finance Limited [Member]	Member			ltm:PeucoFinanceLimitedMember
645	Profesional Airline Services INC. [Member]	Member			ltm:ProfesionalAirlineServicesINCMember
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670	Deferred tax liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilities
671	EQUITY	Abstract			ifrs-full:EquityAbstract
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674	Disclosure of financial assets that are either past due or impaired [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
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678	Maturity [axis]	Axis			ifrs-full:MaturityAxis
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954	Derivatives to BRL	Concept (Monetary)	As Of	Credit	ltm:DerivativesContractAmount
955	Percentage of fixed to fluctuations in interest rate	Concept (Percent)	For Period		ltm:PercentageOfFixedToFluctuationsInInterestRate
956	Liquid funds balance	Concept (Monetary)	As Of	Credit	ltm:LiquidFundsBalance
957	Undrawn committed credit line	Concept (Monetary)	As Of	Credit	ltm:UndrawnCommittedCreditLine
958	Derivative margin guarantees for cash and stand-by letters of credit	Concept (Monetary)	As Of	Credit	ltm:DerivativeMarginGuaranteesForCashAndStandByLettersOfCredit
959	Notional amount	Concept (Monetary)	As Of		ifrs-full:NotionalAmount
960	00000095 - Disclosure - ACCOUNTING ESTIMATES AND JUDGMENTS (Details)	Network	*	*	http://latamairlinesgroup.net/role/AccountingEstimatesAndJudgmentsDetails
961	Disclosure of detailed information about intangible assets [table]	Table	*	*	ifrs-full:DisclosureOfIntangibleAssetsTable
962	Classes of intangible assets other than goodwill [axis]	Axis			ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
963	Intangible assets other than goodwill [member]	Member			ifrs-full:IntangibleAssetsOtherThanGoodwillMember
964	Airport Slots [Member]	Member			ltm:AirportsLotsMember
965	Loyalty Program [Member]	Member			ltm:LoyaltyProgramMember
966	Cash-generating units [axis]	Axis			ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis
967	Entity's total for cash-generating units [member]	Member			ifrs-full:EntitysTotalForCashgeneratingUnitsMember
968	Air Transport CGU [Member]	Member			ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember
969	Coalition and Loyalty Program Multiplus CGU [Member]	Member			ltm:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLives1Member
970	Disclosure of detailed information about intangible assets [line items]	LineItems			ifrs-full:DisclosureOfIntangibleAssetsLineItems
971	Intangible assets with indefinite useful life	Concept (Monetary)	As Of	Debit	ifrs-full:IntangibleAssetsWithIndefiniteUsefulLife
972	00000097 - Disclosure - ACCOUNTING ESTIMATES AND JUDGMENTS (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/AccountingEstimatesAndJudgmentsDetails2
973	Implied Table	Table	*	*	implied:Table
974	Accounting Estimates And Judgments	Abstract			ltm:AccountingEstimatesAndJudgmentsAbstract
975	Assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
976	Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
977	Retained earings	Concept (Monetary)	As Of	Credit	ltm:RetainedEarningsAccumulatedDeficit1
978	Income (Loss)	Concept (Monetary)	For Period	Credit	ltm:NetIncomeLoss1
979	00000098 - Disclosure - ACCOUNTING ESTIMATES AND JUDGMENTS (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/AccountingEstimatesAndJudgmentsDetailsNarrative
980	Disclosure of detailed information about intangible assets [table]	Table	*	*	ifrs-full:DisclosureOfIntangibleAssetsTable
981	Classes of intangible assets other than goodwill [axis]	Axis			ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
982	Intangible assets other than goodwill [member]	Member			ifrs-full:IntangibleAssetsOtherThanGoodwillMember
983	Airport Slots [Member]	Member			ltm:AirportsLotsMember
984	LATAM Fidelidade and Multiplus Loyalty Program [Member]	Member			ltm:LATAMFidelidadeAndMultiplusMember
985	Loyalty Program [Member]	Member			ltm:LoyaltyProgramMember
986	LATAM Pass Loyalty Program [Member]	Member			ltm:LATAMPassLoyaltyProgramMember
987	Trade Marks [Member]	Member			ifrs-full:BrandNamesMember
988	Cash-generating units [axis]	Axis			ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis
989	Entity's total for cash-generating units [member]	Member			ifrs-full:EntitysTotalForCashgeneratingUnitsMember
990	Air Transport CGU [Member]	Member			ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember
991	Coalition and Loyalty Program Multiplus CGU [Member]	Member			ltm:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLives1Member
992	Disclosure of detailed information about intangible assets [line items]	LineItems			ifrs-full:DisclosureOfIntangibleAssetsLineItems
993	Goodwill	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
994	Intangible assets with indefinite useful life	Concept (Monetary)	As Of	Debit	ifrs-full:IntangibleAssetsWithIndefiniteUsefulLife
995	Estimated useful life of brands from indefinite useful life	Concept (xbrli:durationItemType)	For Period		ltm:IntangibleAssetsWithIndefiniteUsefulLifePeriod
996	Deferred tax assets	Concept (Monetary)	As Of	Debit	ifrs-full:DeferredTaxAssets
997	Recognize deferred tax assets for tax losses	Concept (Monetary)	For Period		ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
998	Deferred revenue	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredIncome
999	Description of change in ticket usage	Concept (Text/String)	For Period		ltm:DescriptionOfChangeInTicketUsage
1000	Probable change in deferred revenue	Concept (Monetary)	As Of	Credit	ltm:ProbableChangeInDeferredRevenue
1001	Impact of fair value of unused kilometers	Concept (Monetary)	As Of	Credit	ltm:ImpactOfFairValueOfUnusedKilometers
1002	00000099 - Disclosure - SEGMENTAL INFORMATION (Details)	Network	*	*	http://latamairlinesgroup.net/role/SegmentalInformationDetails
1003	Disclosure of operating segments [table]	Table	*	*	ifrs-full:DisclosureOfOperatingSegmentsTable
1004	Segment consolidation items [axis]	Axis			ifrs-full:SegmentConsolidationItemsAxis
1005	Entity's total for segment consolidation items [member]	Member			ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
1006	Air Transportation [Member]	Member			ltm:AirTransportationMember
1007	Coalition And Loyalty Program Multiplus [Member]	Member			ltm:CoalitionAndLoyaltyProgramMultiplusMember
1008	Eliminations [Member]	Member			ltm:EliminationsMember
1009	Operating Segments [Member]	Member			ifrs-full:OperatingSegmentsMember
1010	Major Customers [Axis]	Axis			ifrs-full:MajorCustomersAxis
1011	Customers [member]	Member			ifrs-full:MajorCustomersMember
1012	Passenger [Member]	Member			ltm:Passenger1Member
1013	Freight [Member]	Member			ltm:FreightMember
1014	Disclosure of operating segments [line items]	LineItems			ifrs-full:DisclosureOfOperatingSegmentsLineItems
1015	Income from ordinary activities from external customers	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
1016	Income from ordinary activities from transactions with other operating segments	Concept (Monetary)	For Period	Credit	ltm:IncomeFromOrdinaryActivitiesFromTransactionsWithOtherOperatingSegments
1017	Other operating income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherIncome
1018	Interest income	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromInterest
1019	Interest expense	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpense
1020	Total net interest expense	Concept (Monetary)	For Period	Credit	ifrs-full:InterestRevenueExpense
1021	Depreciation and amortization	Concept (Monetary)	For Period	Debit	ifrs-full:DepreciationAndAmortisationExpense
1022	Material non-cash items other than depreciation and amortization	Concept (Monetary)	For Period	Debit	ifrs-full:OtherMaterialNoncashItems
1023	Disposal of fixed assets and inventory losses	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets
1024	Doubtful accounts	Concept (Monetary)	For Period	Debit	ltm:DoubtfulDebts
1025	Exchange differences	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationNetOfTax
1026	Result of indexation units	Concept (Monetary)	For Period	Debit	ltm:ResultOfIndexationUnits
1027	Income (loss) atributable to owners of the parents	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToOwnersOfParent
1028	Participation of the entity in the income of associates	Concept (Monetary)	For Period	Credit	ifrs-full:OtherIncomeExpenseFromSubsidiariesJointlyControlledEntitiesAndAssociates
1029	Expenses for income tax	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
1030	NET INCOME (LOSS)	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
1031	Assets of segment	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
1032	Segment liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
1033	Amount of non-current asset additions	Concept (Monetary)	For Period	Debit	ifrs-full:AdditionsToNoncurrentAssets
1034	Property, plant and equipment	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
1035	Intangibles other than goodwill	Concept (Monetary)	As Of	Debit	ifrs-full:IntangibleAssetsOtherThanGoodwill
1036	Purchase of non-monetary assets of segment	Concept (Monetary)	As Of	Credit	ltm:PurchaseOfNonMonetaryAssetsOfSegment
1037	00000100 - Disclosure - SEGMENTAL INFORMATION (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/SegmentalInformationDetails1
1038	Disclosure of operating segments [table]	Table	*	*	ifrs-full:DisclosureOfOperatingSegmentsTable
1039	Segment consolidation items [axis]	Axis			ifrs-full:SegmentConsolidationItemsAxis
1040	Entity's total for segment consolidation items [member]	Member			ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
1041	Air Transportation [Member]	Member			ltm:AirTransportationMember
1042	Coalition And Loyalty Program Multiplus [Member]	Member			ltm:CoalitionAndLoyaltyProgramMultiplusMember
1043	Eliminations [Member]	Member			ltm:EliminationsMember
1044	Operating Segments [Member]	Member			ifrs-full:OperatingSegmentsMember
1045	Disclosure of operating segments [line items]	LineItems			ifrs-full:DisclosureOfOperatingSegmentsLineItems
1046	Net cash flows from	Abstract			ltm:NetCashFlowsFromAbstract
1047	Purchases of property, plant and equipment	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
1048	Additions associated with maintenance	Concept (Monetary)	For Period	Credit	ltm:AdditionsAssociatedWithMaintenance
1049	Other additions	Concept (Monetary)	For Period	Credit	ltm:OtherAdditions
1050	Purchases of intangible assets	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
1051	Net cash flows from (used in) operating activities	Concept (Monetary)	For Period		ifrs-full:CashFlowsFromUsedInOperatingActivities
1052	Net cash flow from (used in) investing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInInvestingActivities
1053	Net cash flows from (used in) financing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInFinancingActivities
1054	00000101 - Disclosure - SEGMENTAL INFORMATION (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/SegmentalInformationDetails2
1055	Disclosure of geographical areas [table]	Table	*	*	ifrs-full:DisclosureOfGeographicalAreasTable
1056	Geographical areas [axis]	Axis			ifrs-full:GeographicalAreasAxis
1057	Geographical areas [member]	Member			ifrs-full:GeographicalAreasMember
1058	Peru	Member			country:PE
1059	Argentina	Member			country:AR
1060	U.S.A.	Member			country:US
1061	Europe	Member			ltm:Europe1Member
1062	Colombia	Member			country:CO
1063	Brazil	Member			country:BR
1064	Ecuador	Member			country:EC
1065	Chile	Member			country:CL
1066	Asia Pacific and rest of Latin America	Member			ltm:AsiaPacificAndRestOfLatinAmericaMember
1067	Disclosure of geographical areas [line items]	LineItems			ifrs-full:DisclosureOfGeographicalAreasLineItems
1068	Income from ordinary activities	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
1069	Other operating income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherIncome
1070	00000102 - Disclosure - SEGMENTAL INFORMATION (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/SegmentalInformationDetailsNarrative
1071	Disclosure of operating segments [table]	Table	*	*	ifrs-full:DisclosureOfOperatingSegmentsTable
1072	Segments [axis]	Axis			ifrs-full:SegmentsAxis
1073	Segments [member]	Member			ifrs-full:SegmentsMember
1074	Coalition And Loyalty Program Multiplus [Member]	Member			ltm:CoalitionAndLoyaltyProgramMultiplusMember
1075	Concentrations of risk [axis]	Axis			ifrs-full:ConcentrationsOfRiskAxis
1076	Concentrations of risk [member]	Member			ifrs-full:ConcentrationsOfRiskMember
1077	Customer Concentration Risk [Member]	Member			ltm:CustomerConcentrationRisk1Member
1078	Disclosure of operating segments [line items]	LineItems			ifrs-full:DisclosureOfOperatingSegmentsLineItems
1079	Number of operating segment	Concept (Integer)	As Of		ltm:NumberOfOperatingSegment
1080	Number of member for loyalty coalition	Concept (Integer)	As Of		ltm:NumberOfMemberForLoyaltyCoalition
1081	Concentration risk, percentage	Concept (Percent)	For Period		ltm:ConcentrationRiskPercentage
1082	00000103 - Disclosure - CASH AND CASH EQUIVALENTS (Details)	Network	*	*	http://latamairlinesgroup.net/role/CashAndCashEquivalentsDetails
1083	Implied Table	Table	*	*	implied:Table
1084	Cash and cash equivalents [abstract]	Abstract			ifrs-full:CashAndCashEquivalentsAbstract
1085	Cash on hand	Concept (Monetary)	As Of	Debit	ifrs-full:CashOnHand
1086	Bank balances	Concept (Monetary)	As Of	Debit	ifrs-full:BalancesWithBanks
1087	Overnight	Concept (Monetary)	As Of	Debit	ltm:OvernightMoney
1088	Total Cash	Concept (Monetary)	As Of	Debit	ifrs-full:Cash
1089	Cash equivalents	Abstract			ifrs-full:CashEquivalentsAbstract
1090	Time deposits	Concept (Monetary)	As Of	Credit	ltm:CashEquivalentsTimeDeposits
1091	Mutual funds	Concept (Monetary)	As Of	Credit	ltm:MutualFunds
1092	Total cash equivalents	Concept (Monetary)	As Of	Debit	ifrs-full:CashEquivalents
1093	Total cash and cash equivalents	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
1094	00000104 - Disclosure - CASH AND CASH EQUIVALENTS (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/CashAndCashEquivalentsDetails1
1095	Disclosure of financial assets [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsTable
1096	Currency [Axis]	Axis			srt:CurrencyAxis
1097	All Currencies [Domain]	Member			currency:AllCurrenciesDomain
1098	Argentina, Pesos	Member			currency:ARS
1099	Brazil, Brazil Real	Member			currency:BRL
1100	Chile, Pesos	Member			currency:CLP
1101	Colombia, Pesos	Member			currency:COP
1102	Euro Member Countries, Euro	Member			currency:EUR
1103	United States of America, Dollars	Member			currency:USD
1104	Other currency	Member			ltm:XXXMember
1105	Disclosure of financial assets [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsLineItems
1106	Total	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
1107	00000105 - Disclosure - FINANCIAL INSTRUMENTS (Details)	Network	*	*	http://latamairlinesgroup.net/role/FinancialInstrumentsDetails
1108	Disclosure of financial liabilities [table]	Table	*	*	ifrs-full:DisclosureOfFinancialLiabilitiesTable
1109	Categories of financial assets [axis]	Axis			ifrs-full:CategoriesOfFinancialAssetsAxis
1110	Financial assets, category [member]	Member			ifrs-full:FinancialAssetsCategoryMember
1111	Measured At Amortized Cost [Member]	Member			ltm:MeasuredAtAmortizedCostMember
1112	At Fair Value With Changes In Results [Member]	Member			ltm:AtFairValueWithChangesInResultsMember
1113	Hedge Derivatives [Member]	Member			ltm:HedgeDerivativesMember
1114	Financial Assets [Member]	Member			ltm:FinancialAssetsCategory1Member
1115	Loans And Receivables [Member]	Member			ifrs-full:LoansAndReceivablesCategoryMember
1116	Held For Trading [Member]	Member			ltm:HeldForTradingMember
1117	Initial Designation As Fair Value Through Profit And Loss [Member]	Member			ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1118	Classes of financial liabilities [axis]	Axis			ifrs-full:ClassesOfFinancialLiabilitiesAxis
1119	Financial liabilities, class [member]	Member			ifrs-full:FinancialLiabilitiesMember
1120	Measured At Amortized Cost [Member]	Member			ltm:MeasuredAtAmortizedCostMember
1121	Hedge Derivatives [Member]	Member			ltm:HedgeDerivativesMember
1122	Financial liabilities [Member]	Member			ltm:FinancialLiabilities1Member
1123	Other Financial Liabilities [Member]	Member			ltm:OtherFinancialLiabilitiesMember
1124	Held Hedge Derivatives [Member]	Member			ltm:HeldHedgeDerivativesMember
1125	Disclosure of financial liabilities [line items]	LineItems			ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
1126	Assets	Abstract			ifrs-full:AssetsAbstract
1127	Cash and cash equivalents	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
1128	Other financial assets, current	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentFinancialAssets
1129	Trade and others accounts receivable, current	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
1130	Accounts receivable from related entities, current	Concept (Monetary)	As Of	Debit	ltm:AccountsReceivableFromRelatedEntities
1131	Other non-financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentNonfinancialAssets
1132	Accounts receivable, non current	Concept (Monetary)	As Of	Debit	ltm:AccountsReceivable
1133	Total assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
1134	Liabilities	Abstract			ifrs-full:LiabilitiesAbstract
1135	Other liabilities, current	Concept (Monetary)	As Of	Credit	ifrs-full:OtherCurrentLiabilities
1136	Trade and other accounts payables, current	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayables
1137	Accounts payable to related entities, current	Concept (Monetary)	As Of	Debit	ltm:AccountsPayableFromRelatedEntities
1138	Other financial liabilities, non-current	Concept (Monetary)	As Of	Credit	ifrs-full:OtherCurrentNonfinancialLiabilities
1139	Accounts payable, non-current	Concept (Monetary)	As Of	Credit	ltm:AccountsPayable
1140	Total liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
1141	00000106 - Disclosure - FINANCIAL INSTRUMENTS (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/FinancialInstrumentsDetails1
1142	Disclosure of financial liabilities [table]	Table	*	*	ifrs-full:DisclosureOfFinancialLiabilitiesTable
1143	Currency [Axis]	Axis			srt:CurrencyAxis
1144	All Currencies [Domain]	Member			currency:AllCurrenciesDomain
1145	Argentina, Pesos	Member			currency:ARS
1146	Brazil, Brazil Real	Member			currency:BRL
1147	Chile, Pesos	Member			currency:CLP
1148	Colombia, Pesos	Member			currency:COP
1149	Euro Member Countries, Euro	Member			currency:EUR
1150	United States of America, Dollars	Member			currency:USD
1151	Other currency	Member			currency:XXX
1152	Disclosure of financial liabilities [line items]	LineItems			ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
1153	Assets	Abstract			ifrs-full:AssetsAbstract
1154	Cash and cash equivalents	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
1155	Other financial assets (current and non-current)	Concept (Monetary)	As Of	Debit	ifrs-full:OtherFinancialAssets
1156	Trade and other accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
1157	Accounts receivable, non-current	Concept (Monetary)	As Of	Debit	ltm:AccountsReceivable
1158	Accounts receivable from related entities, current	Concept (Monetary)	As Of	Debit	ltm:AccountsReceivableFromRelatedEntities
1159	Total assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
1160	00000107 - Disclosure - TRADE AND OTHER ACCOUNTS RECEIVABLE CURRENT, AND NON-CURRENT ACCOUNTS RECEIVABLE (Details)	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsReceivableCurrentAndNon-currentAccountsReceivableDetails
1161	Disclosure of reconciliation of changes in goodwill [table]	Table	*	*	ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillTable
1162	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1163	Carrying amount [member]	Member			ifrs-full:CarryingAmountMember
1164	Gross Book Value [Member]	Member			ifrs-full:GrossCarryingAmountMember
1165	Accumulated Impairment [Member]	Member			ifrs-full:AccumulatedImpairmentMember
1166	Disclosure of reconciliation of changes in goodwill [line items]	LineItems			ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillLineItems
1167	Trade accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentTradeReceivables
1168	Other accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentReceivables
1169	Total net trade and accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherReceivables
1170	Less: non-current portion - accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentReceivables
1171	Trade and other accounts receivable, current	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
1172	00000109 - Disclosure - TRADE AND OTHER ACCOUNTS RECEIVABLE CURRENT, AND NON-CURRENT ACCOUNTS RECEIVABLE (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsReceivableCurrentAndNon-currentAccountsReceivableDetails2
1173	Disclosure of financial assets that are either past due or impaired [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
1174	Impairment of financial assets [axis]	Axis			ifrs-full:ImpairmentOfFinancialAssetsAxis
1175	Entity's total for impairment of financial assets [member]	Member			ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
1176	Up to date [Member]	Member			ifrs-full:FinancialAssetsNeitherPastDueNorImpairedMember
1177	Maturity [axis]	Axis			ifrs-full:MaturityAxis
1178	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
1179	Up to 90 days [Member]	Member			ifrs-full:NotLaterThanThreeMonthsMember
1180	91 To 180 Days [Member]	Member			ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMember
1181	Between 6 and 12 months [Member]	Member			ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMember
1182	More Of 360 Days [Member]	Member			ifrs-full:LaterThanOneYearMember
1183	Total [Member]	Member			ltm:TotalMember
1184	Disclosure of financial assets that are either past due or impaired [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
1185	Expected loss rate	Concept (Percent)	As Of		ifrs-full:ExpectedCreditLossRate
1186	Gross book value	Concept (Monetary)	As Of	Debit	ltm:GrossBookValue
1187	Impairment loss provision	Concept (Monetary)	As Of	Debit	ltm:ImpairmentLossProvision
1188	00000110 - Disclosure - TRADE AND OTHER ACCOUNTS RECEIVABLE CURRENT, AND NON-CURRENT ACCOUNTS RECEIVABLE (Details 3)	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsReceivableCurrentAndNon-currentAccountsReceivableDetails3
1189	Disclosure of financial assets that are either past due or impaired [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
1190	Currency [Axis]	Axis			srt:CurrencyAxis
1191	All Currencies [Domain]	Member			currency:AllCurrenciesDomain
1192	Argentina, Pesos	Member			currency:ARS
1193	Brazil, Brazil Real	Member			currency:BRL
1194	Chile, Pesos	Member			currency:CLP
1195	Colombia, Pesos	Member			currency:COP
1196	Euro Member Countries, Euro	Member			currency:EUR
1197	United States of America, Dollars	Member			currency:USD
1198	Australia, Dollars	Member			currency:AUD
1199	China, Yuan Renminbi	Member			currency:CNY
1200	Danish Krone	Member			currency:NOK
1201	Pound Sterling	Member			currency:GBP
1202	Indian Rupee	Member			currency:INR
1203	Japanese Yen	Member			currency:JPY
1204	Norwegian Kroner	Member			currency:DKK
1205	Swiss Franc	Member			currency:SZL
1206	Korean Won	Member			currency:KPW
1207	New Taiwanese Dollar	Member			currency:TWD
1208	Other Currencies	Member			ltm:OtherCurrenciesMember
1209	Other Currency	Member			ltm:OtherCurrencyMember
1210	Disclosure of financial assets that are either past due or impaired [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
1211	Total	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherReceivables
1212	00000111 - Disclosure - TRADE AND OTHER ACCOUNTS RECEIVABLE CURRENT, AND NON-CURRENT ACCOUNTS RECEIVABLE (Details 4)	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsReceivableCurrentAndNon-currentAccountsReceivableDetails4
1213	Disclosure of reconciliation of changes in goodwill [table]	Table	*	*	ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillTable
1214	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1215	Carrying amount [member]	Member			ifrs-full:CarryingAmountMember
1216	Accumulated Impairment [Member]	Member			ifrs-full:AccumulatedImpairmentMember
1217	Disclosure of reconciliation of changes in goodwill [line items]	LineItems			ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillLineItems
1218	Opening balance	Concept (Monetary)	As Of	Credit	ltm:TradeReceivablesAllowanceForImpairmentLoss
1219	Adoption adjustment IFRS 9	Concept (Monetary)	For Period	Credit	ltm:AdoptionAdjustmentAllowanceForImpairmentLoss
1220	Write-offs	Concept (Monetary)	For Period	Credit	ltm:WriteOffsAllowanceForImpairmentLoss
1221	(Increase) Decrease	Concept (Monetary)	For Period	Credit	ltm:IncreaseDecreaseAllowanceForImpairmentLoss
1222	Closing balance	Concept (Monetary)	As Of	Credit	ltm:TradeReceivablesAllowanceForImpairmentLoss
1223	00000112 - Disclosure - TRADE AND OTHER ACCOUNTS RECEIVABLE CURRENT, AND NON-CURRENT ACCOUNTS RECEIVABLE (Details 5)	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsReceivableCurrentAndNon-currentAccountsReceivableDetails5
1224	Disclosure of reconciliation of changes in goodwill [table]	Table	*	*	ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillTable
1225	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1226	Carrying amount [member]	Member			ifrs-full:CarryingAmountMember
1227	Gross Book Value [Member]	Member			ifrs-full:GrossCarryingAmountMember
1228	Accumulated Impairment [Member]	Member			ifrs-full:AccumulatedImpairmentMember
1229	Disclosure of reconciliation of changes in goodwill [line items]	LineItems			ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillLineItems
1230	Trade accounts receivable	Concept (Monetary)	As Of	Debit	ltm:CurrentTradeReceivablesGross
1231	Other accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentReceivables
1232	00000113 - Disclosure - ACCOUNTS RECEIVABLE FROM/PAYABLE TO RELATED ENTITIES (Details)	Network	*	*	http://latamairlinesgroup.net/role/AccountsReceivableFrompayableToRelatedEntitiesDetails
1233	Disclosure of transactions between related parties [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1234	Categories Of Related Parties [Axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
1235	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
1236	Qatar Airways [Member]	Member			ltm:IndirectShareholderMember
1237	Bethia S.A and Subsidiaries [Member]	Member			ltm:RelatedDirector2Member
1238	TAM Aviacao Executiva e Taxi Aereo S.A. [Member]	Member			ltm:RelatedDirector8Member
1239	Granja Marina Tornagaleones S.A. [Member]	Member			ltm:CommonShareholderMember
1240	Inversiones Costa Verde Ltda. y CPA. [Member]	Member			ltm:RelatedDirectorMember
1241	Disclosure of transactions between related parties [line items]	LineItems			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1242	Tax No	Concept (Text/String)	For Period		ifrs-full:NameOfReportingEntityOrOtherMeansOfIdentification
1243	Nature of relationship with related parties	Concept (Text/String)	For Period		ifrs-full:DescriptionOfNatureOfRelatedPartyRelationship
1244	Country of origin	Concept (Text/String)	For Period		ifrs-full:DomicileOfEntity
1245	Currency	Concept (Text/String)	For Period		ifrs-full:DescriptionOfPresentationCurrency
1246	Accounts Receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherReceivablesDueFromRelatedParties
1247	00000114 - Disclosure - ACCOUNTS RECEIVABLE FROM/PAYABLE TO RELATED ENTITIES (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/AccountsReceivableFrompayableToRelatedEntitiesDetails1
1248	Disclosure of transactions between related parties [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1249	Categories Of Related Parties [Axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
1250	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
1251	Bethia S.A and Subsidiaries [Member]	Member			ltm:RelatedDirector2Member
1252	Inversora Aeronautica Argentina S.A. [Member]	Member			ltm:RelatedDirector5Member
1253	Consultoria Administrativa Profesional S.A. de C.V. [Member]	Member			ltm:Associates1Member
1254	TAM Aviacao Executiva e Taxi Aereo S/A [Member]	Member			ltm:RelatedDirector6Member
1255	Disclosure of transactions between related parties [line items]	LineItems			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1256	Tax No	Concept (Text/String)	For Period		ifrs-full:NameOfReportingEntityOrOtherMeansOfIdentification
1257	Nature of relationship with related parties	Concept (Text/String)	For Period		ifrs-full:DescriptionOfNatureOfRelatedPartyRelationship
1258	Country of origin	Concept (Text/String)	For Period		ifrs-full:DomicileOfEntity
1259	Currency	Concept (Text/String)	For Period		ifrs-full:DescriptionOfPresentationCurrency
1260	Accounts payable	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
1261	00000115 - Disclosure - INVENTORIES (Details)	Network	*	*	http://latamairlinesgroup.net/role/InventoriesDetails
1262	Implied Table	Table	*	*	implied:Table
1263	Inventories	Abstract			ltm:InventoriesAbstract
1264	Technical stock	Concept (Monetary)	As Of	Debit	ltm:TechnicalStock
1265	Non-technical stock	Concept (Monetary)	As Of	Debit	ltm:NonTechnicalStock
1266	Total	Concept (Monetary)	As Of	Debit	ifrs-full:Inventories
1267	00000116 - Disclosure - INVENTORIES (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/InventoriesDetails1
1268	Implied Table	Table	*	*	implied:Table
1269	Inventories	Abstract			ltm:InventoriesAbstract
1270	Provision for obsolescence Technical stock	Concept (Monetary)	As Of	Credit	ltm:ProvisionForObsolescenceTechnicalStock
1271	Provision for obsolescence Non-technical stock	Concept (Monetary)	As Of	Credit	ltm:ProvisionForObsolescenceNonTechnicalStock
1272	Total	Concept (Monetary)	As Of	Credit	ltm:ProvisionForObsolescenceTotal
1273	00000117 - Disclosure - INVENTORIES (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/InventoriesDetailsNarrative
1274	Implied Table	Table	*	*	implied:Table
1275	Inventories	Abstract			ltm:InventoriesAbstract
1276	Cost of sales	Concept (Monetary)	For Period	Debit	ifrs-full:CostOfSales
1277	00000118 - Disclosure - OTHER FINANCIAL ASSETS (Details)	Network	*	*	http://latamairlinesgroup.net/role/OtherFinancialAssetsDetails
1278	Disclosure of financial assets [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsTable
1279	Classes of financial assets [axis]	Axis			ifrs-full:ClassesOfFinancialAssetsAxis
1280	Financial assets, class [member]	Member			ifrs-full:FinancialAssetsMember
1281	Private Investment Funds [Member]	Member			ltm:PrivateInvestmentFundsMember
1282	Deposits In Guarantee (Aircraft) [Member]	Member			ltm:DepositsinGuaranteeAircraftMember
1283	Guarantees For Margins Of Derivatives [Member]	Member			ltm:GuaranteesForMarginsOfDerivativesMember
1284	Other Investments [Member]	Member			ltm:OtherInvestments1Member
1285	Domestic And Foreign Bonds [Member]	Member			ltm:DomesticAndForeignBondsMember
1286	Other Guarantees Given [Member]	Member			ltm:OtherGuaranteesGivenMember
1287	Categories of financial assets [axis]	Axis			ifrs-full:CategoriesOfFinancialAssetsAxis
1288	Financial assets, category [member]	Member			ifrs-full:FinancialAssetsCategoryMember
1289	Other Financial Assets Categories [Member]	Member			ltm:OtherFinancialAssetsCategoriesMember
1290	Hedging Assets Categories [Member]	Member			ltm:HedgingAssetsCategoriesMember
1291	Derivatives Not Recognized As A Hedge Categories [Member]	Member			ltm:DerivativesNotRecognizedAsAHedgeCategoriesMember
1292	Hedging instruments [axis]	Axis			ifrs-full:HedgingInstrumentsAxis
1293	Hedging instruments [member]	Member			ifrs-full:HedgingInstrumentsMember
1294	Interest Accrued Since The Last Payment Date Of Cross Currency Swap [Member]	Member			ltm:InterestAccruedSinceTheLastPaymentDateOfCrossCurrencySwapMember
1295	Fair Value Of Interest Rate Derivatives [Member]	Member			ltm:FairValueOfInterestRateDerivativesMember
1296	Fair Value Of Foreign Currency Derivatives [Member]	Member			ltm:FairValueOfForeignCurrencyDerivativesMember
1297	Fair Value Of Fuel Price Derivatives [Member]	Member			ltm:FairValueOfFuelPriceDerivativesMember
1298	Foreign Currency Derivatives Not Recognized As A Hedge [Member]	Member			ltm:ForeignCurrencyDerivativesNotRecognizedAsAHedgeMember
1299	Disclosure of financial assets [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsLineItems
1300	Current Assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentFinancialAssets
1301	Non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherNoncurrentFinancialAssets
1302	Total Assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherFinancialAssets
1303	00000119 - Disclosure - OTHER NON-FINANCIAL ASSETS (Details)	Network	*	*	http://latamairlinesgroup.net/role/OtherNon-financialAssetsDetails
1304	Disclosure of financial assets [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsTable
1305	Classes of financial assets [axis]	Axis			ifrs-full:ClassesOfFinancialAssetsAxis
1306	Financial assets, class [member]	Member			ifrs-full:FinancialAssetsMember
1307	Aircraft Leases [Member]	Member			ltm:AircraftLeasesMember
1308	Aircraft Insurance And Other [Member]	Member			ltm:AircraftInsuranceAndOtherMember
1309	Others [Member]	Member			ltm:OthersMember
1310	GDS Costs [Member]	Member			ltm:GDSCostsMember
1311	Credit Card Commissions [Member]	Member			ltm:CreditCardCommissionsMember
1312	Travel Agencies Commissions [Member]	Member			ltm:TravelAgenciesCommissionsMember
1313	Aircraft Maintenance Reserve [Member]	Member			ltm:AircraftMaintenanceReserveMember
1314	Sales Tax [Member]	Member			ltm:SalesTaxMember
1315	Other Taxes [Member]	Member			ltm:OtherTaxesMember
1316	Contributions to Societe Internationale de Telecommunications Aeronautiques ("SITA") [Member]	Member			ltm:ContributionsToSocieteInternationaleDeTelecommunicationsAeronautiquesMember
1317	Judicial Deposits [Member]	Member			ltm:JudicialDepositsMember
1318	Categories of financial assets [axis]	Axis			ifrs-full:CategoriesOfFinancialAssetsAxis
1319	Financial assets, category [member]	Member			ifrs-full:FinancialAssetsCategoryMember
1320	Advance Payments Categories [Member]	Member			ltm:AdvancePaymentsMember
1321	Contract assets [Member]	Member			ifrs-full:ContractAssetsMember
1322	Other Assets Categories [Member]	Member			ifrs-full:OtherAssetsMember
1323	Disclosure of financial assets [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsLineItems
1324	Current Assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentNonfinancialAssets
1325	Non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherNoncurrentNonfinancialAssets
1326	Total Assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherNonfinancialAssets
1327	00000120 - Disclosure - OTHER NON-FINANCIAL ASSETS (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/OtherNon-financialAssetsDetails1
1328	Disclosure of financial assets [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsTable
1329	Categories of financial assets [axis]	Axis			ifrs-full:CategoriesOfFinancialAssetsAxis
1330	Financial assets, category [member]	Member			ifrs-full:FinancialAssetsCategoryMember
1331	Contract assets [Member]	Member			ifrs-full:ContractAssetsMember
1332	Disclosure of financial assets [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsLineItems
1333	Opening Balance	Concept (Monetary)	As Of	Debit	ifrs-full:OtherNonfinancialAssets
1334	Activation	Concept (Monetary)	For Period	Debit	ltm:OtherNonfinancialAssetActivation
1335	Adjustments by the application of IFRS 15	Concept (Monetary)	For Period	Debit	ltm:OtherNoncurrentNonfinancialAssetAdjustments
1336	Difference by conversion	Concept (Monetary)	For Period	Debit	ltm:OtherNoncurrentNonfinancialAssetDifferenceByConversion
1337	Amortization	Concept (Monetary)	For Period	Debit	ltm:OtherNoncurrentNonfinancialAssetsAmortized
1338	Closing Balance	Concept (Monetary)	As Of	Debit	ifrs-full:OtherNonfinancialAssets
1339	00000121 - Disclosure - OTHER NON-FINANCIAL ASSETS (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/OtherNon-financialAssetsDetailsNarrative
1340	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1341	Property, plant and equipment by operating lease status [axis]	Axis			ifrs-full:PropertyPlantAndEquipmentByOperatingLeaseStatusAxis
1342	Property, plant and equipment by operating lease status [member]	Member			ifrs-full:PropertyPlantAndEquipmentByOperatingLeaseStatusMember
1343	Aircraft [Member]	Member			ifrs-full:AircraftMember
1344	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1345	Reserve maintain	Concept (Monetary)	As Of	Credit	ifrs-full:OtherReserves
1346	Number of aircraft under operating leases	Concept (Integer)	As Of		ltm:NumberOfAircrafts
1347	00000122 - Disclosure - NON-CURRENT ASSETS AND DISPOSAL GROUP CLASSIFIED AS HELD FOR SALE (Details)	Network	*	*	http://latamairlinesgroup.net/role/Non-currentAssetsAndDisposalGroupClassifiedAsHeldForSaleDetails
1348	Disclosure of financial assets [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsTable
1349	Classes of assets [axis]	Axis			ifrs-full:ClassesOfAssetsAxis
1350	Assets [member]	Member			ifrs-full:ClassesOfAssetsMember
1351	Non-current Assets And In Disposal Groups Held For Sale [Member]	Member			ltm:NonCurrentAssetsAndInDisposalGroupsHeldForSaleMember
1352	Disclosure of financial assets [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsLineItems
1353	Current assets	Abstract			ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwnersAbstract
1354	Aircraft	Concept (Monetary)	As Of	Debit	ltm:AircraftDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
1355	Engines and rotables	Concept (Monetary)	As Of	Debit	ltm:EnginesAndRotablesDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
1356	Other assets	Concept (Monetary)	As Of	Debit	ltm:OtherCurrentFinancialAssetsDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
1357	Total current assets	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
1358	Current liabilities	Abstract			ifrs-full:CurrentLiabilitiesAbstract
1359	Other liabilities	Concept (Monetary)	As Of	Credit	ltm:OtherCurrentFinancialLiabilitiesDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
1360	Total current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale
1361	00000123 - Disclosure - NON-CURRENT ASSETS AND DISPOSAL GROUP CLASSIFIED AS HELD FOR SALE (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/Non-currentAssetsAndDisposalGroupClassifiedAsHeldForSaleDetails1
1362	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1363	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1364	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
1365	Boeing 777 [Member]	Member			ltm:Boeing777Member
1366	Airbus A330-200 [Member]	Member			ltm:AirbusA330200Member
1367	Airbus A320-200 [Member]	Member			ltm:AirbusA320200Member
1368	ATR42-300 [Member]	Member			ltm:ATR42300Member
1369	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1370	Total	Concept (Integer)	For Period		ltm:NumberOfAircraft
1371	00000124 - Disclosure - NON-CURRENT ASSETS AND DISPOSAL GROUP CLASSIFIED AS HELD FOR SALE (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/Non-currentAssetsAndDisposalGroupClassifiedAsHeldForSaleDetailsNarrative
1372	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1373	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1374	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
1375	Airbus A330 [Member]	Member			ltm:AirbusA330Member
1376	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1377	Number of assets classified as held for sale	Concept (Integer)	For Period		ltm:NumberOfAssetsClassifiedAsHeldForSale
1378	Assets write down adjustment	Concept (Monetary)	For Period		ifrs-full:WritedownsReversalsOfPropertyPlantAndEquipment
1379	Number of assets sold	Concept (Integer)	For Period		ltm:NumberOfAssetsSold
1380	Assets reclassified from property, plant and equipment net realizable value	Concept (Monetary)	As Of	Debit	ltm:AssetsReclassifiedFromPropertyPlantAndEquipmentNetRealizableValue
1381	Assets reclassified from inventories net realizable value	Concept (Monetary)	As Of	Debit	ltm:AssetsReclassifiedFromInventoriesNetRealizableValue
1382	00000125 - Disclosure - INVESTMENTS IN SUBSIDIARIES (Details)	Network	*	*	http://latamairlinesgroup.net/role/InvestmentsInSubsidiariesDetails
1383	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
1384	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1385	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
1386	Lan Peru S.A. [Member]	Member			ltm:LanPeruSAMember
1387	Lan Cargo S.A. [Member]	Member			ltm:LanCargoSAMember
1388	Lan Argentina S.A. [Member]	Member			ltm:LanArgentinaSAMember
1389	Transporte Aereo S.A. [Member]	Member			ltm:TransporteAereoSAMember
1390	Aerolane Lineas Aereas Nacionales del Ecuador S.A. [Member]	Member			ltm:AerolaneLineasAereasNacionalesDelEcuadorSAMember
1391	Aerovias de Integracion Regional, AIRES S.A. [Member]	Member			ltm:AeroviasdeIntegracionRegionalAIRESSAMember
1392	TAM S.A. and Subsidiaries [Member]	Member			ltm:TAMSAAndSubsidiariesMember
1393	Disclosure of subsidiaries [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
1394	Country of incorporation	Concept (Text/String)	For Period		ifrs-full:CountryOfIncorporationOrResidenceOfSubsidiary
1395	Functional currency	Concept (Text/String)	For Period		ifrs-full:DescriptionOfFunctionalCurrency
1396	Percentage of equity ownership	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInSubsidiary
1397	00000126 - Disclosure - INVESTMENTS IN SUBSIDIARIES (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/InvestmentsInSubsidiariesDetails1
1398	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
1399	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1400	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
1401	Lan Peru S.A. [Member]	Member			ltm:LanPeruSAMember
1402	Lan Cargo S.A. [Member]	Member			ltm:LanCargoSAMember
1403	Lan Argentina S.A. [Member]	Member			ltm:LanArgentinaSAMember
1404	Transporte Aereo S.A. [Member]	Member			ltm:TransporteAereoSAMember
1405	Aerolane Lineas Aereas Nacionales del Ecuador S.A. [Member]	Member			ltm:AerolaneLineasAereasNacionalesDelEcuadorSAMember
1406	Aerovias de Integracion Regional, AIRES S.A. [Member]	Member			ltm:AeroviasdeIntegracionRegionalAIRESSAMember
1407	TAM S.A. and Subsidiaries [Member]	Member			ltm:TAMSAAndSubsidiariesMember
1408	Disclosure of subsidiaries [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
1409	Assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
1410	Current Assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssets
1411	Non-current Assets	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentAssets
1412	Total liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
1413	Current Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilities
1414	Non-current Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentLiabilities
1415	Revenue	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
1416	NET INCOME (LOSS) FOR THE PERIOD	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
1417	00000127 - Disclosure - INVESTMENTS IN SUBSIDIARIES (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/InvestmentsInSubsidiariesDetails2
1418	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
1419	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
1420	Equity [member]	Member			ifrs-full:EquityMember
1421	Non-Controlling Interest [Member]	Member			ifrs-full:NoncontrollingInterestsMember
1422	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1423	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
1424	Lan Peru S.A. [Member]	Member			ltm:LanPeruSAMember
1425	Lan Cargo S.A. And Subsidiaries [Member]	Member			ltm:LanCargoSAAndSubsidiariesMember
1426	Promotora Aerea Latinoamericana S.A. and Subsidiaries [Member]	Member			ltm:PromotoraAereaLatinoamericanaSAAndSubsidiariesMember
1427	Inversora Cordillera S.A. and Subsidiaries [Member]	Member			ltm:InversoraCordilleraSAAndSubsidiariesMember
1428	Lan Argentina S.A. [Member]	Member			ltm:LanArgentinaSAMember
1429	Americonsult de Guatemala S.A. [Member]	Member			ltm:AmericonsultDeGuatemalaSAMember
1430	Americonsult S.A. and Subsidiaries [Member]	Member			ltm:AmericonsultSAAndSubsidiariesMember
1431	Americonsult Costa Rica S.A. [Member]	Member			ltm:AmericonsultCostaRicaSAMember
1432	Linea Aerea Carguera de Colombiana S.A. [Mmeber]	Member			ltm:LineaAereaCargueraDeColombianaSAMember
1433	Aerolineas Regionales de Integracion Aires S.A. [Member]	Member			ltm:AerolineasRegionalesDeIntegracionAiresSAMember
1434	Transportes Aereos del Mercosur S.A. [Member]	Member			ltm:TransportesAereosDelMercosurSAMember
1435	Multiplus S.A. [Member]	Member			ltm:MultiplusSAMember
1436	Disclosure of subsidiaries [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
1437	Tax No .	Concept (Text/String)	For Period		ifrs-full:NameOfReportingEntityOrOtherMeansOfIdentification
1438	Country of origin	Concept (Text/String)	For Period		ifrs-full:CountryOfIncorporationOrResidenceOfSubsidiary
1439	Percentage of equity ownwrship	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInSubsidiary
1440	Total	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
1441	00000128 - Disclosure - INVESTMENTS IN SUBSIDIARIES (Details 3)	Network	*	*	http://latamairlinesgroup.net/role/InvestmentsInSubsidiariesDetails3
1442	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
1443	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
1444	Equity [member]	Member			ifrs-full:EquityMember
1445	Non-Controlling Interest [Member]	Member			ifrs-full:NoncontrollingInterestsMember
1446	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1447	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
1448	Lan Peru S.A. [Member]	Member			ltm:LanPeruSAMember
1449	Lan Cargo S.A. And Subsidiaries [Member]	Member			ltm:LanCargoSAAndSubsidiariesMember
1450	Promotora Aerea Latinoamericana S.A. and Subsidiaries [Member]	Member			ltm:PromotoraAereaLatinoamericanaSAAndSubsidiariesMember
1451	Inversora Cordillera S.A. and Subsidiaries [Member]	Member			ltm:InversoraCordilleraSAAndSubsidiariesMember
1452	Lan Argentina S.A. [Member]	Member			ltm:LanArgentinaSAMember
1453	Americonsult de Guatemala S.A. [Member]	Member			ltm:AmericonsultDeGuatemalaSAMember
1454	Americonsult S.A. and Subsidiaries [Member]	Member			ltm:AmericonsultSAAndSubsidiariesMember
1455	Linea Aerea Carguera de Colombiana S.A. [Mmeber]	Member			ltm:LineaAereaCargueraDeColombianaSAMember
1456	Aerolineas Regionales de Integracion Aires S.A. [Member]	Member			ltm:AerolineasRegionalesDeIntegracionAiresSAMember
1457	Transportes Aereos del Mercosur S.A. [Member]	Member			ltm:TransportesAereosDelMercosurSAMember
1458	Multiplus S.A. [Member]	Member			ltm:MultiplusSAMember
1459	Disclosure of subsidiaries [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
1460	Tax No .	Concept (Text/String)	For Period		ifrs-full:NameOfReportingEntityOrOtherMeansOfIdentification
1461	Country of origin	Concept (Text/String)	For Period		ifrs-full:CountryOfIncorporationOrResidenceOfSubsidiary
1462	Percentage of income attributable to subsidiaries	Concept (Percent)	For Period		ltm:ProportionOfIncomeOfNoncontrollingInterestInSubsidiary
1463	Total	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToNoncontrollingInterests
1464	00000129 - Disclosure - INTANGIBLE ASSETS OTHER THAN GOODWILL (Details)	Network	*	*	http://latamairlinesgroup.net/role/IntangibleAssetsOtherThanGoodwillDetails
1465	Disclosure of detailed information about intangible assets [table]	Table	*	*	ifrs-full:DisclosureOfIntangibleAssetsTable
1466	Classes of intangible assets other than goodwill [axis]	Axis			ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
1467	Intangible assets other than goodwill [member]	Member			ifrs-full:IntangibleAssetsOtherThanGoodwillMember
1468	Airport Slots [Member]	Member			ltm:AirportsLotsMember
1469	Loyalty Program [Member]	Member			ltm:LoyaltyProgramMember
1470	Computer Software [Member]	Member			ifrs-full:ComputerSoftwareMember
1471	Developing Software [Member]	Member			ltm:DevelopingSoftwareMember
1472	Trade Marks [Member]	Member			ifrs-full:BrandNamesMember
1473	Other Assets [Member]	Member			ifrs-full:OtherIntangibleAssetsMember
1474	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1475	Carrying amount [member]	Member			ifrs-full:CarryingAmountMember
1476	Gross Book Value [Member]	Member			ifrs-full:GrossCarryingAmountMember
1477	Disclosure of detailed information about intangible assets [line items]	LineItems			ifrs-full:DisclosureOfIntangibleAssetsLineItems
1478	Intangible assets other than goodwill	Concept (Monetary)	As Of	Debit	ifrs-full:IntangibleAssetsOtherThanGoodwill
1479	00000130 - Disclosure - INTANGIBLE ASSETS OTHER THAN GOODWILL (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/IntangibleAssetsOtherThanGoodwillDetails1
1480	Disclosure of detailed information about intangible assets [table]	Table	*	*	ifrs-full:DisclosureOfIntangibleAssetsTable
1481	Classes of intangible assets other than goodwill [axis]	Axis			ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
1482	Intangible assets other than goodwill [member]	Member			ifrs-full:IntangibleAssetsOtherThanGoodwillMember
1483	Computer Software [Member]	Member			ifrs-full:ComputerSoftwareMember
1484	Developing Software [Member]	Member			ltm:DevelopingSoftwareMember
1485	Airport Slots [Member]	Member			ltm:AirportsLotsMember
1486	Trademarks and Loyalty Program [Member]	Member			ltm:TrademarksAndLoyaltyProgramMember
1487	Disclosure of detailed information about intangible assets [line items]	LineItems			ifrs-full:DisclosureOfIntangibleAssetsLineItems
1488	Reconciliation of changes in intangible assets other than goodwill [Roll Forward]	Abstract			ifrs-full:ReconciliationOfChangesInIntangibleAssetsOtherThanGoodwillAbstract
1489	Opening balance	Concept (Monetary)	As Of	Debit	ifrs-full:IntangibleAssetsOtherThanGoodwill
1490	Additions	Concept (Monetary)	For Period	Debit	ifrs-full:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
1491	Withdrawals	Concept (Monetary)	For Period	Credit	ifrs-full:DisposalsAndRetirementsIntangibleAssetsOtherThanGoodwill
1492	Transfer software	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesIntangibleAssetsOtherThanGoodwill
1493	Foreing exchange	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill
1494	Amortization	Concept (Monetary)	For Period		ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
1495	Hyperinflation Argentina	Concept (Monetary)	For Period	Debit	ltm:HyperinflationArgentina
1496	Adjustment aplication IAS 29 by hyperinflation Argentina	Concept (Monetary)	For Period	Debit	ltm:AdjustmentAplicationIas29ByHyperinflationArgentina
1497	Closing balance	Concept (Monetary)	As Of	Debit	ifrs-full:IntangibleAssetsOtherThanGoodwill
1498	00000131 - Disclosure - INTANGIBLE ASSETS OTHER THAN GOODWILL (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/IntangibleAssetsOtherThanGoodwillDetailsNarrative
1499	Disclosure of detailed information about intangible assets [table]	Table	*	*	ifrs-full:DisclosureOfIntangibleAssetsTable
1500	Classes of intangible assets other than goodwill [axis]	Axis			ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
1501	Intangible assets other than goodwill [member]	Member			ifrs-full:IntangibleAssetsOtherThanGoodwillMember
1502	Computer Programs [Member]	Member			ltm:ComputerProgramsMember
1503	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1504	Carrying amount [member]	Member			ifrs-full:CarryingAmountMember
1505	Accumulated Depreciation [Member]	Member			ifrs-full:AccumulatedDepreciationAndAmortisationMember
1506	Disclosure of detailed information about intangible assets [line items]	LineItems			ifrs-full:DisclosureOfIntangibleAssetsLineItems
1507	Useful lives	Concept (Text/String)	For Period		ifrs-full:UsefulLivesOrAmortisationRatesIntangibleAssetsOtherThanGoodwill
1508	Accumulated amortization	Concept (Monetary)	For Period		ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
1509	00000132 - Disclosure - GOODWILL (Details)	Network	*	*	http://latamairlinesgroup.net/role/GoodwillDetails
1510	Disclosure of detailed information about intangible assets [table]	Table	*	*	ifrs-full:DisclosureOfIntangibleAssetsTable
1511	Cash-generating units [axis]	Axis			ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis
1512	Entity's total for cash-generating units [member]	Member			ifrs-full:EntitysTotalForCashgeneratingUnitsMember
1513	Air Transport CGU [Member]	Member			ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember
1514	Coalition and Loyalty Program Multiplus CGU [Member]	Member			ltm:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLives1Member
1515	Disclosure of detailed information about intangible assets [line items]	LineItems			ifrs-full:DisclosureOfIntangibleAssetsLineItems
1516	Reconciliation of changes in goodwill [Roll Forward]	Abstract			ifrs-full:ReconciliationOfChangesInGoodwillAbstract
1517	Opening balance	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
1518	Increase (decrease) due to exchange rate differences	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesGoodwill
1519	Adjustment IAS 29, hyperinflation Argentina	Concept (Monetary)	For Period	Debit	ltm:AdjustmentIas29HyperinflationArgentina
1520	Others	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesGoodwill
1521	Closing balance	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
1522	00000133 - Disclosure - GOODWILL (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/GoodwillDetails1
1523	Disclosure of detailed information about intangible assets [table]	Table	*	*	ifrs-full:DisclosureOfIntangibleAssetsTable
1524	Classes of intangible assets and goodwill [axis]	Axis			ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
1525	Intangible assets and goodwill [member]	Member			ifrs-full:IntangibleAssetsAndGoodwillMember
1526	Goodwill [Member]	Member			ifrs-full:GoodwillMember
1527	Cash-generating units [axis]	Axis			ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis
1528	Entity's total for cash-generating units [member]	Member			ifrs-full:EntitysTotalForCashgeneratingUnitsMember
1529	Air Transport CGU [Member]	Member			ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesMember
1530	Coalition and Loyalty Program Multiplus CGU [Member]	Member			ltm:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLives1Member
1531	Range [axis]	Axis			ifrs-full:RangeAxis
1532	Ranges [member]	Member			ifrs-full:RangesMember
1533	Bottom of range [Member]	Member			ifrs-full:BottomOfRangeMember
1534	Top of range [Member]	Member			ifrs-full:TopOfRangeMember
1535	Disclosure of detailed information about intangible assets [line items]	LineItems			ifrs-full:DisclosureOfIntangibleAssetsLineItems
1536	Annual growth rate (Terminal)	Concept (Percent)	As Of		ltm:AnnualGrowthRate
1537	Exchange rate (in dollars per share)	Concept (Decimal)	As Of		ifrs-full:ClosingForeignExchangeRate
1538	Discount rate based on the weighted average cost of capital (WACC)	Concept (Percent)	As Of		ltm:WeightedAverageCostOfCapitalDiscountRate
1539	Discount rate based on cost of equity (CoE)	Concept (Percent)	As Of		ltm:CostOfEquityDiscountRate
1540	Fuel Price from futures price curves commodities markets (in dollars per Barril)	Concept (Monetary)	As Of	Debit	ltm:FuelPrice
1541	00000134 - Disclosure - GOODWILL (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/GoodwillDetailsNarrative
1542	Implied Table	Table	*	*	implied:Table
1543	Disclosure of detailed information about intangible assets [abstract]	Abstract			ifrs-full:DisclosureOfIntangibleAssetsAbstract
1544	Goodwill	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
1545	00000135 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details)	Network	*	*	http://latamairlinesgroup.net/role/PropertyPlantAndEquipmentDetails
1546	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1547	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1548	Carrying amount [member]	Member			ifrs-full:CarryingAmountMember
1549	Gross Book Value [Member]	Member			ifrs-full:GrossCarryingAmountMember
1550	Accumulated Depreciation [Member]	Member			ifrs-full:AccumulatedDepreciationAndAmortisationMember
1551	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1552	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
1553	Construction in Progress [Member]	Member			ifrs-full:ConstructionInProgressMember
1554	Land [Member]	Member			ifrs-full:LandMember
1555	Buildings [Member]	Member			ifrs-full:BuildingsMember
1556	Plant and Equipment [Member]	Member			ifrs-full:AircraftMember
1557	Own Aircraft [Member]	Member			ifrs-full:OwnedAircraftMember
1558	Other [Member]	Member			ltm:OtherPropertyPlantAndEquipment1Member
1559	Machinery [Member]	Member			ifrs-full:MachineryMember
1560	Information Technology Equipment [Member]	Member			ifrs-full:CommunicationAndNetworkEquipmentMember
1561	Fixed Installations and Accessories [Member]	Member			ltm:FixedInstallationsAndAccessoriesMember
1562	Motor Vehicles [Member]	Member			ifrs-full:MotorVehiclesMember
1563	Leasehold Improvements [Member]	Member			ifrs-full:LeaseholdImprovementsMember
1564	Other Property, Plants and Equipment [Member]	Member			ifrs-full:OtherPropertyPlantAndEquipmentMember
1565	Financial Leasing Aircraft [Member]	Member			ifrs-full:AircraftUnderFinanceLeaseMember
1566	Other [Member]	Member			ltm:OtherPropertyPlantAndEquipment2Member
1567	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1568	Book Value	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
1569	00000136 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/PropertyPlantAndEquipmentDetails1
1570	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1571	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1572	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
1573	Construction in Progress [Member]	Member			ifrs-full:ConstructionInProgressMember
1574	Land [Member]	Member			ifrs-full:LandMember
1575	Buildings [Member]	Member			ifrs-full:BuildingsMember
1576	Information Technology Equipment [Member]	Member			ifrs-full:CommunicationAndNetworkEquipmentMember
1577	Fixed Installations and Accessories [Member]	Member			ltm:FixedInstallationsAndAccessoriesMember
1578	Motor Vehicles [Member]	Member			ltm:MotorVehicles1Member
1579	Leasehold Improvements [Member]	Member			ifrs-full:LeaseholdImprovementsMember
1580	Other Property, Plants and Equipment [Member]	Member			ifrs-full:OtherPropertyPlantAndEquipmentMember
1581	Plant and Equipment Net [Member]	Member			ltm:PropertyPlantAndEquipment1Member
1582	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1583	Reconciliation of changes in property, plant and equipment [Roll Forward]	Abstract			ifrs-full:ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract
1584	Opening balance	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
1585	Additions	Concept (Monetary)	For Period	Debit	ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
1586	Disposals	Concept (Monetary)	For Period	Credit	ifrs-full:DisposalsPropertyPlantAndEquipment
1587	Retirements	Concept (Monetary)	For Period	Credit	ifrs-full:RetirementsPropertyPlantAndEquipment
1588	Depreciation expenses	Concept (Monetary)	For Period		ifrs-full:DepreciationPropertyPlantAndEquipment
1589	Foreing exchange	Concept (Monetary)	For Period	Debit	ltm:ForeingExchangeEffectPropertyPlantAndEquipment
1590	Other increases (decreases)	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipment
1591	Adjustment application IAS 29	Concept (Monetary)	For Period	Debit	ltm:AdjustmentApplicationIas29PropertyPlantAndEquipment
1592	Hyperinflation Argentina	Concept (Monetary)	For Period	Debit	ltm:HyperinflationArgentinaPropertyPlantAndEquipment
1593	Changes, total	Concept (Monetary)	For Period	Debit	ifrs-full:ChangesInPropertyPlantAndEquipment
1594	Closing balance	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
1595	00000137 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/PropertyPlantAndEquipmentDetails2
1596	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1597	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1598	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
1599	Boeing 767 [Member]	Member			ltm:Boeing767Member
1600	Boeing 767 [Member]	Member			ltm:Boeing1767Member
1601	Boeing 777 [Member]	Member			ltm:Boeing777Member
1602	Boeing 777 [Member]	Member			ltm:Boeing1777Member
1603	Boeing 787 [Member]	Member			ltm:Boeing787Member
1604	Boeing 787 [Member]	Member			ltm:Boeing1787Member
1605	Airbus A319 [Member]	Member			ltm:AirbusA319Member
1606	Airbus A320 [Member]	Member			ltm:AirbusA320Member
1607	Airbus A320 [Member]	Member			ltm:Airbus1A320Member
1608	Airbus A321 [Member]	Member			ltm:AirbusA321Member
1609	Airbus A350 [Member]	Member			ltm:AirbusA350Member
1610	Property, plant and equipment by operating lease status [axis]	Axis			ifrs-full:PropertyPlantAndEquipmentByOperatingLeaseStatusAxis
1611	Property, plant and equipment by operating lease status [member]	Member			ifrs-full:PropertyPlantAndEquipmentByOperatingLeaseStatusMember
1612	Aircraft Included in Property, Plant and Equipment [Member]	Member			ifrs-full:PropertyPlantAndEquipmentNotSubjectToOperatingLeasesMember
1613	Operating Leases [Member]	Member			ifrs-full:PropertyPlantAndEquipmentSubjectToOperatingLeasesMember
1614	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1615	Model	Concept (Text/String)	For Period		ltm:NameOfTheModel
1616	Number of aircraft	Concept (Integer)	For Period		ltm:NumberOfAircraft1
1617	00000138 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details 3)	Network	*	*	http://latamairlinesgroup.net/role/PropertyPlantAndEquipmentDetails3
1618	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1619	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1620	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
1621	Buildings [Member]	Member			ifrs-full:BuildingsMember
1622	Plant and Equipment Net [Member]	Member			ltm:PropertyPlantAndEquipment2Member
1623	Information Technology Equipment [Member]	Member			ifrs-full:CommunicationAndNetworkEquipmentMember
1624	Fixed Installations and Accessories [Member]	Member			ltm:FixedInstallationsAndAccessoriesMember
1625	Motor Vehicles [Member]	Member			ifrs-full:MotorVehiclesMember
1626	Leasehold Improvements [Member]	Member			ifrs-full:LeaseholdImprovementsMember
1627	Other Property, Plants and Equipment [Member]	Member			ifrs-full:OtherPropertyPlantAndEquipmentMember
1628	Range [axis]	Axis			ifrs-full:RangeAxis
1629	Ranges [member]	Member			ifrs-full:RangesMember
1630	Bottom of range [Member]	Member			ifrs-full:BottomOfRangeMember
1631	Top of range [Member]	Member			ifrs-full:TopOfRangeMember
1632	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1633	Method	Concept (Text/String)	For Period		ifrs-full:DepreciationMethodPropertyPlantAndEquipment
1634	Useful life	Concept (Text/String)	For Period		ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
1635	00000139 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details 4)	Network	*	*	http://latamairlinesgroup.net/role/PropertyPlantAndEquipmentDetails4
1636	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1637	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
1638	Entity [Domain]	Member			dei:EntityDomain
1639	Wilmington [Member]	Member			ltm:WILMINGTONMember
1640	Trust Company [Member]	Member			ltm:TrustCompanyMember
1641	Banco Santander S.A. [Member]	Member			ltm:BancoSantanderSAMember
1642	JP Morgan [Member]	Member			ltm:JPMorganMember
1643	Bank of Utah [Member]	Member			ltm:BankOfUtahMember
1644	Citibank N.A. [Member]	Member			ltm:CitibankNAMember
1645	Airbus Financial Services [Member]	Member			ltm:AirbusFinancialServicesMember
1646	PK AirFinance US, Inc. [Member]	Member			ltm:PKAirfFnanceUSIncMember
1647	Banco BBVA [Member]	Member			ltm:BancoBBVAMember
1648	BNP PARIBAS [Member]	Member			ltm:BNPPARIBASMember
1649	Credit Agricole [Member]	Member			ltm:CREDITAGRICOLEMember
1650	WELLS FARGO [Member]	Member			ltm:WELLSFARGOMember
1651	NATIXIS [Member]	Member			ltm:NATIXISMember
1652	KfWIP EX-Bank [Member]	Member			ltm:KFWIPEXBANKMember
1653	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1654	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
1655	Airbus A319 [Member]	Member			ltm:AirbusA319Member
1656	Airbus A320 [Member]	Member			ltm:AirbusA320Member
1657	Airbus A321 / A350 [Member]	Member			ltm:AirbusA321A350Member
1658	Boeing 767 [Member]	Member			ltm:Boeing767Member
1659	Boeing 787 [Member]	Member			ltm:Boeing787Member
1660	Airbus A321 [Member]	Member			ltm:AirbusA321Member
1661	Boeing 777 [Member]	Member			ltm:Boeing777Member
1662	Airbus A320/A350 [Member]	Member			ltm:AirbusA320A350Member
1663	Airbus A350 [Member]	Member			ltm:AirbusA350Member
1664	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1665	Assets committed	Concept (Text/String)	For Period		ltm:NameOfAssetsCommitted
1666	Existing Debt	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipmentPledgedAsSecurity
1667	Book Value	Concept (Monetary)	As Of	Debit	ifrs-full:FairValueOfPropertyPlantAndEquipmentMateriallyDifferentFromCarryingAmount
1668	00000140 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details 5)	Network	*	*	http://latamairlinesgroup.net/role/PropertyPlantAndEquipmentDetails5
1669	Implied Table	Table	*	*	implied:Table
1670	Property, plant and equipment [abstract]	Abstract			ifrs-full:PropertyPlantAndEquipmentAbstract
1671	Gross book value of fully depreciated property, plant and equipment still in use	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipmentGrossCarryingAmountFullyDepreciated
1672	Commitments for the acquisition of aircraft	Concept (Monetary)	As Of	Credit	ifrs-full:ContractualCommitmentsForAcquisitionOfPropertyPlantAndEquipment
1673	00000141 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details 6)	Network	*	*	http://latamairlinesgroup.net/role/PropertyPlantAndEquipmentDetails6
1674	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1675	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
1676	Entity [Domain]	Member			dei:EntityDomain
1677	Manufacturer [Member]	Member			ltm:ManufacturerMember
1678	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1679	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
1680	Airbus SAS [Member]	Member			ltm:AirbusSASMember
1681	Airbus A320-NEO	Member			ltm:AirbusA320NEOMember
1682	Airbus A321-NEO [Member]	Member			ltm:AirbusA321NEOMember
1683	Airbus A350-1000 [Member]	Member			ltm:AirbusA3501000Member
1684	Airbus A350-900 [Member]	Member			ltm:AirbusA350900Member
1685	The Boeing Company [Member]	Member			ltm:TheBoeingCompanyMember
1686	Boeing 777 [Member]	Member			ltm:Boeing777Member
1687	Boeing 787-9 [Member]	Member			ltm:Boeing7879Member
1688	Maturity [axis]	Axis			ifrs-full:MaturityAxis
1689	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
1690	Not Later Than One Year [Member]	Member			ifrs-full:NotLaterThanOneYearMember
1691	2020 [Member]	Member			ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1692	2021 [Member]	Member			ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1693	2022 [Member]	Member			ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1694	2023-2026 [Member]	Member			ifrs-full:LaterThanFiveYearsAndNotLaterThanSevenYearsMember
1695	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1696	Number of aircraft purchase	Concept (Integer)	For Period		ltm:NumberOfAircraftPurchase
1697	00000142 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details 7)	Network	*	*	http://latamairlinesgroup.net/role/PropertyPlantAndEquipmentDetails7
1698	Implied Table	Table	*	*	implied:Table
1699	Property, plant and equipment [abstract]	Abstract			ifrs-full:PropertyPlantAndEquipmentAbstract
1700	Average rate of capitalization of capitalized interest costs	Concept (Percent)	For Period		ifrs-full:CapitalisationRateOfBorrowingCostsEligibleForCapitalisation
1701	Costs of capitalized interest	Concept (Monetary)	For Period		ifrs-full:InterestCostsIncurred
1702	00000143 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details 8)	Network	*	*	http://latamairlinesgroup.net/role/PropertyPlantAndEquipmentDetails8
1703	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1704	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
1705	Entity [Domain]	Member			dei:EntityDomain
1706	Becacina Leasing LLC [Member]	Member			ltm:BecacinaLeasingLLCMember
1707	Caiquen Leasing LLC [Member]	Member			ltm:CaiquenLeasingLLCMember
1708	Cisne Leasing LLC [Member]	Member			ltm:CisneLeasingLLCMember
1709	Conure Leasing Limited [Member]	Member			ltm:ConureLeasingLimitedMember
1710	Flamenco Leasing LLC [Member]	Member			ltm:FlamencoLeasingLLCMember
1711	FLYAFI 1 S.R.L. [Member]	Member			ltm:FLYAFI1SRLMember
1712	FLYAFI 2 S.R.L. [Member]	Member			ltm:FLYAFI2SRLMember
1713	FLYAFI 3 S.R.L. [Member]	Member			ltm:FLYAFI3SRLMember
1714	Garza Leasing LLC [Member]	Member			ltm:GarzaLeasingLLCMember
1715	Jilguero Leasing LLC [Member]	Member			ltm:JilgueroLeasingLLCMember
1716	Loica Leasing Limited [Member]	Member			ltm:LoicaLeasingLimitedMember
1717	Mirlo Leasing LLC [Member]	Member			ltm:MirloLeasingLLCMember
1718	NBB Rio de Janeiro Lease CO and Brasilia Lease LLC (BBAM) [Member]	Member			ltm:NBBRiodeJaneiroLeaseCOandBrasiliaLeaseLLCBBAMMember
1719	NBB Sao Paulo Lease CO. Limited (BBAM) [Member]	Member			ltm:NBBSaoPauloLeaseCOLimitedBBAMMember
1720	Osprey Leasing Limited [Member]	Member			ltm:OspreyLeasingLimitedMember
1721	Patagon Leasing Limited [Member]	Member			ltm:PatagonLeasingLimitedMember
1722	Petrel Leasing LLC [Member]	Member			ltm:PetrelLeasingLLCMember
1723	Pochard Leasing LLC [Member]	Member			ltm:PochardLeasingLLCMember
1724	Quetro Leasing LLC [Member]	Member			ltm:QuetroLeasingLLCMember
1725	SG Infraestructure Italia S.R.L. [Member]	Member			ltm:SGInfraestructureItaliaSRLMember
1726	SL Alcyone LT D (Showa) [Member]	Member			ltm:SLAlcyoneLTDShowaMember
1727	Torcaza Leasing Limited [Member]	Member			ltm:TorcazaLeasingLimitedMember
1728	Tricahue Leasing LLC [Member]	Member			ltm:TricahueLeasingLLCMember
1729	Wacapou Leasing S.A [Member]	Member			ltm:WACAPOULEASINGSAMember
1730	777 Components Leasing. LLC [Member]	Member			ltm:ComponentsLeasingLLC777Member
1731	Amendoeira Leasing Limited [Member]	Member			ltm:AmendoeiraLeasingLimitedMember
1732	Angelim Leasing Limited [Member]	Member			ltm:AngelimLeasingLimitedMember
1733	Airbus A321-NEO [Member]	Member			ltm:AirbusA321NEOMember
1734	Araucaria Leasing Limited [Member]	Member			ltm:AraucariaLeasingLimitedMember
1735	Azalea Leasing Limited [Member]	Member			ltm:AzaleaLeasingLimitedMember
1736	Bandurria Leasing Limited [Member]	Member			ltm:BandurriaLeasingLimitedMember
1737	Chucao Leasing Limited [Member]	Member			ltm:ChucaoLeasingLimitedMember
1738	Figueira Leasing Limited [Member]	Member			ltm:FigueiraLeasingLimitedMember
1739	Fragata Leasing LLC [Member]	Member			ltm:FragataLeasingLLCMember
1740	Golondrina Leasing LLC [Member]	Member			ltm:GolondrinaLeasingLLCMember
1741	Imbuia Leasing Limited [Member]	Member			ltm:ImbuiaLeasingLimitedMember
1742	Jacaranda Leasing Limited [Member]	Member			ltm:JacarandaLeasingLimitedMember
1743	Jatoba Leasing Limited [Member]	Member			ltm:JatobaLeasingLimitedMember
1744	Massaranduba Leasing Limited [Member]	Member			ltm:MassarandubaLeasingLimitedMember
1745	Mogno Leasing Limited [Member]	Member			ltm:MognoLeasingLimitedMember
1746	Pau Brasil Leasing Limited [Member]	Member			ltm:PauBrasilLeasingLimitedMember
1747	Rolls Royce Leasing Limited [Member]	Member			ltm:RollsRoyceLeasingLimitedMember
1748	Sibipiruna Leasing Limited [Member]	Member			ltm:SibipirunaLeasingLimitedMember
1749	Tagua Leasing LLC [Member]	Member			ltm:TaguaLeasingLLCMember
1750	TiuqueLeasingLimited [Member]	Member			ltm:TiuqueLeasingLimitedMember
1751	Wells Fargo Trust Company, N.A. [Member]	Member			ltm:WellsFargoTrustCompanyNAMember
1752	Ype Leasing Limited [Member]	Member			ltm:YpeLeasingLimitedMember
1753	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1754	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
1755	Boeing 767 [Member]	Member			ltm:Boeing767Member
1756	Airbus A320 [Member]	Member			ltm:AirbusA320Member
1757	Boeing 777 [Member]	Member			ltm:Boeing777Member
1758	Airbus A319 [Member]	Member			ltm:AirbusA319Member
1759	Airbus A321 [Member]	Member			ltm:AirbusA321Member
1760	Airbus A320 [Member]	Member			ltm:Airbus1A320Member
1761	Boeing 777 [Member]	Member			ltm:Boeing1777Member
1762	Boeing 787 [Member]	Member			ltm:Boeing787Member
1763	Motor [Member]	Member			ltm:MotorMember
1764	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1765	Model	Concept (Text/String)	For Period		ltm:NameOfTheModel
1766	Number of aircraft under financial leases	Concept (Integer)	For Period		ltm:NumberOfAircraftUnderFinancialLease
1767	00000144 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details 9)	Network	*	*	http://latamairlinesgroup.net/role/PropertyPlantAndEquipmentDetails9
1768	Disclosure of finance lease and operating lease by lessee [table]	Table	*	*	ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
1769	Maturity [axis]	Axis			ifrs-full:MaturityAxis
1770	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
1771	Not Later Than One Year [Member]	Member			ifrs-full:NotLaterThanOneYearMember
1772	Between One And Five Years [Member]	Member			ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1773	Over five years [Member]	Member			ifrs-full:LaterThanFiveYearsMember
1774	Disclosure of finance lease and operating lease by lessee [line items]	LineItems			ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
1775	Gross Value	Concept (Monetary)	As Of	Credit	ltm:MinimumFinanceLeasePaymentsPayableGross
1776	Interest	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpenseOnFinanceLeases
1777	Present Value	Concept (Monetary)	As Of	Credit	ifrs-full:MinimumFinanceLeasePaymentsPayable
1778	00000146 - Disclosure - CURRENT AND DEFERRED TAXES (Details)	Network	*	*	http://latamairlinesgroup.net/role/CurrentAndDeferredTaxesDetails
1779	Implied Table	Table	*	*	implied:Table
1780	Major components of tax expense (income) [abstract]	Abstract			ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
1781	Provisional monthly payments (advances), current assets	Concept (Monetary)	As Of	Debit	ltm:ProvisionalMonthlyPaymentsAdvancesCurrent
1782	Provisional monthly payments (advances), non-current assets	Concept (Monetary)	As Of	Debit	ltm:ProvisionalMonthlyPaymentsAdvancesNonCurrent
1783	Provisional monthly payments (advances)	Concept (Monetary)	As Of	Debit	ltm:ProvisionalMonthlyPaymentsAdvances
1784	Other recoverable credits, current assets	Concept (Monetary)	As Of	Debit	ltm:OtherRecoverableCreditsCurrent
1785	Other recoverable credits, non-current assets	Concept (Monetary)	As Of	Debit	ltm:OtherRecoverableCreditsNonCurrent
1786	Other recoverable credits	Concept (Monetary)	As Of	Debit	ltm:OtherRecoverableCredits
1787	Total assets by current tax, current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentTaxAssetsCurrent
1788	Total assets by current tax, non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentTaxAssetsNoncurrent
1789	Total assets by current tax	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentTaxAssets
1790	00000147 - Disclosure - CURRENT AND DEFERRED TAXES (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/CurrentAndDeferredTaxesDetails1
1791	Implied Table	Table	*	*	implied:Table
1792	Major components of tax expense (income) [abstract]	Abstract			ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
1793	Income tax provision, current liabilities	Concept (Monetary)	As Of	Credit	ltm:IncomeTaxProvisionCurrent
1794	Income tax provision, non-current liabilities	Concept (Monetary)	As Of	Credit	ltm:IncomeTaxProvisionNonCurrent
1795	Income tax provision	Concept (Monetary)	As Of	Credit	ltm:IncomeTaxProvision
1796	Total liabilities by current tax, current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentTaxLiabilitiesCurrent
1797	Total liabilities by current tax, non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentTaxLiabilitiesNoncurrent
1798	Total liabilities by current tax	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentTaxLiabilities
1799	00000150 - Disclosure - CURRENT AND DEFERRED TAXES (Details 4)	Network	*	*	http://latamairlinesgroup.net/role/CurrentAndDeferredTaxesDetails4
1800	Implied Table	Table	*	*	implied:Table
1801	Major components of tax expense (income) [abstract]	Abstract			ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
1802	Tax losses	Concept (Monetary)	For Period	Debit	ltm:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss1
1803	Total Deferred tax assets not recognized	Concept (Monetary)	For Period	Debit	ltm:DeferredTaxExpenseIncomeNotRecognisedInProfitOrLoss
1804	00000151 - Disclosure - CURRENT AND DEFERRED TAXES (Details 5)	Network	*	*	http://latamairlinesgroup.net/role/CurrentAndDeferredTaxesDetails5
1805	Implied Table	Table	*	*	implied:Table
1806	Major components of tax expense (income) [abstract]	Abstract			ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
1807	Current tax expense	Abstract			ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract
1808	Current tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:CurrentTaxExpenseIncome
1809	Adjustment to previous period's current tax	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
1810	Total current tax expense, net	Concept (Monetary)	For Period	Debit	ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
1811	Deferred tax expense	Abstract			ifrs-full:DeferredTaxExpenseIncomeAbstract
1812	Deferred expense for taxes related to the creation and reversal of temporary differences	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
1813	Total deferred tax expense, net	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseIncome
1814	Income tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
1815	00000152 - Disclosure - CURRENT AND DEFERRED TAXES (Details 6)	Network	*	*	http://latamairlinesgroup.net/role/CurrentAndDeferredTaxesDetails6
1816	Disclosure of disaggregation of revenue from contracts with customers [table]	Table	*	*	ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
1817	Geographical areas [axis]	Axis			ifrs-full:GeographicalAreasAxis
1818	Geographical areas [member]	Member			ifrs-full:GeographicalAreasMember
1819	Foreign [Member]	Member			ifrs-full:ForeignCountriesMember
1820	Chile [Member]	Member			ifrs-full:CountryOfDomicileMember
1821	Disclosure of disaggregation of revenue from contracts with customers [line items]	LineItems			ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
1822	Total current tax expense, net	Concept (Monetary)	For Period	Debit	ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
1823	Deferred tax expense, net, total	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseIncome
1824	Income tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
1825	00000153 - Disclosure - CURRENT AND DEFERRED TAXES (Details 7)	Network	*	*	http://latamairlinesgroup.net/role/CurrentAndDeferredTaxesDetails7
1826	Implied Table	Table	*	*	implied:Table
1827	Major components of tax expense (income) [abstract]	Abstract			ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
1828	Reconciliation of accounting profit multiplied by applicable tax rates [abstract]	Abstract			ifrs-full:ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract
1829	Tax expense using the legal rate	Concept (Monetary)	For Period	Debit	ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
1830	Tax effect by change in tax rate	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectFromChangeInTaxRate
1831	Tax effect of rates in other jurisdictions	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectOfForeignTaxRates
1832	Tax effect of non-taxable operating revenues	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectOfTaxLosses
1833	Tax effect of disallowable expenses	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1834	Tax effect of due to the non-use of tax losses	Concept (Monetary)	For Period	Debit	ltm:TaxEffectOfUseOfTaxLossesNotPreviouslyRecognized
1835	Other increases (decreases) in legal tax charge	Concept (Monetary)	For Period	Debit	ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
1836	Total adjustments to tax expense using the legal rate	Concept (Monetary)	For Period	Debit	ltm:TotalAdjustmentsToTaxExpenseIncomeUsingTheLegalRate
1837	Tax expense using the effective rate	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
1838	Reconciliation of average effective tax rate and applicable tax rate [abstract]	Abstract			ifrs-full:ReconciliationOfAverageEffectiveTaxRateAndApplicableTaxRateAbstract
1839	Tax expense using the legal rate, percent	Concept (Percent)	For Period		ifrs-full:ApplicableTaxRate
1840	Tax effect by change in tax rate, percent	Concept (Percent)	For Period		ifrs-full:TaxRateEffectFromChangeInTaxRate
1841	Tax effect of rates in other jurisdictions, percent	Concept (Percent)	For Period		ifrs-full:TaxRateEffectOfForeignTaxRates
1842	Tax effect of non-taxable operating revenues, percent	Concept (Percent)	For Period		ifrs-full:TaxRateEffectOfTaxLosses
1843	Tax effect of disallowable expenses, percent	Concept (Percent)	For Period		ifrs-full:TaxRateEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1844	Tax effect of due to the non-use of tax losses	Concept (Percent)	For Period		ltm:TaxEffectOfUseOfTaxLossesNotPreviouslyRecognizedPercent
1845	Other increases (decreases) in legal tax charge, percent	Concept (Percent)	For Period		ifrs-full:OtherTaxRateEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
1846	Total adjustments to tax expense using the legal rate, percent	Concept (Percent)	For Period		ltm:TotalAdjustmentsToTaxExpenseIncomeRateUsingTheLegalRate
1847	Tax expense using the effective rate, percent	Concept (Percent)	For Period		ifrs-full:AverageEffectiveTaxRate
1848	00000154 - Disclosure - CURRENT AND DEFERRED TAXES (Details 8)	Network	*	*	http://latamairlinesgroup.net/role/CurrentAndDeferredTaxesDetails8
1849	Implied Table	Table	*	*	implied:Table
1850	Major components of tax expense (income) [abstract]	Abstract			ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
1851	Aggregate deferred taxation of components of other comprehensive income	Concept (Monetary)	For Period		ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
1852	00000155 - Disclosure - CURRENT AND DEFERRED TAXES (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/CurrentAndDeferredTaxesDetailsNarrative
1853	Disclosure of non-adjusting events after reporting period [table]	Table	*	*	ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodTable
1854	Non-adjusting events after reporting period [axis]	Axis			ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
1855	Non-adjusting events after reporting period [member]	Member			ifrs-full:NonadjustingEventsMember
1856	Changes In Tax Rates Or Tax Laws Enacted Or Announced [Member]	Member			ifrs-full:ChangesInTaxRatesOrTaxLawsEnactedOrAnnouncedMember
1857	Disclosure of non-adjusting events after reporting period [line items]	LineItems			ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
1858	Income tax, applicable tax rate (in percent)	Concept (Percent)	For Period		ifrs-full:ApplicableTaxRate
1859	Increase in deferred tax assets	Concept (Monetary)	For Period	Credit	ltm:IncreaseInDeferredTaxAssets
1860	Decrease in deferred tax liabilities	Concept (Monetary)	For Period	Debit	ltm:DecreaseInDeferredTaxLiabilities
1861	Other increases (decreases) in legal tax charges	Concept (Monetary)	For Period	Debit	ltm:OtherIncreasesDecreasesInLegalTaxCharges
1862	Other adjustments for permanent differences	Concept (Monetary)	For Period	Debit	ifrs-full:ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationNetOfTax
1863	Total Deferred tax assets not recognized	Concept (Monetary)	For Period	Debit	ltm:DeferredTaxExpenseIncomeNotRecognisedInProfitOrLoss
1864	Tax loss under deferred tax assets not recognized	Concept (Monetary)	For Period	Debit	ltm:TaxLossUnderDeferredTaxExpenseIncomeNotRecognised
1865	Re evaluation of projections written off	Concept (Monetary)	For Period	Debit	ltm:ReEvaluationOfProjectionsWrittenOff
1866	00000156 - Disclosure - OTHER FINANCIAL LIABILITIES (Details)	Network	*	*	http://latamairlinesgroup.net/role/OtherFinancialLiabilitiesDetails
1867	Disclosure of financial liabilities [table]	Table	*	*	ifrs-full:DisclosureOfFinancialLiabilitiesTable
1868	Categories of financial liabilities [axis]	Axis			ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1869	Financial liabilities, category [member]	Member			ifrs-full:FinancialLiabilitiesCategoryMember
1870	Other Financial Liabilities [Member]	Member			ltm:OtherFinancialLiabilitiesMember
1871	Disclosure of financial liabilities [line items]	LineItems			ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
1872	Current	Abstract			ifrs-full:CategoriesOfCurrentFinancialLiabilitiesAbstract
1873	(a) Interest bearing loans	Concept (Monetary)	As Of	Credit	ifrs-full:ShorttermBorrowings
1874	(b) Hedge derivatives	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentDerivativeFinancialLiabilities
1875	(c) Derivative non classified as hedge acounting	Concept (Monetary)	As Of	Credit	ltm:DerivativeNonClassifiedAsHedgeAcounting
1876	Total current	Concept (Monetary)	As Of	Credit	ifrs-full:OtherCurrentFinancialLiabilities
1877	Non-current	Abstract			ifrs-full:CategoriesOfNoncurrentFinancialLiabilitiesAbstract
1878	(a) Interest bearing loans	Concept (Monetary)	As Of	Credit	ifrs-full:LongtermBorrowings
1879	(b) Hedge derivatives	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentDerivativeFinancialLiabilities
1880	Total non-current	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentFinancialLiabilities
1881	00000157 - Disclosure - OTHER FINANCIAL LIABILITIES (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/OtherFinancialLiabilitiesDetails1
1882	Disclosure of financial liabilities [table]	Table	*	*	ifrs-full:DisclosureOfFinancialLiabilitiesTable
1883	Categories of financial liabilities [axis]	Axis			ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1884	Financial liabilities, category [member]	Member			ifrs-full:FinancialLiabilitiesCategoryMember
1885	Loans To Exporters [Member]	Member			ltm:LoansToExportersMember
1886	Bank Loans [Member]	Member			ltm:BankLoansMember
1887	Guaranteed Obligations [Member]	Member			ltm:GuaranteedObligationsMember
1888	Other Guaranteed Obligations [Member]	Member			ltm:OtherGuaranteedObligationsMember
1889	Total Bank Loans [Member]	Member			ltm:BankLoans1Member
1890	Obligation With The Public [Member]	Member			ltm:ObligationWithThePublicMember
1891	Financial Leases [Member]	Member			ltm:FinancialLeasesMember
1892	Other Loans [Member]	Member			ltm:OtherLoansMember
1893	Disclosure of financial liabilities [line items]	LineItems			ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
1894	Total current	Concept (Monetary)	As Of	Credit	ifrs-full:ShorttermBorrowings
1895	Total non-current	Concept (Monetary)	As Of	Credit	ifrs-full:LongtermBorrowings
1896	Total obligations with financial institutions	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
1897	00000158 - Disclosure - OTHER FINANCIAL LIABILITIES (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/OtherFinancialLiabilitiesDetails2
1898	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1899	Currency [Axis]	Axis			srt:CurrencyAxis
1900	All Currencies [Domain]	Member			currency:AllCurrenciesDomain
1901	Brazil, Brazil Real	Member			currency:BRL
1902	Chile, Pesos	Member			currency:CLP
1903	United States of America, Dollars	Member			currency:USD
1904	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1905	Total obligations with financial institutions	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
1906	00000160 - Disclosure - OTHER FINANCIAL LIABILITIES (Details 4)	Network	*	*	http://latamairlinesgroup.net/role/OtherFinancialLiabilitiesDetails4
1907	Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [table]	Table	*	*	ifrs-full:DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsTable
1908	Hedging instruments [axis]	Axis			ifrs-full:HedgingInstrumentsAxis
1909	Hedging instruments [member]	Member			ifrs-full:HedgingInstrumentsMember
1910	Interest Rate Swap [Member]	Member			ltm:InterestRateSwap1Member
1911	Interest Rate Derivative Contracts [Member]	Member			ltm:InterestRateDerivativeContractsMember
1912	Fair Value Fuel Derivatives [Membe]	Member			ltm:FairValueFuelDerivativesMember
1913	Foreign Forward Instrument [Member]	Member			ltm:ForeignForwardInstrumentMember
1914	Derivative Foreign Currency Not Registered Coverage [Member]	Member			ltm:DerivativeForeignCurrencyNotRegisteredCoverageMember
1915	Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]	LineItems			ifrs-full:DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsLineItems
1916	Current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentDerivativeFinancialLiabilities
1917	Non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentDerivativeFinancialLiabilities
1918	Total hedge derivatives	Concept (Monetary)	As Of	Credit	ifrs-full:DerivativeFinancialLiabilities
1919	Total derived from non-coverage	Concept (Monetary)	As Of	Credit	ltm:TotalDerivedFromNoncoverage
1920	00000161 - Disclosure - OTHER FINANCIAL LIABILITIES (Details 5)	Network	*	*	http://latamairlinesgroup.net/role/OtherFinancialLiabilitiesDetails5
1921	Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [table]	Table	*	*	ifrs-full:DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsTable
1922	Hedging instruments [axis]	Axis			ifrs-full:HedgingInstrumentsAxis
1923	Hedging instruments [member]	Member			ifrs-full:HedgingInstrumentsMember
1924	Cross currency swaps (CCS) [Member]	Member			ltm:CrossCurrencySwapsMember
1925	Interest rate swaps [Member]	Member			ltm:InterestRateSwapsMember
1926	Fuel options [Member]	Member			ltm:FuelDerivativeMember
1927	Currency options R$/US$ [Member]	Member			ltm:CurrencyOptionsMember
1928	Currency options CLP/US$	Member			ltm:CurrencyOptions1Member
1929	Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]	LineItems			ifrs-full:DisclosureOfInformationAboutTermsAndConditionsOfHedgingInstrumentsAndHowTheyAffectFutureCashFlowsLineItems
1930	Fair values of net assets/ (liabilities)	Concept (Monetary)	As Of	Debit	ifrs-full:NetAssetsLiabilities
1931	00000162 - Disclosure - OTHER FINANCIAL LIABILITIES (Details 6)	Network	*	*	http://latamairlinesgroup.net/role/OtherFinancialLiabilitiesDetails6
1932	Implied Table	Table	*	*	implied:Table
1933	Disclosure of financial liabilities [abstract]	Abstract			ifrs-full:DisclosureOfFinancialLiabilitiesAbstract
1934	Debit (credit) recognized in comprehensive income during the period	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnCashFlowHedgesBeforeTax
1935	Debit (credit) transferred from net equity to income during the period	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeBeforeTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
1936	00000163 - Disclosure - OTHER FINANCIAL LIABILITIES (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/OtherFinancialLiabilitiesDetailsNarrative
1937	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
1938	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1939	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
1940	Tam Linhas Aereas S.A. [Member]	Member			ltm:TAMLinhasAereasSAMember
1941	TAM Capital Inc [Member]	Member			ltm:TAMCapitalIncMember
1942	Latam Finance Limited [Member]	Member			ltm:LatamFinanceLimitedMember
1943	TAM Capital 3 Inc [Member]	Member			ltm:TAMCapital3IncMember
1944	Categories of financial liabilities [axis]	Axis			ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1945	Financial liabilities, category [member]	Member			ifrs-full:FinancialLiabilitiesCategoryMember
1946	Bank Loans [Member]	Member			ltm:BankLoansMember
1947	Obligation With The Public [Member]	Member			ltm:ObligationWithThePublicMember
1948	Guaranteed Obligations [Member]	Member			ltm:GuaranteedObligationsMember
1949	Currency [Axis]	Axis			srt:CurrencyAxis
1950	All Currencies [Domain]	Member			currency:AllCurrenciesDomain
1951	CLF	Member			currency:CLF
1952	Borrowings by name [axis]	Axis			ifrs-full:BorrowingsByNameAxis
1953	Borrowings by name [member]	Member			ifrs-full:BorrowingsByNameMember
1954	Series A Bond [Member]	Member			ltm:SeriesABondMember
1955	Series B Bond [Member]	Member			ltm:SeriesBBondMember
1956	Series C Bond [Member]	Member			ltm:SeriesCBondMember
1957	Series D Bond [Member]	Member			ltm:SeriesDBondMember
1958	Total Series Bond [Member]	Member			ltm:TotalSeriesBondMember
1959	Disclosure of subsidiaries [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
1960	Total obligations with financial institutions	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
1961	Description of collateral	Concept (Text/String)	For Period		ltm:DescriptionOfBorrowingsCollateral
1962	Interest rate	Concept (Percent)	As Of		ifrs-full:BorrowingsInterestRate
1963	Description of debt maturity	Concept (Text/String)	For Period		ifrs-full:BorrowingsMaturity
1964	00000164 - Disclosure - TRADE AND OTHER ACCOUNTS PAYABLES (Details)	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsPayablesDetails
1965	Implied Table	Table	*	*	implied:Table
1966	Trade And Other Accounts Payables	Abstract			ltm:TradeAndOtherAccountsPayablesAbstract
1967	Current	Abstract			ifrs-full:TradeAndOtherCurrentPayablesAbstract
1968	Trade and other accounts payables	Concept (Monetary)	As Of	Credit	ltm:TradeAndOtherCurrentPayables1
1969	Accrued liabilities at the reporting date	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentAccruedExpensesAndOtherCurrentLiabilities
1970	Total trade and other accounts payables	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayables
1971	00000165 - Disclosure - TRADE AND OTHER ACCOUNTS PAYABLES (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsPayablesDetails1
1972	Implied Table	Table	*	*	implied:Table
1973	Trade And Other Accounts Payables	Abstract			ltm:TradeAndOtherAccountsPayablesAbstract
1974	Trade creditors	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
1975	Leasing obligation	Concept (Monetary)	As Of	Credit	ltm:CurrentLeasingObligation
1976	Other accounts payable	Concept (Monetary)	As Of	Credit	ifrs-full:OtherCurrentPayables
1977	Trade and other accounts payables	Concept (Monetary)	As Of	Credit	ltm:TradeAndOtherCurrentPayables1
1978	00000166 - Disclosure - TRADE AND OTHER ACCOUNTS PAYABLES (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsPayablesDetails2
1979	Implied Table	Table	*	*	implied:Table
1980	Trade And Other Accounts Payables	Abstract			ltm:TradeAndOtherAccountsPayablesAbstract
1981	Aircraft Fuel	Concept (Monetary)	As Of	Credit	ltm:CurrentAircraftFuel
1982	Boarding Fee	Concept (Monetary)	As Of	Credit	ltm:CurrentBoardingFee
1983	Other personnel expenses	Concept (Monetary)	As Of	Credit	ltm:CurrentOtherPersonnelExpenses
1984	Handling and ground handling	Concept (Monetary)	As Of	Credit	ltm:CurrentHandlingAndGroundHandling
1985	Professional services and advisory	Concept (Monetary)	As Of	Credit	ltm:CurrentProfessionalServicesAndAdvisory
1986	Airport charges and overflight	Concept (Monetary)	As Of	Credit	ltm:CurrentAirportChargesAndOverflight
1987	Suppliers technical purchases	Concept (Monetary)	As Of	Credit	ltm:CurrentSuppliersTechnicalPurchases
1988	Marketing	Concept (Monetary)	As Of	Credit	ltm:CurrentMarketing
1989	Air companies	Concept (Monetary)	As Of	Credit	ltm:CurrentAirlines
1990	Leases, maintenance and IT services	Concept (Monetary)	As Of	Credit	ltm:CurrentLeasesMaintenanceAndITServices
1991	Services on board	Concept (Monetary)	As Of	Credit	ltm:CurrentServicesOnBoard
1992	Land services	Concept (Monetary)	As Of	Credit	ltm:CurrentLandServices
1993	Crew	Concept (Monetary)	As Of	Credit	ltm:CurrentCrew
1994	Achievement of goals	Concept (Monetary)	As Of	Credit	ltm:CurrentAchievementOfGoals
1995	Aviation insurance	Concept (Monetary)	As Of	Credit	ltm:CurrentAviationInsurance
1996	Maintenance	Concept (Monetary)	As Of	Credit	ltm:CurrentMaintenance
1997	Aircraft and engines leasing	Concept (Monetary)	As Of	Credit	ltm:CurrentAircraftAndEnginesLeasing
1998	Communications	Concept (Monetary)	As Of	Credit	ltm:CurrentCommunications
1999	Others	Concept (Monetary)	As Of	Credit	ltm:OtherCurrentPayables1
2000	Trade and other accounts payables	Concept (Monetary)	As Of	Credit	ltm:TradeAndOtherCurrentPayables1
2001	00000167 - Disclosure - TRADE AND OTHER ACCOUNTS PAYABLES (Details 3)	Network	*	*	http://latamairlinesgroup.net/role/TradeAndOtherAccountsPayablesDetails3
2002	Implied Table	Table	*	*	implied:Table
2003	Trade And Other Accounts Payables	Abstract			ltm:TradeAndOtherAccountsPayablesAbstract
2004	Liabilities accrued:	Abstract			ifrs-full:MiscellaneousCurrentLiabilitiesAbstract
2005	Accrued personnel expenses	Concept (Monetary)	As Of	Credit	ltm:CurrentAccruedPersonnelExpenses
2006	Aircraft and engine maintenance	Concept (Monetary)	As Of	Credit	ltm:CurrentAircraftAndEngineMaintenance
2007	Accounts payable to personnel	Concept (Monetary)	As Of	Credit	ltm:CurrentAccountsPayableToPersonnel
2008	Others accrued liabilities	Concept (Monetary)	As Of	Credit	ltm:CurrentOthersAccruedLiabilities
2009	Total accrued liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentAccruedExpensesAndOtherCurrentLiabilities
2010	00000168 - Disclosure - OTHER PROVISIONS (Details)	Network	*	*	http://latamairlinesgroup.net/role/OtherProvisionsDetails
2011	Disclosure of other provisions [table]	Table	*	*	ifrs-full:DisclosureOfOtherProvisionsTable
2012	Classes of other provisions [Axis]	Axis			ifrs-full:ClassesOfProvisionsAxis
2013	Other provisions [member]	Member			ifrs-full:OtherProvisionsMember
2014	Tax contingencies [Member]	Member			ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember
2015	Civil contingencies [Member]	Member			ltm:CivilContingenciesMember
2016	Labor contingencies [Member]	Member			ltm:LaborContingenciesMember
2017	Other [Member]	Member			ifrs-full:MiscellaneousOtherProvisionsMember
2018	Provision for European Commission Investigation [Member]	Member			ltm:ProvisionForEuropeanCommisionInvestigationMember
2019	Disclosure of other provisions [line items]	LineItems			ifrs-full:DisclosureOfOtherProvisionsLineItems
2020	Current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherShorttermProvisions
2021	Non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherLongtermProvisions
2022	Total Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherProvisions
2023	00000169 - Disclosure - OTHER PROVISIONS (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/OtherProvisionsDetails1
2024	Disclosure of other provisions [table]	Table	*	*	ifrs-full:DisclosureOfOtherProvisionsTable
2025	Classes of other provisions [Axis]	Axis			ifrs-full:ClassesOfProvisionsAxis
2026	Other provisions [member]	Member			ifrs-full:OtherProvisionsMember
2027	Legal claims [Member]	Member			ltm:LegalClaimsMember
2028	Provision for European Commission Investigation [Member]	Member			ltm:ProvisionForEuropeanCommisionInvestigationMember
2029	Disclosure of other provisions [line items]	LineItems			ifrs-full:DisclosureOfOtherProvisionsLineItems
2030	Reconciliation of changes in other provisions [Roll Forward]	Abstract			ifrs-full:ReconciliationOfChangesInOtherProvisionsAbstract
2031	Opening balance	Concept (Monetary)	As Of	Credit	ifrs-full:OtherProvisions
2032	Increase in provisions	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseInExistingProvisionsOtherProvisions
2033	Provision used	Concept (Monetary)	For Period	Debit	ifrs-full:ProvisionUsedOtherProvisions
2034	Difference by subsidiaries conversion	Concept (Monetary)	For Period	Debit	ifrs-full:DecreaseThroughLossOfControlOfSubsidiaryOtherProvisions
2035	Reversal of provision	Concept (Monetary)	For Period	Debit	ifrs-full:UnusedProvisionReversedOtherProvisions
2036	Exchange difference	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
2037	Closing balance	Concept (Monetary)	As Of	Credit	ifrs-full:OtherProvisions
2038	00000170 - Disclosure - OTHER PROVISIONS (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/OtherProvisionsDetailsNarrative
2039	Disclosure of other provisions [table]	Table	*	*	ifrs-full:DisclosureOfOtherProvisionsTable
2040	Classes of other provisions [Axis]	Axis			ifrs-full:ClassesOfProvisionsAxis
2041	Other provisions [member]	Member			ifrs-full:OtherProvisionsMember
2042	Provision for European Commission Investigation [Member]	Member			ltm:ProvisionForEuropeanCommisionInvestigationMember
2043	Classes of contingent liabilities [axis]	Axis			ifrs-full:ClassesOfContingentLiabilitiesAxis
2044	Contingent liabilities [member]	Member			ifrs-full:ContingentLiabilitiesMember
2045	Infringement of European Union Regulations [Member]	Member			ifrs-full:LegalProceedingsContingentLiabilityMember
2046	Currency [Axis]	Axis			srt:CurrencyAxis
2047	All Currencies [Domain]	Member			currency:AllCurrenciesDomain
2048	Euro Member Countries, Euro	Member			currency:EUR
2049	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2050	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
2051	Lan Cargo S.A. [Member]	Member			ltm:LanCargoSAMember
2052	Disclosure of other provisions [line items]	LineItems			ifrs-full:DisclosureOfOtherProvisionsLineItems
2053	Financial effect of fine imposed	Concept (Monetary)	As Of		ifrs-full:EstimatedFinancialEffectOfContingentLiabilities
2054	Tax credit suspend amount	Concept (Monetary)	As Of	Credit	ltm:TaxCreditSuspendAmount
2055	Number of cargo airlines investigation held	Concept (Integer)	As Of		ltm:NumberOfCargoAirlinesInvestigationHeld
2056	Number of cargo airlines fine imposed	Concept (Integer)	As Of		ltm:NumberOfCargoAirlinesFineImposed
2057	00000171 - Disclosure - OTHER NON-FINANCIAL LIABILITIES (Details)	Network	*	*	http://latamairlinesgroup.net/role/OtherNon-financialLiabilitiesDetails
2058	Disclosure of financial assets [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsTable
2059	Classes of financial assets [axis]	Axis			ifrs-full:ClassesOfFinancialAssetsAxis
2060	Financial assets, class [member]	Member			ifrs-full:FinancialAssetsMember
2061	Deferred Revenues [Member]	Member			ltm:DeferredRevenuesMember
2062	Sales Tax [Member]	Member			ltm:SalesTaxMember
2063	Retentions [Member]	Member			ltm:RetentionsMember
2064	Others Taxes [Member]	Member			ltm:OthersTaxesMember
2065	Dividends Payable [Member]	Member			ltm:DividendsMember
2066	Other Sundry Liabilities [Member]	Member			ltm:OtherSundryLiabilitiesMember
2067	Disclosure of financial assets [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsLineItems
2068	Current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherCurrentNonfinancialLiabilities
2069	Non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentNonfinancialLiabilities
2070	Total Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNonfinancialLiabilities
2071	00000172 - Disclosure - OTHER NON-FINANCIAL LIABILITIES (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/OtherNon-financialLiabilitiesDetails1
2072	Disclosure of financial assets [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsTable
2073	Classes of financial assets [axis]	Axis			ifrs-full:ClassesOfFinancialAssetsAxis
2074	Financial assets, class [member]	Member			ifrs-full:FinancialAssetsMember
2075	Deferred Revenues [Member]	Member			ltm:DeferredRevenuesMember
2076	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
2077	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
2078	Air Transport And Other [Member]	Member			ifrs-full:AircraftMember
2079	Disclosure of financial assets [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsLineItems
2080	Opening balance	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNonfinancialLiabilities
2081	Recognition of deferred income	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredIncome
2082	Use deferred income	Concept (Monetary)	As Of	Credit	ltm:UseDeferredIncome
2083	Expiration of tickets	Concept (Monetary)	As Of	Debit	ltm:ExpirationOfTickets2
2084	Deferred revenue loyalty (accreditation and exchange)	Concept (Monetary)	As Of	Debit	ltm:DeferredRevenueLoyaltyAccreditationAndExchange
2085	Others provisions	Concept (Monetary)	As Of	Credit	ifrs-full:OtherProvisions
2086	Adjustment application IAS 29, Argentina hyperinflation	Concept (Monetary)	As Of	Debit	ltm:AdjustmentApplicationIas29ArgentinaHyperinflations
2087	Closing balance	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNonfinancialLiabilities
2088	00000173 - Disclosure - EMPLOYEE BENEFITS (Details)	Network	*	*	http://latamairlinesgroup.net/role/EmployeeBenefitsDetails
2089	Implied Table	Table	*	*	implied:Table
2090	Disclosure of defined benefit plans [abstract]	Abstract			ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
2091	Retirements payments	Concept (Monetary)	As Of	Credit	ltm:NonCurrentRetirementsPayments
2092	Resignation payments	Concept (Monetary)	As Of	Credit	ltm:NonCurrentResignationPayments
2093	Other obligations	Concept (Monetary)	As Of	Credit	ltm:NonCurrentOtherObligations
2094	Total liability for employee benefits	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentProvisionsForEmployeeBenefits
2095	00000174 - Disclosure - EMPLOYEE BENEFITS (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/EmployeeBenefitsDetails1
2096	Implied Table	Table	*	*	implied:Table
2097	Disclosure of defined benefit plans [abstract]	Abstract			ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
2098	Opening balance	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilityAssetOfDefinedBenefitPlans
2099	Increase (decrease) current service provision	Concept (Monetary)	For Period	Credit	ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
2100	Benefits paid	Concept (Monetary)	For Period	Debit	ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
2101	Change of model	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset
2102	Actuarial (gains) losses	Concept (Monetary)	For Period	Debit	ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
2103	Currency translation	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
2104	Closing balance	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilityAssetOfDefinedBenefitPlans
2105	00000175 - Disclosure - EMPLOYEE BENEFITS (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/EmployeeBenefitsDetails2
2106	Implied Table	Table	*	*	implied:Table
2107	Disclosure of defined benefit plans [abstract]	Abstract			ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
2108	Discount rate (in percent)	Concept (Percent)	As Of		ifrs-full:ActuarialAssumptionOfDiscountRates
2109	Expected rate of salary increase (in percent)	Concept (Percent)	As Of		ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
2110	Rate of turnover (in percent)	Concept (Percent)	As Of		ltm:ActuarialAssumptionOfRateOfTurnover
2111	Mortality rate	Concept (Text/String)	For Period		ltm:MortalityRate
2112	Inflation rate (in percent)	Concept (Percent)	As Of		ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflation
2113	Retirement age of women	Concept (Text/String)	For Period		ltm:RetirementAgeOfWomen
2114	Retirement age of men	Concept (Text/String)	For Period		ltm:RetirementAgeOfMen
2115	00000176 - Disclosure - EMPLOYEE BENEFITS (Details 3)	Network	*	*	http://latamairlinesgroup.net/role/EmployeeBenefitsDetails3
2116	Implied Table	Table	*	*	implied:Table
2117	Disclosure of defined benefit plans [abstract]	Abstract			ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
2118	Discount rate	Abstract			ltm:ChangeAccruedLiabilityAfectOnDiscountRateValueAbstract
2119	Change in the accrued liability an closing for increase in 100 p.b.	Concept (Monetary)	As Of	Credit	ltm:ChangeAccruedLiabilityAfectOnIncreaseInDiscountRateValue
2120	Change in the accrued liability an closing for decrease of 100 p.b.	Concept (Monetary)	As Of	Credit	ltm:ChangeAccruedLiabilityAfectOnDecreaseInDiscountRateValue
2121	Rate of wage growth	Abstract			ltm:ChangeAccruedLiabilityAfectOnRateOfWageGrowthValueAbstract
2122	Change in the accrued liability an closing for increase in 100 p.b.	Concept (Monetary)	As Of	Credit	ltm:ChangeAccruedLiabilityAfectOnIncreaseInRateOfWageGrowthValue
2123	Change in the accrued liability an closing for decrease of 100 p.b.	Concept (Monetary)	As Of	Credit	ltm:ChangeAccruedLiabilityAfectOnDecreaseInDiscountRateOfWageGrowthValue
2124	00000177 - Disclosure - EMPLOYEE BENEFITS (Details 4)	Network	*	*	http://latamairlinesgroup.net/role/EmployeeBenefitsDetails4
2125	Implied Table	Table	*	*	implied:Table
2126	Disclosure of defined benefit plans [abstract]	Abstract			ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
2127	Profit-sharing and bonuses	Concept (Monetary)	For Period	Debit	ifrs-full:OtherShorttermEmployeeBenefits
2128	00000178 - Disclosure - EMPLOYEE BENEFITS (Details 5)	Network	*	*	http://latamairlinesgroup.net/role/EmployeeBenefitsDetails5
2129	Implied Table	Table	*	*	implied:Table
2130	Disclosure of defined benefit plans [abstract]	Abstract			ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
2131	Salaries and wages	Concept (Monetary)	For Period	Debit	ifrs-full:WagesAndSalaries
2132	Short-term employee benefits	Concept (Monetary)	For Period	Debit	ifrs-full:ShorttermEmployeeBenefitsExpense
2133	Termination benefits	Concept (Monetary)	For Period	Debit	ifrs-full:TerminationBenefitsExpense
2134	Other personnel expenses	Concept (Monetary)	For Period	Debit	ifrs-full:OtherEmployeeExpense
2135	Total	Concept (Monetary)	For Period	Debit	ifrs-full:EmployeeBenefitsExpense
2136	00000179 - Disclosure - ACCOUNTS PAYABLE, NON-CURRENT (Details)	Network	*	*	http://latamairlinesgroup.net/role/AccountsPayableNon-currentDetails
2137	Implied Table	Table	*	*	implied:Table
2138	Trade and other payables [abstract]	Abstract			ifrs-full:TradeAndOtherPayablesAbstract
2139	Aircraft and engine maintenance	Concept (Monetary)	As Of	Credit	ltm:NonCurrentAircraftAndEngineMaintenance
2140	Fleet financing (JOL)	Concept (Monetary)	As Of	Credit	ltm:NonCurrentFleetFinancingJOL
2141	Provision for vacations and bonuses	Concept (Monetary)	As Of	Credit	ltm:NonCurrentProvisionForVacationsAndBonuses
2142	Other sundry liabilities	Concept (Monetary)	As Of	Credit	ltm:NonCurrentOtherSundryLiabilities
2143	Total accounts payable, non-current	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentPayables
2144	00000180 - Disclosure - EQUITY (Details)	Network	*	*	http://latamairlinesgroup.net/role/EquityDetails
2145	Implied Table	Table	*	*	implied:Table
2146	Disclosure of classes of share capital [abstract]	Abstract			ifrs-full:DisclosureOfClassesOfShareCapitalAbstract
2147	Classes of share capital [Roll Forward]	Abstract			ltm:ClassesOfShareCapitalAbstract
2148	Opening balance	Concept (Shares)	As Of		ifrs-full:NumberOfSharesAuthorised
2149	Expired shares intended for compensation plans	Concept (Monetary)	For Period	Debit	ltm:ExpiredSharesIntendedForCompensationPlans
2150	Closing balance	Concept (Shares)	As Of		ifrs-full:NumberOfSharesAuthorised
2151	00000181 - Disclosure - EQUITY (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/EquityDetails1
2152	Statement of changes in equity [table]	Table	*	*	ifrs-full:StatementOfChangesInEquityTable
2153	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
2154	Equity [member]	Member			ifrs-full:EquityMember
2155	Number Of Shares [Member]	Member			ltm:FullyPaidSharesMember
2156	Movement Value Of Shares [Member]	Member			ltm:MovementValueOfSharesMember
2157	Cost Of Issuance And Placement Of Shares [Member]	Member			ltm:CostOfIssuanceAndPlacementOfSharesMember
2158	Share Capital [Member]	Member			ifrs-full:IssuedCapitalMember
2159	Statement of changes in equity [line items]	LineItems			ifrs-full:StatementOfChangesInEquityLineItems
2160	Equity [Roll Forward]	Abstract			ifrs-full:EquityAbstract
2161	Paid shares as of beginning of period	Concept (Monetary)	As Of	Credit	ifrs-full:IssuedCapital
2162	Paid shares as of beginning of period (in shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesIssuedAndFullyPaid
2163	Capital reserve	Concept (Monetary)	For Period	Debit	ltm:CapitalReserveValue
2164	Capital reserve (in shares)	Concept (Shares)	For Period		ltm:CapitalReserveNumberOfShares
2165	Paid shares as of end of period	Concept (Monetary)	As Of	Credit	ifrs-full:IssuedCapital
2166	Paid shares as of end of period (in shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesIssuedAndFullyPaid
2167	00000182 - Disclosure - EQUITY (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/EquityDetails2
2168	Disclosure of reserves within equity [table]	Table	*	*	ifrs-full:DisclosureOfReservesWithinEquityTable
2169	Reserves within equity [axis]	Axis			ifrs-full:ReservesWithinEquityAxis
2170	Total Other Reserve [Member]	Member			ifrs-full:OtherReservesMember
2171	Reserve of Share-Based Payments [Member]	Member			ifrs-full:ReserveOfSharebasedPaymentsMember
2172	Disclosure of reserves within equity [line items]	LineItems			ifrs-full:DisclosureOfReservesWithinEquityLineItems
2173	Equity [Roll Forward]	Abstract			ifrs-full:EquityAbstract
2174	Beginning balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
2175	Stock option plan	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
2176	Deferred tax	Concept (Monetary)	For Period		ifrs-full:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
2177	Net movement of the period	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughTransactionsWithOwners
2178	Ending balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
2179	00000183 - Disclosure - EQUITY (Details 3)	Network	*	*	http://latamairlinesgroup.net/role/EquityDetails3
2180	Disclosure of reserves within equity [table]	Table	*	*	ifrs-full:DisclosureOfReservesWithinEquityTable
2181	Reserves within equity [axis]	Axis			ifrs-full:ReservesWithinEquityAxis
2182	Total Other Reserve [Member]	Member			ifrs-full:OtherReservesMember
2183	Other Sundry Reserves [Member]	Member			ltm:ReserveOfOtherSundryReserveMember
2184	Disclosure of reserves within equity [line items]	LineItems			ifrs-full:DisclosureOfReservesWithinEquityLineItems
2185	Equity [Roll Forward]	Abstract			ifrs-full:EquityAbstract
2186	Beginning balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
2187	Legal reserves	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughTransactionsWithOwners
2188	Ending balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
2189	00000184 - Disclosure - EQUITY (Details 4)	Network	*	*	http://latamairlinesgroup.net/role/EquityDetails4
2190	Disclosure of reserves within equity [table]	Table	*	*	ifrs-full:DisclosureOfReservesWithinEquityTable
2191	Reserves within equity [axis]	Axis			ifrs-full:ReservesWithinEquityAxis
2192	Total Other Reserve [Member]	Member			ifrs-full:OtherReservesMember
2193	Other Sundry Reserves [Member]	Member			ltm:ReserveOfOtherSundryReserveMember
2194	Disclosure of reserves within equity [line items]	LineItems			ifrs-full:DisclosureOfReservesWithinEquityLineItems
2195	Higher value for TAM S.A. share exchange	Concept (Monetary)	As Of	Credit	ifrs-full:ReserveOfGainsAndLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstruments
2196	Reserve for the adjustment to the value of fixed assets	Concept (Monetary)	As Of	Credit	ifrs-full:RevaluationSurplus
2197	Transactions with non-controlling interest	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
2198	Cost of issuance and placement of shares	Concept (Monetary)	As Of	Credit	ltm:CostOfIssuanceAndPlacementOfShares
2199	Others	Concept (Monetary)	As Of	Credit	ltm:OthersSundryReserves
2200	Total equity	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
2201	00000185 - Disclosure - EQUITY (Details 5)	Network	*	*	http://latamairlinesgroup.net/role/EquityDetails5
2202	Statement of changes in equity [table]	Table	*	*	ifrs-full:StatementOfChangesInEquityTable
2203	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
2204	Equity [member]	Member			ifrs-full:EquityMember
2205	Currency Translation Reserve [Member]	Member			ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember
2206	Cash Flow Hedging Reserve [Member]	Member			ifrs-full:ReserveOfCashFlowHedgesMember
2207	Actuarial Gains Or Losses On Defined Benefit Plans Reserve [Member]	Member			ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember
2208	Other Comprehensive Income [Member]	Member			ltm:OtherComprehensiveIncome1Member
2209	Statement of changes in equity [line items]	LineItems			ifrs-full:StatementOfChangesInEquityLineItems
2210	Other comprehensive income [RollForward]	Abstract			ifrs-full:OtherComprehensiveIncomeAbstract
2211	Beginning balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
2212	Derivatives valuation gains (losses)	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnCashFlowHedgesNetOfTax
2213	Deferred tax	Concept (Monetary)	For Period		ifrs-full:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
2214	Tax effect on deferred tax by change legal tax rate (Tax reform)(*)	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome
2215	Actuarial reserves by employee benefit plans	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
2216	Deferred tax actuarial IAS by employee benefit plans	Concept (Monetary)	For Period	Debit	ltm:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity1
2217	Difference by subsidiaries conversion	Concept (Monetary)	For Period	Debit	ifrs-full:ReclassificationAdjustmentsOnHedgesOfNetInvestmentsInForeignOperationsNetOfTax
2218	Ending balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
2219	00000186 - Disclosure - EQUITY (Details 6)	Network	*	*	http://latamairlinesgroup.net/role/EquityDetails6
2220	Statement of changes in equity [table]	Table	*	*	ifrs-full:StatementOfChangesInEquityTable
2221	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
2222	Equity [member]	Member			ifrs-full:EquityMember
2223	Retained Earnings [Member]	Member			ifrs-full:RetainedEarningsMember
2224	Statement of changes in equity [line items]	LineItems			ifrs-full:StatementOfChangesInEquityLineItems
2225	Equity [Roll Forward]	Abstract			ifrs-full:EquityAbstract
2226	Beginning balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
2227	Result for the period	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughAppropriationOfRetainedEarnings
2228	Dividends	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsPaid
2229	Other increase (decreases)	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesEquity
2230	Ending balance	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
2231	00000187 - Disclosure - EQUITY (Details 7)	Network	*	*	http://latamairlinesgroup.net/role/EquityDetails7
2232	Statement [Table]	Table	*	*	us-gaap:StatementTable
2233	Geographical [Axis]	Axis			srt:StatementGeographicalAxis
2234	Geographical [Domain]	Member			srt:SegmentGeographicalDomain
2235	Argentina Hyperinflation [Member]	Member			country:AR
2236	Statement [Line Items]	LineItems			us-gaap:StatementLineItems
2237	Property, plant and equipment	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
2238	Intangible assets other than goodwill	Concept (Monetary)	As Of	Debit	ifrs-full:IntangibleAssetsOtherThanGoodwill
2239	Goodwill	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
2240	Deferred incomes	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredIncome
2241	Other non-financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherNonfinancialAssets
2242	Total Adjust accumulated results	Concept (Monetary)	As Of	Debit	ltm:TotalAdjustAccumulatedResults
2243	00000188 - Disclosure - EQUITY (Details 8)	Network	*	*	http://latamairlinesgroup.net/role/EquityDetails8
2244	Implied Table	Table	*	*	implied:Table
2245	Disclosure of classes of share capital [abstract]	Abstract			ifrs-full:DisclosureOfClassesOfShareCapitalAbstract
2246	Date of dividend	Concept (Date)	For Period		ltm:DateOfDividendRecognized
2247	Amount of the dividend	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToCurrentYear
2248	Number of shares among which the dividend is distributed	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsPaidOrdinaryShares
2249	Dividend per share (in dollars per share)	Concept (Share)	For Period		ifrs-full:DividendsPaidOrdinarySharesPerShare
2250	00000189 - Disclosure - EQUITY (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/EquityDetailsNarrative
2251	Statement of changes in equity [table]	Table	*	*	ifrs-full:StatementOfChangesInEquityTable
2252	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2253	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
2254	Lan Pax Group S.A. and Subsidiaries [Member]	Member			ltm:LanPaxGroupSAandSubsidiariesMember
2255	Inversiones Lan S.A. and Subsidiaries [Member]	Member			ltm:InversionesLanSAandSubsidiariesMember
2256	Aerovias de Integracion Regional Aires [Member]	Member			ltm:AeroviasdeIntegracionRegionalAires1Member
2257	Business combinations [axis]	Axis			ifrs-full:BusinessCombinationsAxis
2258	Entity's total for business combinations [member]	Member			ifrs-full:EntitysTotalForBusinessCombinationsMember
2259	Aerovias de Integracion Regional Aires [Member]	Member			ltm:AeroviasdeIntegracionRegionalAires1Member
2260	Lan S.A. [Member]	Member			ltm:LanSAMember
2261	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
2262	Entity [Domain]	Member			dei:EntityDomain
2263	Holdco I S.A [Member]	Member			ltm:HoldcoISAMember
2264	Classes of Share Capital [Axis]	Axis			ifrs-full:ClassesOfShareCapitalAxis
2265	Share capital [member]	Member			ifrs-full:ClassesOfShareCapitalMember
2266	Common/Ordinary Shares [Member]	Member			ifrs-full:OrdinarySharesMember
2267	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
2268	Equity [member]	Member			ifrs-full:EquityMember
2269	Number Of Shares [Member]	Member			ltm:FullyPaidSharesMember
2270	Movement Value Of Shares [Member]	Member			ltm:MovementValueOfSharesMember
2271	Statement of changes in equity [line items]	LineItems			ifrs-full:StatementOfChangesInEquityLineItems
2272	Number of shares subscribed and paid capital (in shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesIssuedAndFullyPaid
2273	Value of shares subscribed and paid capital	Concept (Monetary)	As Of	Debit	ltm:ValueOfSharesIssuedAndFullyPaid
2274	Capital reserve	Concept (Monetary)	For Period	Debit	ltm:CapitalReserveValue
2275	Increase (decrease) by transfers and other changes	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesEquity
2276	Increase (decrease) by transfers and other changes (in shares)	Concept (Shares)	For Period		ltm:IncreaseDecreaseThroughTransfersAndOtherChangesEquityShares
2277	Number of shares issued (in shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesIssued
2278	Number of shares placed (in shares)	Concept (Shares)	As Of		ltm:NumberOfSharesPlaced
2279	Number of revised authorized shares capital stock (in shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesAuthorised
2280	Number of shares pending of subscription and payment (in shares)	Concept (Shares)	As Of		ltm:NumberOfSharesSubscribedButUnissued1
2281	Number of shares allocated for stock option plan (in shares)	Concept (Shares)	As Of		ltm:NumberOfSharesAllocatedForStockOptionPlan
2282	Number of balances shares for placement of the last capital increase (in shares)	Concept (Shares)	As Of		ltm:NumberOfBalancesSharesForPlacementOfLastCapitalIncrease
2283	Number of previously authorized shares capital stock (in shares)	Concept (Shares)	As Of		ltm:NumberOfSharesAuthorised1
2284	Number of shares for subscription and payment expired (in shares)	Concept (Shares)	As Of		ltm:NumberOfSharesForSubscriptionAndPaymentExpired
2285	Number of shares for subscription and payment expired	Concept (Monetary)	As Of	Debit	ltm:NumberOfSharesForSubscriptionAndPaymentExpired1
2286	Number of additional shares subscription (in shares)	Concept (Shares)	As Of		ltm:NumberOfAdditionalSharesSubscriptionInShares
2287	Number of additional shares subscription	Concept (Monetary)	As Of	Debit	ltm:NumberOfAdditionalSharesSubscription
2288	Transactions with non-controlling interest	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
2289	Expired shares intended for compensation plans	Concept (Monetary)	For Period	Debit	ltm:ExpiredSharesIntendedForCompensationPlans
2290	Amount of the dividend	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToCurrentYear
2291	Issuance Cost	Concept (Monetary)	For Period	Debit	ifrs-full:ShareIssueRelatedCost
2292	00000190 - Disclosure - REVENUE (Details)	Network	*	*	http://latamairlinesgroup.net/role/RevenueDetails
2293	Disclosure of major customers [table]	Table	*	*	ifrs-full:DisclosureOfMajorCustomersTable
2294	Major Customers [Axis]	Axis			ifrs-full:MajorCustomersAxis
2295	Customers [member]	Member			ifrs-full:MajorCustomersMember
2296	Passenger [Member]	Member			ltm:LANPassengerMember
2297	Freight [Member]	Member			ltm:FreightMember
2298	Disclosure of major customers [line items]	LineItems			ifrs-full:DisclosureOfMajorCustomersLineItems
2299	Revenue	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
2300	00000191 - Disclosure - COSTS AND EXPENSES BY NATURE (Details)	Network	*	*	http://latamairlinesgroup.net/role/CostsAndExpensesByNatureDetails
2301	Implied Table	Table	*	*	implied:Table
2302	Material income and expense [abstract]	Abstract			ifrs-full:MaterialIncomeAndExpenseAbstract
2303	Aircraft fuel	Concept (Monetary)	For Period	Debit	ltm:AircraftFuelExpense
2304	Other rentals and landing fees	Concept (Monetary)	For Period	Debit	ltm:OtherRentalsAndLandingFeesExpense
2305	Aircraft rentals	Concept (Monetary)	For Period	Debit	ltm:AircraftRentalsExpense
2306	Aircraft maintenance	Concept (Monetary)	For Period	Debit	ltm:AircraftMaintenanceExpense
2307	Comissions	Concept (Monetary)	For Period	Debit	ltm:ComissionsExpense
2308	Passenger services	Concept (Monetary)	For Period	Debit	ltm:PassengerServicesExpense
2309	Other operating expenses	Concept (Monetary)	For Period	Credit	ifrs-full:OtherOperatingIncomeExpense
2310	Total	Concept (Monetary)	For Period	Debit	ifrs-full:OperatingExpense
2311	00000192 - Disclosure - COSTS AND EXPENSES BY NATURE (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/CostsAndExpensesByNatureDetails1
2312	Implied Table	Table	*	*	implied:Table
2313	Material income and expense [abstract]	Abstract			ifrs-full:MaterialIncomeAndExpenseAbstract
2314	Depreciation	Concept (Monetary)	For Period	Debit	ifrs-full:DepreciationExpense
2315	Amortization	Concept (Monetary)	For Period	Debit	ifrs-full:AmortisationExpense
2316	Total	Concept (Monetary)	For Period	Debit	ifrs-full:DepreciationAndAmortisationExpense
2317	00000193 - Disclosure - COSTS AND EXPENSES BY NATURE (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/CostsAndExpensesByNatureDetails2
2318	Implied Table	Table	*	*	implied:Table
2319	Material income and expense [abstract]	Abstract			ifrs-full:MaterialIncomeAndExpenseAbstract
2320	Bank loan interest	Concept (Monetary)	For Period	Debit	ltm:BankLoanInterest
2321	Financial leases	Concept (Monetary)	For Period	Credit	ifrs-full:CashOutflowForLeases
2322	Other financial instruments	Concept (Monetary)	For Period	Debit	ltm:OtherFinancialInstruments
2323	Total	Concept (Monetary)	For Period	Debit	ifrs-full:FinanceCosts
2324	00000194 - Disclosure - COSTS AND EXPENSES BY NATURE (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/CostsAndExpensesByNatureDetailsNarrative
2325	Implied Table	Table	*	*	implied:Table
2326	Material income and expense [abstract]	Abstract			ifrs-full:MaterialIncomeAndExpenseAbstract
2327	Maintenance cost of aircraft held	Concept (Monetary)	For Period	Debit	ifrs-full:RepairsAndMaintenanceExpense
2328	00000195 - Disclosure - OTHER INCOME, BY FUNCTION (Details)	Network	*	*	http://latamairlinesgroup.net/role/OtherIncomeByFunctionDetails
2329	Implied Table	Table	*	*	implied:Table
2330	Material income and expense [abstract]	Abstract			ifrs-full:MaterialIncomeAndExpenseAbstract
2331	Coalition and loyalty program Multiplus	Concept (Monetary)	For Period	Credit	ltm:CoalitionAndLoyaltyProgramMultiplusIncome
2332	Tours	Concept (Monetary)	For Period	Credit	ltm:ToursIncome
2333	Aircraft leasing	Concept (Monetary)	For Period	Credit	ltm:AircraftLeasingIncome
2334	Customs and warehousing	Concept (Monetary)	For Period	Credit	ltm:CustomsAndWarehousingIncome
2335	Maintenance	Concept (Monetary)	For Period	Credit	ltm:RepairsAndMaintenanceExpenseIncome
2336	Duty free	Concept (Monetary)	For Period	Credit	ltm:DutyFreeIncome
2337	Other miscellaneous income	Concept (Monetary)	For Period	Credit	ifrs-full:MiscellaneousOtherOperatingIncome
2338	Total	Concept (Monetary)	For Period	Credit	ifrs-full:OtherIncome
2339	00000196 - Disclosure - FOREIGN CURRENCY AND EXCHANGE RATE DIFFERENCES (Details)	Network	*	*	http://latamairlinesgroup.net/role/ForeignCurrencyAndExchangeRateDifferencesDetails
2340	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
2341	Currency [Axis]	Axis			srt:CurrencyAxis
2342	All Currencies [Domain]	Member			currency:AllCurrenciesDomain
2343	Argentina, Pesos	Member			currency:ARS
2344	Brazil, Brazil Real	Member			currency:BRL
2345	Chile, Pesos	Member			currency:CLP
2346	Colombia, Pesos	Member			currency:COP
2347	Euro Member Countries, Euro	Member			currency:EUR
2348	United States of America, Dollars	Member			currency:USD
2349	Peru, Nuevos Soles	Member			currency:PEN
2350	Other currency	Member			currency:XXX
2351	Disclosure of subsidiaries [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
2352	Cash and cash equivalents	Concept (Monetary)	As Of	Debit	ltm:CashAndCashEquivalents1
2353	Other financial assets, current	Concept (Monetary)	As Of	Debit	ltm:OtherCurrentFinancialAssets1
2354	Other non-financial assets, current	Concept (Monetary)	As Of	Debit	ltm:OtherCurrentNonfinancialAssets1
2355	Trade and other accounts receivable, current	Concept (Monetary)	As Of	Debit	ltm:TradeAndOtherCurrentReceivables1
2356	Accounts receivable from related entities, current	Concept (Monetary)	As Of	Debit	ltm:AccountsReceivableRelatedPartiesCurrent1
2357	Tax current assets	Concept (Monetary)	As Of	Debit	ltm:CurrentTaxAssetsCurrent1
2358	Total current assets	Concept (Monetary)	As Of	Debit	ltm:CurrentAssets1
2359	Other financial assets, non-current	Concept (Monetary)	As Of	Debit	ltm:OtherNoncurrentFinancialAssets1
2360	Other non-financial assets, non-current	Concept (Monetary)	As Of	Debit	ltm:OtherNoncurrentNonfinancialAssets1
2361	Accounts receivable, non-current	Concept (Monetary)	As Of	Debit	ltm:AccountsReceivableNoncurrent
2362	Deferred tax assets	Concept (Monetary)	As Of	Debit	ltm:DeferredTaxAssets1
2363	Total non-current assets	Concept (Monetary)	As Of	Debit	ltm:NoncurrentAssets1
2364	00000197 - Disclosure - FOREIGN CURRENCY AND EXCHANGE RATE DIFFERENCES (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/ForeignCurrencyAndExchangeRateDifferencesDetails1
2365	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
2366	Maturity [axis]	Axis			ifrs-full:MaturityAxis
2367	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
2368	Up to 90 days [Member]	Member			ifrs-full:NotLaterThanThreeMonthsMember
2369	More than 90 days to one year [Member]	Member			ifrs-full:LaterThanThreeMonthsAndNotLaterThanOneYearMember
2370	More than one to three years [Member]	Member			ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
2371	More than three to five years [Member]	Member			ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
2372	Over five years [Member]	Member			ifrs-full:LaterThanFiveYearsMember
2373	Currency [Axis]	Axis			srt:CurrencyAxis
2374	All Currencies [Domain]	Member			currency:AllCurrenciesDomain
2375	Chile, Pesos	Member			currency:CLP
2376	United States of America, Dollars	Member			currency:USD
2377	Argentina, Pesos	Member			currency:ARS
2378	Brazil, Brazil Real	Member			currency:BRL
2379	Colombia, Pesos	Member			currency:COP
2380	Euro Member Countries, Euro	Member			currency:EUR
2381	Venezuelan bolivar fuerte	Member			currency:VEF
2382	Peru, Nuevos Soles	Member			currency:PEN
2383	Mexico, Pesos	Member			currency:MXN
2384	South Sudan pound	Member			currency:SSP
2385	Uruguay, Pesos	Member			currency:UYU
2386	Other currency	Member			currency:XXX
2387	Disclosure of subsidiaries [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
2388	Other financial liabilities, current	Concept (Monetary)	As Of	Credit	ifrs-full:OtherFinancialLiabilities
2389	Trade and other accounts payables, current	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayables
2390	Accounts payable to related entities, current	Concept (Monetary)	As Of	Credit	ltm:AccountsPayableToRelatedPartiesCurrent
2391	Other provisions, current	Concept (Monetary)	As Of	Credit	ifrs-full:OtherShorttermProvisions
2392	Tax liabilities, current	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentTaxLiabilitiesCurrent
2393	Other financial liabilities, non-current	Concept (Monetary)	As Of	Credit	ifrs-full:OtherCurrentNonfinancialLiabilities
2394	Total current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilities
2395	Other financial liabilities, non-current	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentFinancialLiabilities
2396	Accounts payable, non-current	Concept (Monetary)	As Of	Credit	ltm:AccountsPayableToRelatedPartiesNoncurrent
2397	Other provisions, non-current	Concept (Monetary)	As Of	Credit	ifrs-full:OtherLongtermProvisions
2398	Provisions for employees benefits, non-current	Concept (Monetary)	As Of	Credit	ifrs-full:ProvisionsForEmployeeBenefits
2399	Other non-financial liabilities, non-current	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentNonfinancialLiabilities
2400	Total non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentLiabilities
2401	00000198 - Disclosure - FOREIGN CURRENCY AND EXCHANGE RATE DIFFERENCES (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/ForeignCurrencyAndExchangeRateDifferencesDetails2
2402	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
2403	Currency [Axis]	Axis			srt:CurrencyAxis
2404	All Currencies [Domain]	Member			currency:AllCurrenciesDomain
2405	Argentina, Pesos	Member			currency:ARS
2406	Brazil, Brazil Real	Member			currency:BRL
2407	Chile, Pesos	Member			currency:CLP
2408	Colombia, Pesos	Member			currency:COP
2409	Euro Member Countries, Euro	Member			currency:EUR
2410	United States of America, Dollars	Member			currency:USD
2411	Other currency	Member			currency:XXX
2412	Disclosure of subsidiaries [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
2413	Total assets	Concept (Monetary)	As Of	Debit	ltm:Assets1
2414	Total liabilities	Concept (Monetary)	As Of	Credit	ltm:TotalLiabilities
2415	Net position	Concept (Monetary)	As Of	Debit	ltm:NetPosition
2416	00000199 - Disclosure - FOREIGN CURRENCY AND EXCHANGE RATE DIFFERENCES (Details 3)	Network	*	*	http://latamairlinesgroup.net/role/ForeignCurrencyAndExchangeRateDifferencesDetails3
2417	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
2418	Currency [Axis]	Axis			srt:CurrencyAxis
2419	All Currencies [Domain]	Member			currency:AllCurrenciesDomain
2420	Argentina, Pesos	Member			currency:ARS
2421	Brazil, Brazil Real	Member			currency:BRL
2422	Chile, Pesos	Member			currency:CLP
2423	Colombia, Pesos	Member			currency:COP
2424	Euro Member Countries, Euro	Member			currency:EUR
2425	Venezuelan bolivar fuerte	Member			currency:VEF
2426	Sovereign bolivar	Member			ltm:VEF1Member
2427	Australia, Dollars	Member			currency:AUD
2428	Bolivia, Bolivianos	Member			currency:BOB
2429	Mexico, Pesos	Member			currency:MXN
2430	New Zealand, Dollars	Member			currency:NZD
2431	Peru, Nuevos Soles	Member			currency:PEN
2432	Uruguay, Pesos	Member			currency:UYU
2433	Disclosure of subsidiaries [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
2434	Exchange rate (in dollars per share)	Concept (Decimal)	As Of		ifrs-full:ClosingForeignExchangeRate
2435	00000200 - Disclosure - FOREIGN CURRENCY AND EXCHANGE RATE DIFFERENCES (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/ForeignCurrencyAndExchangeRateDifferencesDetailsNarrative
2436	Implied Table	Table	*	*	implied:Table
2437	Foreign exchange rates [abstract]	Abstract			ifrs-full:ForeignExchangeRatesAbstract
2438	Exchange differences recognized in the profit or loss statement	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
2439	Exchange differences recognized in equity statement of comprehensive income as reserves	Concept (Monetary)	As Of	Credit	ifrs-full:ReserveOfExchangeDifferencesOnTranslation
2440	00000201 - Disclosure - EARNINGS / (LOSS) PER SHARE (Details)	Network	*	*	http://latamairlinesgroup.net/role/EarningsLossPerShareDetails
2441	Implied Table	Table	*	*	implied:Table
2442	Earnings Loss Per Share	Abstract			ltm:EarningsLossPerShareAbstract
2443	Basic earnings / (loss) per share	Abstract			ifrs-full:BasicEarningsPerShareAbstract
2444	Earnings / (loss) attributable to owners of the parent	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToOwnersOfParent
2445	Weighted average number of shares, basic (in shares)	Concept (Shares)	For Period		ltm:WeightedAverageSharesBasic
2446	Basic earnings / (loss) per share (US$) (in dollars per share)	Concept (Share)	For Period		ifrs-full:BasicEarningsLossPerShare
2447	Diluted earnings / (loss) per share	Abstract			ifrs-full:DilutedEarningsPerShareAbstract
2448	Earnings / (loss) attributable to owners of the parent	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToOwnersOfParent
2449	Weighted average number of shares, basic (in shares)	Concept (Shares)	For Period		ltm:WeightedAverageSharesBasic
2450	Weighted average number of shares, diluted (in shares)	Concept (Shares)	For Period		ltm:WeightedAverageSharesDiluted
2451	Diluted earnings / (loss) per share (US$) (in dollars per share)	Concept (Share)	For Period		ifrs-full:DilutedEarningsLossPerShare
2452	00000202 - Disclosure - CONTINGENCIES (Details)	Network	*	*	http://latamairlinesgroup.net/role/ContingenciesDetails
2453	Disclosure of contingent liabilities [table]	Table	*	*	ifrs-full:DisclosureOfContingentLiabilitiesTable
2454	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2455	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
2456	LATAM Airlines Group S.A. y Lan Cargo S.A. [Member]	Member			ltm:LATAMAirlinesGroupSAyLanCargoSAMember
2457	Lan Airlines S.A. [Member]	Member			ltm:LanAirlinesSAMember
2458	Atlantic Aviation Investments, LLC (AAI) [Member]	Member			ltm:AtlanticAviationInvestmentsLLCAAIMember
2459	Tam Viagens S.A. [Member]	Member			ltm:TamViagensSAMember
2460	Lan Cargo S.A. y LATAM Airlines Group S.A. [Member]	Member			ltm:LanCargoSAyLATAMAirlinesGroupSAMember
2461	Aerolinhas Brasileiras S.A. [Member]	Member			ltm:AerolinhasBrasileirasSAMember
2462	Aerolinhas Brasileiras S.A. [Member]	Member			ltm:AerolinhasBrasileirasSA1Member
2463	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA2Member
2464	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA3Member
2465	Aerovias de Integracion Regional, AIRES S.A. [Member]	Member			ltm:AeroviasdeIntegracionRegionalAIRESSA1Member
2466	Aerovias de Integracion Regional, AIRES S.A. [Member]	Member			ltm:AeroviasdeIntegracionRegionalAIRESSAMember
2467	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA7Member
2468	TAM S.A. and Subsidiaries [Member]	Member			ltm:TAMSAAndSubsidiariesMember
2469	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA9Member
2470	LATAM Airlines Group S.A. [Member]	Member			ltm:LATAMAirlinesGroupMember
2471	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA11Member
2472	Tam Linhas Aereas S.A. [Member]	Member			ltm:TAMLinhasAereasSAMember
2473	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA10Member
2474	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA1Member
2475	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA5Member
2476	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA6Member
2477	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA12Member
2478	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA20Member
2479	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA13Member
2480	SNEA (Sindicato Nacional das empresas aeroviarias) [Member]	Member			ltm:SindicatoNacionalDasEmpresasAeroviariasMember
2481	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA15Member
2482	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA14Member
2483	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA16Member
2484	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA17Member
2485	Tam Linhas Aereas S.A. [Member]	Member			ltm:TamLinhasAereasSA18Member
2486	Aerovias de Integracion Regional, AIRES S.A. [Member]	Member			ltm:AeroviasdeIntegracionRegionalAIRESSA111Member
2487	Disclosure of contingent liabilities [line items]	LineItems			ifrs-full:DisclosureOfContingentLiabilitiesLineItems
2488	Amounts committed	Concept (Monetary)	As Of		ifrs-full:EstimatedFinancialEffectOfContingentLiabilities
2489	Investigation of payments	Concept (Monetary)	As Of	Debit	ltm:InvestigationPayment
2490	Agreement term	Concept (xbrli:durationItemType)	For Period		ltm:AgreementTerm
2491	Explanation of possibility of reimbursement, contingent liabilities	Concept (Text/String)	For Period		ifrs-full:ExplanationOfPossibilityOfReimbursementContingentLiabilities
2492	Payable to SEC	Concept (Monetary)	As Of	Credit	ltm:CurrentSECAgreement
2493	00000203 - Disclosure - COMMITMENTS (Details)	Network	*	*	http://latamairlinesgroup.net/role/CommitmentsDetails
2494	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
2495	Legal Entity [Axis]	Axis			dei:LegalEntityAxis
2496	Entity [Domain]	Member			dei:EntityDomain
2497	ACS Aero 1 Alpha Limited [Member]	Member			ltm:ACSAero1AlphaLimitedMember
2498	Aircraft 76B-26329 Inc. [Member]	Member			ltm:Aircraft76B26329IncMember
2499	Aircraft 76B-28206 Inc.[Member]	Member			ltm:Aircraft76B28206IncMember
2500	Aviacion Centaurus, A.I.E. [Member]	Member			ltm:AviacionCentaurusAIEMember
2501	Aviacion Centaurus, A.I.E. 1 [Member]	Member			ltm:AviaciionCentaurusAIE1Member
2502	Aviacion Real A.I.E. [Member]	Member			ltm:AviacionRealAIEMember
2503	Aviacion Real A.I.E. 1 [Member]	Member			ltm:AviacionRealAIE1Member
2504	Aviacion Triton A.I.E. [Member]	Member			ltm:AviacionTritonAIEMember
2505	Avolon Aerospace AOE 62 Limited [Member]	Member			ltm:AvolonAerospaceAOE62LimitedMember
2506	Avolon Aerospace AOE 99 Limited [Member]	Member			ltm:AvolonAerospaceAOE99LimitedMember
2507	Avolon Aerospace AOE 100 Limited [Member]	Member			ltm:AvolonAerospaceAOE100LimitedMember
2508	Avolon Aerospace AOE 134 Limited [Member]	Member			ltm:AvolonAerospaceAOE134LimitedMember
2509	AWAS 5234 Trust [Member]	Member			ltm:AWAS5234TrustMember
2510	Baker & Spice Aviation Limited [Member]	Member			ltm:BakerAndSpiceAviationLimitedMember
2511	Bank of America [Member]	Member			ltm:BankOfAmericaMember
2512	Bank of Utah [Member]	Member			ltm:BankOfUtahMember
2513	Boeing Aircraft Holding Company [Member]	Member			ltm:BoeingAircraftHoldingCompanyMember
2514	Castlelake [Member]	Member			ltm:CastlelakeMember
2515	Chishima Real State Co Ltd [Member]	Member			ltm:ChishimaRealStateCoLtdMember
2516	ECAF I 2838 DAC [Member]	Member			ltm:ECAFI2838DACMember
2517	ECAF I 40589 DAC [Member]	Member			ltm:ECAFI40589DACMember
2518	Eden Irish Aircr Leasing MSN 1459 [Member]	Member			ltm:EdenIrishAircrLeasingMSN1459Member
2519	IC Airlease One Limited [Member]	Member			ltm:ICAirleaseOneLimitedMember
2520	JSA Aircraft 38484, LLC [Member]	Member			ltm:JSAAircraft38484LLCMember
2521	JSA Aircraft 7126, LLC [Member]	Member			ltm:JSAAircraft7126LLCMember
2522	JSA Aircraft 7128, LLC [Member]	Member			ltm:JSAAircraft7128LLCMember
2523	JSA Aircraft 7239, LLC [Member]	Member			ltm:JSAAircraft7239LLCMember
2524	JSA Aircraft 7298, LLC [Member]	Member			ltm:JSAAircraft7298LLCMember
2525	Macquarie Aerospace Finance 5125-2 Trust [Member]	Member			ltm:MacquarieAerospaceFinance51252TrustMember
2526	Macquarie Aerospace Finance 5178 Limited [Member]	Member			ltm:MacquarieAerospaceFinance5178LimitedMember
2527	Merlin Aviation Leasing (Ireland) 18 Limited [Member]	Member			ltm:MerlinAviationLeasingIreland18LimitedMember
2528	Merlin Aviation Leasing (Ireland) 7 Limited [Member]	Member			ltm:MerlinAviationLeasingIreland7LimitedMember
2529	NBB Crow Co.,Ltd [Member]	Member			ltm:NBBCrowCoLtdMember
2530	NBB Cuckoo Co., Ltd [Member]	Member			ltm:NBBCuckooCoLtdMember
2531	NBB Grosbeak Co., Ltd [Member]	Member			ltm:NBBGrosbeakCoLtdMember
2532	NBB Redstart Co. Ltd [Member]	Member			ltm:NBBRedstartCoLtdMember
2533	NBB-6658 Lease Partnership [Member]	Member			ltm:NBB6658LeasePartnershipMember
2534	NBB-6670 Lease Partnership [Member]	Member			ltm:NBB6670LeasePartnershipMember
2535	Orix Aviation Systems Limited [Member]	Member			ltm:OrixAviationSystemsLimitedMember
2536	PAAL Aquila Company Limited [Member]	Member			ltm:PAALAquilaCompanyLimitedMember
2537	Sapphire Leasing I AOE 7 Limited [Member]	Member			ltm:SapphireLeasingIAOE7LimitedMember
2538	Shenton Aircraft Leasing Limited [Member]	Member			ltm:ShentonAircraftLeasingLimitedMember
2539	Sky High XXIV Leasing Company Limited [Member]	Member			ltm:SkyHighXXIVLeasingCompanyLimitedMember
2540	Sky High XXV Leasing Company Limited [Member]	Member			ltm:SkyHighXXVLeasingCompanyLimitedMember
2541	SMBC Aviation Capital Limited [Member]	Member			ltm:SMBCAviationCapitalLimitedMember
2542	SMBC Aviation Capital Limited [Member]	Member			ltm:SMBCAviationCapitalLimited12Member
2543	Wells Fargo Trust Company, N.A. [Member]	Member			ltm:WellsFargoTrustCompanyNAMember
2544	Wilgmington Trust SP Services (Dublin) Limited [Member]	Member			ltm:WilgmingtonTrustSPServicesDublinLimitedMember
2545	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
2546	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
2547	Airbus A320 [Member]	Member			ltm:AirbusA320Member
2548	Boeing 767 [Member]	Member			ltm:Boeing767Member
2549	Boeing 767 [Member]	Member			ltm:Boeing1767Member
2550	Airbus A319 [Member]	Member			ltm:Airbus1A319Member
2551	Airbus A321 [Member]	Member			ltm:AirbusA321Member
2552	Airbus A319 [Member]	Member			ltm:Airbus2A319Member
2553	Airbus A319 [Member]	Member			ltm:Airbus3A319Member
2554	Boeing 777 [Member]	Member			ltm:Boeing777Member
2555	Airbus A320 [Member]	Member			ltm:Airbus1A320Member
2556	Airbus A320 [Member]	Member			ltm:Airbus3A320Member
2557	Airbus A320 [Member]	Member			ltm:Airbus6A320Member
2558	Airbus A320 [Member]	Member			ltm:Airbus7A320Member
2559	Airbus A321 [Member]	Member			ltm:Airbus1A321Member
2560	Airbus A350 [Member]	Member			ltm:AirbusA350Member
2561	Boeing 787 [Member]	Member			ltm:Boeing1787Member
2562	Airbus A319 [Member]	Member			ltm:Airbus9A319Member
2563	Airbus A320 [Member]	Member			ltm:Airbus10A320Member
2564	Boeing 777 [Member]	Member			ltm:Boeing1777Member
2565	Airbus A320 [Member]	Member			ltm:Airbus11A320Member
2566	Airbus A321 [Member]	Member			ltm:Airbus2A321Member
2567	Boeing 787 [Member]	Member			ltm:Boeing787Member
2568	Airbus A320 [Member]	Member			ltm:Airbus14A320Member
2569	Airbus A321 [Member]	Member			ltm:Airbus3A321Member
2570	Airbus A321 [Member]	Member			ltm:Airbus4A321Member
2571	Airbus A321 [Member]	Member			ltm:Airbus5A321Member
2572	Airbus A320 [Member]	Member			ltm:Airbus15A320Member
2573	Airbus A320 [Member]	Member			ltm:Airbus16A320Member
2574	Airbus A320 [Member]	Member			ltm:Airbus22A320Member
2575	Airbus A321 [Member]	Member			ltm:Airbus6A321Member
2576	Airbus A321 [Member]	Member			ltm:Airbus7A321Member
2577	Airbus A321 [Member]	Member			ltm:Airbus8A321Member
2578	Airbus A321 [Member]	Member			ltm:Airbus9A321Member
2579	Airbus A321 [Member]	Member			ltm:Airbus10A321Member
2580	Airbus A320 [Member]	Member			ltm:Airbus23A320Member
2581	Airbus A321 [Member]	Member			ltm:Airbus11A321Member
2582	Airbus A320 [Member]	Member			ltm:Airbus24A320Member
2583	Airbus A320 [Member]	Member			ltm:Airbus26A320Member
2584	Airbus A320 [Member]	Member			ltm:Airbus27A320Member
2585	Airbus A320 [Member]	Member			ltm:Airbus28A320Member
2586	Airbus A319 [Member]	Member			ltm:AirbusA319Member
2587	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
2588	Number of aircraft under operating leases	Concept (Integer)	For Period		ltm:NumberOfAircraftUnderOperatingLease
2589	00000204 - Disclosure - COMMITMENTS (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/CommitmentsDetails1
2590	Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [table]	Table	*	*	ifrs-full:DisclosureOfAmountsToBeRecoveredOrSettledAfterTwelveMonthsForClassesOfAssetsAndLiabilitiesThatContainAmountsToBeRecoveredOrSettledBothNoMoreAndMoreThanTwelveMonthsAfterReportingDateTable
2591	Maturity [axis]	Axis			ifrs-full:MaturityAxis
2592	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
2593	Not Later Than One Year [Member]	Member			ifrs-full:NotLaterThanOneYearMember
2594	Between One And Five Years [Member]	Member			ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
2595	Over five years [Member]	Member			ifrs-full:LaterThanFiveYearsMember
2596	Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]	LineItems			ifrs-full:DisclosureOfAmountsToBeRecoveredOrSettledAfterTwelveMonthsForClassesOfAssetsAndLiabilitiesThatContainAmountsToBeRecoveredOrSettledBothNoMoreAndMoreThanTwelveMonthsAfterReportingDateLineItems
2597	Minimum future lease payments not yet payable	Concept (Monetary)	As Of	Credit	ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
2598	00000205 - Disclosure - COMMITMENTS (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/CommitmentsDetails2
2599	Implied Table	Table	*	*	implied:Table
2600	Commitments	Abstract			ltm:CommitmentsAbstract
2601	Minimum operating lease payments	Concept (Monetary)	For Period	Debit	ifrs-full:MinimumOperatingLeasePayments
2602	Total	Concept (Monetary)	For Period	Debit	ifrs-full:LeaseAndSubleasePaymentsRecognisedAsExpense
2603	00000208 - Disclosure - COMMITMENTS (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/CommitmentsDetailsNarrative
2604	Disclosure of transactions between related parties [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2605	Categories Of Related Parties [Axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
2606	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
2607	LATAM Airlines Group S.A. [Member]	Member			ltm:LATAMAirlinesGroupSAMember
2608	Tam Linhas Aereas S.A. [Member]	Member			ltm:TAMLinhasAereasSAMember
2609	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
2610	Property, plant and equipment [member]	Member			ifrs-full:PropertyPlantAndEquipmentMember
2611	Airbus A321 200 [Member]	Member			ltm:AirbusA321200Member
2612	Boeing 777-200ER [Member]	Member			ltm:Boeing777200ERMember
2613	A350 900 [Member]	Member			ltm:A350900Member
2614	Airbus A320-200 [Member]	Member			ltm:AirbusA320200Member
2615	Boeing 767 300 [Member]	Member			ltm:Boeing767300Member
2616	Boeing 777 300 [Member]	Member			ltm:Boeing777300Member
2617	Disclosure of transactions between related parties [line items]	LineItems			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2618	Revolving credit facility	Concept (Monetary)	As Of	Credit	ltm:LineOfCreditRevolvingFacility
2619	Number of Aircraft added	Concept (Integer)	For Period		ltm:NumberOfAircraft
2620	Operating lease term	Concept (xbrli:durationItemType)	For Period		ltm:OperatingLeaseTerm
2621	Number of aircraft returned	Concept (Integer)	For Period		ltm:NumberOfAircraftReturned
2622	Number of aircraft sold	Concept (Integer)	For Period		ltm:NumberOfAircraftSold
2623	00000209 - Disclosure - TRANSACTIONS WITH RELATED PARTIES (Details)	Network	*	*	http://latamairlinesgroup.net/role/TransactionsWithRelatedPartiesDetails
2624	Disclosure of transactions between related parties [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2625	Categories Of Related Parties [Axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
2626	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
2627	Inversiones Costa Verde Ltda. y CPA. [Member]	Member			ltm:RelatedDirectorMember
2628	Comunidad Mujer [Member]	Member			ltm:RelatedDirector1Member
2629	Bethia S.A and Subsidiaries [Member]	Member			ltm:RelatedDirector2Member
2630	Transportes San Felipe S.A [Member]	Member			ltm:RelatedDirector4Member
2631	Granja Marina Tornagaleones S.A. [Member]	Member			ltm:CommonShareholderMember
2632	Consultoria Administrativa Profesional S.A. de C.V. [Member]	Member			ltm:Associates1Member
2633	Inversora Aeronautica Argentina S.A. [Member]	Member			ltm:RelatedDirector5Member
2634	TAM Aviacao Executiva e Taxi Aereo S/A [Member]	Member			ltm:RelatedDirector6Member
2635	Qatar Airways [Member]	Member			ltm:QatarAirwaysMember
2636	Disclosure of transactions between related parties [line items]	LineItems			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2637	Tax No	Concept (Text/String)	For Period		ifrs-full:NameOfReportingEntityOrOtherMeansOfIdentification
2638	Nature of relationship with related parties	Concept (Text/String)	For Period		ifrs-full:DescriptionOfNatureOfRelatedPartyRelationship
2639	Currency	Concept (Text/String)	For Period		ifrs-full:DescriptionOfPresentationCurrency
2640	Country of origin	Concept (Text/String)	For Period		ifrs-full:DomicileOfEntity
2641	Tickets sales	Concept (Monetary)	For Period	Debit	ltm:TicketsSalesRelatedPartyTransactions
2642	Property leases received	Concept (Monetary)	For Period		ifrs-full:LeasesAsLessorRelatedPartyTransactions
2643	Training services received	Concept (Monetary)	For Period	Debit	ltm:ServicesReceivedRelatedPartyTransactions7
2644	Training services received	Concept (Monetary)	For Period	Debit	ltm:ServicesReceivedRelatedPartyTransactions8
2645	Services provided for advertising	Concept (Monetary)	For Period	Debit	ltm:ServicesProvidedRelatedPartyTransactions
2646	Services received of cargo transport	Concept (Monetary)	For Period	Debit	ltm:ServicesReceivedRelatedPartyTransactions4
2647	Services received from National and International	Concept (Monetary)	For Period	Debit	ltm:ServicesReceivedRelatedPartyTransactions3
2648	Courier	Concept (Monetary)	For Period	Debit	ltm:Courier
2649	Services provided of cargo transport	Concept (Monetary)	For Period	Debit	ltm:ServicesProvidedRelatedPartyTransactions1
2650	Other services received	Concept (Monetary)	For Period	Debit	ltm:ServicesReceivedRelatedPartyTransactions6
2651	Sales commissions	Concept (Monetary)	For Period	Debit	ltm:SalesCommissionsRelatedPartyTransactions
2652	Services received of transfer of passengers	Concept (Monetary)	For Period	Debit	ltm:ServicesReceivedRelatedPartyTransactions2
2653	Services received advertising	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromRenderingOfAdvertisingServices
2654	Professional counseling services received	Concept (Monetary)	For Period	Debit	ltm:ServicesReceivedRelatedPartyTransactions5
2655	Revenue billboard advertising maintaining	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromRenderingOfServicesRelatedPartyTransactions
2656	Professional counseling servies received	Concept (Monetary)	For Period	Debit	ltm:ServicesReceivedRelatedPartyTransactions1
2657	Services provided by aircraft lease	Concept (Monetary)	For Period	Debit	ltm:ServicesProvidedByAircraftLease
2658	Interlineal received service	Concept (Monetary)	For Period	Credit	ltm:InterlinealReceivedService
2659	Interlineal provided service	Concept (Monetary)	For Period	Debit	ltm:InterlinealProvidedService
2660	Services provided of handling	Concept (Monetary)	For Period	Debit	ltm:ServicesProvidedOfHandling
2661	Services provided / received others	Concept (Monetary)	For Period	Debit	ltm:ServicesProvidedReceivedOthers
2662	Services received at airports	Concept (Monetary)	For Period	Debit	ltm:ServicesReceivedAtAirports
2663	00000210 - Disclosure - TRANSACTIONS WITH RELATED PARTIES (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/TransactionsWithRelatedPartiesDetails1
2664	Disclosure of transactions between related parties [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2665	Categories Of Related Parties [Axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
2666	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
2667	Key Management Personnel Of Entity Or Parent [Member]	Member			ifrs-full:KeyManagementPersonnelOfEntityOrParentMember
2668	Disclosure of transactions between related parties [line items]	LineItems			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2669	Remuneration	Concept (Monetary)	For Period	Debit	ltm:KeyManagementPersonnelCompensationRemuneration
2670	Management fees	Concept (Monetary)	For Period	Debit	ltm:KeyManagementPersonnelCompensationManagementFees
2671	Non-monetary benefits	Concept (Monetary)	For Period	Debit	ltm:KeyManagementPersonnelCompensationNonMonetaryBenefits
2672	Short-term benefits	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
2673	Long-term benefits	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationOtherLongtermBenefits
2674	Share-based payments	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
2675	Termination benefits	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationTerminationBenefits
2676	Total	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensation
2677	00000216 - Disclosure - STATEMENT OF CASH FLOWS (Details)	Network	*	*	http://latamairlinesgroup.net/role/StatementOfCashFlowsDetails
2678	Implied Table	Table	*	*	implied:Table
2679	Statement Of Cash Flows	Abstract			ltm:DisclosureOfCashFlowStatementAbstract
2680	Fuel hedge	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromFuelHedgeOperatingActivities
2681	Hedging margin guarantees	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromHedgingMarginGuaranteesOperatingActivities
2682	Guarantees	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromGuaranteesOperatingActivities
2683	Tax paid on bank transaction	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromTaxPaidOnBankTransactionOperatingActivities
2684	Change reservation systems	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromChangeReservationSystemsOperatingActivities
2685	SEC agreement	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromSECAgreementOperatingActivities
2686	DOJ fine	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromDOJFineOperatingActivities
2687	Currency hedge	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromCurrencyHedgeOperatingActivities
2688	Bank commissions, taxes paid and other	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromBankCommissionsTaxesPaidAndOtherOperatingActivities
2689	Fuel derivatives premiums	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromFuelDerivativesPremiumsOperatingActivities
2690	Court deposits	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromCourtDepositsOperatingActivities
2691	Others	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromOthersOperatingActivities
2692	Total Other inflows (outflows) Operation flow	Concept (Monetary)	For Period	Debit	ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities
2693	Others deposits in guarantees	Concept (Monetary)	For Period	Debit	ltm:OthersDepositsInGuarantees
2694	Recovery loans convertible into shares	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromRecoveryLoansConvertibleIntoSharesInvestingActivities
2695	Certificate of bank deposits	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromCertificateOfBankDepositsInvestingActivities
2696	Tax paid on bank transaction	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromTaxPaidOnBankTransactionInvestingActivities
2697	Others	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromOthersInvestingActivities
2698	Total Other inflows (outflows) Investment flow	Concept (Monetary)	For Period	Debit	ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities
2699	Loan guarantee	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromLoanGuaranteeFinancingActivities
2700	Aircraft Financing advances	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromAircraftFinancingAdvancesFinancingActivities
2701	Settlement of derivative contracts	Concept (Monetary)	For Period	Debit	ltm:OtherInflowsOutflowsOfCashFromSettlementOfDerivativeContractsFinancingActivities
2702	Total Other inflows (outflows) Financing flow	Concept (Monetary)	For Period	Debit	ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities
2703	00000217 - Disclosure - STATEMENT OF CASH FLOWS (Details 1)	Network	*	*	http://latamairlinesgroup.net/role/StatementOfCashFlowsDetails1
2704	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
2705	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2706	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
2707	Latam Airlines Group S.A. [Member]	Member			ltm:LatamAirlinesGroupS.A.Member
2708	Multiplus S.A. [Member]	Member			ltm:MultiplusSAMember
2709	Lan Peru S.A. [Member]	Member			ltm:LanPeruSAMember
2710	Disclosure of subsidiaries [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
2711	Total dividends paid	Concept (Monetary)	For Period	Credit	ifrs-full:DividendsPaidClassifiedAsFinancingActivities
2712	00000218 - Disclosure - STATEMENT OF CASH FLOWS (Details 2)	Network	*	*	http://latamairlinesgroup.net/role/StatementOfCashFlowsDetails2
2713	Disclosure of financial liabilities [table]	Table	*	*	ifrs-full:DisclosureOfFinancialLiabilitiesTable
2714	Categories of financial liabilities [axis]	Axis			ifrs-full:CategoriesOfFinancialLiabilitiesAxis
2715	Financial liabilities, category [member]	Member			ifrs-full:FinancialLiabilitiesCategoryMember
2716	Loans To Exporters [Member]	Member			ltm:LoansToExportersMember
2717	Bank Loans [Member]	Member			ltm:BankLoansMember
2718	Guaranteed Obligations [Member]	Member			ltm:GuaranteedObligationsMember
2719	Other Guaranteed Obligations [Member]	Member			ltm:OtherGuaranteedObligationsMember
2720	Obligation With The Public [Member]	Member			ltm:ObligationWithThePublicMember
2721	Financial Leases [Member]	Member			ltm:FinancialLeasesMember
2722	Other Loans [Member]	Member			ltm:OtherLoansMember
2723	Disclosure of financial liabilities [line items]	LineItems			ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
2724	Reconciliation of liabilities arising from financing activities [Roll Forward]	Abstract			ltm:ReconciliationOfLiabilitiesArisingFromFinancingActivitiesAbstract
2725	Beginning balance	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
2726	Cash flows	Abstract			ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
2727	Obtainment Capital	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
2728	Payment Capital	Concept (Monetary)	For Period	Credit	ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
2729	Payment Interest	Concept (Monetary)	For Period	Credit	ltm:RepaymentsOfBorrowingsInterestClassifiedAsFinancingActivities
2730	Non-Flow Movements	Abstract			ltm:CashNonFlowsFromUsedInFinancingActivitiesAbstract
2731	Interest accrued and others	Concept (Monetary)	For Period	Debit	ltm:NonCashFlowInterestAccruedAndOthers
2732	Reclassifications	Concept (Monetary)	For Period	Debit	ltm:NonCashFlowReclassifications
2733	Ending balance	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
2734	00000219 - Disclosure - STATEMENT OF CASH FLOWS (Details 3)	Network	*	*	http://latamairlinesgroup.net/role/StatementOfCashFlowsDetails3
2735	Implied Table	Table	*	*	implied:Table
2736	Statement Of Cash Flows	Abstract			ltm:DisclosureOfCashFlowStatementAbstract
2737	Increases (payments)	Concept (Monetary)	For Period	Debit	ltm:IncreasesPaymentsCashFlowsAssociatedWithAircraftPurchases
2738	Recoveries	Concept (Monetary)	For Period	Debit	ltm:RecoveriesCashFlowsAssociatedWithAircraftPurchases
2739	Total cash flows	Concept (Monetary)	For Period	Debit	ltm:TotalCashFlowsCashFlowsAssociatedWithAircraftPurchases
2740	00000220 - Disclosure - STATEMENT OF CASH FLOWS (Details 4)	Network	*	*	http://latamairlinesgroup.net/role/StatementOfCashFlowsDetails4
2741	Statement of changes in equity [table]	Table	*	*	ifrs-full:StatementOfChangesInEquityTable
2742	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
2743	Equity [member]	Member			ifrs-full:EquityMember
2744	Hyperinflation Application [Member]	Member			ltm:HyperinflationApplicationMember
2745	Statement of changes in equity [line items]	LineItems			ifrs-full:StatementOfChangesInEquityLineItems
2746	Net cash flows from (used in) operating activities	Concept (Monetary)	For Period		ifrs-full:CashFlowsFromUsedInOperatingActivities
2747	Net cash flows from (used in) investment activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInInvestingActivities
2748	Net cash flows from (used in) financing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInFinancingActivities
2749	Effects of variation in the exchange rate on cash and cash equivalents	Concept (Monetary)	For Period	Debit	ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
2750	Net increase (decrease) in cash and cash equivalents	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
2751	00000221 - Disclosure - EVENTS SUBSEQUENT TO THE DATE OF THE FINANCIAL STATEMENTS (Details Narrative)	Network	*	*	http://latamairlinesgroup.net/role/EventsSubsequentToDateOfFinancialStatementsDetailsNarrative
2752	Disclosure of non-adjusting events after reporting period [table]	Table	*	*	ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodTable
2753	Non-adjusting events after reporting period [axis]	Axis			ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
2754	Non-adjusting events after reporting period [member]	Member			ifrs-full:NonadjustingEventsMember
2755	Non-adjusting events after reporting period [Member]	Member			ltm:NonadjustingEvents1Member
2756	Borrowings by name [axis]	Axis			ifrs-full:BorrowingsByNameAxis
2757	Borrowings by name [member]	Member			ifrs-full:BorrowingsByNameMember
2758	Long Term Unsecured Bonds [Member]	Member			ltm:LongTermUnsecuredBondsMember
2759	Categories Of Related Parties [Axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
2760	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
2761	Holdco I S.A [Member]	Member			ifrs-full:RelatedPartiesMember
2762	Range [axis]	Axis			ifrs-full:RangeAxis
2763	Ranges [member]	Member			ifrs-full:RangesMember
2764	Bottom of range [Member]	Member			ifrs-full:BottomOfRangeMember
2765	Top of range [Member]	Member			ifrs-full:TopOfRangeMember
2766	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2767	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
2768	Multiplus S.A. [Member]	Member			ltm:MultiplusSAMember
2769	Multiplus S.A. [Member]	Member			ltm:MultiplusSA1Member
2770	Elliot's [Member]	Member			ltm:ElliotsMember
2771	Multiplus S.A. [Member]	Member			ltm:MultiplusSA2Member
2772	Avianca Brasil [Member]	Member			ltm:AviancaBrasilMember
2773	Disclosure of non-adjusting events after reporting period [line items]	LineItems			ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
2774	Face amount	Concept (Monetary)	As Of		ifrs-full:NotionalAmount
2775	Annual interest rate	Concept (Percent)	As Of		ifrs-full:BorrowingsInterestRate
2776	Offer price, bonds	Concept (Percent)	As Of		ifrs-full:AverageRateOfHedgingInstrument
2777	Description of borrowing maturity	Concept (Text/String)	For Period		ifrs-full:BorrowingsMaturity
2778	Description of operation's total amount	Concept (Text/String)	For Period		ltm:DescriptionOgOperationsTotalAmount
2779	Percentage of indirect participation	Concept (Pure)	For Period		ltm:PercentageOfIndirectParticipation1
2780	Percentage of equity ownership	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInSubsidiary
2781	Cumulative percentage ownership	Concept (Percent)	For Period		ltm:CumulativePercentageOwnershipAfterAllTransactions
2782	Investment in shares	Concept (Monetary)	As Of	Debit	ifrs-full:InvestmentAccountedForUsingEquityMethod
2783	Restructuring costs	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseOfRestructuringActivities
2784	Debtor in possession loans	Concept (Monetary)	As Of	Debit	ifrs-full:AssetsObtained