ERICSSON LM TELEPHONE CO (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 1001 - Document - Document and Entity Information Network

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2 Document Information [Table] Table

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3 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
4 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
5 Class B [member] Member eric:ClassBMember
6 Class A [member] Member eric:ClassAMember
7 Class C [member] Member eric:ClassMember
8 Document Information [Line Items] LineItems dei:DocumentInformationLineItems
9 Document Type Concept (Submission Type) For Period dei:DocumentType
10 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
11 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
12 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
13 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
14 Trading Symbol Concept (Text/String) For Period dei:TradingSymbol
15 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
16 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
17 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
18 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
19 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
20 Entity Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
21 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
22 Entity Shell Company Concept (Yes/No) For Period dei:EntityShellCompany
23 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
24 1003 - Statement - Consolidated income statement Network

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25 Implied Table Table

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26 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
27 Net sales Concept (Monetary) For Period Credit ifrs-full:Revenue
28 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
29 Gross income Concept (Monetary) For Period Credit ifrs-full:GrossProfit
30 Gross margin (%) Concept (Percent) For Period eric:PercentageOfGrossMargin
31 Research and development expenses Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
32 Selling and administrative expenses Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
33 Impairment losses on trade receivables Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLossTradeReceivables
34 Operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
35 Other operating income Concept (Monetary) For Period Credit ifrs-full:MiscellaneousOtherOperatingIncome
36 Other operating expense Concept (Monetary) For Period Debit ifrs-full:MiscellaneousOtherOperatingExpense
37 Share in earnings of joint ventures and associated companies Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
38 Operating income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
39 Financial income Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeCost
40 Financial expenses Concept (Monetary) For Period Debit eric:FinanceCostsIncome
41 Income after financial items (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
42 Taxes Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
43 Net income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
44 Net income (loss) attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
45 Stockholders of the Parent Company Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
46 Non-controlling interest Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
47 Other information Abstract ifrs-full:EarningsPerShareAbstract
48 Average number of shares, basic (million) Concept (Shares) For Period ifrs-full:WeightedAverageShares
49 Earnings (loss) per share attributable to stockholders of the Parent Company, basic (SEK) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
50 Earnings (loss) per share attributable to stockholders of the Parent Company, diluted (SEK) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
51 1004 - Statement - Consolidated statement of comprehensive income (loss) Network

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52 Implied Table Table

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53 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
54 Net income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
55 Items that will not be reclassified to profit or loss Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
56 Remeasurements of defined benefits pension plans including asset ceiling Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
57 Revaluation of borrowings due to change in credit risk Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxChangeInFairValueOfFinancialLiabilityAttributableToChangeInCreditRiskOfLiability
58 Tax on items that will not be reclassified to profit or loss Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss
59 Items that may be reclassified to profit or loss Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
60 Available-for-sale financial assets Abstract ifrs-full:AvailableforsaleFinancialAssetsAbstract
61 Gains/losses arising during the period Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax
62 Reclassification adjustments on gains/losses included in profit or loss Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsBeforeTax
63 Revaluation of other investments in shares and participations Abstract ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeAbstract
64 Fair value remeasurement Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
65 Changes in cumulative translation adjustments Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation
66 Share of other comprehensive income of joint ventures and associated companies Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
67 Tax on items that may be reclassified to profit or loss Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss
68 Total other comprehensive income (loss), net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
69 Total comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
70 Total comprehensive income (loss) attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
71 Stockholders of the Parent Company Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
72 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
73 1005 - Statement - Consolidated balance sheet Network

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74 Implied Table Table

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75 Non Current Assets Finance Liabilities [abstract] Abstract eric:NonCurrentAssetsFinanceLiabilitiesAbstract
76 ASSETS Abstract ifrs-full:AssetsAbstract
77 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
78 Capitalized development expenses Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsUnderDevelopment
79 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
80 Intellectual property rights, brands and other intangible assets Concept (Monetary) As Of Debit ifrs-full:CopyrightsPatentsAndOtherIndustrialPropertyRightsServiceAndOperatingRights
81 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
82 Financial assets Abstract ifrs-full:CategoriesOfNoncurrentFinancialAssetsAbstract
83 Equity in joint ventures and associated companies Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
84 Other investments in shares and participations Concept (Monetary) As Of Debit ifrs-full:NoncurrentInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod
85 Customer finance, non-current Concept (Monetary) As Of Debit eric:CustomerFinanceNoncurrent
86 Interest-bearing securities, non-current Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsAvailableforsale
87 Other financial assets, non-current Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentFinancialAssets
88 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
89 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
90 Current assets Abstract ifrs-full:CurrentAssetsAbstract
91 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
92 Contract assets Concept (Monetary) As Of Debit ifrs-full:ContractAssets
93 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
94 Customer finance, current Concept (Monetary) As Of Debit eric:CustomerFinanceCurrent
95 Other current receivables Concept (Monetary) As Of Debit ifrs-full:OtherCurrentReceivables
96 Interest-bearing securities, current Concept (Monetary) As Of Debit ifrs-full:CurrentFinancialAssetsAvailableforsale
97 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
98 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
99 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
100 EQUITY AND LIABILITIES Abstract ifrs-full:EquityAndLiabilitiesAbstract
101 Equity Abstract ifrs-full:EquityAbstract
102 Stockholders' equity Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
103 Non-controlling interest in equity of subsidiaries Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
104 Equity Concept (Monetary) As Of Credit ifrs-full:Equity
105 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
106 Post-employment benefits Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
107 Provisions, non-current Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisions
108 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
109 Borrowings, non-current Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
110 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
111 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
112 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
113 Provisions, current Concept (Monetary) As Of Credit ifrs-full:CurrentProvisions
114 Borrowings, current Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
115 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
116 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
117 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
118 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
119 Total equity and liabilities Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
120 1006 - Statement - Consolidated balance sheet (Parenthetical) Network

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121 Implied Table Table

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122 Non Current Assets Finance Liabilities [abstract] Abstract eric:NonCurrentAssetsFinanceLiabilitiesAbstract
123 Interest-bearing liabilities Concept (Monetary) As Of Credit eric:InterestBearingLiabilities
124 1007 - Statement - Consolidated statement of cash flows Network

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125 Implied Table Table

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126 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
127 Operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
128 Net income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
129 Adjustments to reconcile net income to cash Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForReconcileProfitLoss
130 Cash flows from (used in) Operations Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
131 Changes in operating net assets Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
132 Inventories Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
133 Customer finance, current and non-current Concept (Monetary) For Period Debit eric:AdjustmentsForDecreaseIncreaseInCustomerFinanceCurrentAndNonCurrent
134 Trade receivables and contract assets Concept (Monetary) For Period Debit eric:AdjustmentsForIncreaseDecreaseInTradeReceivableAndContractAssets
135 Trade payables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
136 Provisions and post-employment benefits Concept (Monetary) For Period Debit eric:AdjustmentForIncreaseDecreaseInProvisionsAndPostemploymentBenefits
137 Contract liabilities Concept (Monetary) For Period Debit eric:AdjustmentsForIncreaseDecreaseInContractLiabilities
138 Other operating assets and liabilities, net Concept (Monetary) For Period Debit eric:AdjustmentsForDecreaseIncreaseInOtherOperatingAssetsAndLiabilitiesNet
139 Net changes in operating assets and liabilities Concept (Monetary) For Period Debit eric:ChangesInOperatingNetAssets
140 Cash flow from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
141 Investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
142 Investments in property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
143 Sales of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
144 Acquisitions of subsidiaries and other operations Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
145 Divestments of subsidiaries and other operations Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
146 Product development Concept (Monetary) For Period Credit ifrs-full:PaymentsForDevelopmentProjectExpenditure
147 Other investing activities Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities
148 Interest-bearing securities Concept (Monetary) For Period Credit ifrs-full:PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities
149 Cash flow from investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
150 Cash flow before financing activities Concept (Monetary) For Period Debit eric:CashFlowBeforeFinancingActivities
151 Financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
152 Proceeds from issuance of borrowings Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
153 Repayment of borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
154 Proceeds from stock issue Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
155 Sale of own shares Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSaleOrIssueOfTreasuryShares
156 Repurchase of own shares Concept (Monetary) For Period Credit eric:RepurchaseOfOwnShares
157 Dividends paid Concept (Monetary) For Period Credit ifrs-full:DividendsPaidClassifiedAsFinancingActivities
158 Other financing activities Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities
159 Cash flow from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
160 Effect of exchange rate changes on cash Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
161 Net change in cash Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
162 Cash and cash equivalents, beginning of period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
163 Cash and cash equivalents, end of period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
164 1008 - Statement - Consolidated statement of changes in equity Network

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165 Statement of changes in equity [table] Table

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166 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
167 Equity [member] Member ifrs-full:EquityMember
168 Capital stock [member] Member ifrs-full:IssuedCapitalMember
169 Additional paid in capital [member] Member ifrs-full:AdditionalPaidinCapitalMember
170 Retained earnings [member] Member ifrs-full:RetainedEarningsMember
171 Stockholder's equity [member] Member ifrs-full:EquityAttributableToOwnersOfParentMember
172 Non-controlling interest [member] Member ifrs-full:NoncontrollingInterestsMember
173 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
174 Currently stated [member] Member ifrs-full:RestatedMember
175 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
176 Increase (decrease) due to application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
177 Adjusted Balance [member] Member eric:AdjustedBalanceMember
178 Application of IFRS9 [member] Member eric:ApplicationOfIFRS9Member
179 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
180 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
181 Group [member] Member eric:GroupMember
182 Joint ventures and associated companies [member] Member eric:JointVenturesAndAssociatedCompaniesMember
183 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
184 Changes in cumulative translation adjustments Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationBeforeTax
185 Items that will not be reclassified to profit or loss Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
186 Remeasurements related to post-employment benefits Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
187 Revaluation of borrowings due to change in credit risk Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxChangeInFairValueOfFinancialLiabilityAttributableToChangeInCreditRiskOfLiability
188 Tax on items that will not be reclassified to profit or loss Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss
189 Opening balance adjustment due to IFRS 15 Concept (Monetary) For Period Debit eric:EffectOfChangeInAccountingPolicy
190 Beginning balance Concept (Monetary) As Of Credit ifrs-full:Equity
191 Items that may be reclassified to profit or loss Abstract ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossAbstract
192 Items that may be reclassified to profit or loss Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
193 Available-for-sale interest-bearing securities Abstract ifrs-full:AvailableforsaleFinancialAssetsAbstract
194 Gains (+)/Losses (-) arising during the period Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax
195 Reclassification adjustments relating to available-for-sale financial assets disposed of in the year Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnAvailableforsaleFinancialAssetsBeforeTax
196 Revaluation of other investments in shares and participations Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax
197 Net income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
198 Tax on items that may be reclassified to profit or loss Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss
199 Total other comprehensive income (loss), net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
200 Total comprehensive income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
201 Transactions with owners Abstract ifrs-full:ChangesInEquityAbstract
202 Stock issue Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
203 Sale of own shares Concept (Monetary) For Period Credit ifrs-full:SaleOrIssueOfTreasuryShares
204 Repurchase of own shares Concept (Monetary) For Period Debit ifrs-full:PurchaseOfTreasuryShares
205 Long-term variable compensation plans Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
206 Dividends paid Concept (Monetary) For Period Debit ifrs-full:DividendsPaid
207 Transactions with non-controlling interest Concept (Monetary) For Period Credit eric:IncreaseDecreaseThroughTransactionsWithNoncontrollingInterests
208 Ending balance Concept (Monetary) As Of Credit ifrs-full:Equity
209 1009 - Statement - Consolidated statement of changes in equity (Parenthetical) Network

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210 Implied Table Table

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211 Disclosure Of Restatement [abstract] Abstract eric:DisclosureOfRestatementAbstract
212 Increase (decrease) through net exchange differences, goodwill Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesGoodwill
213 Realized gain or losses net Concept (Monetary) For Period Credit eric:RealizedGainLoss
214 Dividends paid per share Concept (Share) For Period ifrs-full:DividendsPaidOrdinarySharesPerShare
215 1010 - Disclosure - A1 Significant accounting policies Network

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219 1011 - Disclosure - A2 Critical accounting estimates and judgments Network

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223 1012 - Disclosure - A3 Changes in accounting policies Network

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227 1013 - Disclosure - B1 Segment information Network

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231 1014 - Disclosure - B2 Net sales Network

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235 1015 - Disclosure - B3 Expenses by nature Network

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251 1019 - Disclosure - B7 Other current receivables Network

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255 1020 - Disclosure - B8 Trade payables Network

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259 1021 - Disclosure - B9 Other current liabilities Network

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263 1022 - Disclosure - C1 Intangible assets Network

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267 1023 - Disclosure - C2 Property, plant and equipment Network

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339 1041 - Disclosure - H2 Earnings per share Network

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364 Foreign currency remeasurement and translation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
365 Group companies Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSubsidiariesExplanatory
366 Revenue recognition Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
367 Standard products and services Concept (Text Block (HTML)) For Period eric:DescriptionOfAccountingPolicyForStandardProductsAndServicesExplanatory
368 Customized solution Concept (Text Block (HTML)) For Period eric:DescriptionOfAccountingPolicyForCustomizedSolutionExplanatory
369 Intellectual Property Rights (IPR) Concept (Text Block (HTML)) For Period eric:DescriptionOfAccountingPolicyForAcquiredIntellectualPropertyAndOtherIntangibleAssetsExplanatory
370 Customer contract related balances Concept (Text Block (HTML)) For Period eric:DescriptionOfAccountingPolicyForCustomerContractRelatedBalancesexplanatory
371 Segment reporting Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSegmentReportingExplanatory
372 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
373 Trade payables Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory
374 Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForGoodwillExplanatory
375 Intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory
376 Property, plant, and equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
377 Leasing Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
378 Provisions and contingent liabilities Concept (Text Block (HTML)) For Period eric:DescriptionOfAccountingPolicyForProvisionsAndContingentLiabilitiesExplanatory
379 Business combinations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory
380 Non-controlling interest Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTransactionsWithNoncontrollingInterestsExplanatory
381 Joint ventures and associated companies Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory
382 Financial assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialAssetsExplanatory
383 Financial liabilities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory
384 Financial guarantees Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialGuaranteesExplanatory
385 Accounting policies applied prior to 2018 Concept (Text Block (HTML)) For Period eric:DescriptionOfAccountingPolicyAppliedPriorYearExplanatory
386 Post-employment benefits Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
387 Share-based compensation to employees and the Board of Directors Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
388 Income taxes Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
389 Earnings per share Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
390 Statement of cash flows Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForCashFlowsExplanatory
391 New accounting standards and interpretations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
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402 Summary of Estimated Impact of IFRS 15 on Income Statement Items Concept (Text Block (HTML)) For Period eric:DisclosureOfEstimatedImpactOfIFRS15OnIncomeStatementItemsExplanatory
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408 1050 - Disclosure - B2 Net sales (Tables) Network

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416 Summary of Restructuring Charges by Function Concept (Text Block (HTML)) For Period eric:DisclosureOfRestructuringCostsExplanatory
417 1052 - Disclosure - B4 Other operating income and expenses (Tables) Network

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421 1053 - Disclosure - B5 Inventories (Tables) Network

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425 Movements in Obsolescence Allowances Concept (Text Block (HTML)) For Period eric:DisclosureOfMovementsInObsolescenceAllowancesOfInventoriesExplanatory
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430 Summary of Significant Movements in Contract Assets and Liabilities Concept (Text Block (HTML)) For Period ifrs-full:ExplanationOfSignificantChangesInContractAssetsAndContractLiabilitiesExplanatory
431 1055 - Disclosure - B7 Other current receivables (Tables) Network

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455 Summary of Future Minimum Lease Payment Obligations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeExplanatory
456 1061 - Disclosure - D1 Provisions (Tables) Network

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468 1064 - Disclosure - D4 Contractual obligations (Tables) Network

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477 1066 - Disclosure - E2 Business combinations (Tables) Network

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483 Summary of Business Divestments Transactions Concept (Text Block (HTML)) For Period eric:DisclosureOfDetailedInformationAboutDisposalsExplanatory
484 1067 - Disclosure - E3 Associated companies (Tables) Network

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493 Summary of Sensitivity to Interest Rate Increase of One Basis Point Concept (Text Block (HTML)) For Period eric:DisclosureOfInterestRateSensitivityExplanatory
494 Disclosure of Detailed Information about Currency Derivatives Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutFinancialInstrumentsExplanatory
495 Summary of Movements in Allowances for Impairment of Trade Receivables and Contract Assets Concept (Text Block (HTML)) For Period eric:DisclosureOfChangesInAllowanceForImpairmentOfTradeAndOtherReceivablesExplanatory
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497 Summary of Movements in Allowances for Impairment of Trade Receivables and Contract Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory
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501 Summary of Movements in Allowances for Impairment of Customer Finance Concept (Text Block (HTML)) For Period eric:DisclosureOfMovementsInAllowancesForImpairmentOfCustomerFinanceExplanatory
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503 Summary of Cash, Cash Equivalents and Interest-Bearing Securities Concept (Text Block (HTML)) For Period eric:DisclosureOfCashAndCashEquivalentsAndInterestBearingSecuritiesExplanatory
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505 Summary of Committed Credit Facilities Concept (Text Block (HTML)) For Period eric:DisclosureOfCommittedCreditFacilitiesExplanatory
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507 1069 - Disclosure - F2 Financial income and expenses (Tables) Network

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511 1070 - Disclosure - F3 Financial assets, non-current (Tables) Network

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513 Text block [abstract] Abstract eric:TextBlockAbstract
514 Summary of Financial Assets, Non-current Concept (Text Block (HTML)) For Period eric:DisclosureOfDetailedInformationAboutFinancialAssetsExplanatory
515 1071 - Disclosure - F4 Interest-bearing liabilities (Tables) Network

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516 Implied Table Table

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517 Text block [abstract] Abstract eric:TextBlockAbstract
518 Summary of Interest-Bearing Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBorrowingsExplanatory
519 Reconciliation of Liabilities Arising from Financing Activities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatory
520 Summary of Notes, Bonds, Bilateral Loans and Committed Credit Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
521 1072 - Disclosure - G1 Post-employment benefits (Tables) Network

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522 Implied Table Table

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523 Text block [abstract] Abstract eric:TextBlockAbstract
524 Summary of Amount Recognized in the Consolidated Balance Sheet Concept (Text Block (HTML)) For Period eric:DisclosureOfBalanceSheetPresentationOfDefinedBenefitPensionAndPostRetirementExplanatory
525 Summary of Pension Costs for Defined Contribution Plans and Defined Benefit Plans Concept (Text Block (HTML)) For Period eric:DisclosureOfDefinedBenefitPlansExpenseRecognizedInIncomeStatementExplanatory
526 Summary of Change in the Net Defined Benefit Obligation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
527 Summary of Present Value of the Defined Benefit Obligation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAnalysisOfPresentValueOfDefinedBenefitObligationThatDistinguishesNatureCharacteristicsAndRisksExplanatory
528 Summary of Asset Allocation by Asset Type and Geography Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfPlanAssetsExplanatory
529 Summary of Financial and Demographic Actuarial Assumptions Concept (Text Block (HTML)) For Period eric:DisclosureOfFinancialAndDemographicActuarialAssumptionsExplanatory
530 Summary of Total Remeasurements in Other Comprehensive Income (Loss) Related to Post-Employment Benefits Concept (Text Block (HTML)) For Period eric:DisclosureOfRemeasurementOfOtherComprehensiveIncomeLossRelatedToPostemploymentBenefitsExplanatory
531 Summary of Sensitivity Analysis of Significant Actuarial Assumptions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
532 1073 - Disclosure - G2 Information regarding members of the Board of Directors and Group management (Tables) Network

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533 Implied Table Table

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534 Text block [abstract] Abstract eric:TextBlockAbstract
535 Summary of Remuneration to Members of the Board of Directors Concept (Text Block (HTML)) For Period eric:DisclosureOfMembersOfBoardOfDirectorsRemunerationExplanatory
536 Summary of Remuneration Costs for the President and CEO and Other Members of Executive Leadership Team (ELT) Concept (Text Block (HTML)) For Period eric:DisclosureOfRemunerationCostsForPresidentAndCEOAndOtherMembersOfExecutiveLeadershipTeamExplanatory
537 1074 - Disclosure - G3 Share-based compensation (Tables) Network

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538 Implied Table Table

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539 Text block [abstract] Abstract eric:TextBlockAbstract
540 Summary of Maximum Outstanding Matching Rights Concept (Text Block (HTML)) For Period eric:DisclosureOfMaximumOutstandingRightsExplanatory
541 Summary of Performance Criteria Concept (Text Block (HTML)) For Period eric:DisclosureOfPerformanceTargetsExplanatory
542 Summary of LTV Share-Settled Plan Concept (Text Block (HTML)) For Period eric:LongTermVariableCompensationProgramsExplanatory
543 Summary of Compensation Cost Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory
544 Summary of Stock Purchase Plans Concept (Text Block (HTML)) For Period eric:DisclosureOfDetailedInformationAboutStockPurchasePlanExplanatory
545 Summary of Executive Performance Stock Plan Targets Concept (Text Block (HTML)) For Period eric:DisclosureOfExecutivePerformanceStockPlanTargetsExplanatory
546 Summary of Shares for All Plans Concept (Text Block (HTML)) For Period eric:DisclosureOfShareBasedCompensationPlanExplanatory
547 1075 - Disclosure - G4 Employee information (Tables) Network

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548 Implied Table Table

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549 Text block [abstract] Abstract eric:TextBlockAbstract
550 Summary of Average Number of Employees Concept (Text Block (HTML)) For Period eric:DisclosureOfAverageNumberOfEmployeesExplanatory
551 Summary of Number of Employees by Market Area Concept (Text Block (HTML)) For Period eric:DisclosureOfNumberOfEmployeesExplanatory
552 Summary of Number of Employees by Gender and Age Concept (Text Block (HTML)) For Period eric:DisclosureOfNumberOfEmployeesByGenderAndAgeExplanatory
553 Summary of Employee Movements Concept (Text Block (HTML)) For Period eric:DisclosureOfEmployeeMovementsExplanatory
554 Summary of Wages and Salaries and Social Security Expenses Concept (Text Block (HTML)) For Period eric:DisclosureOfWagesAndSalariesAndSocialSecurityExpensesExplanatory
555 Summary of Remuneration to Board Members and Presidents in Subsidiaries Concept (Text Block (HTML)) For Period eric:DisclosureOfRemunerationToBoardMembersAndPresidentsInSubsidiariesExplanatory
556 Summary of Board Members, Presidents and Group Management by Gender Concept (Text Block (HTML)) For Period eric:DisclosureOfBoardMembersPresidentsAndGroupManagementByGenderExplanatory
557 1076 - Disclosure - H1 Taxes (Tables) Network

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558 Implied Table Table

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559 Text block [abstract] Abstract eric:TextBlockAbstract
560 Components of Income Taxes Recognized in Income Statement Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTaxReceivablesAndPayablesExplanatory
561 Reconciliation of Swedish Income Tax Rate with Effective Tax Rate Concept (Text Block (HTML)) For Period eric:DisclosureOfReconciliationOfEffectiveTaxRateExplanatory
562 Tax Effects of Temporary Differences and Tax Loss Carry-forwards Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
563 Changes in Deferred Taxes, Net Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDeferredTaxesExplanatory
564 Tax Loss Carry-forwards Concept (Text Block (HTML)) For Period eric:DisclosureOfTaxLossCarryforwardsExplanatory
565 1077 - Disclosure - H2 Earnings per share (Tables) Network

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566 Implied Table Table

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567 Text block [abstract] Abstract eric:TextBlockAbstract
568 Schedule of Earnings Per Share Concept (Text Block (HTML)) For Period ifrs-full:EarningsPerShareExplanatory
569 1078 - Disclosure - H3 Statement of cash flows (Tables) Network

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570 Implied Table Table

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571 Text block [abstract] Abstract eric:TextBlockAbstract
572 Summary of Adjustments to Reconcile Net Income to Cash Concept (Text Block (HTML)) For Period eric:DisclosureOfAdjustmentsToReconcileNetIncomeToCashExplanatory
573 Summary of Acquisitions/Divestments of Subsidiaries and Other Operations Concept (Text Block (HTML)) For Period eric:DisclosureOfAcquisitionsAndDivestmentsExplanatory
574 1079 - Disclosure - H5 Fees to auditors (Tables) Network

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575 Implied Table Table

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576 Text block [abstract] Abstract eric:TextBlockAbstract
577 Summary of Fees to Auditors Concept (Text Block (HTML)) For Period eric:DisclosureOfDetailedInformationAboutAuditorsRemunerationExplanatory
578 1080 - Disclosure - Significant Accounting Policies - Additional Information (Detail) Network

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579 Summary Of Significant Accounting Policies [table] Table

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580 Range [axis] Axis ifrs-full:RangeAxis
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582 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
583 Top of range [member] Member ifrs-full:TopOfRangeMember
584 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
585 Products and services [member] Member ifrs-full:ProductsAndServicesMember
586 Customized solution [member] Member eric:CustomizedSolutionMember
587 Intellectual Property Rights [member] Member eric:IntellectualPropertyRightsMember
588 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
589 Non-Adjusting Events after Reporting Period [Member] Member ifrs-full:NonadjustingEventsMember
590 Transition to IFRS Sixteen [member] Member eric:TransitionToIfrsSixteenMember
591 Summary Of Significant Accounting Policies [Line items] LineItems eric:SummaryOfSignificantAccountingPoliciesLineItems
592 Payments terms Concept (Text/String) For Period eric:PaymentPeriodTerm
593 Customer finance agreements, description Concept (Text/String) For Period eric:CustomerFinanceAgreements
594 Estimated useful lives in general for real estate Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesInvestmentPropertyCostModel
595 Estimated useful lives for machinery and equipment Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
596 Potential voting rights Concept (Percent) For Period ifrs-full:ProportionOfVotingPowerHeldInAssociate
597 Weighted average incremental borrowing rate applied to lease liabilities Concept (Percent) As Of ifrs-full:WeightedAverageLesseesIncrementalBorrowingRateAppliedToLeaseLiabilitiesRecognisedAtDateOfInitialApplicationOfIFRS16
598 Contract asset Concept (Monetary) As Of Debit ifrs-full:ContractAssets
599 Amortization of lease liabilities Concept (Monetary) For Period Credit eric:AmortizationOfFinanceLeaseLiabilitiesClassifiedAsFinancingActivities
600 Minimum lease payments for operating lease contracts Concept (Monetary) For Period Debit ifrs-full:MinimumOperatingLeasePayments
601 Operating lease discount Concept (Monetary) For Period Debit eric:OperatingLeaseDiscount
602 Low value lease agreement Concept (Monetary) For Period Debit eric:LowValueLeaseAgreement
603 Net of operating lease advance payments and operating lease term extensions Concept (Monetary) For Period Debit eric:NetOfOperatingLeaseAdvancePaymentsAndOperatingLeaseTermExtensions
604 Estimated lease liabilities Concept (Monetary) For Period Debit eric:EstimatedLeaseLiabilities
605 Onerous contracts Concept (Monetary) As Of Credit ifrs-full:OnerousContractsProvision
606 Periodization of lease costs Concept (Monetary) For Period Debit eric:PeriodizationOfLeaseCosts
607 Advance lease payments Concept (Monetary) As Of Debit eric:AdvanceOperatingLeasePayments
608 Right-of-use assets Concept (Monetary) As Of Debit ifrs-full:RightofuseAssets
609 Percentage of increase in total asset value Concept (Percent) For Period eric:PercentageOfIncreaseInTotalAssetValue
610 1081 - Disclosure - Significant Accounting Policies - Summary of Estimated Impact of IFRS 16 on Balance Sheet Items (Detail) Network

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611 Disclosure of initial application of standards or interpretations [table] Table

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612 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
613 Non-Adjusting Events after Reporting Period [Member] Member ifrs-full:NonadjustingEventsMember
614 Transition to IFRS Sixteen [member] Member eric:TransitionToIfrsSixteenMember
615 Disclosure of initial application of standards or interpretations [line items] LineItems ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
616 Right-of-use assets Concept (Monetary) As Of Debit ifrs-full:RightofuseAssets
617 Lease liabilities, current Concept (Monetary) As Of Credit ifrs-full:CurrentLeaseLiabilities
618 Lease liabilities, non-current Concept (Monetary) As Of Credit ifrs-full:NoncurrentLeaseLiabilities
619 Equity Concept (Monetary) As Of Credit ifrs-full:Equity
620 1082 - Disclosure - Critical Accounting Estimates and Judgments - Additional Information (Detail) Network

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621 Disclosure of accounting judgements and estimates [table] Table

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622 Classes of intangible assets other than goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
623 Intangible assets other than goodwill [member] Member ifrs-full:IntangibleAssetsOtherThanGoodwillMember
624 Intellectual property rights brands and other intangible assets [member] Member eric:IntellectualPropertyRightsBrandsAndOtherIntangibleAssetsMember
625 Disclosure of accounting judgements and estimates [line items] LineItems eric:DisclosureOfAccountingJudgementsAndEstimatesLineItems
626 Allowances for estimated losses on trade and customer receivables Concept (Monetary) As Of Credit eric:AllowancesForEstimatedLossesOnTradeAndCustomerReceivables
627 Percentage of allowances for estimated losses on gross trade and customer finance receivables Concept (Percent) As Of eric:AllowancesForEstimatedLossesOnGrossTradeAndCustomerFinanceReceivablesPercentage
628 Allowances for estimated losses on inventory valuation Concept (Monetary) As Of Credit eric:AllowancesForEstimatedLossesOnInventoryValuation
629 Allowances for estimated losses on inventory valuation, percentage Concept (Percent) As Of eric:AllowancesForEstimatedLossesOnInventoryValuationPercentage
630 Write-downs for intangible assets and goodwill Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsAndGoodwill
631 Intangible assets and goodwill Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
632 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
633 Provisions Concept (Monetary) As Of Credit ifrs-full:Provisions
634 Defined benefit obligation (DBO) Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
635 Fair value of plan assets Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
636 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
637 1083 - Disclosure - Changes In Accounting Policies - Summary of Impact on Implementation of IFRS 9 and IFRS 15 on Equity and Other Balance Sheet Items (Detail) Network

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638 Disclosure of initial application of standards or interpretations [table] Table

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639 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
640 Currently stated [member] Member ifrs-full:RestatedMember
641 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
642 Increase (decrease) due to application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
643 IFRS 9 adjustment [member] Member eric:IFRSNineAdjustmentMember
644 Disclosure of initial application of standards or interpretations [line items] LineItems ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
645 ASSETS Abstract ifrs-full:AssetsAbstract
646 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
647 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
648 Current assets Abstract ifrs-full:CurrentAssetsAbstract
649 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
650 Contract assets Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
651 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
652 EQUITY AND LIABILITIES Abstract ifrs-full:EquityAndLiabilitiesAbstract
653 Equity Abstract ifrs-full:EquityAbstract
654 Stockholder's equity Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
655 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
656 Borrowings, non-current Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
657 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
658 Provisions, current Concept (Monetary) As Of Credit ifrs-full:CurrentProvisions
659 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
660 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
661 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
662 1084 - Disclosure - Changes in Accounting Policies - Additional Information (Detail) Network

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663 Summary Of Significant Accounting Policies [table] Table

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664 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
665 Non-Adjusting Events after Reporting Period [Member] Member ifrs-full:NonadjustingEventsMember
666 Transition to IFRS 9 [member] Member eric:TransitionToIFRSNineMember
667 Transition to IFRS 15 [member] Member eric:TransitionToIfrsFifteenMember
668 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
669 Currently stated [member] Member ifrs-full:RestatedMember
670 Increase (decrease) due to application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
671 Increase (decrease) due to changes in accounting policy required by IFRSs [member] Member ifrs-full:IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember
672 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
673 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
674 Derecognition of assets [member] Member eric:DerecognitionOfAssetsMember
675 Derecognition of equity instruments [member] Member eric:DerecognitionOfEquityInstrumentsMember
676 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
677 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
678 Discount in contract [member] Member eric:DiscountInContractMember
679 Customized solution contract [member] Member eric:CustomizedSolutionContractMember
680 Transfer of control for equipment [member] Member eric:TransferOfControlForEquipmentMember
681 Summary Of Significant Accounting Policies [Line items] LineItems eric:SummaryOfSignificantAccountingPoliciesLineItems
682 Accumulated gains after tax Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
683 Increase in carrying value of borrowings Concept (Monetary) For Period Credit eric:IncreaseDecreaseInCarryingValueOfBorrowings
684 Increase (decrease) in allowance for impairment for trade receivables and contract assets Concept (Monetary) For Period Debit eric:IncreaseDecreaseInAllowanceForImpairmentForTradeReceivablesAndContractAssets
685 Net reduction to equity Concept (Monetary) For Period Debit eric:ReductionInEquity
686 Contract asset Concept (Monetary) As Of Debit ifrs-full:ContractAssets
687 Contract liability Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
688 Equity Concept (Monetary) As Of Credit ifrs-full:Equity
689 1085 - Disclosure - Changes in Accounting Policies - Summary of Reclassification of Financial Instruments (Detail) Network

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690 Reclassification of financial instruments [table] Table

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691 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
692 Currently stated [member] Member ifrs-full:RestatedMember
693 IFRS9 [member] Member eric:IFRS9Member
694 IAS 39 [member] Member eric:IAS39Member
695 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
696 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
697 Financial liabilities at designated fair value through profit or loss, category [member] Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
698 Instruments at amortized cost [member] Member ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
699 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
700 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
701 Instruments at fair value through profit or loss [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
702 Loans and receivables [member] Member ifrs-full:LoansAndReceivablesCategoryMember
703 Available for sale [member] Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
704 Reclassification of financial instruments [line items] LineItems eric:ReclassificationOfFinancialInstrumentsLineItems
705 Financial assets Abstract ifrs-full:CategoriesOfFinancialAssetsAbstract
706 Interest-bearing securities - managed on a fair value basis Concept (Monetary) As Of Debit eric:InterestBearingSecuritiesManagedOnFairValueBasis
707 Customer finance Concept (Monetary) As Of Debit eric:CustomerFinance
708 Trade receivables Concept (Monetary) As Of Debit ifrs-full:TradeReceivables
709 Interest-bearing securities - other Concept (Monetary) As Of Debit eric:InterestBearingSecuritiesClassifiedAsOther
710 Cash equivalents - other Concept (Monetary) As Of Debit eric:CashAndCashEquivalentsReclassifiedAsOther
711 Interest-bearing securities - held for trading Concept (Monetary) As Of Debit eric:InterestBearingSecuritiesHeldForTrading
712 Other investments in shares and participations Concept (Monetary) As Of Debit eric:OtherInvestmentsInSharesAndParticipations
713 Other financial investments 2) Concept (Monetary) As Of Debit ifrs-full:OtherFinancialAssets
714 Derivatives 3) Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
715 Cash equivalents - held for trading Concept (Monetary) For Period Credit eric:CashAndCashEquivalentsReclassifiedAsHeldForSale
716 Financial liabilities Abstract ifrs-full:CategoriesOfFinancialLiabilitiesAbstract
717 Borrowings - managed on a fair value basis Concept (Monetary) As Of Credit eric:BorrowingsAtFairValue
718 Borrowings - other Concept (Monetary) As Of Credit ifrs-full:OtherBorrowings
719 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayables
720 Derivatives 3) Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
721 1086 - Disclosure - Changes in Accounting Policies - Summary of Estimated Impact of IFRS 15 on Equity (Detail) Network

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722 Disclosure of expected impact of initial application of new standards or interpretations [table] Table

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723 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
724 Currently stated [member] Member ifrs-full:RestatedMember
725 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
726 Increase (decrease) due to changes in accounting policy required by IFRSs [member] Member ifrs-full:IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember
727 Disclosure of expected impact of initial application of new standards or interpretations [line items] LineItems ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsLineItems
728 Equity Concept (Monetary) As Of Credit ifrs-full:Equity
729 1087 - Disclosure - Changes in Accounting Policies - Summary of Estimated Impact of IFRS 15 on Income Statement Items (Detail) Network

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730 Disclosure of expected impact of initial application of new standards or interpretations [table] Table

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731 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
732 Currently stated [member] Member ifrs-full:RestatedMember
733 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
734 Increase (decrease) due to changes in accounting policy required by IFRSs [member] Member ifrs-full:IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember
735 Disclosure of expected impact of initial application of new standards or interpretations [line items] LineItems ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsLineItems
736 Net sales Concept (Monetary) For Period Credit ifrs-full:Revenue
737 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
738 Gross income Concept (Monetary) For Period Credit ifrs-full:GrossProfit
739 Operating income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
740 Taxes Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
741 Net income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
742 Earnings per share, basic (SEK) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
743 Earnings per share, diluted (SEK) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
744 1088 - Disclosure - Segment Information - Additional Information (Detail) Network

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745 Disclosure of operating segments [table] Table

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746 Segments [axis] Axis ifrs-full:SegmentsAxis
747 Segments [member] Member ifrs-full:SegmentsMember
748 Networks [member] Member eric:NetworksMember
749 Digital services [member] Member eric:DigitalServicesMember
750 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
751 Products and services [member] Member ifrs-full:ProductsAndServicesMember
752 IPR licensing revenues [member] Member eric:IprLicensingRevenuesMember
753 Range [axis] Axis ifrs-full:RangeAxis
754 Ranges [member] Member ifrs-full:RangesMember
755 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
756 Major customers [axis] Axis ifrs-full:MajorCustomersAxis
757 Customers [member] Member ifrs-full:MajorCustomersMember
758 10 largest customers [member] Member eric:TenLargestCustomersMember
759 Largest customer [member] Member eric:LargestCustomerMember
760 Disclosure of operating segments [line items] LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
761 Number of operating segments reported Concept (Integer) For Period eric:NumberOfOperatingSegmentsReported
762 Description of factors used to identify entity's reportable segments Concept (Text/String) For Period ifrs-full:FactorsUsedToIdentifyEntitysReportableSegments
763 Percentage of revenue Concept (Percent) For Period eric:PercentageOfIPRRevenue
764 Number of customer for which revenues from transactions have Concept (Integer) For Period eric:NumberOfCustomerRepresentTenPercentOrMoreRevenue
765 Number of customer base Concept (Integer) For Period eric:NumberOfCustomers
766 Number of largest customers accounted for 48% (45%) of net sales Concept (Integer) For Period eric:NumberOfCustomersRepresentingFourtyEightPercentOfSales
767 Percentage of contribution to net sales Concept (Percent) For Period ifrs-full:PercentageOfEntitysRevenue
768 1089 - Disclosure - Segment Information - Summary of Operating Segments (Detail) Network

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769 Disclosure of operating segments [table] Table

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770 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
771 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
772 Operating segments [member] Member ifrs-full:OperatingSegmentsMember
773 Segments [axis] Axis ifrs-full:SegmentsAxis
774 Segments [member] Member ifrs-full:SegmentsMember
775 Networks [member] Member eric:NetworksMember
776 Digital services [member] Member eric:DigitalServicesMember
777 Managed services [member] Member eric:ManagedServicesMember
778 Emerging business and other [member] Member eric:EmergingBusinessAndOtherMember
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788 Taxes Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
789 Net income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
790 Other segment items Abstract eric:OtherSegmentItemsAbstract
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793 Depreciations Concept (Monetary) For Period Debit ifrs-full:DepreciationExpense
794 Impairment losses Concept (Monetary) For Period Debit ifrs-full:ImpairmentLoss
795 Reversals of impairment losses Concept (Monetary) For Period Credit ifrs-full:ReversalOfImpairmentLoss
796 Restructuring expenses Concept (Monetary) For Period Debit ifrs-full:ExpenseOfRestructuringActivities
797 Gains/losses on sale of investments and operations Concept (Monetary) For Period Credit eric:GainsLossesOnSaleOfInvestmentsAndOperations
798 1090 - Disclosure - Segment Information - Summary of Geographical Information (Detail) Network

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803 North East Asia [member] Member eric:NorthEastAsiaMember
804 North America [member] Member srt:NorthAmericaMember
805 Europe and Latin America [member] Member eric:EuropeAndLatinAmericaMember
806 Middle East and Africa [member] Member eric:MiddleEastAndAfricaMember
807 Other regions [member] Member eric:OtherRegionsMember
808 Sweden [member] Member country:SE
809 European union [member] Member eric:EuropeanUnionMember
810 US [member] Member country:US
811 China [member] Member country:CN
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813 Segments [member] Member ifrs-full:SegmentsMember
814 Networks [member] Member eric:NetworksMember
815 Digital services [member] Member eric:DigitalServicesMember
816 Managed services [member] Member eric:ManagedServicesMember
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820 Non-current assets, total Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOtherThanFinancialInstrumentsDeferredTaxAssetsPostemploymentBenefitAssetsAndRightsArisingUnderInsuranceContracts
821 1091 - Disclosure - Net Sales - Summary of Net Sales (Detail) Network

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822 Disclosure of Net Sales [table] Table

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826 Software [member] Member eric:SoftwareMember
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830 IPR licensing revenues Concept (Monetary) For Period Credit ifrs-full:LicenceFeeIncome
831 Export sales from Sweden Concept (Monetary) For Period Credit eric:ExportSales
832 1092 - Disclosure - Expenses by Nature - Summary of Expenses by Nature (Detail) Network

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833 Implied Table Table

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837 Amortization and depreciation Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
838 Impairments, obsolescence allowances and revaluation Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
839 Financial expenses Concept (Monetary) For Period Debit eric:FinanceCostsIncome
840 Taxes Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
841 Expenses incurred Concept (Monetary) For Period Debit eric:MiscellaneousNonOperatingExpense
842 Inventory increase/decrease Concept (Monetary) For Period Debit eric:IncreaseDecreaseInInventories
843 Additions to capitalized development Concept (Monetary) For Period Credit ifrs-full:PaymentsForDevelopmentProjectExpenditure
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845 1093 - Disclosure - Expenses by Nature - Additional Information (Detail) Network

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846 Expense By Nature [table] Table

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851 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
852 Revised Business Support System Strategy [member] Member eric:RevisedBusinessSupportSystemStrategyMember
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854 Expense of restructuring activities Concept (Monetary) For Period Debit ifrs-full:ExpenseOfRestructuringActivities
855 1094 - Disclosure - Expenses by Nature - Summary of Restructuring Charges by Function (Detail) Network

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856 Expense By Nature [table] Table

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864 1095 - Disclosure - Other Operating Income and Expenses - Schedule of Other Operating Income and Expenses (Detail) Network

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865 Implied Table Table

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869 Gains on sales of investments and operations Concept (Monetary) For Period Credit eric:GainsOnSalesOfInvestmentsAndOperations
870 Other operating revenues Concept (Monetary) For Period Credit eric:OtherOperatingIncome1
871 Total other operating income Concept (Monetary) For Period Credit ifrs-full:MiscellaneousOtherOperatingIncome
872 Other operating expenses Abstract eric:OtherOperatingExpensesAbstract
873 Losses on sales of intangible assets and PP&E Concept (Monetary) For Period Debit ifrs-full:LossesOnDisposalsOfNoncurrentAssets
874 Losses on sales of investments and operations Concept (Monetary) For Period Debit eric:LossesOnSalesOfInvestmentsAndOperations
875 Write-down of goodwill Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossGoodwill
876 Other operating expenses Concept (Monetary) For Period Debit eric:OtherOperatingExpense
877 Total other operating expenses Concept (Monetary) For Period Debit ifrs-full:MiscellaneousOtherOperatingExpense
878 1096 - Disclosure - Other Operating Income and Expenses - Schedule of Other Operating Income and Expenses (Parenthetical) (Detail) Network

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879 Implied Table Table

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881 Revaluation of cash flow hedges Concept (Monetary) For Period Credit eric:RevaluationOfCashFlowHedges
882 1097 - Disclosure - Inventories - Summary of Inventories (Detail) Network

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883 Implied Table Table

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885 Raw materials, components, consumables and manufacturing work in progress Concept (Monetary) As Of Debit ifrs-full:RawMaterials
886 Finished products and goods for resale Concept (Monetary) As Of Debit ifrs-full:FinishedGoods
887 Contract work in progress Concept (Monetary) As Of Debit ifrs-full:WorkInProgress
888 Inventories, net Concept (Monetary) As Of Debit ifrs-full:Inventories
889 1098 - Disclosure - Inventories - Additional Information (Detail) Network

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890 Implied Table Table

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893 Inventory obsolescence allowances Concept (Monetary) As Of Credit eric:AllowanceForInventoryObsolescence
894 1099 - Disclosure - Inventories - Movements in Obsolescence Allowances (Detail) Network

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895 Implied Table Table

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896 Disclosure of inventories [abstract] Abstract eric:DisclosureOfInventoriesAbstract
897 Inventory obsolescence allowances, Opening balance Concept (Monetary) As Of Credit eric:AllowanceForInventoryObsolescence
898 Additions, net Concept (Monetary) For Period Debit eric:InventoryAllowanceAdditionNet
899 Utilization Concept (Monetary) For Period Debit eric:UtilizationOfInventory
900 Translation differences Concept (Monetary) As Of Debit eric:InventoryRecognisedAsForeignCurrencyTranslationDifference
901 Balances regarding acquired/divested businesses Concept (Monetary) As Of Debit ifrs-full:InventoryRecognisedAsOfAcquisitionDate
902 Inventory obsolescence allowances, Closing balance Concept (Monetary) As Of Credit eric:AllowanceForInventoryObsolescence
903 1100 - Disclosure - Customer Contract Related Balances - Schedule of Trade Receivables, Customer Finance, Contract Assets and Contract Liabilities (Detail) Network

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904 Implied Table Table

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906 Customer finance credits Concept (Monetary) As Of Debit eric:CustomerFinanceCreditsNet
907 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
908 Contract assets Concept (Monetary) As Of Debit ifrs-full:ContractAssets
909 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
910 1101 - Disclosure - Customer Contract Related Balances - Additional Information (Detail) Network

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911 Disclosure Of Receivables Customer Finance Contract Assets And Contract Liabilities [table] Table

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912 Maturity [axis] Axis ifrs-full:MaturityAxis
913 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
914 2019 [member] Member ifrs-full:NotLaterThanOneYearMember
915 2020 [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
916 Disclosure Of Receivables Customer Finance Contract Assets And Contract Liabilities [line items] LineItems eric:DisclosureOfReceivablesCustomerFinanceContractAssetsAndContractLiabilitiesLineItems
917 Trade receivables related to associated companies and joint ventures Concept (Monetary) As Of Debit ifrs-full:ReceivablesDueFromAssociates
918 Customer finance credits current Concept (Monetary) As Of Debit eric:CustomerFinanceCreditsCurrent
919 Percentage of expected to recognize transaction price allocated to remaining performance obligation as revenue Concept (Percent) For Period eric:PercentageOfEntityWhichExpectsToRecogniseTransactionPriceAllocatedToRemainingPerformanceObligationsAsRevenue
920 1102 - Disclosure - Customer Contract Related Balances - Summary of Significant Movements in Contract Assets and Liabilities (Detail) Network

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921 Implied Table Table

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922 Disclosure of performance obligations [abstract] Abstract ifrs-full:DisclosureOfPerformanceObligationsAbstract
923 Revenue recognized in the year relating to the opening contract liability balance Concept (Monetary) For Period Credit ifrs-full:RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod
924 Revenue recognized relating to performance obligations satisfied in prior financial periods Concept (Monetary) For Period Credit ifrs-full:RevenueFromPerformanceObligationsSatisfiedOrPartiallySatisfiedInPreviousPeriods
925 Aggregate amount of transaction price allocated to unsatisfied or partially satisfied performance obligations Concept (Monetary) As Of Credit ifrs-full:TransactionPriceAllocatedToRemainingPerformanceObligations
926 1103 - Disclosure - Other Current Receivables - Summary of Other Current Receivables (Detail) Network

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927 Disclosure Of Other Current Receivables [table] Table

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928 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
929 Products and services [member] Member ifrs-full:ProductsAndServicesMember
930 Prepaid expenses [member] Member eric:PrepaidExpensesMember
931 Advance payments to suppliers [member] Member eric:AdvancePaymentMember
932 Derivatives with a positive value [member] Member eric:DerivativesWithPositiveValueMember
933 Taxes [member] Member eric:TaxesMember
934 Others [member] Member eric:OthersMember
935 Disclosure of other current receivables [line items] LineItems eric:DisclosureOfOtherCurrentReceivablesLineItems
936 Total other current receivables Concept (Monetary) As Of Debit ifrs-full:OtherCurrentReceivables
937 1104 - Disclosure - Trade Payables - Summary of Trade Payables (Detail) Network

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938 Implied Table Table

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939 Trade and other payables [abstract] Abstract ifrs-full:TradeAndOtherPayablesAbstract
940 Trade payables to associated companies and joint ventures Concept (Monetary) As Of Credit eric:TradePayablesToAssociateCompaniesAndJointVentures
941 Trade payables, excluding associated companies and joint ventures Concept (Monetary) As Of Credit eric:TradePayablesToExcludesAssociateCompaniesAndJointVentures
942 Total Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
943 1105 - Disclosure - Other Current Liabilities - Summary of Other Current Liabilities (Detail) Network

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944 Disclosure Of Other Current Liabilities [table] Table

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946 Liabilities [member] Member ifrs-full:LiabilitiesMember
947 Of which employee-related [member] Member eric:EmployeeRelatedMember
948 Of which supplier-related [member] Member eric:SuppliersMember
949 Of which other [member] Member eric:OtherAccruedExpensesMember
950 Other [member] Member eric:OtherMember
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952 Accrued interest Concept (Monetary) As Of Credit eric:AccruedInterest
953 Accrued expenses Concept (Monetary) As Of Credit ifrs-full:CurrentAccruedExpensesAndOtherCurrentLiabilities
954 Derivatives with a negative value Concept (Monetary) As Of Credit eric:CurrentDerivatives
955 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
956 1106 - Disclosure - Intangible Assets - Summary of Intangible Assets (Detail) Network

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957 Disclosure of reconciliation of changes in intangible assets and goodwill [table] Table

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959 Intangible assets and goodwill [member] Member ifrs-full:IntangibleAssetsAndGoodwillMember
960 Capitalized development expenditure [member] Member ifrs-full:CapitalisedDevelopmentExpenditureMember
961 Goodwill [member] Member ifrs-full:GoodwillMember
962 IPR, brands and other intangible assets [member] Member eric:IPRBrandsAndOtherIntangibleAssetsMember
963 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
964 Carrying amount [member] Member ifrs-full:CarryingAmountMember
965 Cost [member] Member ifrs-full:GrossCarryingAmountMember
966 Accumulated depreciation and amortization [member] Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
967 Accumulated impairment losses [member] Member ifrs-full:AccumulatedImpairmentMember
968 Disclosure of reconciliation of changes in intangible assets and goodwill [line items] LineItems ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems
969 Intangible assets and goodwill, Opening balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
970 Acquisitions/capitalization Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
971 Amortizations Concept (Monetary) For Period ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
972 Impairment losses Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsAndGoodwill
973 Balances regarding acquired/divested businesses Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill
974 Sales/disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsIntangibleAssetsAndGoodwill
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977 Translation difference Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill
978 Intangible assets and goodwill, Closing balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
979 1107 - Disclosure - Intangible Assets - Additional Information (Detail) Network

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980 Disclosure of reconciliation of changes in intangible assets and goodwill [table] Table

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982 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
983 Mobile subscriptions [member] Member eric:MobileSubscriptionsMember
984 Smart phone [member] Member eric:SmartPhoneMember
985 5G subscriptions [member] Member eric:FiveGSubscriptionsMember
986 Networks [member] Member eric:NetworksMember
987 Digital services [member] Member eric:DigitalServicesMember
988 Emerging business and other [member] Member eric:EmergingBusinessAndOtherMember
989 Internet of things [member] Member eric:InternetOfThingsMember
990 Maturity [axis] Axis ifrs-full:MaturityAxis
991 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
992 Later than five year and not later than six years [member] Member eric:LaterThanFiveYearAndNotLaterThanSixYearsMember
993 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
994 Non-Adjusting Events after Reporting Period [Member] Member ifrs-full:NonadjustingEventsMember
995 Subscription by 2023 [member] Member eric:SubscriptionByTwoThousandTwentyThreeMember
996 Income Statement Location [axis] Axis eric:IncomeStatementLocationAxis
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998 Research and development expenses [member] Member eric:ResearchAndDevelopmentExpensesMember
999 Other operating expenses [member] Member eric:OtherOperatingExpensesMember
1000 Disclosure of reconciliation of changes in intangible assets and goodwill [line items] LineItems ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems
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1002 Write down of capitalized development expenses Concept (Monetary) For Period Debit eric:ImpairmentLossRecognisedInCapitalizedDevelopmentExpenses
1003 Write down of goodwill Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossGoodwill
1004 Estimated number of global mobile subscriptions Concept (Decimal) For Period eric:EstimatedNumberOfGlobalMobileSubscriptions
1005 Number of connected devices are forecasted Concept (Decimal) For Period eric:NumberOfConnectedDevicesAreForecasted
1006 Percentage of estimated increase in mobile video traffic Concept (Percent) For Period eric:PercentageOfEstimatedIncreaseInMobileVideoTraffic
1007 Percentage of estimated increase in mobile data traffic Concept (Percent) For Period eric:PercentageOfEstimatedIncreaseInMobileDataTraffic
1008 Estimated increase in mobile data traffic volume Concept (Pure) For Period eric:EstimatedIncreaseInMobileDataTrafficVolumeRatio
1009 Smartphone traffic growth Concept (Pure) For Period eric:SmartphoneTrafficGrowthRatio
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1011 Average GDP growth rate Concept (Percent) For Period eric:AverageGDPGrowthRate
1012 Impairment testing percentage Concept (Percent) For Period eric:ImpairmentTestingPercentage
1013 1108 - Disclosure - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) Network

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1014 Disclosure of detailed information about property, plant and equipment [table] Table

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1018 Machinery and other technical assets [member] Member eric:MachineryAndOtherTechnicalAssetsMember
1019 Other equipment tools and installations [member] Member eric:OtherEquipmentToolsAndInstallationsMember
1020 Construction in progress and advance payments [member] Member eric:ConstructionInProgressAndAdvancePaymentsMember
1021 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1022 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1023 Cost [member] Member ifrs-full:GrossCarryingAmountMember
1024 Accumulated depreciation and amortization [member] Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
1025 Accumulated impairment losses [member] Member ifrs-full:AccumulatedImpairmentMember
1026 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
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1028 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
1029 Depreciations Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
1030 Impairment losses Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1031 Balances regarding acquired/divested businesses Concept (Monetary) For Period Debit ifrs-full:ChangesInPropertyPlantAndEquipment
1032 Sales/disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsPropertyPlantAndEquipment
1033 Reclassification Concept (Monetary) For Period Credit eric:ReclassificationAdjustmentsOfPropertyPlantAndEquipment
1034 Translation difference Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
1035 Property, plant and equipment, closing balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1036 1109 - Disclosure - Property, Plant and Equipment - Additional Information (Detail) Network

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1037 Disclosure of detailed information about property, plant and equipment [table] Table

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1038 Segments [axis] Axis ifrs-full:SegmentsAxis
1039 Segments [member] Member ifrs-full:SegmentsMember
1040 Networks [member] Member eric:NetworksMember
1041 Digital services [member] Member eric:DigitalServicesMember
1042 Managed services [member] Member eric:ManagedServicesMember
1043 All other segments [member] Member ifrs-full:AllOtherSegmentsMember
1044 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1045 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
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1047 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
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1050 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1051 Contractual commitments for acquisition of property, plant and equipment Concept (Monetary) As Of Credit ifrs-full:ContractualCommitmentsForAcquisitionOfPropertyPlantAndEquipment
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1053 1110 - Disclosure - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Parenthetical) (Detail) Network

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1054 Disclosure of detailed information about property, plant and equipment [table] Table

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1055 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
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1057 Accumulated depreciation and amortization [member] Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
1058 Accumulated impairment losses [member] Member ifrs-full:AccumulatedImpairmentMember
1059 Accumulated depreciation, amortisation and impairment [member] Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
1060 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
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1063 Machinery and other technical assets [member] Member eric:MachineryAndOtherTechnicalAssetsMember
1064 Other equipment tools and installations [member] Member eric:OtherEquipmentToolsAndInstallationsMember
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1067 Other property, plant and equipment [member] Member ifrs-full:OtherPropertyPlantAndEquipmentMember
1068 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
1069 Currently stated [member] Member ifrs-full:RestatedMember
1070 Adjusted opening balance [member] Member ifrs-full:FinancialEffectOfCorrectionsOfAccountingErrorsMember
1071 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1072 Opening balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1073 1111 - Disclosure - Leasing - Additional Information (Detail) Network

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1074 Disclosure Of Leases [table] Table

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1075 Arrangements involving legal form of lease [axis] Axis ifrs-full:ArrangementsInvolvingLegalFormOfLeaseAxis
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1077 Lessor [member] Member eric:LessorMember
1078 Lessee [member] Member eric:LesseeMember
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1080 Ranges [member] Member ifrs-full:RangesMember
1081 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1082 Top of range [member] Member ifrs-full:TopOfRangeMember
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1084 Finance lease obligations Concept (Monetary) As Of Credit ifrs-full:FinanceLeaseLiabilities
1085 Expenses for leasing of assets Concept (Monetary) For Period Debit ifrs-full:LeaseAndSubleasePaymentsRecognisedAsExpense
1086 Variable lease expenses Concept (Monetary) For Period Debit eric:VariableLeaseExpnenses
1087 Leasing contract period Concept (xbrli:durationItemType) For Period eric:LeaseContractForPeriod
1088 Leasing income Concept (Monetary) For Period Credit ifrs-full:ContingentRentsRecognisedAsIncome
1089 1112 - Disclosure - Leasing - Summary of Future Minimum Lease Payment Obligations (Detail) Network

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1090 Disclosure of finance lease and operating lease by lessee [table] Table

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1091 Maturity [axis] Axis ifrs-full:MaturityAxis
1092 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1093 2019 [member] Member ifrs-full:NotLaterThanOneYearMember
1094 2020 [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1095 2021 [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1096 2022 [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1097 2023 [member] Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
1098 2024 and later [member] Member ifrs-full:LaterThanFiveYearsMember
1099 Disclosure of finance lease and operating lease by lessee [line items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
1100 Operating leases Concept (Monetary) For Period Debit ifrs-full:MinimumOperatingLeasePayments
1101 Future minimum, Operating leases Concept (Monetary) For Period Credit ifrs-full:ContingentRentsRecognisedAsIncomeClassifiedAsOperatingLease
1102 1113 - Disclosure - Provisions - Summary of Provisions (Detail) Network

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1103 Disclosure Of Changes In Provisions [table] Table

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1106 Restructuring [member] Member ifrs-full:RestructuringProvisionMember
1107 Customer Related Provision [member] Member eric:CustomerRelatedProvisionMember
1108 Suppliers Related Provision [member] Member eric:SuppliersRelatedProvisionMember
1109 Warranty [member] Member ifrs-full:WarrantyProvisionMember
1110 Other [member] Member ifrs-full:MiscellaneousOtherProvisionsMember
1111 Disclosure Of Changes In Provisions [line items] LineItems eric:DisclosureOfChangesInProvisionsLineItems
1112 Opening balance Concept (Monetary) As Of Credit ifrs-full:Provisions
1113 Additions Concept (Monetary) For Period Credit ifrs-full:NewProvisionsOtherProvisions
1114 Reversal of excess amounts Concept (Monetary) For Period Debit ifrs-full:UnusedProvisionReversedOtherProvisions
1115 Negative effect on Income statement Concept (Monetary) For Period Debit eric:ProvisionsNegativeEffectOnIncomeStatement
1116 Utilization/Cash out Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
1117 Reclassifications Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesOtherProvisions
1118 Translation difference Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
1119 Closing balance Concept (Monetary) As Of Credit ifrs-full:Provisions
1120 1114 - Disclosure - Provisions - Additional Information (Detail) Network

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1121 Disclosure of Provisions [table] Table

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1122 Maturity [axis] Axis ifrs-full:MaturityAxis
1123 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1124 2019 [member] Member ifrs-full:NotLaterThanOneYearMember
1125 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
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1127 Restructuring [member] Member ifrs-full:RestructuringProvisionMember
1128 Customer Related Provision [member] Member eric:CustomerRelatedProvisionMember
1129 Suppliers Related Provision [member] Member eric:SuppliersRelatedProvisionMember
1130 Warranty [member] Member ifrs-full:WarrantyProvisionMember
1131 Other [member] Member ifrs-full:MiscellaneousOtherProvisionsMember
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1134 Revised Business Support System Strategy [member] Member eric:RevisedBusinessSupportSystemStrategyMember
1135 Restructuring [member] Member ifrs-full:RestructuringProvisionMember
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1138 Reversal of excess amounts Concept (Monetary) For Period Debit ifrs-full:UnusedProvisionReversedOtherProvisions
1139 Actual cash outlays Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
1140 Estimated cash outlays Concept (Monetary) For Period Debit eric:EstimatedProvisionsUsedCashOutDuringPeriod
1141 Non-current provisions Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisions
1142 Total provisions Concept (Monetary) As Of Credit ifrs-full:Provisions
1143 1115 - Disclosure - Contingent liabilities - Summary of Contingent Liabilities (Detail) Network

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1144 Implied Table Table

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*

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1145 Disclosure of contingent liabilities [abstract] Abstract ifrs-full:DisclosureOfContingentLiabilitiesAbstract
1146 Contingent liabilities Concept (Monetary) As Of ifrs-full:EstimatedFinancialEffectOfContingentLiabilities
1147 Total Concept (Monetary) As Of ifrs-full:EstimatedFinancialEffectOfContingentLiabilities
1148 1116 - Disclosure - Contingent Liabilities - Additional Information (Detail) Network

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1149 Disclosure of Contingent Liabilities [Table] Table

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1150 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
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1152 Contingent liability for guarantees [member] Member ifrs-full:ContingentLiabilityForGuaranteesMember
1153 Eastern District of Texas [member] Member eric:EasternDistrictOfTexasMember
1154 Disclosure of Contingent Liabilities [Line Items] LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
1155 Guarantees of loans to other companies Concept (Monetary) As Of Credit eric:GuaranteesOfLoansToOtherCompanies
1156 Financial guarantee for third parties Concept (Monetary) As Of Debit eric:FinancialGuaranteesForThirdParties
1157 Amount of damage in one lawsuits Concept (Monetary) As Of Debit eric:LossContingencyDamagesSoughtValueByCourt
1158 Number of patents infringed Concept (Pure) As Of eric:NumberOfPatentsFoundInfringed
1159 1117 - Disclosure - Assets Pledged as Collateral - Summary of Assets Pledged as Collateral (Detail) Network

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1160 Implied Table Table

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*

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1162 Chattel mortgages Concept (Monetary) As Of Credit eric:AssetsPledgedAsCollateralForChattelMortgages
1163 Bank deposits Concept (Monetary) As Of Credit eric:AssetsPledgedAsCollateralForBankDeposits
1164 Total Concept (Monetary) As Of Credit eric:AssetsPledged
1165 1118 - Disclosure - Contractual Obligations - Summary of Contractual Obligations (Detail) Network

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1166 Disclosure Of Contractual Obligations [table] Table

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1169 Contractual obligations [member] Member eric:ContractualObligationsMember
1170 Maturity [axis] Axis ifrs-full:MaturityAxis
1171 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1172 2019 [member] Member ifrs-full:NotLaterThanOneYearMember
1173 Maturity between 1 and 3 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
1174 Maturity between 3 and 5 years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
1175 2024 and later [member] Member ifrs-full:LaterThanFiveYearsMember
1176 Disclosure of Contractual Obligations [line items] LineItems eric:DisclosureOfContractualObligationsLineItems
1177 Current and non-current debt Concept (Monetary) As Of Credit eric:InterestBearingLiabilitiesIncludingInterestPayment
1178 Operating leases Concept (Monetary) As Of Credit eric:OperatingLeaseLiabilities
1179 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
1180 Purchase obligations Concept (Monetary) As Of Credit eric:PurchaseObligations
1181 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
1182 Commitments for customer finance Concept (Monetary) As Of Credit eric:CreditCommitmentsForCustomerFinance
1183 Total Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
1184 1119 - Disclosure - Equity and Other Comprehensive Income (Loss) - Summary of Capital Stock (Detail) Network

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1185 Disclosure of classes of share capital [table] Table

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1188 Capital stock [member] Member ifrs-full:IssuedCapitalMember
1189 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1190 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1191 Class A shares [member] Member eric:ClassASharesMember
1192 Class B shares [member] Member eric:ClassBSharesMember
1193 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1194 Number of shares Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
1195 Capital stock Concept (Monetary) As Of Credit ifrs-full:Equity
1196 1120 - Disclosure - Equity and Other Comprehensive Income (Loss) - Additional Information (Detail) Network

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1197 Disclosure of classes of share capital [table] Table

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1199 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1200 Class A shares [member] Member eric:ClassASharesMember
1201 Class B shares [member] Member eric:ClassBSharesMember
1202 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
1203 Non-Adjusting Events after Reporting Period [Member] Member ifrs-full:NonadjustingEventsMember
1204 Major ordinary share transactions [member] Member ifrs-full:MajorOrdinaryShareTransactionsMember
1205 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1206 Shares quota value Concept (Share) As Of ifrs-full:ParValuePerShare
1207 Voting rights of share holders Concept (Text/String) For Period ifrs-full:RightsPreferencesAndRestrictionsAttachingToClassOfShareCapital
1208 Treasury shares Concept (Shares) As Of eric:NumberTreasuryShares
1209 Dividend proposed Concept (Share) For Period eric:DividendsProposedAsDistributionsToOwnersPerShare
1210 1121 - Disclosure - Equity and Other Comprehensive Income (Loss) - Summary of Reconciliation of Number of Shares (Detail) Network

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1211 Reconciliation of number of shares outstanding [table] Table

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1214 Capital stock [member] Member ifrs-full:IssuedCapitalMember
1215 Reconciliation of number of shares outstanding [line items] LineItems eric:ReconciliationOfNumberOfSharesOutstandingLineItems
1216 Number of shares Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
1217 Equity Concept (Monetary) As Of Credit ifrs-full:Equity
1218 1122 - Disclosure - Business Combinations - Summary of Net Assets Acquired and Total Consideration Transferred Business Combinations (Detail) Network

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1219 Disclosure of consideration transferred business combinations [table] Table

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*

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1220 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
1221 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
1222 Acquisitions 2016-2018 [member] Member ifrs-full:BusinessCombinationsMember
1223 Disclosure of consideration transferred business combinations [line items] LineItems eric:DisclosureOfConsiderationTransferredBusinessCombinationsLineItems
1224 Total consideration, including cash Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
1225 Net assets acquired Abstract eric:NetAssetsAcquiredAbstract
1226 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsRecognisedAsOfAcquisitionDate
1227 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
1228 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IdentifiableIntangibleAssetsRecognisedAsOfAcquisitionDate
1229 Investments in associates Concept (Monetary) As Of Debit eric:InvestmentsInAssociatesRecognisedAsOfAcquisitionDate
1230 Other assets Concept (Monetary) As Of Debit eric:OtherAssetsRecognisedAsOfAcquisitionDate
1231 Other liabilities Concept (Monetary) As Of Credit eric:OtherLiabilitiesRecognizedAsOfAcquisitionDate
1232 Total identifiable net assets Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
1233 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
1234 Total Concept (Monetary) As Of Debit eric:NetAssetsRecognisedAsOfAcquisitionDate
1235 Acquisition-related costs Concept (Monetary) For Period Debit ifrs-full:AcquisitionrelatedCostsForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination
1236 1123 - Disclosure - Business Combinations - Summary of Net Assets Acquired and Total Consideration Transferred Business Combinations (Parenthetical) (Detail) Network

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1237 Disclosure of consideration transferred business combinations [table] Table

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1238 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
1239 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
1240 Acquisitions 2016-2018 [member] Member ifrs-full:BusinessCombinationsMember
1241 Disclosure of consideration transferred business combinations [line items] LineItems eric:DisclosureOfConsiderationTransferredBusinessCombinationsLineItems
1242 Goodwill acquired Concept (Monetary) As Of Debit ifrs-full:GoodwillRecognisedAsOfAcquisitionDate
1243 Reclassification from purchase price allocation Concept (Monetary) As Of Debit eric:ReclassificationAfterFinalizationOfPurchasePriceAllocations
1244 1124 - Disclosure - Business Combinations - Additional Information (Detail) Network

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*

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1245 Disclosure of detailed information about business combination [table] Table

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*

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1246 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
1247 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
1248 CENX [member] Member eric:CENXMember
1249 Acquisitions 2016-2018 [member] Member ifrs-full:BusinessCombinationsMember
1250 Vidscale [member] Member eric:VidScaleMember
1251 Placecast [member] Member eric:PlacecastMember
1252 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1253 Continuing operations [member] Member ifrs-full:ContinuingOperationsMember
1254 Divestments 2016-2018 [member] Member eric:DivestmentsMember
1255 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1256 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1257 Ericsson Local Services AB [member] Member eric:EricssonLocalServicesABMember
1258 Excellence Field Factory [member] Member eric:ExcellenceFieldFactoryMember
1259 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
1260 Cash flow effect pursuant to business combinations Concept (Monetary) For Period Debit eric:EffectOnCashFlowDueToDivestment
1261 Business acquisition, ownership percentage Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
1262 Number of employees Concept (Decimal) As Of ifrs-full:NumberOfEmployees
1263 Number of service engineers Concept (Integer) As Of eric:NumberOfServiceEngineers
1264 1125 - Disclosure - Business Combinations - Summary of Divestments Transactions (Detail) Network

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1265 Disclosure Of Divestitures [table] Table

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1266 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1267 Continuing operations [member] Member ifrs-full:ContinuingOperationsMember
1268 Divestments 2016-2018 [member] Member eric:DivestmentsMember
1269 Disclosure Of Divestitures [line items] LineItems eric:DisclosureOfDivestituresLineItems
1270 Proceeds Concept (Monetary) For Period Debit eric:ProceedsFromDivestiture
1271 Net assets disposed of Abstract eric:NetAssetsDisposalOfAbstract
1272 Property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:DisposalsPropertyPlantAndEquipment
1273 Investments in joint ventures and associated companies Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
1274 Intangible assets Concept (Monetary) For Period Credit ifrs-full:DisposalsIntangibleAssetsOtherThanGoodwill
1275 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
1276 Other assets Concept (Monetary) For Period Debit ifrs-full:AssetsOtherThanCashOrCashEquivalentsInSubsidiaryOrBusinessesAcquiredOrDisposed2013
1277 Provisions, incl. post-employement benefits Concept (Monetary) As Of Credit eric:DisposalOfProvisionsIncludingPostemployementBenefits
1278 Other liabilities Concept (Monetary) For Period Credit ifrs-full:LiabilitiesInSubsidiaryOrBusinessesAcquiredOrDisposed2013
1279 Total net assets Concept (Monetary) For Period Debit eric:NetAssetsLiabilitiesInSubsidiaryOrBusinessesAcquiredOrDisposed
1280 Net gains/losses from divestments Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfInvestments
1281 Cash flow effect Concept (Monetary) For Period Debit eric:EffectOnCashFlowDueToDivestment
1282 1126 - Disclosure - Business Combinations - Summary of Business Acquisitions Transactions (Detail) Network

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1283 Disclosure of business divestitures [table] Table

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1284 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
1285 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
1286 CENX [member] Member eric:CENXMember
1287 Vidscale [member] Member eric:VidScaleMember
1288 Placecast [member] Member eric:PlacecastMember
1289 Nodeprime [member] Member eric:NodeprimeMember
1290 Ericpol [member] Member eric:EricpolMember
1291 FYI Television [member] Member eric:FYITelevisionMember
1292 Disclosure of business divestitures [line items] LineItems eric:DisclosureOfBusinessDivestituresLineItems
1293 Company Concept (Text/String) For Period ifrs-full:NameOfAcquiree
1294 Description Concept (Text/String) For Period ifrs-full:DescriptionOfAcquiree
1295 Transaction date Concept (Date) For Period ifrs-full:DateOfAcquisition2013
1296 1127 - Disclosure - Business Combinations - Summary of Business Divestments Transactions (Detail) Network

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1297 Disclosure of business divestitures [table] Table

*

*

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1298 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
1299 Continuing operations [member] Member ifrs-full:ContinuingOperationsMember
1300 Divestments 2016-2018 [member] Member eric:DivestmentsMember
1301 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1302 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1303 Ericsson Local Services AB [member] Member eric:EricssonLocalServicesABMember
1304 Excellence Field Factory [member] Member eric:ExcellenceFieldFactoryMember
1305 Power Modules [member] Member eric:PowerModulesMember
1306 Birla Ericsson Optical Ltd [member] Member eric:BirlaEricssonOpticalLtdMember
1307 Disclosure of business divestitures [line items] LineItems eric:DisclosureOfBusinessDivestituresLineItems
1308 Divestments, Company Concept (Text/String) For Period eric:NameOfBusinessSold
1309 Divestments, Description Concept (Text/String) For Period eric:DescriptionOfDivestments
1310 Business Divestments, transaction date Concept (Text/String) For Period eric:DateOfDivestments
1311 1128 - Disclosure - Associated Companies - Equity in Associated Companies (Detail) Network

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1312 Disclosure of Investments Accounted for Using Equity Method [table] Table

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1313 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1314 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1315 Associates [member] Member ifrs-full:AssociatesMember
1316 Disclosure Of Investments Accounted For Using Equity Method [line items] LineItems eric:DisclosureOfInvestmentsAccountedForUsingEquityMethodLineItems
1317 Equity in joint ventures and associated companies,Opening balance Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
1318 Investments Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
1319 Share in earnings Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod
1320 Distribution of capital stock Concept (Monetary) For Period Debit eric:DistributionofCapitalStock
1321 Taxes Concept (Monetary) For Period Debit ifrs-full:TaxExpenseOtherThanIncomeTaxExpense
1322 Dividends Concept (Monetary) For Period Debit ifrs-full:DividendsPaid
1323 Divested business Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughDisposalOfSubsidiary
1324 Translation difference Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersFinancialAssets
1325 Equity in joint ventures and associated companies,Closing balance Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
1326 1129 - Disclosure - Financial Risk Management - Additional Information (Detail) Network

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1327 Disclosure Of Financial Risk Management [table] Table

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1395 Unutilized customer finance commitments Concept (Monetary) As Of Debit eric:UnutilizedCustomerFinanceCommitments
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1409 Net asset Concept (Monetary) As Of Debit ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
1410 Liabilities Concept (Monetary) As Of Credit ifrs-full:GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1411 Offsetting financial liabilities Concept (Monetary) As Of Debit ifrs-full:GrossFinancialAssetsSetOffAgainstFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1412 Net liabilities Concept (Monetary) As Of Credit ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
1413 1130 - Disclosure - Financial Risk Management - Schedule of Capital Objectives-Related Information (Detail) Network

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1414 Disclosure Of Capital Objectives Related Information [table] Table

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1418 Standard and Poor's [member] Member eric:StandardAndPoorsMember
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1422 Free cash flow Concept (Monetary) For Period eric:CashFlowsFromUsedInOperatingActivitiesNet
1423 Positive net cash Concept (Monetary) As Of Debit ifrs-full:Cash
1424 Post-employment benefits Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
1425 Moody's Concept (Text/String) For Period eric:DescriptionOfCreditRatings
1426 1131 - Disclosure - Financial Risk Management - Summary of Net Exposure for Largest Currencies Impact on Sales (Detail) Network

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1427 Disclosure of Currency Exposure [table] Table

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1430 USD [member] Member currency:USD
1431 EUR [member] Member currency:EUR
1432 CNY [member] Member currency:CNY
1433 INR [member] Member currency:INR
1434 AUD [member] Member currency:AUD
1435 JPY [member] Member currency:JPY
1436 BRL [member] Member currency:BRL
1437 SAR [member] Member currency:SAR
1438 GBP [member] Member currency:GBP
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1441 Sales transaction exposure Concept (Monetary) For Period eric:CurrencyGainsLossesIncludedInCostOfSales
1442 Sales net exposure Concept (Monetary) For Period Credit eric:NetSalesExposure
1443 Incurred cost transaction exposure Concept (Monetary) For Period Debit eric:InterestExpenseInterestIncomeAndNetForeignExchangeGainLossesIncurred
1444 Net transaction exposure Concept (Monetary) For Period Credit eric:IncreaseDecreaseInNetDebtThroughForeignCurrencyExchangeExposures
1445 1132 - Disclosure - Financial Risk Management - Summary of Sensitivity to Interest Rate Increase of One Basis Point (Detail) Network

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1446 Disclosure Of Financial Risk Management [table] Table

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1451 Maturity between 1 and 3 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
1452 Maturity between 3 and 5 years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
1453 2024 and later [member] Member ifrs-full:LaterThanFiveYearsMember
1454 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
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1456 Interest Bearing Assets [member] Member eric:InterestBearingAssetsMember
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1461 1133 - Disclosure - Financial Risk Management - Disclosure of Detailed Information about Currency Derivatives (Detail) Network

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1462 Disclosure of detailed information about currency and interest rate derivatives [table] Table

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1463 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
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1465 Currency Derivatives [member] Member eric:CurrencyDerivativesMember
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1471 Maturity between 1 and 3 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
1472 Maturity between 3 and 5 years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
1473 2024 and later [member] Member ifrs-full:LaterThanFiveYearsMember
1474 Types of hedges [axis] Axis ifrs-full:TypesOfHedgesAxis
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1479 Liability Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValue
1480 1134 - Disclosure - Financial Risk Management - Disclosure of Detailed Information about Currency Derivatives (Parenthetical) (Detail) Network

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1481 Disclosure of detailed information about currency and interest rate derivatives [table] Table

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1485 Disclosure of detailed information about currency and interest rate derivatives [line items] LineItems eric:DisclosureOfDetailedInformationAboutCurrencyAndInterestRateDerivativesLineItems
1486 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssets
1487 1135 - Disclosure - Financial Risk Management - Summary of Movements in Allowances for Impairment of Trade Receivables and Contract Assets (Detail) Network

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1488 Implied Table Table

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1489 Trade and other receivables [abstract] Abstract ifrs-full:TradeAndOtherReceivablesAbstract
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1491 Adjustment due to IFRS 9 Concept (Monetary) For Period Credit eric:OpeningBalanceOfTradeReceivablesAllowanceForImpairmentAdjustmentDueToIfrs
1492 Opening balance, adjusted Concept (Monetary) For Period Credit eric:TradeReceivablesAllowanceForImpairmentAdjusted
1493 Losses recognized in profit or loss Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLossTradeReceivables
1494 Write-offs Concept (Monetary) For Period Debit eric:AllowanceForImpairmentOfTradeReceivablesWriteOff
1495 Translation difference Concept (Monetary) For Period Debit eric:TradeReceivablesTranslationDifferenceForAllowanceForImpairment
1496 Closing balance Concept (Monetary) As Of Credit eric:TradeReceivablesAllowanceForImpairment
1497 1136 - Disclosure - Financial Risk Management - Summary of Movements in Allowances for Impairment of Trade Receivables and Contract Assets (Parenthetical) (Detail) Network

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1498 Trade and Other Receivables [table] Table

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*

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1501 Contract assets [member] Member ifrs-full:ContractAssetsMember
1502 Trade and Other Receivables [line items] LineItems eric:TradeAndOtherReceivablesLineItems
1503 Contract assets Concept (Monetary) As Of Credit eric:TradeReceivablesAllowanceForImpairment
1504 1137 - Disclosure - Financial Risk Management - Summary of Aging Analysis of Gross Values by Risk Category (Detail) Network

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1505 Disclosure of credit risk exposure [table] Table

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*

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1517 Disclosure of credit risk exposure [line items] LineItems ifrs-full:DisclosureOfCreditRiskExposureLineItems
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1519 1138 - Disclosure - Financial Risk Management - Summary of Movements in Allowances for Impairment of Trade Receivables and Contract (Detail) Network

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1520 Implied Table Table

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1524 Utilized Concept (Monetary) For Period Credit eric:AllowancesForImpairmentOfTradeReceivablesAndContractUtilized
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1526 Reclassification Concept (Monetary) For Period Debit eric:AllowancesForImpairmentOfTradeReceivablesAndContractReclassification
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1528 Closing balance Concept (Monetary) As Of Credit eric:AllowancesForImpairmentOfTradeReceivablesAndContract
1529 1139 - Disclosure - Financial Risk Management - Summary of Aging Analysis Impairment of Trade Receivables and Contract Assets (Detail) Network

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1530 Disclosure of impairment loss and reversal of impairment loss [table] Table

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1537 Of which past due and impaired in the following time intervals less than 90 days [member] Member eric:OfWhichPastDueAndImpairedInTheFollowingTimeIntervalsLessThan90DaysMember
1538 Of which past due and impaired in the following time intervals 90 days or more [member] Member eric:OfWhichPastDueAndImpairedInTheFollowingTimeIntervals90DaysOrMoreMember
1539 Disclosure of impairment loss and reversal of impairment loss [line items] LineItems ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossLineItems
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1542 1140 - Disclosure - Financial Risk Management - Summary of Outstanding Customer Finance Credit Exposure (Detail) Network

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1543 Implied Table Table

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1544 Disclosure of outstanding customer finance [abstract] Abstract eric:DisclosureOfOutstandingCustomerFinanceAbstract
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1546 Financial guarantees for third-parties Concept (Monetary) As Of Debit eric:CustomerFinanceCreditsFinancialGuaranteesForThirdparties
1547 Accrued interest Concept (Monetary) As Of Debit eric:CustomerFinanceAccruedInterest
1548 Maximum exposure to credit risk Concept (Monetary) As Of ifrs-full:MaximumExposureToCreditRisk
1549 Less third-party risk coverage Concept (Monetary) As Of Credit eric:ThirdPartyRiskCoverage
1550 The Company's risk exposure, less third-party risk coverage Concept (Monetary) As Of Debit eric:CustomerFinanceCreditsNetOfThirdPartyRiskCoverage
1551 1141 - Disclosure - Financial Risk Management - Disclosure of Customer Finance Fair Value Reconciliation (Detail) Network

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1552 Implied Table Table

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1553 Disclosure of customer finance reconciliation [abstract] Abstract eric:DisclosureOfCustomerFinanceReconciliationAbstract
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1555 Additions Concept (Monetary) For Period Debit eric:FairValueReconciliationOfCustomerFinanceAdditions
1556 Disposals/repayments Concept (Monetary) For Period Debit eric:FairValueReconciliationOfCustomerFinanceDisposalsAndRepayments
1557 Revaluation Concept (Monetary) For Period Debit eric:FairValueReconciliationOfCustomerFinanceRevaluation
1558 Translation difference Concept (Monetary) For Period Debit eric:FairValueReconciliationOfCustomerFinanceTranslationDifference
1559 Closing balance Concept (Monetary) As Of Debit eric:FairValueReconciliationOfCustomerFinance
1560 Of which non-current Concept (Monetary) As Of Debit eric:FairValueReconciliationOfCustomerFinanceNonCurrent
1561 1142 - Disclosure - Financial Risk Management - Summary of Movements in Allowances for Impairment of Customer Finance (Detail) Network

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1562 Implied Table Table

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1563 Disclosure of outstanding customer finance [abstract] Abstract eric:DisclosureOfOutstandingCustomerFinanceAbstract
1564 Opening balance Concept (Monetary) As Of Credit eric:AllowancesForImpairmentOfCustomerFinance
1565 Additions Concept (Monetary) For Period Credit eric:AllowancesForImpairmentOfCustomerFinanceAdditions
1566 Utilized Concept (Monetary) For Period Debit eric:AllowancesForImpairmentOfCustomerFinanceUtilized
1567 Reversal of excess amounts Concept (Monetary) For Period Debit eric:AllowancesForImpairmentOfCustomerFinanceUtilizedReversalOfExcessAmounts
1568 Translation difference Concept (Monetary) For Period Debit eric:AllowancesForImpairmentOfCustomerFinanceTranslationDifference
1569 Closing balance Concept (Monetary) As Of Credit eric:AllowancesForImpairmentOfCustomerFinance
1570 1143 - Disclosure - Financial Risk Management - Summary of Aging Analysis of Customer Finance (Detail) Network

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1571 Disclosure Of Outstanding Customer Finance [table] Table

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1576 Of which past due in the following time intervals less than 90 days [member] Member eric:OfWhichPastDueInTheFollowingTimeIntervalsLessThan90DaysMember
1577 Of which past due in the following time intervals 90 days or more [member] Member eric:OfWhichPastDueInTheFollowingTimeIntervals90DaysOrMoreMember
1578 Of which past due and impaired in the following time intervals less than 90 days [member] Member eric:OfWhichPastDueAndImpairedInTheFollowingTimeIntervalsLessThan90DaysMember
1579 Of which past due and impaired in the following time intervals 90 days or more [member] Member eric:OfWhichPastDueAndImpairedInTheFollowingTimeIntervals90DaysOrMoreMember
1580 Disclosure Of Outstanding Customer Finance [line items] LineItems eric:DisclosureOfOutstandingCustomerFinanceLineItems
1581 Customer finance credits Concept (Monetary) As Of Debit eric:CustomerFinanceCredits
1582 Allowances for impairment Concept (Monetary) As Of Credit eric:AllowancesForImpairmentOfCustomerFinance
1583 1144 - Disclosure - Financial Risk Management - Summary of Cash, Cash Equivalents and Interest-Bearing Securities (Detail) Network

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1584 Disclosure of Cash and Cash Equivalents and Interest Bearing Securities [Table] Table

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1585 Maturity [axis] Axis ifrs-full:MaturityAxis
1586 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1587 Maturity within 3 months [member] Member ifrs-full:NotLaterThanThreeMonthsMember
1588 Maturity between 3 and 12 months [member] Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanOneYearMember
1589 Later than one year and not later than five years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1590 2024 and later [member] Member ifrs-full:LaterThanFiveYearsMember
1591 Disclosure of Cash and Cash Equivalents and Interest Bearing Securities [Line Items] LineItems eric:DisclosureOfCashAndCashEquivalentsAndInterestBearingSecuritiesLineItems
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1593 Type of issuer/counterpart Governments Concept (Monetary) As Of Debit ifrs-full:GovernmentDebtInstrumentsHeld
1594 Corporates Concept (Monetary) As Of Debit ifrs-full:CorporateDebtInstrumentsHeld
1595 Mortgage institutes Concept (Monetary) As Of Debit eric:MortgageDebtInstrumentHeld
1596 2017/2018 Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
1597 1145 - Disclosure - Financial Risk Management - Summary of Funding Programs (Detail) Network

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1598 Disclosure of Funding Programs [Table] Table

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1599 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1600 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1601 Euro Medium Term Note Program [member] Member eric:EuroMediumTermNoteProgramMember
1602 SEC Registered Program [member] Member eric:SECRegisteredProgramMember
1603 Disclosure of Funding Programs [Line Items] LineItems eric:DisclosureOfFundingProgramsLineItems
1604 Amount Concept (Monetary) For Period Credit eric:FundingProgramAmount
1605 Utilized Concept (Monetary) For Period Credit eric:FundingProgramUtilizedAmount
1606 Unutilized Concept (Monetary) For Period Credit eric:FundingProgramUnutilizedAmount
1607 1146 - Disclosure - Financial Risk Management - Summary of Committed Credit Facilities (Detail) Network

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1608 Disclosure Of Line of Credit Facility [table] Table

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1609 Credit Facility 1 [axis] Axis eric:CreditFacility1Axis
1610 Credit Facility 1 [domain] Member eric:CreditFacility1Domain
1611 Multi-currency revolving credit facility [member] Member eric:MulticurrencyRevolvingCreditFacilityMember
1612 European Investment Bank credit facility [member] Member eric:EuropeanInvestmentBankCreditFacilityMember
1613 Disclosure Of Line of Credit Facility [line items] LineItems eric:DisclosureOfLineOfCreditFacilityLineItems
1614 Committed credit facilities, Amount Concept (Monetary) For Period Credit eric:CommittedCreditFacilitiesAmount
1615 Committed credit facilities, Utilized Concept (Monetary) For Period Credit eric:CommittedCreditFacilitiesUtilized
1616 Committed credit facilities, Unutilized Concept (Monetary) For Period Credit eric:CommittedCreditFacilitiesUnutilized
1617 1147 - Disclosure - Financial Risk Management - Summary of Financial Instruments, Book Value (Detail) Network

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1618 Disclosure of detailed information about financial instruments [table] Table

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1619 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
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1621 Customer finance [member] Member eric:CustomerFinanceMember
1622 Trade receivables [member] Member ifrs-full:TradeReceivablesMember
1623 Interest bearing securities, non-current [member] Member eric:NoncurrentInterestBearingSecuritiesMember
1624 Cash equivalents [member] Member eric:CashEquivalents2Member
1625 Borrowings [member] Member eric:Borrowings1Member
1626 Trade payables [member] Member eric:TradePayablesMember
1627 Other financial assets [member] Member eric:OtherFinancialAssetMember
1628 Other Current Receivables [member] Member eric:OtherCurrentReceivablesMember
1629 Other Current Liabilities [member] Member eric:OtherCurrentLiabilitiesMember
1630 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
1631 Assets at fair value through profit or loss Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLoss
1632 Assets at amortized cost Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtAmortisedCost
1633 Loans and receivables Concept (Monetary) As Of Debit ifrs-full:LoansAndReceivables
1634 Assets at fair value through OCI Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
1635 Available-for-sale Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAvailableforsale
1636 Financial liabilities at fair value through profit or loss Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLoss
1637 Financial liabilities at amortized cost Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtAmortisedCost
1638 Total Concept (Monetary) As Of Debit eric:FinancialAssetsAndLiabilities
1639 1148 - Disclosure - Financial Income and Expenses - Summary of Financial Income and Expenses (Detail) Network

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1640 Disclosure Of Detailed Information About Finance Income Expense [table] Table

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1643 Contractual interest on financial liabilities [member] Member eric:ContractualInterestOnFinancialLiabilitiesCategoryMember
1644 Financial liabilities at designated fair value through profit or loss, category [member] Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
1645 Instruments at fair value through profit or loss [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1646 Financial assets including hedge relationships at fair value through profit or loss category [member] Member eric:FinancialAssetsIncludingHedgeRelationshipsAtFairValueThroughProfitOrLossCategoryMember
1647 Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember
1648 Instruments at amortized cost [member] Member ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
1649 Other financial income and expenses [member] Member eric:OtherFinancialIncomeCostCategoryMember
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1651 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1652 Contractual interest on financial assets [member] Member eric:ContractualInterestOnFinancialAssetsCategoryMember
1653 Contractual interest on financial assets at fair value through profit or loss category [member] Member eric:ContractualInterestOnFinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1654 Instruments at fair value through profit or loss [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1655 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
1656 Available for sale [member] Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
1657 Loans and receivables [member] Member ifrs-full:LoansAndReceivablesCategoryMember
1658 Other financial income and expenses [member] Member eric:OtherFinancialIncomeCostCategoryMember
1659 Disclosure of detailed information about finance income expense [line items] LineItems eric:DisclosureOfDetailedInformationAboutFinanceIncomeExpenseLineItems
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1661 Finance expenses Concept (Monetary) For Period Debit eric:FinanceCostsIncome
1662 1149 - Disclosure - Financial Income and Expenses - Summary of Financial Income and Expenses (Parenthetical) (Detail) Network

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1663 Disclosure Of Detailed Information About Finance Income Expense [table] Table

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1664 Statement of comprehensive income, profit or loss location [axis] Axis eric:StatementOfComprehensiveIncomeProfitOrLossLocationAxis
1665 Statement of comprehensive income, profit or loss location [member] Member eric:StatementOfComprehensiveIncomeProfitOrLossLocationMember
1666 Cost of sales [member] Member eric:CostOfSalesMember
1667 Disclosure of detailed information about finance income expense [line items] LineItems eric:DisclosureOfDetailedInformationAboutFinanceIncomeExpenseLineItems
1668 Net loss from derivatives hedging operating assets and liabilities Concept (Monetary) For Period Debit eric:NetLossFromDerivativesHedgingOperatingAssetsAndLiabilities
1669 1150 - Disclosure - Financial Assets, Non-current - Summary of Financial Assets, Non-current (Detail) Network

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1670 Disclosure of financial assets [table] Table

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1671 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1672 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1673 Other investment in shares and participations [member] Member eric:OtherInvestmentInSharesAndParticipationsMember
1674 Interest bearing securities, non-current [member] Member eric:NoncurrentInterestBearingSecuritiesMember
1675 Derivatives, non-current [member] Member eric:NoncurrentDerivativesMember
1676 Other financial assets, non-current [member] Member eric:NoncurrentOtherFinancialAssetsMember
1677 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1678 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1679 Cost [member] Member ifrs-full:GrossCarryingAmountMember
1680 Accumulated impairment losses [member] Member ifrs-full:AccumulatedImpairmentMember
1681 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1682 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1683 Financial assets, non-current [member] Member eric:NonCurrentFinancialAssetsMember
1684 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1685 Financial assets, non-current, Opening balance Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssets
1686 Additions Concept (Monetary) For Period Debit eric:AdditionsNoncurrentFinancialAssets
1687 Impairment losses/allowances Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1688 Disposals/repayments/deductions Concept (Monetary) For Period Credit eric:DisposalAndRepaymentsDeductionsOfNoncurrentFinancialAssets
1689 Change in value in funded pension plans Concept (Monetary) For Period Debit eric:ChangeInValueInFundedPensionPlansOfNoncurrentFinancialAssets
1690 Revaluation Concept (Monetary) For Period Debit eric:RevaluationOfNoncurrentFinancialAssets
1691 Reclassification Concept (Monetary) For Period Debit eric:ReclassificationOfNoncurrentFinancialAssets
1692 Translation difference Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughForeignExchangeFinancialAssets
1693 Financial assets, non-current, Closing balance Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssets
1694 Financial assets, non-current Concept (Monetary) For Period Debit eric:NetCarryingValueOfNoncurrentFinancialAssets
1695 1151 - Disclosure - Interest-Bearing Liabilities - Additional Information (Detail) Network

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1696 Disclosure Of Interest Bearing Liabilities [table] Table

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*

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1697 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1698 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1699 Derivatives designated as hedges [member] Member eric:DerivativesDesignatedAsHedgesMember
1700 Disclosure Of Interest Bearing Liabilities [line items] LineItems eric:DisclosureOfInterestBearingLiabilitiesLineItems
1701 Interest-bearing liabilities Concept (Monetary) As Of Credit eric:InterestBearingLiabilities
1702 Financing cash flow Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
1703 Weighted average interest rate of long term debt Concept (Percent) For Period eric:WeightedAverageInterestRateOfLongTermDebt
1704 1152 - Disclosure - Interest-Bearing Liabilities - Summary of Interest-Bearing Liabilities (Detail) Network

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1705 Implied Table Table

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1706 Disclosure Of Borrowings [abstract] Abstract eric:DisclosureOfBorrowingsAbstract
1707 Borrowings, current Abstract ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowingsAbstract
1708 Current part of non-current borrowings Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
1709 Other borrowings, current Concept (Monetary) As Of Credit ifrs-full:OtherCurrentBorrowingsAndCurrentPortionOfOtherNoncurrentBorrowings
1710 Total borrowings, current Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
1711 Borrowings, non-current Abstract ifrs-full:NoncurrentPortionOfNoncurrentBorrowingsByTypeAbstract
1712 Notes and bond loans Concept (Monetary) As Of Credit eric:NotesAndBondLoans
1713 Other borrowings, non-current Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfOtherNoncurrentBorrowings
1714 Total borrowings, non-current Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
1715 Total interest-bearing liabilities Concept (Monetary) As Of Credit eric:InterestBearingLiabilities
1716 1153 - Disclosure - Interest-Bearing Liabilities - Reconciliation of Liabilities Arising from Financing Activities (Detail) Network

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1717 Implied Table Table

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1718 Disclosure of reconciliation of liabilities arising from financing activities [abstract] Abstract ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesAbstract
1719 Opening balance Concept (Monetary) As Of Credit ifrs-full:Borrowings
1720 Adjustment due to IFRS 9 Concept (Monetary) For Period Credit eric:AdjustmentDueToIFRS9
1721 Adjusted opening balance Concept (Monetary) As Of Credit eric:BorrowingsAdjusted
1722 Cash flows Abstract ifrs-full:StatementOfCashFlowsAbstract
1723 Proceeds from issuance of borrowings Concept (Monetary) For Period Debit eric:ProceedsFromReconciliatioOfDebtClassifiedAsFinancingActivities
1724 Repayment of borrowings Concept (Monetary) For Period Credit eric:RepaymentOfReconciliationOfDebtFromFinancingActivities
1725 Non-cash changes Abstract eric:NonCashChangesAbstract
1726 Effect of foreign exchange movement Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughEffectOfChangesInForeignExchangeRatesLiabilitiesArisingFromFinancingActivities
1727 Revaluation due to changes in credit risk Concept (Monetary) For Period Credit eric:RevaluationDueToChangesInCreditRisk
1728 Other changes in fair value Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInFairValuesLiabilitiesArisingFromFinancingActivities
1729 Reclassification Concept (Monetary) For Period Credit eric:ReclassificationOfLiabilitiesArisingFromFinancingActivities
1730 Closing balance Concept (Monetary) As Of Credit ifrs-full:Borrowings
1731 1154 - Disclosure - Interest-Bearing Liabilities - Summary of Notes, Bonds, Bilateral Loans and Committed Credit (Detail) Network

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1732 Disclosure Of Borrowings [table] Table

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1733 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1734 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1735 Notes and bond loans [Member] Member eric:NotesAndBondLoansMember
1736 Bilateral loans [Member] Member eric:BilateralLoansMember
1737 Maturity [axis] Axis ifrs-full:MaturityAxis
1738 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1739 December 23, 2020 [member] Member eric:DecemberTwentyThreeTwoThousandTwentyMember
1740 May 15, 2022 [member] Member eric:MayFifteenTwoThousandTwentyTwoMember
1741 March 1, 2021 [member] Member eric:MarchOneTwoThousandTwentyOneMember
1742 March 1, 2024 [member] Member eric:MarchOneTwoThousandTwentyFourMember
1743 December 22, 2025 [member] Member eric:DecemberTwentyTwoTwoThousandTwentyFiveMember
1744 September 30, 2021 [Member] Member eric:SeptemberThirtyTwoThousandTwentyOneMember
1745 November 6, 2020 [Member] Member eric:NovemberSixTwoThousandTwentyMember
1746 June 15, 2023 [member] Member eric:JuneFifteenTwoThousandTwentyThreeMember
1747 Disclosure of Borrowings [Line Items] LineItems eric:DisclosureOfBorrowingsLineItems
1748 Nominal amount Concept (Monetary) As Of ifrs-full:NotionalAmount
1749 Coupon Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1750 Currency Concept (Text/String) For Period ifrs-full:BorrowingsOriginalCurrency
1751 Maturity date Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
1752 Book value Concept (Monetary) As Of Credit eric:BorrowingsBookValue
1753 Changes in fair value due to changes in credit risk Concept (Monetary) For Period Credit ifrs-full:ChangesInFairValueOfFinancialLiabilityAttributableToChangesInCreditRiskOfLiability
1754 Unrealized hedge gain/loss (included in book value) Concept (Monetary) For Period Credit eric:GainsLossesOnUnrealizedHedges
1755 Cumulative changes in fair value due to changes in credit risk Concept (Monetary) For Period Debit eric:CumulativeChangesInFairValeDueToChangesInCreditRisk
1756 1155 - Disclosure - Post-Employment Benefits - Additional Information (Detail) Network

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1757 Disclosure of employee benefits [table] Table

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1758 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
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1760 Ericsson Pensionsstiftelse [member] Member eric:EricssonPensionsstiftelseMember
1761 Range [axis] Axis ifrs-full:RangeAxis
1762 Ranges [member] Member ifrs-full:RangesMember
1763 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1764 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1765 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1766 Sweden [member] Member country:SE
1767 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1768 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1769 Alecta [member] Member eric:AlectaMember
1770 Disclosure of employee benefits [line items] LineItems eric:DisclosureOfEmployeeBenefitsLineItems
1771 Actuarial losses on defined benefit obligations Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1772 Actuarial losses on defined benefit obligations Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
1773 Percentage of defined benefit plans Concept (Percent) For Period eric:PercentageOfDefinedBenefitPlans
1774 Percentage of target ratio fair value plan assets Concept (Percent) For Period eric:InsuranceCompanyAlectasTargetRatio
1775 Percentage Alecta's of collective funding ratio Concept (Percent) For Period eric:CollectiveFundingRatio
1776 Percentage of company's share of Alecta's saving premiums Concept (Percent) For Period eric:PercentageOfCompanyShareOfParticipantsSavingPremiums
1777 Percentage of total share of active members in Alecta Concept (Percent) For Period eric:PercentageOfCompanysShareOfActiveMembersInParticipants
1778 Expected contribution to Alectas plan Concept (Monetary) For Period Credit ifrs-full:EstimateOfContributionsExpectedToBePaidToPlan
1779 Percentage of maximum pension liability relation to PRI pensionsgaranti Concept (Percent) For Period eric:PercentageOfMaximumPensionLiability
1780 Amount of pledged business mortgage Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
1781 Description of terms and conditions of financial assets pledged as collateral for liabilities or contingent liabilities Concept (Text/String) For Period ifrs-full:DescriptionOfTermAndConditionsOfFinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
1782 Discount rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
1783 Discount rates based upon Swedish covered bonds Concept (Percent) As Of eric:ActuarialAssumptionOfDiscountRatesBasedUponSwedishCoveredBonds
1784 Decrease in defined benefit obligation resulting from discount rates based upon Swedish covered bonds Concept (Monetary) As Of Debit eric:DecreaseInDefinedBenefitObligationResultingFromDiscountRatesBasedUponSwedishCoveredBonds
1785 1156 - Disclosure - Post-Employment Benefits - Summary of Amount Recognized in the Consolidated Balance Sheet (Detail) Network

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1786 Disclosure of defined benefit plans [table] Table

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1787 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1788 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1789 Sweden [member] Member country:SE
1790 US [member] Member country:US
1791 United Kingdom [member] Member country:GB
1792 Other Countries [member] Member eric:OtherCountriesMember
1793 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1794 Defined benefit obligation (DBO) Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
1795 Fair value of plan assets Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
1796 Deficit/surplus (+/-) Concept (Monetary) As Of Debit ifrs-full:SurplusDeficitInPlan
1797 Plans with net surplus, excluding asset ceiling Concept (Monetary) As Of Debit ifrs-full:RecognisedAssetsDefinedBenefitPlan
1798 Provision for post-employment benefits Concept (Monetary) As Of Credit ifrs-full:NoncurrentRecognisedLiabilitiesDefinedBenefitPlan
1799 1157 - Disclosure - Post-Employment Benefits - Summary of Amount Recognized in the Consolidated Balance Sheet (Parenthetical) (Detail) Network

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1800 Implied Table Table

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1801 Disclosure of defined benefit plans [abstract] Abstract ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
1802 Movements in effect of asset ceiling Concept (Monetary) For Period Credit eric:MovementsInEffectOfAssetCeiling
1803 Effect of asset ceiling Concept (Monetary) As Of Debit eric:DefinedBenefitObligationEffectOfAssetCeiling
1804 1158 - Disclosure - Post-Employment Benefits - Summary of Pension Costs for Defined Contribution Plans and Defined Benefit Plans (Detail) Network

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1805 Disclosure Of Defined Benefit Plans Expense Recognized In Income Statement [table] Table

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1806 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1807 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1808 Sweden [member] Member country:SE
1809 US [member] Member country:US
1810 United Kingdom [member] Member country:GB
1811 Other Countries [member] Member eric:OtherCountriesMember
1812 Disclosure Of Defined Benefit Plans Expense Recognized In Income Statement [line items] LineItems eric:DisclosureOfDefinedBenefitPlansExpenseRecognizedInIncomeStatementLineItems
1813 Pension cost for defined contribution plans Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
1814 Pension cost for defined benefit plans Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
1815 Total Concept (Monetary) For Period Debit eric:DefinedContributionAndDefinedBenefitPlanExpense
1816 Total pension cost expressed as a percentage of wages and salaries Concept (Percent) For Period eric:DefinedBenefitExpenseBenefitAsPercentageOfWagesAndSalaries
1817 1159 - Disclosure - Post-Employment Benefits - Summary of Change in the Net Defined Benefit Obligation (Detail) Network

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1818 Disclosure of net defined benefit liability (asset) [table] Table

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1819 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1820 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
1821 Present value of defined benefit obligation [member] Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
1822 Plan assets [member] Member ifrs-full:PlanAssetsMember
1823 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1824 Opening balance Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1825 Included in the income statement Abstract ifrs-full:ChangesInNetDefinedBenefitLiabilityAssetAbstract
1826 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1827 Past service cost and gains and losses on settlements Concept (Monetary) For Period Credit ifrs-full:PastServiceCostAndGainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset
1828 Interest cost/income (+/-) Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1829 Taxes and administrative expenses Concept (Monetary) For Period Debit eric:AdministrativeExpensesAndTaxesNetDefinedBenefitLiabilityAsset
1830 Other Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesNetDefinedBenefitLiabilityAsset
1831 Components of defined benefit cost recognized Concept (Monetary) For Period Credit eric:ComponentsOfDefinedBenefitCostRecognizedInTheIncomeStatement
1832 Remeasurements Abstract ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract
1833 Return on plan assets excluding amounts in interest expense/income Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
1834 Actuarial gains/losses (-/+) arising from changes in demographic assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset
1835 Actuarial gains/losses (-/+) arising from changes in financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1836 Experience-based gains/losses (-/+) Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset
1837 Total remeasurements Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
1838 Translation difference Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesReimbursementRightsAtFairValue
1839 Contributions and payments from: Abstract ifrs-full:ContributionsToPlanNetDefinedBenefitLiabilityAssetAbstract
1840 Employers Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
1841 Plan participants Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset
1842 Benefit payments Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
1843 Settlements Concept (Monetary) For Period Debit ifrs-full:PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset
1844 Business combinations and divestments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughBusinessCombinationsAndDisposalsNetDefinedBenefitLiabilityAsset
1845 Closing balance Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1846 1160 - Disclosure - Post-Employment Benefits - Summary of Change in the Net Defined Benefit Obligation (Parenthetical) (Detail) Network

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1847 Disclosure of net defined benefit liability (asset) [table] Table

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1848 Maturity [axis] Axis ifrs-full:MaturityAxis
1849 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1850 2019 [member] Member ifrs-full:NotLaterThanOneYearMember
1851 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1852 Expected contribution to plans Concept (Monetary) For Period Credit ifrs-full:EstimateOfContributionsExpectedToBePaidToPlan
1853 Weighted average duration of DBO Concept (Decimal) For Period ifrs-full:WeightedAverageDurationOfDefinedBenefitObligation
1854 Asset ceiling excluded from defined benefit cost recognized in income statement Concept (Monetary) For Period Debit eric:AssetCeilingExcludedFromDefinedBenefitCostRecognizedInIncomeStatement
1855 1161 - Disclosure - Post-Employment Benefits - Summary of Present Value of the Defined Benefit Obligation (Detail) Network

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1856 Changes In Present Value Of Defined Benefit Obligations [table] Table

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1857 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1858 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1859 Sweden [member] Member country:SE
1860 US [member] Member country:US
1861 United Kingdom [member] Member country:GB
1862 Other Countries [member] Member eric:OtherCountriesMember
1863 Funding arrangements of defined benefit plans [axis] Axis ifrs-full:FundingArrangementsOfDefinedBenefitPlansAxis
1864 Funding arrangements of defined benefit plans [member] Member ifrs-full:FundingArrangementsOfDefinedBenefitPlansMember
1865 Of which partially or fully funded [member] Member ifrs-full:WhollyOrPartlyFundedDefinedBenefitPlansMember
1866 Of which unfunded [member] Member ifrs-full:WhollyUnfundedDefinedBenefitPlansMember
1867 Changes In Present Value Of Defined Benefit Obligations [line items] LineItems eric:ChangesInPresentValueOfDefinedBenefitObligationsLineItems
1868 Defined benefit obligation (DBO) Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
1869 1162 - Disclosure - Post-Employment Benefits - Summary of Asset Allocation by Asset Type and Geography (Detail) Network

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1870 Disclosure of fair value of plan assets [table] Table

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1871 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1872 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1873 Cash and cash equivalents [Member] Member eric:CashAndCashEquivalentMember
1874 Equity securities [Member] Member eric:EquitySecurities1Member
1875 Debt securities [member] Member ifrs-full:DebtSecuritiesMember
1876 Real estate [member] Member eric:RealEstate1Member
1877 Assets held by insurance company [member] Member eric:AssetsHeldMember
1878 Other [Member] Member ifrs-full:OtherAssetsMember
1879 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1880 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1881 Sweden [member] Member country:SE
1882 US [member] Member country:US
1883 United Kingdom [member] Member country:GB
1884 Other Countries [member] Member eric:OtherCountriesMember
1885 Unconsolidated structured entities [axis] Axis ifrs-full:UnconsolidatedStructuredEntitiesAxis
1886 Entity's total for unconsolidated structured entities [member] Member ifrs-full:EntitysTotalForUnconsolidatedStructuredEntitiesMember
1887 Investment funds [member] Member ifrs-full:InvestmentFundsMember
1888 Disclosure of fair value of plan assets [line items] LineItems ifrs-full:DisclosureOfFairValueOfPlanAssetsLineItems
1889 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssets
1890 Equity securities Concept (Monetary) As Of Debit ifrs-full:EquityInstrumentsAmountContributedToFairValueOfPlanAssets
1891 Debt securities Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsAmountContributedToFairValueOfPlanAssets
1892 Real estate Concept (Monetary) As Of Debit ifrs-full:PropertyAmountContributedToFairValueOfPlanAssets
1893 Investment funds Concept (Monetary) As Of Debit ifrs-full:InvestmentFundsAmountContributedToFairValueOfPlanAssets
1894 Assets held by insurance company Concept (Monetary) As Of Debit ifrs-full:AssetbackedSecuritiesAmountContributedToFairValueOfPlanAssets
1895 Other Concept (Monetary) As Of Debit ifrs-full:OtherAssetsAmountContributedToFairValueOfPlanAssets
1896 Fair value of plan assets Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
1897 Percentage Of plan assets allocation of which unquoted Concept (Percent) For Period eric:PercentageOfPlanAssetsAtFairValue
1898 1163 - Disclosure - Post-Employment Benefits - Summary of Financial and Demographic Actuarial Assumptions (Detail) Network

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1899 Disclosure of financial and demographic actuarial assumptions [table] Table

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1900 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1901 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1902 Sweden [member] Member country:SE
1903 US [member] Member country:US
1904 United Kingdom [member] Member country:GB
1905 Disclosure of financial and demographic actuarial assumptions [line items] LineItems eric:DisclosureOfFinancialAndDemographicActuarialAssumptionsLineItems
1906 Financial assumptions Abstract eric:FinancialAssumptionsAbstract
1907 Discount rate, weighted average of total Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
1908 Demographic assumptions Abstract eric:DemographicAssumptionsAbstract
1909 Life expectancy after age 65 in years, weighted average Concept (Decimal) As Of ifrs-full:ActuarialAssumptionOfLifeExpectancyAfterRetirement
1910 1164 - Disclosure - Post-Employment Benefits - Summary of Total Remeasurements in Other Comprehensive Income (Loss) Related to Post-Employment Benefits (Detail) Network

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1911 Implied Table Table

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1912 Disclosure of Remeasurement of Other Comprehensive Income Loss Related to Post Employment Benefits [abstract] Abstract eric:DisclosureOfRemeasurementOfOtherComprehensiveIncomeLossRelatedToPostEmploymentBenefitsAbstract
1913 Actuarial gains and losses (+/-) Concept (Monetary) For Period Credit eric:ActuarialGainsLossAfterAdjustmentRecognizedInOtherComprehensiveIncome
1914 The effect of asset ceiling Concept (Monetary) For Period Debit ifrs-full:GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling
1915 Swedish special payroll taxes Concept (Monetary) For Period Debit eric:IncomeTaxRelatingToTaxEffectsRelativeToActuarialGainsLose
1916 Total Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
1917 1165 - Disclosure - Post-Employment Benefits - Summary of Sensitivity Analysis of Significant Actuarial Assumptions (Detail) Network

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1918 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

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1919 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1920 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
1921 Present value of defined benefit obligation [member] Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
1922 Geographical [Axis] Axis srt:StatementGeographicalAxis
1923 Geographical [Domain] Member srt:SegmentGeographicalDomain
1924 Sweden [member] Member country:SE
1925 US [member] Member country:US
1926 United Kingdom [member] Member country:GB
1927 Disclosure of sensitivity analysis for actuarial assumptions [line items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1928 Discount rate, weighted average of total +0.5% Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
1929 Discount rate, weighted average of total -0.5% Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
1930 1166 - Disclosure - Information Regarding Members of the Board of Directors and Group Management - Summary of Remuneration to Members of the Board of Directors (Detail) Network

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1931 Disclosure of Information About Board Management and Employees [table] Table

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1932 Separate management entities [axis] Axis ifrs-full:SeparateManagementEntitiesAxis
1933 Separate management entities [member] Member ifrs-full:SeparateManagementEntitiesMember
1934 Board member [member] Member eric:BoardMembersMember
1935 Title of individual 1 [axis] Axis eric:TitleOfIndividual1Axis
1936 Government Grants [domain] Member eric:GovernmentGrantsDomain
1937 Ronnie Leten [member] Member eric:RonnieLetenMember
1938 Helena Stjernholm [member] Member eric:HelenaStjernholmMember
1939 Jacob Wallenberg [member] Member eric:JacobWallenbergMember
1940 Jon Fredrik Baksaas [member] Member eric:JonFredrikBaksaasMember
1941 Jan Carlson [member] Member eric:JanCarlsonMember
1942 Nora Denzel [member] Member eric:NoraDenzelMember
1943 Borje Ekholm [member] Member eric:BorjeEkholmMember
1944 Eric A. Elzvik [member] Member eric:EricAElzvikMember
1945 Kurt Jofs [member] Member eric:KurtJofsMember
1946 Kristin S. Rinne [member] Member eric:KristinSRinneMember
1947 Torbjrn Nyman [member] Member eric:TorbjrnNymanMember
1948 Kjell-Ake Soting [member] Member eric:KjellAkeSotingMember
1949 Roger Svensson [member] Member eric:RogerSvenssonMember
1950 Karin Aberg [member] Member eric:KarinAbergMember
1951 Per Holmberg [member] Member eric:PerHolmbergMember
1952 Tomas Lundh [member] Member eric:TomasLundhMember
1953 Anders Ripa [member] Member eric:AndersRipaMember
1954 Loredana Roslund [member] Member eric:LoredanaRoslundMember
1955 Classes of ordinary shares [axis] Axis ifrs-full:ClassesOfOrdinarySharesAxis
1956 Ordinary shares [member] Member ifrs-full:OrdinarySharesMember
1957 Synthetic shares [member] Member eric:SyntheticSharesMember
1958 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1959 Counterparties [member] Member ifrs-full:CounterpartiesMember
1960 Employee representatives [member] Member eric:EmployeeRepresentativesMember
1961 Deputy employee representatives [member] Member eric:DeputyEmployeeRepresentativesMember
1962 Disclosure of Information About Board Management and Employees [line items] LineItems eric:DisclosureOfInformationAboutBoardManagementAndEmployeesLineItems
1963 Board fees Concept (Monetary) For Period Debit eric:BoardFees
1964 Number of synthetic shares Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
1965 Portion of Board fee Concept (Percent) For Period eric:PercenatgeOfBoardFee
1966 Value at grant date of synthetic shares allocated Concept (Monetary) For Period Credit eric:SyntheticSharesValueAtGrantDate
1967 Number of previously allocated synthetic shares outstanding Concept (Shares) For Period eric:NumberOfPreviouslyAllocatedSyntheticSharesOutstanding
1968 Net change in value of synthetic shares Concept (Monetary) For Period Credit eric:NetChangeInValueOfSyntheticShares
1969 Committee fees Concept (Monetary) For Period Debit eric:CommitteeFees
1970 Total fees paid in cash Concept (Monetary) For Period Debit eric:FeesPaidInCash
1971 Total remuneration Concept (Monetary) For Period Debit eric:Remuneration
1972 1167 - Disclosure - Information Regarding Members of the Board of Directors and Group Management - Summary of Remuneration to Members of the Board of Directors (Parenthetical) (Detail) Network

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1973 Implied Table Table

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1974 Disclosure Of Information About Board Management And Employees [abstract] Abstract eric:DisclosureOfInformationAboutBoardManagementAndEmployeesAbstract
1975 Share price used to calculate value of synthetic shares Concept (Share) For Period eric:SharePriceUsedToCalculateValueOfSyntheticShares
1976 Dividend compensation per share included in value of synthetic shares Concept (Share) For Period eric:DividendsProposedAsDistributionsToOwnersPerShare
1977 Social security charges Concept (Monetary) For Period Debit eric:SocialSecurityCharges
1978 1168 - Disclosure - Information Regarding Members of the Board of Directors and Group Management - Additional Information (Detail) Network

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1979 Disclosure of Information About Board Management and Employees [table] Table

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1980 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1981 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1982 Class B shares [member] Member eric:ClassBSharesMember
1983 Synthetic shares [member] Member eric:SyntheticSharesMember
1984 Title of individual 1 [axis] Axis eric:TitleOfIndividual1Axis
1985 Government Grants [domain] Member eric:GovernmentGrantsDomain
1986 Chairman [member] Member eric:ChairmanMember
1987 Other directors [member] Member eric:OtherDirectorsMember
1988 Chairman of audit committee [member] Member eric:ChairmanOfAuditCommitteeMember
1989 Other non-employee members of audit committee [member] Member eric:OtherNonEmployeeMembersOfAuditCommitteeMember
1990 Chairmen of the finance and remuneration committees [member] Member eric:ChairmenOfFinanceAndRemunerationCommitteesMember
1991 Other non-employee members of finance and remuneration committees [member] Member eric:OtherNonEmployeeMembersOfFinanceAndRemunerationCommitteesMember
1992 Expense Categories [axis] Axis eric:ExpenseCategoriesAxis
1993 Expense Categories [domain] Member eric:ExpenseCategoriesDomain
1994 Board fees [member] Member eric:BoardFeesMember
1995 Committee fees [member] Member eric:CommitteeFeesMember
1996 Board and committee meeting attendance fee [member] Member eric:BoardAndCommitteeMeetingAttendanceFeeMember
1997 Member of remuneration committee [member] Member eric:MemberOfRemunerationCommitteeMember
1998 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1999 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2000 The President and CEO [member] Member eric:PresidentAndChiefExecutiveOfficerMember
2001 Other members of ELT [member] Member eric:OtherMembersOfExecutiveLeadershipTeamMember
2002 Range [axis] Axis ifrs-full:RangeAxis
2003 Ranges [member] Member ifrs-full:RangesMember
2004 Top of range [member] Member ifrs-full:TopOfRangeMember
2005 Disclosure of Information About Board Management and Employees [line items] LineItems eric:DisclosureOfInformationAboutBoardManagementAndEmployeesLineItems
2006 Fee and commission expense Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
2007 Board fee description Concept (Text/String) For Period eric:BoardFeeDescription
2008 Number of trading days Concept (xbrli:durationItemType) For Period eric:BasisOfAllocationInNumberOfTradingDaysFollowingPublicationOfInterimReport
2009 Weighted average market price Concept (Share) For Period eric:WeightedAverageMarketPrice
2010 Remuneration excluding social security charges Concept (Monetary) For Period Debit eric:RemunerationExcludingSocialSecurityCharges
2011 Number of shares outstanding Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
2012 Accounted debt Concept (Monetary) As Of Credit eric:AccountedDebt
2013 Additional arrangement period Concept (Text/String) For Period eric:DescriptionOfIndividualRemuneration
2014 Severance pay amounting period Concept (Text/String) For Period eric:DescriptionOfSeverancePay
2015 Description of individual fixed salary payable Concept (Text/String) For Period eric:DescriptionOfIndividualRemunarationPayablePeriod
2016 Commitments for defined benefit based pensions including disability and survivor's pension Concept (Monetary) As Of Credit eric:CommitmentsForDefinedBenefitBasedPensionsIncludingDisabilityAndSurvivorPension
2017 Commitments related to ITP and early retirement Concept (Monetary) As Of Credit eric:CommitmentsRelatedToItpAndEarlyRetirement
2018 Commitment to disability and survivors pensions Concept (Monetary) As Of Credit eric:CommitmentToDisabilityAndSurvivorsPensions
2019 1169 - Disclosure - Information Regarding Members of the Board of Directors and Group Management - Summary of Remuneration Costs for the President and CEO and Other Members of Executive Leadership Team (ELT) (Detail) Network

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2020 Classes Of Employee Benefits Expense [table] Table

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2021 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2022 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2023 The President and CEO [member] Member eric:PresidentAndChiefExecutiveOfficerMember
2024 Other members of executive team [member] Member eric:OtherMembersOfExecutiveTeamMember
2025 Assets and liabilities [axis] Axis ifrs-full:AssetsAndLiabilitiesAxis
2026 Assets and liabilities [member] Member ifrs-full:AssetsAndLiabilitiesMember
2027 Board of directors [member] Member eric:BoardOfDirectorsMember
2028 Classes Of Employee Benefits Expense [line items] LineItems eric:ClassesOfEmployeeBenefitsExpenseLineItems
2029 Salary Concept (Monetary) For Period Debit ifrs-full:WagesAndSalaries
2030 Termination benefits Concept (Monetary) For Period Debit ifrs-full:TerminationBenefitsExpense
2031 Annual variable remuneration provision earned for the year Concept (Monetary) For Period Debit eric:CostForAnnualVariableRemunerationEarnedInYearToBePaidYearAfter
2032 Long-term variable compensation provision Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationOtherLongtermBenefits
2033 Pension costs Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
2034 Other benefits Concept (Monetary) For Period Debit ifrs-full:OtherEmployeeExpense
2035 Social charges and taxes Concept (Monetary) For Period Debit ifrs-full:SocialSecurityContributions
2036 Total Concept (Monetary) For Period Debit ifrs-full:DirectorsRemunerationExpense
2037 1170 - Disclosure - Share Based Compensation - Summary of Maximum Outstanding Matching Rights (Detail) Network

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2038 Disclosure of Maximum Outstanding Matching Rights [table] Table

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2039 Classes of ordinary shares [axis] Axis ifrs-full:ClassesOfOrdinarySharesAxis
2040 Ordinary shares [member] Member ifrs-full:OrdinarySharesMember
2041 Number of Class B shares [member] Member eric:ClassBCommonStockMember
2042 Range [axis] Axis ifrs-full:RangeAxis
2043 Ranges [member] Member ifrs-full:RangesMember
2044 Top of range [member] Member ifrs-full:TopOfRangeMember
2045 Entity Contact Personnel, Contact Person Type [Axis] Axis dei:EntityContactPersonnelContactPersonTypeAxis
2046 Contact Person Type [Domain] Member dei:ContactPersonTypeDomain
2047 Other members of executive team [member] Member eric:OtherMembersOfExecutiveTeamMember
2048 Disclosure of Maximum Outstanding Matching Rights [line items] LineItems eric:DisclosureOfMaximumOutstandingMatchingRightsLineItems
2049 Stock Purchase Plans 2015-2016 Executive Performance Stock Plans 2015-2016 Concept (Shares) As Of eric:NumberOfSharesOutstandingMatchingRights
2050 1171 - Disclosure - Share Based Compensation - Additional Information (Detail) Network

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2051 Disclosure of Information About Board Management and Employees [table] Table

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2052 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2053 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2054 The President and CEO [member] Member eric:PresidentAndChiefExecutiveOfficerMember
2055 Other members of executive team [member] Member eric:OtherMembersOfExecutiveTeamMember
2056 Members of executive team [member] Member eric:MembersOfExecutiveTeamMember
2057 Other participants [member] Member eric:OtherParticipantsMember
2058 Senior Managers [member] Member eric:SeniorManagersMember
2059 Retention of key employees [member] Member eric:RetentionOfKeyEmployeesMember
2060 Plan Name1 [axis] Axis eric:PlanName1Axis
2061 Plan Name 1 [domain] Member eric:PlanName1Domain
2062 Long-term variable compensation program [member] Member eric:LongtermVariableCompensationProgramMember
2063 Stock Purchase plan 2016 [member] Member eric:TwoThousandSixteenStockPurchasePlanMember
2064 Executive performance plan [member] Member eric:ExecutivePerformancePlanMember
2065 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
2066 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
2067 Employee stock purchase plan [member] Member eric:EmployeeStockPurchasePlanMember
2068 Key contributor plan [member] Member eric:KeyContributorPlanMember
2069 Long-term variable compensation program [member] Member eric:LongtermVariableCompensationProgramMember
2070 Key contributor retention plan [member] Member eric:KeyContributorRetentionPlanMember
2071 Executive Performance Stock Plan [member] Member eric:ExecutivePerformanceStockPlanMember
2072 Range [axis] Axis ifrs-full:RangeAxis
2073 Ranges [member] Member ifrs-full:RangesMember
2074 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2075 Top of range [member] Member ifrs-full:TopOfRangeMember
2076 Title of individual 1 [axis] Axis eric:TitleOfIndividual1Axis
2077 Government Grants [domain] Member eric:GovernmentGrantsDomain
2078 Employees [member] Member eric:EmployeesMember
2079 Entity Contact Personnel, Contact Person Type [Axis] Axis dei:EntityContactPersonnelContactPersonTypeAxis
2080 Contact Person Type [Domain] Member dei:ContactPersonTypeDomain
2081 Executive team [member] Member eric:ExecutiveBoardMember
2082 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
2083 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
2084 Class B shares [member] Member eric:ClassBSharesMember
2085 Continuing involvement in derecognised financial assets by type of instrument [axis] Axis ifrs-full:ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis
2086 Types of instrument [member] Member ifrs-full:TypesOfInstrumentMember
2087 Purchased call options [member] Member ifrs-full:PurchasedCallOptionsMember
2088 Award Type 1 [axis] Axis eric:AwardType1Axis
2089 Equity Award [domain] Member eric:EquityAwardDomain
2090 Performance share awards [member] Member eric:PerformanceShareAwardsMember
2091 Disclosure of Information About Board Management and Employees [line items] LineItems eric:DisclosureOfInformationAboutBoardManagementAndEmployeesLineItems
2092 Matching result percentage Concept (Percent) As Of eric:MatchingPercentageOfOutstandingShares
2093 Number of matching shares received by serving employees Concept (Shares) For Period eric:StockPurchasePlanParticipantReceivedOrdinaryMatchingShare
2094 Number of shares issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
2095 Purchase of options shares Concept (Shares) For Period eric:PurchaseOfOptionsShares
2096 Purchase price Concept (Share) For Period eric:ExercisePricePerShareOptions
2097 Strike price Concept (Share) For Period eric:ShareStrikePrice
2098 No compensation expenses recognized during the period Concept (Text/String) For Period eric:DescriptionOfCompensationExpensesNotRecognized
2099 Total employees Concept (Decimal) As Of dei:EntityNumberOfEmployees
2100 Vesting period Concept (xbrli:durationItemType) For Period eric:ShareBasedPaymentArrangementVestingPeriod
2101 Vesting description Concept (Text/String) For Period ifrs-full:DescriptionOfVestingRequirementsForSharebasedPaymentArrangement
2102 Period of employement eligibility for awards Concept (xbrli:durationItemType) For Period eric:PeriodOfEmploymentEligibilityForAwards
2103 Percentage value of awards on annual base salary Concept (Percent) For Period eric:PercentageOfValueOfAwardsOnAnnualBaseSalary
2104 Percentage of performance share awards granted Concept (Percent) For Period eric:PercentageOfPerformanceShareAwardsGranted
2105 Fair value Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
2106 Per share value Concept (Share) As Of ifrs-full:ParValuePerShare
2107 Vesting level percentage Concept (Percent) For Period eric:VestingPercentage
2108 Increase in number of shares Concept (Shares) For Period eric:IncreaseDecreaseInNumberOfSharesAuthorised
2109 Total number of shares Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
2110 Share price Concept (Monetary) For Period ifrs-full:WeightedAverageSharePrice
2111 Recognized service period Concept (Text/String) For Period eric:ExpenseFromSharebasedPaymentTransactionsWithEmployeesRecognitionPeriod
2112 Number of employees who selected for plan Concept (Decimal) For Period eric:NumberOfEmployeesWhoSelectedForPlan
2113 Number of employees nominated for plan Concept (Decimal) For Period eric:NumberOfEmployeesNominatedForPlan
2114 Number of awards Concept (Text/String) For Period eric:NumberOfAwardsDescription
2115 Employee retention period Concept (xbrli:durationItemType) For Period eric:EmployeeRetentionPeriod
2116 Service period Concept (xbrli:durationItemType) For Period eric:SharebasedCompensationProgramServicePeriod
2117 Fair value share price Concept (Share) As Of eric:FairValuePricePerShare
2118 Liability arising from key contribution plan Concept (Monetary) For Period Debit eric:KeyManagementPersonnelCompensationLiability
2119 Gross fixed salary Concept (Percent) For Period eric:GrossFixedRatesOfSalary
2120 Description of type of plan Concept (Text/String) For Period ifrs-full:DescriptionOfTypeOfPlan
2121 Stock purchase plan contribution period Concept (xbrli:durationItemType) For Period eric:StockPurchasePlanContributionPeriod
2122 Employee retained contribution shares after investment, Period Concept (xbrli:durationItemType) For Period eric:EmployeeRetainedContributionSharesAfterInvestmentPeriod
2123 Number of countries participated in stock purchase plan Concept (Integer) For Period eric:NumberOfCountriesParticipatedInStockPurchasePlan
2124 Employees nominated Concept (Percent) For Period eric:PercentageOfContributionForEmployeeBenefits
2125 Matching share for each contribution share purchased Concept (Shares) For Period eric:StockPurchasePlanParticipantToObtainOrdinaryMatchingShareForEachContribution
2126 Number of performance matching shares to senior managers in addition to ordinary shares Concept (Shares) As Of eric:PerformanceMatchingSharesInAdditionToOrdinarySharesToSeniorManagers
2127 Percentage of employees offered participation Concept (Percent) For Period eric:PercentageOfEmployeesOfferedParticipation
2128 Average price of share Concept (Share) As Of eric:AveragePricePerShare
2129 Number of exercise and matching and vesting shares transferred Concept (Shares) For Period eric:NumberOfEquityInstrumentsExercisedAndMatchedSharesTransferred
2130 Percentage of shares outstanding Concept (Percent) For Period eric:PercentageOfSharesOutstanding
2131 Number of shares outstanding Concept (Shares) As Of eric:NumberOfSharesOutstandingExcludingTreasuryStock
2132 Number of treasury shares Concept (Shares) As Of eric:NumberOfTreasuryShares
2133 1172 - Disclosure - Share Based Compensation - Summary of Performance Criteria (Detail) Network

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2134 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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2135 Range [axis] Axis ifrs-full:RangeAxis
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2397 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

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2439 1195 - Disclosure - Earnings Per Share - Schedule of Earnings Per Share (Detail) Network

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2440 Implied Table Table

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2453 Implied Table Table

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2462 Disclosure of adjustments to reconcile net income to cash [table] Table

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2487 1198 - Disclosure - Statement of Cash Flows - Summary of Acquisitions/Divestments of Subsidiaries and Other Operations (Detail) Network

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2488 Disclosure Of Acquisitions And Divestments [table] Table

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2496 1199 - Disclosure - Fees to Auditors - Summary of Fees to Auditors (Detail) Network

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2508 1200 - Disclosure - Fees to Auditors - Additional Information (Detail) Network

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2509 Auditors Remuneration [table] Table

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2520 1201 - Disclosure - Events After The Reporting Period - Additional Information (Detail) Network

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2521 Disclosure of non-adjusting events after reporting period [table] Table

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