CAE INC (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line	Label	Object Class	Period Type	Balance	Report ElementName
1	0006000 - Document - Document and Entity Information	Network	*	*	http://www.cae.com/role/DocumentAndEntityInformation
2	Implied Table	Table	*	*	implied:Table
3	Document Information [Abstract]	Abstract			cae:DocumentInformationAbstract
4	Document Type	Concept (Submission Type)	For Period		dei:DocumentType
5	Amendment Flag	Concept (Yes/No)	For Period		dei:AmendmentFlag
6	Document Period End Date	Concept (Date)	For Period		dei:DocumentPeriodEndDate
7	Document Fiscal Year Focus	Concept (Year)	For Period		dei:DocumentFiscalYearFocus
8	Document Fiscal Period Focus	Concept (Fiscal Period)	For Period		dei:DocumentFiscalPeriodFocus
9	Entity Registrant Name	Concept (Text/String)	For Period		dei:EntityRegistrantName
10	Entity Central Index Key	Concept (CIK Number)	For Period		dei:EntityCentralIndexKey
11	Current Fiscal Year End Date	Concept (Month/Day)	For Period		dei:CurrentFiscalYearEndDate
12	Entity Current Reporting Status	Concept (Yes/No)	For Period		dei:EntityCurrentReportingStatus
13	Entity Common Stock, Shares Outstanding	Concept (Shares)	As Of		dei:EntityCommonStockSharesOutstanding
14	1001000 - Statement - Consolidated Statement of Financial Position	Network	*	*	http://www.cae.com/role/ConsolidatedStatementOfFinancialPosition
15	Implied Table	Table	*	*	implied:Table
16	Statement of financial position [abstract]	Abstract			ifrs-full:StatementOfFinancialPositionAbstract
17	Assets	Abstract			ifrs-full:AssetsAbstract
18	Current assets	Abstract			ifrs-full:CurrentAssetsAbstract
19	Cash and cash equivalents	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
20	Accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
21	Contracts in progress: assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentContractAssets
22	Inventories	Concept (Monetary)	As Of	Debit	ifrs-full:Inventories
23	Prepayments	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentPrepaidExpenses
24	Income taxes recoverable	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentTaxAssetsCurrent
25	Derivative financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentDerivativeFinancialAssets
26	Total current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssets
27	Non-current assets	Abstract			ifrs-full:NoncurrentAssetsAbstract
28	Property, plant and equipment	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
29	Intangible assets	Concept (Monetary)	As Of	Debit	ifrs-full:IntangibleAssetsAndGoodwill
30	Investment in equity accounted investees	Concept (Monetary)	As Of	Debit	ifrs-full:InvestmentAccountedForUsingEquityMethod
31	Deferred tax assets	Concept (Monetary)	As Of	Debit	ifrs-full:DeferredTaxAssets
32	Derivative financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentDerivativeFinancialAssets
33	Other assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherNoncurrentAssets
34	Total assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
35	Liabilities and equity	Abstract			ifrs-full:EquityAndLiabilitiesAbstract
36	Current liabilities	Abstract			ifrs-full:CurrentLiabilitiesAbstract
37	Accounts payable and accrued liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayables
38	Less: current portion	Concept (Monetary)	As Of	Credit	ifrs-full:OtherShorttermProvisions
39	Income taxes payable	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentTaxLiabilitiesCurrent
40	Deferred revenue	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredIncomeClassifiedAsCurrent
41	Contracts in progress: liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentContractLiabilities
42	Current portion of long-term debt	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentPortionOfLongtermBorrowings
43	Derivative financial liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentDerivativeFinancialLiabilities
44	Total current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilities
45	Non-current liabilities	Abstract			ifrs-full:NoncurrentLiabilitiesAbstract
46	Long-term portion	Concept (Monetary)	As Of	Credit	ifrs-full:OtherLongtermProvisions
47	Long-term debt	Concept (Monetary)	As Of	Credit	ifrs-full:LongtermBorrowings
48	Royalty obligations	Concept (Monetary)	As Of	Credit	cae:NonCurrentRoyaltyObligations
49	Employee benefits obligations	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentProvisionsForEmployeeBenefits
50	Deferred gains and other non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentLiabilities
51	Deferred tax liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilities
52	Derivative financial liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentDerivativeFinancialLiabilities
53	Total liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
54	Equity	Abstract			ifrs-full:EquityAbstract
55	Share capital	Concept (Monetary)	As Of	Credit	ifrs-full:IssuedCapital
56	Contributed surplus	Concept (Monetary)	As Of	Credit	ifrs-full:SharePremium
57	Accumulated other comprehensive income	Concept (Monetary)	As Of	Credit	ifrs-full:AccumulatedOtherComprehensiveIncome
58	Retained earnings	Concept (Monetary)	As Of	Credit	ifrs-full:RetainedEarnings
59	Equity attributable to equity holders of the Company	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAttributableToOwnersOfParent
60	Non-controlling interests	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
61	Total equity	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
62	Total liabilities and equity	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAndLiabilities
63	1002000 - Statement - Consolidated Income Statement	Network	*	*	http://www.cae.com/role/ConsolidatedIncomeStatement
64	Implied Table	Table	*	*	implied:Table
65	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
66	Profit (loss) [abstract]	Abstract			ifrs-full:ProfitLossAbstract
67	Revenue	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
68	Cost of sales	Concept (Monetary)	For Period	Debit	ifrs-full:CostOfSales
69	Gross profit	Concept (Monetary)	For Period	Credit	ifrs-full:GrossProfit
70	Research and development expenses	Concept (Monetary)	For Period	Debit	ifrs-full:ResearchAndDevelopmentExpense
71	Selling, general and administrative expenses	Concept (Monetary)	For Period	Debit	ifrs-full:SellingGeneralAndAdministrativeExpense
72	Other gains � net	Concept (Monetary)	For Period	Credit	ifrs-full:OtherGainsLosses
73	After tax share in profit of equity accounted investees	Concept (Monetary)	For Period	Credit	ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
74	Restructuring, integration and acquisition costs	Concept (Monetary)	For Period	Debit	cae:RestructuringIntegrationAndAcquisitionCosts
75	Operating profit	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromOperatingActivities
76	Finance expense � net	Concept (Monetary)	For Period	Credit	ifrs-full:FinanceIncomeCost
77	Earnings before income taxes	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossBeforeTax
78	Income tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
79	Earnings from continuing operations	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromContinuingOperations
80	Loss from discontinued operations	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromDiscontinuedOperations
81	Net income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
82	Attributable to:	Abstract			ifrs-full:ProfitLossAttributableToAbstract
83	Equity holders of the Company	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToOwnersOfParent
84	Non-controlling interests	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToNoncontrollingInterests
85	Earnings per share from continuing operations attributable to equity holders of the Company	Abstract			ifrs-full:EarningsPerShareAbstract
86	Basic earnings per share [abstract]	Abstract			ifrs-full:BasicEarningsPerShareAbstract
87	Basic � continuing operations (in dollars per share)	Concept (Share)	For Period		ifrs-full:BasicEarningsLossPerShareFromContinuingOperations
88	Diluted earnings per share [abstract]	Abstract			ifrs-full:DilutedEarningsPerShareAbstract
89	Diluted � continuing operations (in dollars per share)	Concept (Share)	For Period		ifrs-full:DilutedEarningsLossPerShareFromContinuingOperations
90	1003000 - Statement - Consolidated Statement of Comprehensive Income	Network	*	*	http://www.cae.com/role/ConsolidatedStatementOfComprehensiveIncome
91	Disclosure of analysis of other comprehensive income by item [table]	Table	*	*	ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemTable
92	Continuing and discontinued operations [axis]	Axis			ifrs-full:ContinuingAndDiscontinuedOperationsAxis
93	Aggregate continuing and discontinued operations [member]	Member			ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
94	Continuing operations	Member			ifrs-full:ContinuingOperationsMember
95	Discontinued operations	Member			ifrs-full:DiscontinuedOperationsMember
96	Income Statement Location [Axis]	Axis			cae:IncomeStatementLocation1Axis
97	Income Statement Location [Domain]	Member			cae:IncomeStatementLocation1Domain
98	Revenue	Member			cae:RevenueMember
99	Finance Expense Net	Member			cae:FinanceExpenseNetMember
100	Other Gains Net	Member			cae:OtherGainsNetMember
101	Disclosure of analysis of other comprehensive income by item [line items]	LineItems			ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems
102	Net income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
103	Items that may be reclassified to net income	Abstract			ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossBeforeTaxAbstract
104	Net currency translation difference on the translation of financial statements of foreign operations	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation
105	Net gain (loss) on certain long-term debts denominated in foreign currency designated as hedges of net investments in foreign operations	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsBeforeTax
106	Reclassification to income	Concept (Monetary)	For Period	Debit	ifrs-full:ReclassificationAdjustmentsOnHedgesOfNetInvestmentsInForeignOperationsBeforeTax
107	Income taxes	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToExchangeDifferencesOnTranslationOfOtherComprehensiveIncome
108	Other comprehensive income, net of tax, hedges of net investments in foreign operations	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxHedgesOfNetInvestmentsInForeignOperations
109	Effective portion of changes in fair value of derivatives designated as cash flow hedges	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnCashFlowHedgesBeforeTax
110	Reclassification to income	Concept (Monetary)	For Period	Debit	ifrs-full:ReclassificationAdjustmentsOnCashFlowHedgesBeforeTax
111	Income taxes	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome
112	Net change in cash flow hedges	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
113	Net change in fair value of available-for-sale financial asset	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxAvailableforsaleFinancialAssets
114	Share in the other comprehensive income of equity accounted investees	Concept (Monetary)	For Period	Credit	cae:ShareInTheOtherComprehensiveIncomeOfEquityAccountedInvestees
115	Reclassification to income	Concept (Monetary)	For Period	Credit	cae:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossValue
116	Share in the other comprehensive income of equity accounted investees	Concept (Monetary)	For Period	Credit	ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
117	Items that are never reclassified to net income	Abstract			ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTaxAbstract
118	Defined benefit plan remeasurements	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
119	Income taxes	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
120	Defined benefit plan remeasurements	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
121	Other comprehensive income (loss)	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncome
122	Total comprehensive income	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
123	Comprehensive income attributable to:	Abstract			ifrs-full:ComprehensiveIncomeAttributableToAbstract
124	Equity holders of the Company	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
125	Non-controlling interests	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
126	Reclassification adjustments on exchange differences on translation, before tax	Concept (Monetary)	For Period	Debit	ifrs-full:ReclassificationAdjustmentsOnExchangeDifferencesOnTranslationBeforeTax
127	1004000 - Statement - Consolidated Statement of Changes in Equity Statement	Network	*	*	http://www.cae.com/role/ConsolidatedStatementOfChangesInEquityStatement
128	Statement of changes in equity [table]	Table	*	*	ifrs-full:StatementOfChangesInEquityTable
129	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
130	Equity [member]	Member			ifrs-full:EquityMember
131	Equity attributable to owners of parent [member]	Member			ifrs-full:EquityAttributableToOwnersOfParentMember
132	Common shares	Member			ifrs-full:IssuedCapitalMember
133	Contributed surplus	Member			ifrs-full:SharePremiumMember
134	Accumulated other comprehensive income	Member			ifrs-full:AccumulatedOtherComprehensiveIncomeMember
135	Retained earnings	Member			ifrs-full:RetainedEarningsMember
136	Non-controlling interests	Member			ifrs-full:NoncontrollingInterestsMember
137	Statement of changes in equity [line items]	LineItems			ifrs-full:StatementOfChangesInEquityLineItems
138	Number of shares (in shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesOutstanding
139	Balances, beginning of year	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
140	Net income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
141	Comprehensive income [abstract]	Abstract			ifrs-full:ComprehensiveIncomeAbstract
142	Foreign currency translation	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxHedgesOfNetInvestmentsInForeignOperations
143	Net change in cash flow hedges	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
144	Net change in available-for-sale financial instruments	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxAvailableforsaleFinancialAssets
145	Share in the other comprehensive income of equity accounted investees	Concept (Monetary)	For Period	Credit	ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
146	Defined benefit plan remeasurements	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
147	Total comprehensive (loss) income	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
148	Stock options exercised (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
149	Stock options exercised	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughExerciseOfOptions
150	Optional cash purchase (in shares)	Concept (Shares)	For Period		cae:OptionalCashPurchaseShares
151	Optional cash purchase	Concept (Monetary)	For Period	Credit	cae:OptionalCashPurchaseValue
152	Common shares repurchased and cancelled (in shares)	Concept (Shares)	For Period		cae:PurchaseofTreasurySharesShares
153	Common shares repurchased and cancelled	Concept (Monetary)	For Period	Debit	ifrs-full:PurchaseOfTreasuryShares
154	Transfer upon exercise of stock options	Concept (Monetary)	For Period	Credit	cae:TransferUponExerciseOfStockOptionsValue
155	Share-based payments	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
156	Additions to non-controlling interests	Concept (Monetary)	For Period	Credit	cae:AdditionsToNoncontrollingInterests
157	Dividends to non-controlling interests	Concept (Monetary)	For Period	Credit	ifrs-full:DividendsPaidToNoncontrollingInterests
158	Stock dividends (in shares)	Concept (Shares)	For Period		cae:StockDividendIssuedDuringPeriodShares
159	Stock dividends	Concept (Monetary)	For Period	Credit	cae:StockDividendIssuedDuringPeriodValue
160	Cash dividends	Concept (Monetary)	For Period	Debit	cae:CashDividendIssuedDuringPeriodValue
161	Number of shares (in shares)	Concept (Shares)	As Of		ifrs-full:NumberOfSharesOutstanding
162	Balances, end of year	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
163	1005000 - Statement - Consolidated Statement of Cash Flows Statement	Network	*	*	http://www.cae.com/role/ConsolidatedStatementOfCashFlowsStatement
164	Implied Table	Table	*	*	implied:Table
165	Statement of cash flows [abstract]	Abstract			ifrs-full:StatementOfCashFlowsAbstract
166	Operating activities	Abstract			ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
167	Profit (loss) from continuing operations	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromContinuingOperations
168	Adjustments for:	Abstract			ifrs-full:AdjustmentsForReconcileProfitLossAbstract
169	Depreciation of property, plant and equipment	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForDepreciationExpense
170	Amortization of intangible and other assets	Concept (Monetary)	For Period	Debit	cae:AmortizationOfIntangibleAndOtherAssets
171	After tax share in profit of equity accounted investees	Concept (Monetary)	For Period	Credit	ifrs-full:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod
172	Deferred income taxes	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForDeferredTaxExpense
173	Investment tax credits	Concept (Monetary)	For Period	Credit	cae:AdjustmentforIncomeTaxCredits
174	Share-based compensation	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForSharebasedPayments
175	Defined benefit pension plans	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities
176	Amortization of other non-current liabilities	Concept (Monetary)	For Period	Credit	cae:AdjustmentforAmortizationofOtherNoncurrentLiabilities
177	Derivative financial assets and liabilities � net	Concept (Monetary)	For Period	Credit	ifrs-full:AdjustmentsForGainsLossesOnChangeInFairValueOfDerivatives
178	Gain on disposal of interest in investment	Concept (Monetary)	For Period	Credit	ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
179	Remeasurement of investment, net of reorganization and other costs	Concept (Monetary)	For Period	Credit	cae:AdjustmentforRemeasurementofInvestmentNetofReorganizationandOtherCosts
180	Other	Concept (Monetary)	For Period	Debit	ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsOperatingActivities
181	Changes in non-cash working capital	Concept (Monetary)	For Period	Debit	cae:WorkingCapital
182	Net cash provided by operating activities	Concept (Monetary)	For Period		ifrs-full:CashFlowsFromUsedInOperatingActivities
183	Investing activities	Abstract			ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
184	Business combinations, net of cash and cash equivalents acquired	Concept (Monetary)	For Period	Credit	ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
185	Net proceeds from disposal of interests in investment	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromSalesOfInterestsInAssociates
186	Capital expenditures for property, plant and equipment	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
187	Proceeds from disposal of property, plant and equipment	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromDisposalsOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets
188	Capitalized development costs	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
189	Enterprise resource planning (ERP) and other software	Concept (Monetary)	For Period	Debit	cae:PurchaseofEnterpriseResourcePlanningERPandOtherSoftware
190	Net payments to equity accounted investees	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod
191	Dividends received from equity accounted investees	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsReceivedFromInvestmentsAccountedForUsingEquityMethodClassifiedAsInvestingActivities
192	Other	Concept (Monetary)	For Period	Debit	ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities
193	Net cash used in investing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInInvestingActivities
194	Financing activities	Abstract			ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
195	Proceeds from borrowing under revolving unsecured credit facilities	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
196	Repayment of borrowing under revolving unsecured credit facilities	Concept (Monetary)	For Period	Credit	ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
197	Proceeds from long-term debt	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromNoncurrentBorrowings
198	Repayment of long-term debt	Concept (Monetary)	For Period	Credit	ifrs-full:RepaymentsOfNoncurrentBorrowings
199	Repayment of finance lease	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsOfFinanceLeaseLiabilitiesClassifiedAsFinancingActivities
200	Dividends paid	Concept (Monetary)	For Period	Credit	ifrs-full:DividendsPaidClassifiedAsFinancingActivities
201	Common stock issuance	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromIssuingShares
202	Repurchase of common shares	Concept (Monetary)	For Period	Debit	cae:StockRepurchasedandRetiredDuringPeriodValue1
203	Other	Concept (Monetary)	For Period	Debit	ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities
204	Net cash used in financing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInFinancingActivities
205	Effect of foreign exchange rate changes on cash and cash equivalents	Concept (Monetary)	For Period	Debit	ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
206	Net increase in cash and cash equivalents	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
207	Cash and cash equivalents, beginning of period	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
208	Cash and cash equivalents, end of period	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
209	Interest paid	Concept (Monetary)	For Period	Credit	cae:InterestPaid1
210	Interest received	Concept (Monetary)	For Period	Debit	cae:InterestReceived1
211	Income taxes paid	Concept (Monetary)	For Period	Credit	ifrs-full:IncomeTaxesPaidRefund
212	2101100 - Disclosure - NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	Network	*	*	http://www.cae.com/role/NatureOfOperationsAndSummaryOfSignificantAccountingPolicies
213	Implied Table	Table	*	*	implied:Table
214	General Information About Financial Statements [Abstract]	Abstract			cae:GeneralInformationAboutFinancialStatementsAbstract
215	NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
216	2104100 - Disclosure - CHANGES IN ACCOUNTING POLICIES	Network	*	*	http://www.cae.com/role/ChangesInAccountingPolicies
217	Implied Table	Table	*	*	implied:Table
218	Accounting Policies, Changes In Accounting Estimates And Errors [Abstract]	Abstract			cae:AccountingPoliciesChangesInAccountingEstimatesAndErrorsAbstract
219	CHANGES IN ACCOUNTING POLICIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory
220	2107100 - Disclosure - BUSINESS COMBINATIONS	Network	*	*	http://www.cae.com/role/BusinessCombinations
221	Implied Table	Table	*	*	implied:Table
222	Disclosure of detailed information about business combination [abstract]	Abstract			ifrs-full:DisclosureOfBusinessCombinationsAbstract
223	BUSINESS COMBINATIONS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfBusinessCombinationsExplanatory
224	2110100 - Disclosure - ACCOUNTS RECEIVABLE	Network	*	*	http://www.cae.com/role/AccountsReceivable
225	Implied Table	Table	*	*	implied:Table
226	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
227	ACCOUNTS RECEIVABLE	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
228	2113100 - Disclosure - INVENTORIES	Network	*	*	http://www.cae.com/role/Inventories
229	Implied Table	Table	*	*	implied:Table
230	Inventories [Abstract]	Abstract			cae:InventoriesAbstract
231	INVENTORIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInventoriesExplanatory
232	2116100 - Disclosure - PROPERTY, PLANT AND EQUIPMENT	Network	*	*	http://www.cae.com/role/PropertyPlantAndEquipment
233	Implied Table	Table	*	*	implied:Table
234	Property, plant and equipment [abstract]	Abstract			ifrs-full:PropertyPlantAndEquipmentAbstract
235	PROPERTY, PLANT AND EQUIPMENT	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
236	2119100 - Disclosure - INTANGIBLE ASSETS	Network	*	*	http://www.cae.com/role/IntangibleAssets
237	Implied Table	Table	*	*	implied:Table
238	Intangible Assets [Abstract]	Abstract			cae:IntangibleAssetsAbstract
239	INTANGIBLE ASSETS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfIntangibleAssetsExplanatory
240	2122100 - Disclosure - OTHER ASSETS	Network	*	*	http://www.cae.com/role/OtherAssets
241	Implied Table	Table	*	*	implied:Table
242	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
243	OTHER ASSETS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherAssetsExplanatory
244	2125100 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED LIABILITIES	Network	*	*	http://www.cae.com/role/AccountsPayableAndAccruedLiabilities
245	Implied Table	Table	*	*	implied:Table
246	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
247	ACCOUNTS PAYABLE AND ACCRUED LIABILITIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
248	2128100 - Disclosure - CONTRACTS IN PROGRESS	Network	*	*	http://www.cae.com/role/ContractsInProgress
249	Implied Table	Table	*	*	implied:Table
250	Recognised Revenue From Construction Contracts [Abstract]	Abstract			cae:RecognisedRevenueFromConstructionContractsAbstract
251	CONTRACTS IN PROGRESS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRecognisedRevenueFromConstructionContractsExplanatory
252	2131100 - Disclosure - PROVISIONS	Network	*	*	http://www.cae.com/role/Provisions
253	Implied Table	Table	*	*	implied:Table
254	Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]	Abstract			cae:OtherProvisionsContingentLiabilitiesAndContingentAssetsAbstract
255	PROVISIONS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory
256	2134100 - Disclosure - DEBT FACILITIES	Network	*	*	http://www.cae.com/role/DebtFacilities
257	Implied Table	Table	*	*	implied:Table
258	Debt and Financing Obligations [Abstract]	Abstract			cae:DebtandFinancingObligationsAbstract
259	DEBT FACILITIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfBorrowingsExplanatory
260	2137100 - Disclosure - GOVERNMENT PARTICIPATION	Network	*	*	http://www.cae.com/role/GovernmentParticipation
261	Implied Table	Table	*	*	implied:Table
262	Government Grants [Abstract]	Abstract			cae:GovernmentGrantsAbstract
263	GOVERNMENT PARTICIPATION	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfGovernmentGrantsExplanatory
264	2140100 - Disclosure - EMPLOYEE BENEFITS OBLIGATIONS	Network	*	*	http://www.cae.com/role/EmployeeBenefitsObligations
265	Implied Table	Table	*	*	implied:Table
266	Disclosure of share-based payments arrangements [Abstract]	Abstract			cae:DisclosureofsharebasedpaymentsarrangementsAbstract
267	EMPLOYEE BENEFITS OBLIGATIONS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
268	2143100 - Disclosure - DEFERRED GAINS AND OTHER NON-CURRENT LIABILITIES	Network	*	*	http://www.cae.com/role/DeferredGainsAndOtherNonCurrentLiabilities
269	Implied Table	Table	*	*	implied:Table
270	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
271	DEFERRED GAINS AND OTHER NON-CURRENT LIABILITIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherNoncurrentLiabilitiesExplanatory
272	2146100 - Disclosure - INCOME TAXES	Network	*	*	http://www.cae.com/role/IncomeTaxes
273	Implied Table	Table	*	*	implied:Table
274	Income Tax [Abstract]	Abstract			cae:IncomeTaxAbstract
275	INCOME TAXES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfIncomeTaxExplanatory
276	2149100 - Disclosure - SHARE CAPITAL, EARNINGS PER SHARE AND DIVIDENDS	Network	*	*	http://www.cae.com/role/ShareCapitalEarningsPerShareAndDividends
277	Implied Table	Table	*	*	implied:Table
278	Share Capital, Reserves And Other Equity Interest [Abstract]	Abstract			cae:ShareCapitalReservesAndOtherEquityInterestAbstract
279	SHARE CAPITAL, EARNINGS PER SHARE AND DIVIDENDS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
280	2152100 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME	Network	*	*	http://www.cae.com/role/AccumulatedOtherComprehensiveIncome
281	Implied Table	Table	*	*	implied:Table
282	Disclosure of analysis of other comprehensive income by item [abstract]	Abstract			ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemAbstract
283	ACCUMULATED OTHER COMPREHENSIVE INCOME	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory
284	2155100 - Disclosure - EMPLOYEE COMPENSATION	Network	*	*	http://www.cae.com/role/EmployeeCompensation
285	Implied Table	Table	*	*	implied:Table
286	Employee Benefits [Abstract]	Abstract			cae:EmployeeBenefitsAbstract
287	EMPLOYEE COMPENSATION	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
288	2158100 - Disclosure - IMPAIRMENT OF NONFINANCIAL ASSETS	Network	*	*	http://www.cae.com/role/ImpairmentOfNonfinancialAssets
289	Implied Table	Table	*	*	implied:Table
290	Disclosure of Impairment of Assets [Abstract]	Abstract			cae:DisclosureofImpairmentofAssetsAbstract
291	IMPAIRMENT OF NONFINANCIAL ASSETS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfImpairmentOfAssetsExplanatory
292	2161100 - Disclosure - OTHER GAINS - NET	Network	*	*	http://www.cae.com/role/OtherGainsNet
293	Implied Table	Table	*	*	implied:Table
294	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
295	OTHER GAINS - NET	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory
296	2164100 - Disclosure - FINANCE EXPENSE - NET	Network	*	*	http://www.cae.com/role/FinanceExpenseNet
297	Implied Table	Table	*	*	implied:Table
298	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
299	FINANCE EXPENSE - NET	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinanceIncomeExpenseExplanatory
300	2167100 - Disclosure - SHARE-BASED PAYMENTS	Network	*	*	http://www.cae.com/role/ShareBasedPayments
301	Implied Table	Table	*	*	implied:Table
302	Share-based Payment Arrangements [Abstract] [Abstract]	Abstract			cae:SharebasedPaymentArrangementsAbstractAbstract
303	SHARE-BASED PAYMENTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory
304	2170100 - Disclosure - SUPPLEMENTARY CASH FLOWS INFORMATION	Network	*	*	http://www.cae.com/role/SupplementaryCashFlowsInformation
305	Implied Table	Table	*	*	implied:Table
306	Cash Flow Statement [Abstract]	Abstract			cae:CashFlowStatementAbstract
307	SUPPLEMENTARY CASH FLOWS INFORMATION	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCashFlowStatementExplanatory
308	2173100 - Disclosure - CONTINGENCIES	Network	*	*	http://www.cae.com/role/Contingencies
309	Implied Table	Table	*	*	implied:Table
310	Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]	Abstract			cae:OtherProvisionsContingentLiabilitiesAndContingentAssetsAbstract
311	CONTINGENCIES	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfContingentLiabilitiesExplanatory
312	2176100 - Disclosure - COMMITMENTS	Network	*	*	http://www.cae.com/role/Commitments
313	Implied Table	Table	*	*	implied:Table
314	Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]	Abstract			cae:OtherProvisionsContingentLiabilitiesAndContingentAssetsAbstract
315	COMMITMENTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCommitmentsExplanatory
316	2179100 - Disclosure - CAPITAL RISK MANAGEMENT	Network	*	*	http://www.cae.com/role/CapitalRiskManagement
317	Implied Table	Table	*	*	implied:Table
318	Capital Risk Management [Abstract]	Abstract			cae:CapitalRiskManagementAbstract
319	CAPITAL RISK MANAGEMENT	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory
320	2182100 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS	Network	*	*	http://www.cae.com/role/FairValueOfFinancialInstruments
321	Implied Table	Table	*	*	implied:Table
322	Fair Value Measurement [Abstract]	Abstract			cae:FairValueMeasurementAbstract
323	FAIR VALUE OF FINANCIAL INSTRUMENTS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFairValueMeasurementExplanatory
324	2185100 - Disclosure - FINANCIAL RISK MANAGEMENT	Network	*	*	http://www.cae.com/role/FinancialRiskManagement
325	Implied Table	Table	*	*	implied:Table
326	Disclosure of notes and other explanatory information [Abstract]	Abstract			cae:DisclosureofnotesandotherexplanatoryinformationAbstract
327	FINANCIAL RISK MANAGEMENT	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinancialRiskManagementExplanatory
328	2188100 - Disclosure - OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION	Network	*	*	http://www.cae.com/role/OperatingSegmentsAndGeographicInformation
329	Implied Table	Table	*	*	implied:Table
330	Disclosure of operating segments [abstract]	Abstract			ifrs-full:DisclosureOfOperatingSegmentsAbstract
331	OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
332	2191100 - Disclosure - RELATED PARTY RELATIONSHIPS	Network	*	*	http://www.cae.com/role/RelatedPartyRelationships
333	Implied Table	Table	*	*	implied:Table
334	Related Party [Abstract]	Abstract			cae:RelatedPartyAbstract
335	RELATED PARTY RELATIONSHIPS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRelatedPartyExplanatory
336	2194100 - Disclosure - RELATED PARTY TRANSACTIONS	Network	*	*	http://www.cae.com/role/RelatedPartyTransactions
337	Implied Table	Table	*	*	implied:Table
338	Disclosure of related party transactions [Abstract]	Abstract			cae:DisclosureofrelatedpartytransactionsAbstract
339	RELATED PARTY TRANSACTIONS	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRelatedPartyExplanatory
340	2201201 - Disclosure - NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	Network	*	*	http://www.cae.com/role/NatureOfOperationsAndSummaryOfSignificantAccountingPoliciesPolicies
341	Implied Table	Table	*	*	implied:Table
342	General Information About Financial Statements [Abstract]	Abstract			cae:GeneralInformationAboutFinancialStatementsAbstract
343	Statement of IFRS compliance	Concept (Text Block (HTML))	For Period		ifrs-full:StatementOfIFRSCompliance
344	Basis of preparation	Concept (Text Block (HTML))	For Period		ifrs-full:ExplanationOfMeasurementBasesUsedInPreparingFinancialStatements
345	Functional currency	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory
346	Subsidiaries	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForSubsidiariesExplanatory
347	Joint arrangements	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForInvestmentsInJointVentures
348	Business combinations	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory
349	Non-controlling interests	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForTransactionsWithNoncontrollingInterestsExplanatory
350	Financial instruments	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory
351	Financial instruments at fair value through profit and loss	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory
352	Loans and receivables	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForLoansAndReceivablesExplanatory
353	Available-for-sale financial assets	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForAvailableforsaleFinancialAssetsExplanatory
354	Other financial liabilities	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory
355	Transaction costs	Concept (Text Block (HTML))	For Period		cae:DescriptionOfAccountingPolicyForTransactionCostsPolicyTextBlock
356	Offsetting of financial assets and financial liabilities	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForOffsettingOfFinancialInstrumentsExplanatory
357	Fair value hierarchy transfers	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory
358	Derivative financial instruments and hedge accounting	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory
359	Derecognition of financial instruments	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForDerecognitionOfFinancialInstrumentsExplanatory
360	Foreign currency translation	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
361	Cash and cash equivalents	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
362	Accounts receivable	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherReceivablesExplanatory
363	Inventories	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
364	Property, plant and equipment	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
365	Leases	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
366	Goodwill	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForGoodwillExplanatory
367	Research and development	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForResearchAndDevelopmentExpenseExplanatory
368	Other intangible assets	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory
369	Impairment of non-financial assets	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory
370	Borrowing costs	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForBorrowingCostsExplanatory
371	Restricted cash	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForRestrictedCashAndCashEquivalentsExplanatory
372	Deferred financing costs	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForFinanceCostsExplanatory
373	Accounts payable and accrued liabilities	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory
374	Provisions	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
375	Long-term debt	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForBorrowingsExplanatory
376	Share capital	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
377	Revenue recognition	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
378	Employee benefits	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
379	Termination benefits	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForTerminationBenefits
380	Share-based payment transactions	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
381	Income tax	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
382	Investment tax credits	Concept (Text Block (HTML))	For Period		cae:DescriptionOfAccountingPolicyForInvestmentTaxCreditsPolicyTextBlock
383	Earnings per share	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
384	Government participation	Concept (Text Block (HTML))	For Period		cae:DescriptionOfGovernmentParticipationPolicyTextBlock
385	Use of judgements, estimates and assumptions	Concept (Text Block (HTML))	For Period		cae:UseofEstimatesPolicy1PolicyTextBlock
386	Government royalty repayments	Concept (Text Block (HTML))	For Period		cae:DisclosureOfGovernmentRoyaltiesRepaymentsPolicyTextBlock
387	Changes in accounting policies	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfInitialApplicationOfStandardsOrInterpretations
388	2301302 - Disclosure - NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	Network	*	*	http://www.cae.com/role/NatureOfOperationsAndSummaryOfSignificantAccountingPoliciesTables
389	Implied Table	Table	*	*	implied:Table
390	General Information About Financial Statements [Abstract]	Abstract			cae:GeneralInformationAboutFinancialStatementsAbstract
391	Disclosure of estimated useful lives of property, plant and equipment	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
392	Disclosure of estimated useful lives of intangible assets	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory
393	2304301 - Disclosure - CHANGES IN ACCOUNTING POLICIES (Tables)	Network	*	*	http://www.cae.com/role/ChangesInAccountingPoliciesTables
394	Implied Table	Table	*	*	implied:Table
395	Accounting Policies, Changes In Accounting Estimates And Errors [Abstract]	Abstract			cae:AccountingPoliciesChangesInAccountingEstimatesAndErrorsAbstract
396	Disclosure of expected impact of initial application of new standards	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
397	2307301 - Disclosure - BUSINESS COMBINATIONS (Tables)	Network	*	*	http://www.cae.com/role/BusinessCombinationsTables
398	Implied Table	Table	*	*	implied:Table
399	Disclosure of detailed information about business combination [abstract]	Abstract			ifrs-full:DisclosureOfBusinessCombinationsAbstract
400	Disclosure of detailed information about business combinations	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory
401	2310301 - Disclosure - ACCOUNTS RECEIVABLE (Tables)	Network	*	*	http://www.cae.com/role/AccountsReceivableTables
402	Implied Table	Table	*	*	implied:Table
403	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
404	Disclosure of accounts receivable	Concept (Text Block (HTML))	For Period		cae:DisclosureOfTradeAndOtherCurrentReceivablesTableTextBlock
405	Schedule of changes in allowance for doubtful accounts	Concept (Text Block (HTML))	For Period		cae:DisclosureOfAllowanceAccountForTradeReceivablesTableTextBlock
406	2313301 - Disclosure - INVENTORIES (Tables)	Network	*	*	http://www.cae.com/role/InventoriesTables
407	Implied Table	Table	*	*	implied:Table
408	Inventories [Abstract]	Abstract			cae:InventoriesAbstract
409	Schedule of inventory	Concept (Text Block (HTML))	For Period		cae:ScheduleOfInventoryExplanatoryTableTextBlock
410	2316301 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Tables)	Network	*	*	http://www.cae.com/role/PropertyPlantAndEquipmentTables
411	Implied Table	Table	*	*	implied:Table
412	Property, plant and equipment [abstract]	Abstract			ifrs-full:PropertyPlantAndEquipmentAbstract
413	Disclosure of detailed information about property, plant and equipment	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
414	Disclosure of future minimum lease payments receivable under operating lease	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorExplanatory
415	Disclosure of recognised finance lease as asset by lessee	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRecognisedFinanceLeaseAsAssetsByLesseeExplanatory
416	2319301 - Disclosure - INTANGIBLE ASSETS (Tables)	Network	*	*	http://www.cae.com/role/IntangibleAssetsTables
417	Implied Table	Table	*	*	implied:Table
418	Intangible Assets [Abstract]	Abstract			cae:IntangibleAssetsAbstract
419	Disclosure of reconciliation of changes in intangible assets and goodwill	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory
420	2322301 - Disclosure - OTHER ASSETS (Tables)	Network	*	*	http://www.cae.com/role/OtherAssetsTables
421	Implied Table	Table	*	*	implied:Table
422	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
423	Schedule of other Non-current assets	Concept (Text Block (HTML))	For Period		cae:ScheduleofOtherNoncurrentAssetsTableTextBlock
424	Disclosure of finance lease by lessor	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorExplanatory
425	2325301 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Tables)	Network	*	*	http://www.cae.com/role/AccountsPayableAndAccruedLiabilitiesTables
426	Implied Table	Table	*	*	implied:Table
427	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
428	Disclosure Of accounts payable and other liabilities	Concept (Text Block (HTML))	For Period		cae:DisclosureOfAccountsPayableAndOtherLiabilitiesTableTextBlock
429	2328301 - Disclosure - CONTRACTS IN PROGRESS (Tables)	Network	*	*	http://www.cae.com/role/ContractsInProgressTables
430	Implied Table	Table	*	*	implied:Table
431	Recognised Revenue From Construction Contracts [Abstract]	Abstract			cae:RecognisedRevenueFromConstructionContractsAbstract
432	Disclosure of revenue from contracts with customers	Concept (Text Block (HTML))	For Period		cae:DisclosureOfRecognisedRevenueFromConstructionContractsExplanatoryTableTextBlock
433	2331301 - Disclosure - PROVISIONS (Tables)	Network	*	*	http://www.cae.com/role/ProvisionsTables
434	Implied Table	Table	*	*	implied:Table
435	Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]	Abstract			cae:OtherProvisionsContingentLiabilitiesAndContingentAssetsAbstract
436	Schedule of provisions	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherProvisionsExplanatory
437	2334301 - Disclosure - DEBT FACILITIES (Tables)	Network	*	*	http://www.cae.com/role/DebtFacilitiesTables
438	Implied Table	Table	*	*	implied:Table
439	Debt and Financing Obligations [Abstract]	Abstract			cae:DebtandFinancingObligationsAbstract
440	Disclosure of detailed information about borrowings	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
441	Disclosure of reconciliation of liabilities arising from financing activities	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatory
442	Disclosure of maturity analysis for non-derivate financial liabilities	Concept (Text Block (HTML))	For Period		ifrs-full:MaturityAnalysisForNonderivativeFinancialLiabilities
443	2337301 - Disclosure - GOVERNMENT PARTICIPATION (Tables)	Network	*	*	http://www.cae.com/role/GovernmentParticipationTables
444	Implied Table	Table	*	*	implied:Table
445	Government Grants [Abstract]	Abstract			cae:GovernmentGrantsAbstract
446	Disclosure of detailed Information about government participation	Concept (Text Block (HTML))	For Period		cae:DisclosureOfDetailedInformationAboutGovernmentGrantsTableTextBlock
447	2340301 - Disclosure - EMPLOYEE BENEFITS OBLIGATIONS (Tables)	Network	*	*	http://www.cae.com/role/EmployeeBenefitsObligationsTables
448	Implied Table	Table	*	*	implied:Table
449	Disclosure of share-based payments arrangements [Abstract]	Abstract			cae:DisclosureofsharebasedpaymentsarrangementsAbstract
450	Disclosure of net defined benefit liability (asset)	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
451	Disclosure of additional information about defined benefit plans	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfAdditionalInformationAboutDefinedBenefitPlansExplanatory
452	Disclosure of fair value of plan assets	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFairValueOfPlanAssetsExplanatory
453	Assumptions for defined benefit plans	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory
454	Disclosure of sensitivity analysis for actuarial assumptions	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
455	Expected future employer contribution	Concept (Text Block (HTML))	For Period		cae:ExpectedfutureemployercontributionTableTextBlock
456	2343301 - Disclosure - DEFERRED GAINS AND OTHER NON-CURRENT LIABILITIES (Tables)	Network	*	*	http://www.cae.com/role/DeferredGainsAndOtherNonCurrentLiabilitiesTables
457	Implied Table	Table	*	*	implied:Table
458	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
459	Schedule of other noncurrent liabilities	Concept (Text Block (HTML))	For Period		cae:OtherNoncurrentLiabilities1TableTextBlock
460	2346301 - Disclosure - INCOME TAXES (Tables)	Network	*	*	http://www.cae.com/role/IncomeTaxesTables
461	Implied Table	Table	*	*	implied:Table
462	Income Tax [Abstract]	Abstract			cae:IncomeTaxAbstract
463	Effective Income Tax Rate Reconciliation	Concept (Text Block (HTML))	For Period		cae:ScheduleofEffectiveIncomeTaxRateReconciliationTableTextBlock
464	Schedule of Components of Income Tax Expense (Benefit)	Concept (Text Block (HTML))	For Period		cae:ScheduleofComponentsofIncomeTaxExpenseBenefitTableTextBlock
465	Disclosure of temporary difference, unused tax losses and unused tax credits	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
466	2349301 - Disclosure - SHARE CAPITAL, EARNINGS PER SHARE AND DIVIDENDS (Tables)	Network	*	*	http://www.cae.com/role/ShareCapitalEarningsPerShareAndDividendsTables
467	Implied Table	Table	*	*	implied:Table
468	Share Capital, Reserves And Other Equity Interest [Abstract]	Abstract			cae:ShareCapitalReservesAndOtherEquityInterestAbstract
469	Earnings per share	Concept (Text Block (HTML))	For Period		ifrs-full:EarningsPerShareExplanatory
470	2352301 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables)	Network	*	*	http://www.cae.com/role/AccumulatedOtherComprehensiveIncomeTables
471	Implied Table	Table	*	*	implied:Table
472	Disclosure of analysis of other comprehensive income by item [abstract]	Abstract			ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemAbstract
473	Analysis of other comprehensive income	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory
474	2355301 - Disclosure - EMPLOYEE COMPENSATION (Tables)	Network	*	*	http://www.cae.com/role/EmployeeCompensationTables
475	Implied Table	Table	*	*	implied:Table
476	Employee Benefits [Abstract]	Abstract			cae:EmployeeBenefitsAbstract
477	Analysis of employee compensation	Concept (Text Block (HTML))	For Period		cae:AnalysisOfEmployeeCompensationTableTextBlock
478	2358301 - Disclosure - IMPAIRMENT OF NONFINANCIAL ASSETS (Tables)	Network	*	*	http://www.cae.com/role/ImpairmentOfNonfinancialAssetsTables
479	Implied Table	Table	*	*	implied:Table
480	Disclosure of Impairment of Assets [Abstract]	Abstract			cae:DisclosureofImpairmentofAssetsAbstract
481	Disclosure of reconciliation of changes in goodwill	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillExplanatory
482	2361301 - Disclosure - OTHER GAINS - NET (Tables)	Network	*	*	http://www.cae.com/role/OtherGainsNetTables
483	Implied Table	Table	*	*	implied:Table
484	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
485	Schedule of other gains	Concept (Text Block (HTML))	For Period		cae:ScheduleofOtherGainsTableTextBlock
486	2364301 - Disclosure - FINANCE EXPENSE - NET (Tables)	Network	*	*	http://www.cae.com/role/FinanceExpenseNetTables
487	Implied Table	Table	*	*	implied:Table
488	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
489	Schedule of finance expense - net	Concept (Text Block (HTML))	For Period		cae:DisclosureOfFinanceIncomeCostExplanatoryTableTextBlock
490	2367301 - Disclosure - SHARE-BASED PAYMENTS (Tables)	Network	*	*	http://www.cae.com/role/ShareBasedPaymentsTables
491	Implied Table	Table	*	*	implied:Table
492	Share-based Payment Arrangements [Abstract]	Abstract			cae:SharebasedPaymentArrangementsAbstract
493	Explanation of effect of share-based payments on entity's profit or loss	Concept (Text Block (HTML))	For Period		ifrs-full:ExplanationOfEffectOfSharebasedPaymentsOnProfitOrLoss
494	Disclosure of number and weighted average exercise prices of share options	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory
495	Disclosure of range of exercise prices of outstanding share options	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatory
496	Disclosure of indirect measurement of fair value of goods or services received, other equity instruments granted during period	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedShareOptionsGrantedDuringPeriodExplanatory
497	Disclosure of number and weighted average exercise prices of other equity instruments	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory
498	Disclosure Of Annual TSR Relative Performance Index	Concept (Text Block (HTML))	For Period		cae:DisclosureOfAnnualTSRRelativePerformanceIndexTableTextBlock
499	2370301 - Disclosure - SUPPLEMENTARY CASH FLOWS INFORMATION (Tables)	Network	*	*	http://www.cae.com/role/SupplementaryCashFlowsInformationTables
500	Implied Table	Table	*	*	implied:Table
501	Cash Flow Statement [Abstract]	Abstract			cae:CashFlowStatementAbstract
502	Analysis of Non-Cash Working Capital	Concept (Text Block (HTML))	For Period		cae:AnalysisofNonCashWorkingCapitalTableTextBlock
503	2376301 - Disclosure - COMMITMENTS (Tables)	Network	*	*	http://www.cae.com/role/CommitmentsTables
504	Implied Table	Table	*	*	implied:Table
505	Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]	Abstract			cae:OtherProvisionsContingentLiabilitiesAndContingentAssetsAbstract
506	Disclosure of maturity analysis of operating lease payments	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsExplanatory
507	Contractual Obligation, Fiscal Year Maturity Schedule	Concept (Text Block (HTML))	For Period		cae:ContractualObligationFiscalYearMaturitySchedule1TableTextBlock
508	2379301 - Disclosure - CAPITAL RISK MANAGEMENT (Tables)	Network	*	*	http://www.cae.com/role/CapitalRiskManagementTables
509	Implied Table	Table	*	*	implied:Table
510	Capital Risk Management [Abstract]	Abstract			cae:CapitalRiskManagementAbstract
511	Disclosure of detailed information about capital risk management	Concept (Text Block (HTML))	For Period		cae:DisclosureofDetailedInformationAboutCapitalRiskManagementTableTextBlock
512	2382301 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)	Network	*	*	http://www.cae.com/role/FairValueOfFinancialInstrumentsTables
513	Implied Table	Table	*	*	implied:Table
514	Fair Value Measurement [Abstract]	Abstract			cae:FairValueMeasurementAbstract
515	Disclosure of fair value measurement of assets	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFairValueMeasurementOfAssetsExplanatory
516	Disclosure of fair value measurement of liabilities	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesExplanatory
517	Disclosure of changes in level 3 financial instruments	Concept (Text Block (HTML))	For Period		cae:DisclosureofChangesinLevel3FinancialInstrumentsTableTextBlock
518	2385301 - Disclosure - FINANCIAL RISK MANAGEMENT (Tables)	Network	*	*	http://www.cae.com/role/FinancialRiskManagementTables
519	Implied Table	Table	*	*	implied:Table
520	Disclosure of notes and other explanatory information [Abstract]	Abstract			cae:DisclosureofnotesandotherexplanatoryinformationAbstract
521	Disclosure of how entity manages liquidity risk	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfManagingLiquidityRisk
522	Disclosure of foreign currency risk exposure	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCreditRiskExposureExplanatory
523	Sensitivity analysis for types of market risk	Concept (Text Block (HTML))	For Period		ifrs-full:SensitivityAnalysisForEachTypeOfMarketRisk
524	Disclosure of letters of credit and guarantees	Concept (Text Block (HTML))	For Period		cae:DisclosureOfLettersOfCreditAndGuaranteesTableTextBlock
525	2388301 - Disclosure - OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION (Tables)	Network	*	*	http://www.cae.com/role/OperatingSegmentsAndGeographicInformationTables
526	Implied Table	Table	*	*	implied:Table
527	Disclosure of operating segments [abstract]	Abstract			ifrs-full:DisclosureOfOperatingSegmentsAbstract
528	Results by segment	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOperatingSegmentsExplanatory
529	Products and services information	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfProductsAndServicesExplanatory
530	Geographic information	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfGeographicalAreasExplanatory
531	2391301 - Disclosure - RELATED PARTY RELATIONSHIPS (Tables)	Network	*	*	http://www.cae.com/role/RelatedPartyRelationshipsTables
532	Implied Table	Table	*	*	implied:Table
533	Related Party [Abstract]	Abstract			cae:RelatedPartyAbstract
534	Disclosure of interests in subsidiaries	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory
535	Disclosure of interests in joint arrangements	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInterestsInJointArrangementsExplanatory
536	2394301 - Disclosure - RELATED PARTY TRANSACTIONS (Tables)	Network	*	*	http://www.cae.com/role/RelatedPartyTransactionsTables
537	Implied Table	Table	*	*	implied:Table
538	Disclosure of related party transactions [Abstract]	Abstract			cae:DisclosureofrelatedpartytransactionsAbstract
539	Disclosure of transactions between related parties	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
540	2401403 - Disclosure - NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	Network	*	*	http://www.cae.com/role/NatureOfOperationsAndSummaryOfSignificantAccountingPoliciesDetails
541	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
542	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
543	Property, plant and equipment	Member			ifrs-full:PropertyPlantAndEquipmentMember
544	Buildings and improvements	Member			ifrs-full:BuildingsMember
545	Simulators	Member			cae:SimulatorsMember
546	Machinery and equipment	Member			ifrs-full:MachineryMember
547	Aircraft	Member			ifrs-full:AircraftMember
548	Aircraft engines	Member			cae:AircraftEnginesMember
549	Classes of intangible assets other than goodwill [axis]	Axis			ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
550	Intangible assets other than goodwill [member]	Member			ifrs-full:IntangibleAssetsOtherThanGoodwillMember
551	Capitalized development costs	Member			cae:CapitalizeddevelopmentcostsMember
552	Customer relationships	Member			ifrs-full:CustomerrelatedIntangibleAssetsMember
553	ERP and other software	Member			ifrs-full:ComputerSoftwareMember
554	Technology	Member			ifrs-full:TechnologybasedIntangibleAssetsMember
555	Other intangible assets	Member			ifrs-full:OtherIntangibleAssetsMember
556	Classes of financial instruments [axis]	Axis			ifrs-full:ClassesOfFinancialInstrumentsAxis
557	Financial instruments, class [member]	Member			ifrs-full:ClassesOfFinancialInstrumentsMember
558	Government royalties	Member			cae:GovernmentRoyaltiesMember
559	Range [axis]	Axis			ifrs-full:RangeAxis
560	Ranges [member]	Member			ifrs-full:RangesMember
561	Bottom of range	Member			ifrs-full:BottomOfRangeMember
562	Top of range	Member			ifrs-full:TopOfRangeMember
563	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
564	Number of operating segments	Concept (Integer)	For Period		cae:NumberOfOperatingSegments1
565	Depreciation method, property, plant and equipment	Concept (Text/String)	For Period		ifrs-full:DepreciationMethodPropertyPlantAndEquipment
566	Amortization rate, property, plant and equipment	Concept (Percent)	For Period		cae:DepreciationRatesPropertyPlantAndEquipment
567	Useful lives, property, plant and equipment	Concept (xbrli:durationItemType)	For Period		cae:UsefulLivesPropertyPlantAndEquipment
568	Utilization rate, property plant and equipment	Concept (xbrli:durationItemType)	For Period		cae:UtilizationRatePropertyPlantAndEquipment
569	Amortisation method, intangible assets other than goodwill	Concept (Text/String)	For Period		ifrs-full:AmortisationMethodIntangibleAssetsOtherThanGoodwill
570	Useful lives, intangible assets other than goodwill	Concept (xbrli:durationItemType)	For Period		cae:UsefulLivesIntangibleAssetsOtherThanGoodwill
571	Growth rate used to extrapolate cash flow projections	Concept (Percent)	As Of		ifrs-full:DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections
572	Discount rate used in current estimate of value in use	Concept (Percent)	As Of		ifrs-full:DescriptionOfDiscountRatesUsedInCurrentEstimateOfValueInUse
573	Increase In royalty obligations, impact of 1% change in growth rate	Concept (Monetary)	As Of	Credit	cae:IncreaseDecreaseInRoyaltyObligationImpactOfOnePercentChangeInGrowthRate
574	Minimum finance lease payments payable	Concept (Monetary)	As Of	Credit	ifrs-full:MinimumFinanceLeasePaymentsPayable
575	2404402 - Disclosure - CHANGES IN ACCOUNTING POLICIES (Details)	Network	*	*	http://www.cae.com/role/ChangesInAccountingPoliciesDetails
576	Disclosure of initial application of standards or interpretations [table]	Table	*	*	ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsTable
577	Scenario [Axis]	Axis			cae:ScenarioAxis
578	Scenario [Domain]	Member			cae:ScenarioDomain
579	As Reported	Member			cae:AsReportedMember
580	As Restated	Member			cae:AsRestatedMember
581	Retrospective application and retrospective restatement [axis]	Axis			ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
582	Currently stated [member]	Member			ifrs-full:RestatedMember
583	Previously stated	Member			ifrs-full:PreviouslyStatedMember
584	Increase (decrease) due to application of IFRS 15	Member			ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
585	Disclosure of initial application of standards or interpretations [line items]	LineItems			ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
586	Current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssets
587	Non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentAssets
588	Assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
589	Current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilities
590	Non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentLiabilities
591	Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
592	Equity attributable to owners of parent	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAttributableToOwnersOfParent
593	Non-controlling interests	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
594	Equity	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
595	Revenue	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
596	Operating profit	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromOperatingActivities
597	Finance costs	Concept (Monetary)	For Period	Debit	ifrs-full:FinanceCosts
598	2407402 - Disclosure - BUSINESS COMBINATIONS (Details)	Network	*	*	http://www.cae.com/role/BusinessCombinationsDetails
599	Disclosure of transactions recognised separately from acquisition of assets and assumption of liabilities in business combination [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombinationTable
600	Classes of intangible assets other than goodwill [axis]	Axis			ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
601	Intangible assets other than goodwill [member]	Member			ifrs-full:IntangibleAssetsOtherThanGoodwillMember
602	Customer relationships	Member			ifrs-full:CustomerrelatedIntangibleAssetsMember
603	Business combinations [axis]	Axis			ifrs-full:BusinessCombinationsAxis
604	Entity's total for business combinations [member]	Member			ifrs-full:EntitysTotalForBusinessCombinationsMember
605	Portfolio Of Training Assets	Member			cae:PortfolioOfTrainingAssetsMember
606	Asian Aviation Centre of Excellence Sdn. Bhd.	Member			cae:AsianAviationCentreofExcellenceSdn.Bhd.Member
607	Joint ventures [axis]	Axis			ifrs-full:JointVenturesAxis
608	Entity's total for joint ventures [member]	Member			ifrs-full:EntitysTotalForJointVenturesMember
609	Philippine Academy for Aviation Training Inc	Member			cae:PhilippineAcademyofAviationTrainingMember
610	Disclosure of transactions recognised separately from acquisition of assets and assumption of liabilities in business combination [line items]	LineItems			ifrs-full:DisclosureOfTransactionsRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombinationLineItems
611	Cash transferred	Concept (Monetary)	As Of	Credit	ifrs-full:CashTransferred
612	Property, plant and equipment	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
613	Goodwill recognised as of acquisition date	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
614	Non-current assets	Concept (Monetary)	As Of	Debit	cae:OtherNoncurrentAssetsRecognisedAsOfAcquisitionDate
615	Non-current liabilities recognised as of acquisition date	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentLiabilitiesRecognisedAsOfAcquisitionDate
616	Percentage of voting equity interests acquired	Concept (Percent)	As Of		ifrs-full:PercentageOfVotingEquityInterestsAcquired
617	Contingent consideration arising on business combinations	Concept (Monetary)	As Of	Credit	ifrs-full:ContingentLiabilitiesRecognisedInBusinessCombination
618	Proportion of ownership interest in joint venture	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInJointVenture
619	Proportion of ownership interest in subsidiary	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInSubsidiary
620	Number of training centre	Concept (Integer)	For Period		cae:NumberOfTrainingCentre
621	Identifiable assets acquired	Concept (Monetary)	As Of	Debit	ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
622	Intangible assets other than goodwill	Concept (Monetary)	As Of	Debit	ifrs-full:IntangibleAssetsOtherThanGoodwill
623	Goodwill expected to be not deductible for tax purposes	Concept (Monetary)	As Of	Debit	cae:GoodwillExpectedToBeNotDeductibleForTaxPurposes
624	Fair value of acquired receivables	Concept (Monetary)	As Of	Debit	ifrs-full:FairValueOfAcquiredReceivables
625	2407403 - Disclosure - BUSINESS COMBINATIONS - Net Assets and Liabilities from Acquisition (Details)	Network	*	*	http://www.cae.com/role/BusinessCombinationsNetAssetsAndLiabilitiesFromAcquisitionDetails
626	Disclosure of detailed information about business combination [table]	Table	*	*	ifrs-full:DisclosureOfBusinessCombinationsTable
627	Business combinations [axis]	Axis			ifrs-full:BusinessCombinationsAxis
628	Entity's total for business combinations [member]	Member			ifrs-full:EntitysTotalForBusinessCombinationsMember
629	Asian Aviation Centre of Excellence Sdn. Bhd.	Member			cae:AsianAviationCentreofExcellenceSdn.Bhd.Member
630	Disclosure of detailed information about business combination [line items]	LineItems			ifrs-full:DisclosureOfBusinessCombinationsLineItems
631	Current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssetsRecognisedAsOfAcquisitionDate
632	Current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilitiesRecognisedAsOfAcquisitionDate
633	Property, plant and equipment	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
634	Investment in equity accounted investee	Concept (Monetary)	As Of	Debit	cae:InvestmentInEquityAccountedInvesteeRecognisedAsOfAcquisitionDate
635	Intangible assets	Concept (Monetary)	As Of	Debit	ifrs-full:IdentifiableIntangibleAssetsRecognisedAsOfAcquisitionDate
636	Deferred tax	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilitiesRecognisedAsOfAcquisitionDate
637	Non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentLiabilitiesRecognisedAsOfAcquisitionDate
638	Fair value of net assets acquired, excluding cash and cash equivalents	Concept (Monetary)	As Of	Debit	ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
639	Cash and cash equivalents acquired	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalentsRecognisedAsOfAcquisitionDate
640	Total purchase consideration	Concept (Monetary)	As Of	Credit	ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
641	Fair value of long-term contingent cash consideration payable	Concept (Monetary)	As Of	Credit	ifrs-full:ContingentLiabilitiesRecognisedInBusinessCombination
642	Settlement of pre-existing relationship	Concept (Monetary)	As Of	Credit	cae:SettlementofPreexistingRelationshipRecognisedInBusinessCombination
643	Fair value of previously held interest in AACE	Concept (Monetary)	As Of	Credit	ifrs-full:AcquisitiondateFairValueOfEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate
644	Total cash consideration	Concept (Monetary)	As Of	Credit	ifrs-full:CashTransferred
645	2410402 - Disclosure - ACCOUNTS RECEIVABLE (Details)	Network	*	*	http://www.cae.com/role/AccountsReceivableDetails
646	Disclosure of financial assets [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsTable
647	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
648	Carrying amount [member]	Member			ifrs-full:CarryingAmountMember
649	Gross carrying amount	Member			ifrs-full:GrossCarryingAmountMember
650	Past due status [axis]	Axis			ifrs-full:PastDueStatusAxis
651	Past due status [member]	Member			ifrs-full:PastDueStatusMember
652	Current	Member			ifrs-full:CurrentMember
653	1-30 days	Member			ifrs-full:NotLaterThanOneMonthMember
654	31-60 days	Member			ifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMember
655	61-90 days	Member			ifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember
656	Greater than 90 days	Member			ifrs-full:LaterThanThreeMonthsMember
657	Disclosure of financial assets [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsLineItems
658	Accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentTradeReceivables
659	Allowance for doubtful accounts	Concept (Monetary)	As Of	Credit	ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
660	Accrued receivables	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAccruedIncome
661	Receivables from related parties (Note 32)	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivablesDueFromRelatedParties
662	Other receivables	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentReceivables
663	Total accounts receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
664	Reconciliation of changes in allowance account for credit losses of financial assets [abstract]	Abstract			ifrs-full:ReconciliationOfChangesInAllowanceAccountForCreditLossesOfFinancialAssetsAbstract
665	Allowance for doubtful accounts, beginning of year	Concept (Monetary)	As Of	Credit	ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
666	Changes in allowance account for credit losses of financial assets [abstract]	Abstract			ifrs-full:ChangesInAllowanceAccountForCreditLossesOfFinancialAssetsAbstract
667	Additions	Concept (Monetary)	For Period		ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
668	Amounts charged off	Concept (Monetary)	For Period	Debit	ifrs-full:UtilisationAllowanceAccountForCreditLossesOfFinancialAssets
669	Unused amounts reversed	Concept (Monetary)	For Period		ifrs-full:ReversalAllowanceAccountForCreditLossesOfFinancialAssets
670	Exchange differences	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesAllowanceAccountForCreditLossesOfFinancialAssets
671	Allowance for doubtful accounts, end of year	Concept (Monetary)	As Of	Credit	ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
672	2413402 - Disclosure - INVENTORIES (Details)	Network	*	*	http://www.cae.com/role/InventoriesDetails
673	Implied Table	Table	*	*	implied:Table
674	Inventories [Abstract]	Abstract			cae:InventoriesAbstract
675	Work in progress	Concept (Monetary)	As Of	Debit	ifrs-full:WorkInProgress
676	Raw materials, supplies and manufactured products	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentRawMaterialsAndCurrentProductionSupplies
677	Inventories	Concept (Monetary)	As Of	Debit	ifrs-full:Inventories
678	2413403 - Disclosure - INVENTORIES - Cost of Sales (Details)	Network	*	*	http://www.cae.com/role/InventoriesCostOfSalesDetails
679	Schedule of Inventory [Table]	Table	*	*	cae:ScheduleofInventoryTable
680	Types of Inventory [Axis]	Axis			cae:TypesofInventoryAxis
681	Types of Inventory [Domain]	Member			cae:TypesofInventoryDomain
682	Work In Progress	Member			cae:WorkInProgressMember
683	Raw Materials, Supplies And Manufactured Products	Member			cae:RawMaterialsSuppliesAndManufacturedProductsMember
684	Schedule of Inventory [Line Items]	LineItems			cae:ScheduleofInventoryLineItems
685	Cost of inventories recognised as expense during period	Concept (Monetary)	For Period	Debit	ifrs-full:CostOfInventoriesRecognisedAsExpenseDuringPeriod
686	2416402 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details)	Network	*	*	http://www.cae.com/role/PropertyPlantAndEquipmentDetails
687	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
688	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
689	Property, plant and equipment	Member			ifrs-full:PropertyPlantAndEquipmentMember
690	Land	Member			ifrs-full:LandMember
691	Buildings and improvements	Member			ifrs-full:BuildingsMember
692	Simulators	Member			cae:SimulatorsMember
693	Machinery and equipment	Member			ifrs-full:MachineryMember
694	Aircraft and aircraft engines	Member			cae:AircraftAndAircraftEnginesMember
695	Assets under finance lease	Member			cae:AssetsUnderFinanceLeaseMember
696	Assets under construction	Member			ifrs-full:ConstructionInProgressMember
697	Simulators under operating lease	Member			ifrs-full:PropertyPlantAndEquipmentUnderOperatingLeasesMember
698	Simulators under finance lease	Member			cae:SimulatorsUnderFinanceLeaseMember
699	Buildings under finance lease	Member			cae:BuildingsUnderFinanceLeaseMember
700	Property, plant and equipment under finance lease	Member			cae:PropertyPlantandEquipmentUnderFinanceLeaseMember
701	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
702	Carrying amount [member]	Member			ifrs-full:CarryingAmountMember
703	Cost	Member			ifrs-full:GrossCarryingAmountMember
704	Accumulated depreciation	Member			ifrs-full:AccumulatedDepreciationAndAmortisationMember
705	Maturity [axis]	Axis			ifrs-full:MaturityAxis
706	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
707	No later than 1 year	Member			ifrs-full:NotLaterThanOneYearMember
708	Later than 1 year and no later than 5 years	Member			ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
709	Later than 5 years	Member			ifrs-full:LaterThanFiveYearsMember
710	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
711	Reconciliation of changes in property, plant and equipment [abstract]	Abstract			ifrs-full:ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract
712	Property, plant and equipment, start	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
713	Additions	Concept (Monetary)	For Period	Debit	ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
714	Acquisition of subsidiaries	Concept (Monetary)	For Period	Debit	ifrs-full:AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment
715	Disposals	Concept (Monetary)	For Period	Credit	ifrs-full:DisposalsPropertyPlantAndEquipment
716	Depreciation	Concept (Monetary)	For Period		ifrs-full:DepreciationPropertyPlantAndEquipment
717	Impairment (Note 20)	Concept (Monetary)	For Period		ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
718	Transfers and others	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesPropertyPlantAndEquipment
719	Exchange differences	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
720	Property, plant and equipment, end	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
721	Useful lives or depreciation rates, property, plant and equipment	Concept (xbrli:durationItemType)	For Period		cae:AmortizationPeriodPropertyPlantAndEquipment
722	Property, plant and equipment, pledged as security	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipmentPledgedAsSecurity
723	Minimum lease payments receivable under non-cancellable operating lease	Concept (Monetary)	As Of	Debit	ifrs-full:MinimumLeasePaymentsReceivableUnderNoncancellableOperatingLease
724	Finance lease asset	Concept (Monetary)	As Of	Debit	ifrs-full:RecognisedFinanceLeaseAsAssets
725	2419402 - Disclosure - INTANGIBLE ASSETS (Details)	Network	*	*	http://www.cae.com/role/IntangibleAssetsDetails
726	Disclosure of reconciliation of changes in intangible assets and goodwill [table]	Table	*	*	ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable
727	Methods of generation [axis]	Axis			ifrs-full:MethodsOfGenerationAxis
728	Methods of generation [member]	Member			ifrs-full:MethodsOfGenerationMember
729	Internally generated	Member			ifrs-full:InternallyGeneratedMember
730	Not internally generated	Member			ifrs-full:NotInternallyGeneratedMember
731	Classes of intangible assets and goodwill [axis]	Axis			ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
732	Intangible assets and goodwill [member]	Member			ifrs-full:IntangibleAssetsAndGoodwillMember
733	Goodwill	Member			ifrs-full:GoodwillMember
734	Capitalized development costs	Member			ifrs-full:CapitalisedDevelopmentExpenditureMember
735	Customer relationships	Member			ifrs-full:CustomerrelatedIntangibleAssetsMember
736	ERP and other software	Member			cae:ERPandOtherSoftwareMember
737	Technology	Member			ifrs-full:TechnologybasedIntangibleAssetsMember
738	Other intangible assets	Member			ifrs-full:OtherIntangibleAssetsMember
739	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
740	Carrying amount [member]	Member			ifrs-full:CarryingAmountMember
741	Cost	Member			ifrs-full:GrossCarryingAmountMember
742	Accumulated amortization	Member			ifrs-full:AccumulatedDepreciationAndAmortisationMember
743	Income Statement Location [Axis]	Axis			cae:IncomeStatementLocation1Axis
744	Income Statement Location [Domain]	Member			cae:IncomeStatementLocation1Domain
745	Cost of sales	Member			cae:CostOfRevenueMember
746	Research and development expenses	Member			cae:ResearchAndDevelopmentExpensesMember
747	Selling, general and administrative expenses	Member			cae:SellingGeneralAndAdministrativeExpenses1Member
748	Disclosure of reconciliation of changes in intangible assets and goodwill [line items]	LineItems			ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems
749	Reconciliation of changes in intangible assets and goodwill [abstract]	Abstract			ifrs-full:ReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract
750	Intangible assets, start	Concept (Monetary)	As Of	Debit	ifrs-full:IntangibleAssetsAndGoodwill
751	Additions � acquired separately	Concept (Monetary)	For Period	Debit	ifrs-full:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
752	Acquisition of subsidiaries	Concept (Monetary)	For Period	Debit	ifrs-full:AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill
753	Disposal and remeasurement of interest in investment	Concept (Monetary)	For Period	Credit	cae:DisposalAndRemeasurementOfInterestInInvestment
754	Amortization	Concept (Monetary)	For Period		ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
755	Transfers and others	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesIntangibleAssetsAndGoodwill
756	Exchange differences	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill
757	Intangible assets, end	Concept (Monetary)	As Of	Debit	ifrs-full:IntangibleAssetsAndGoodwill
758	Amortization	Concept (Monetary)	For Period	Debit	ifrs-full:AmortisationExpense
759	Remaining useful lives or amortisation rates, intangible assets other than goodwill, period	Concept (xbrli:durationItemType)	For Period		cae:RemainingUsefulLivesOrAmortisationRatesIntangibleAssetsOtherThanGoodwillPeriod
760	Number of intangible assets with indefinite useful life other than goodwill	Concept (Integer)	For Period		cae:NumberOfIntangibleAssetsWithIndefiniteUsefulLifeOtherThanGoodwill
761	2422402 - Disclosure - OTHER ASSETS (Details)	Network	*	*	http://www.cae.com/role/OtherAssetsDetails
762	Implied Table	Table	*	*	implied:Table
763	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
764	Miscellaneous assets [abstract]	Abstract			ifrs-full:MiscellaneousAssetsAbstract
765	Restricted cash (Note 28)	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
766	Prepaid rent to a portfolio investment	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentPrepayments
767	Advances to a portfolio investment (Note 28)	Concept (Monetary)	As Of	Debit	cae:NoncurrentAdvancesToPortfolioInvestment
768	Non-current receivables	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentLoansAndReceivables
769	Investment tax credits	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentReceivablesFromTaxesOtherThanIncomeTax
770	Other	Concept (Monetary)	As Of	Debit	cae:NoncurrentAssetsMiscellaneous
771	Other non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherNoncurrentAssets
772	2422403 - Disclosure - OTHER ASSETS - Payment Receivables (Details)	Network	*	*	http://www.cae.com/role/OtherAssetsPaymentReceivablesDetails
773	Implied Table	Table	*	*	implied:Table
774	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
775	Gross investment in finance lease contracts	Concept (Monetary)	As Of	Debit	ifrs-full:GrossInvestmentInFinanceLease
776	Less: unearned finance income	Concept (Monetary)	As Of	Debit	ifrs-full:UnearnedFinanceIncomeOnFinanceLease
777	Less: discounted unguaranteed residual values of leased assets	Concept (Monetary)	As Of	Debit	ifrs-full:DiscountedUnguaranteedResidualValueOfAssetsSubjectToFinanceLease
778	Present value of future minimum lease payment receivables	Concept (Monetary)	As Of	Debit	ifrs-full:MinimumFinanceLeasePaymentsReceivableAtPresentValue
779	2422404 - Disclosure - OTHER ASSETS - Investments In Finance Lease Contracts (Details)	Network	*	*	http://www.cae.com/role/OtherAssetsInvestmentsInFinanceLeaseContractsDetails
780	Disclosure of finance lease and operating lease by lessor [table]	Table	*	*	ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorTable
781	Maturity [axis]	Axis			ifrs-full:MaturityAxis
782	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
783	No later than 1 year	Member			ifrs-full:NotLaterThanOneYearMember
784	Later than 1 year and no later than 5 years	Member			ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
785	Later than 5 years	Member			ifrs-full:LaterThanFiveYearsMember
786	Disclosure of finance lease and operating lease by lessor [line items]	LineItems			ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorLineItems
787	Gross investment in finance lease	Concept (Monetary)	As Of	Debit	ifrs-full:GrossInvestmentInFinanceLease
788	Present value of future minimum lease payment receivables	Concept (Monetary)	As Of	Debit	ifrs-full:MinimumFinanceLeasePaymentsReceivableAtPresentValue
789	2425402 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Details)	Network	*	*	http://www.cae.com/role/AccountsPayableAndAccruedLiabilitiesDetails
790	Implied Table	Table	*	*	implied:Table
791	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
792	Accounts payable trade	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
793	Accrued liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:AccrualsClassifiedAsCurrent
794	Amount due to related parties	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
795	Current portion of royalty obligations	Concept (Monetary)	As Of	Credit	cae:CurrentPortionOfRoyaltyObligations
796	Accounts payable and accrued liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayables
797	2428402 - Disclosure - CONTRACTS IN PROGRESS (Details)	Network	*	*	http://www.cae.com/role/ContractsInProgressDetails
798	Implied Table	Table	*	*	implied:Table
799	Recognised Revenue From Construction Contracts [Abstract]	Abstract			cae:RecognisedRevenueFromConstructionContractsAbstract
800	Contracts in progress: assets	Concept (Monetary)	As Of	Debit	ifrs-full:GrossAmountDueFromCustomersForContractWorkAsAsset
801	Contracts in progress: liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:GrossAmountDueToCustomersForContractWorkAsLiability
802	Contracts in progress: net assets	Concept (Monetary)	As Of	Debit	cae:NetAmountDueFromCustomersForContractWorkAsAsset
803	Aggregate amount of costs incurred plus recognized profits (less recognized losses) to date	Concept (Monetary)	As Of		ifrs-full:CostsIncurredAndRecognisedProfitsLessRecognisedLosses
804	Less: progress billings	Concept (Monetary)	As Of		ifrs-full:ProgressBillings
805	Advances received for contracts in progress	Concept (Monetary)	As Of	Credit	ifrs-full:AdvancesReceivedForContractsInProgress
806	Revenue from construction contracts	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromConstructionContracts
807	2431402 - Disclosure - PROVISIONS (Details)	Network	*	*	http://www.cae.com/role/ProvisionsDetails
808	Disclosure of other provisions [table]	Table	*	*	ifrs-full:DisclosureOfOtherProvisionsTable
809	Range [axis]	Axis			ifrs-full:RangeAxis
810	Ranges [member]	Member			ifrs-full:RangesMember
811	Bottom of range	Member			ifrs-full:BottomOfRangeMember
812	Top of range	Member			ifrs-full:TopOfRangeMember
813	Classes of other provisions [axis]	Axis			ifrs-full:ClassesOfProvisionsAxis
814	Other provisions [member]	Member			ifrs-full:OtherProvisionsMember
815	Restoration and removal	Member			ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
816	Restructuring	Member			ifrs-full:RestructuringProvisionMember
817	Legal	Member			ifrs-full:LegalProceedingsProvisionMember
818	Warranties	Member			ifrs-full:WarrantyProvisionMember
819	Contingent consideration	Member			cae:ContingentConsiderationProvisionMember
820	Other	Member			ifrs-full:MiscellaneousOtherProvisionsMember
821	Disclosure of other provisions [line items]	LineItems			ifrs-full:DisclosureOfOtherProvisionsLineItems
822	Expected warranty claims on products, period	Concept (xbrli:durationItemType)	For Period		cae:ExpectedWarrantyClaimsPeriod
823	Reconciliation of changes in other provisions [abstract]	Abstract			ifrs-full:ReconciliationOfChangesInOtherProvisionsAbstract
824	Provisions, start	Concept (Monetary)	As Of	Credit	ifrs-full:OtherProvisions
825	Additions	Concept (Monetary)	For Period	Credit	ifrs-full:AdditionalProvisionsOtherProvisions
826	Acquisition of subsidiaries	Concept (Monetary)	For Period	Credit	ifrs-full:AcquisitionsThroughBusinessCombinationsOtherProvisions
827	Amounts used	Concept (Monetary)	For Period	Debit	ifrs-full:ProvisionUsedOtherProvisions
828	Unused amounts reversed	Concept (Monetary)	For Period	Debit	ifrs-full:UnusedProvisionReversedOtherProvisions
829	Exchange differences	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
830	Provisions, end	Concept (Monetary)	As Of	Credit	ifrs-full:OtherProvisions
831	Less: current portion	Concept (Monetary)	As Of	Credit	ifrs-full:OtherShorttermProvisions
832	Long-term portion	Concept (Monetary)	As Of	Credit	ifrs-full:OtherLongtermProvisions
833	2434402 - Disclosure - DEBT FACILITIES - Long-term Debt (Details)	Network	*	*	http://www.cae.com/role/DebtFacilitiesLongTermDebtDetails
834	Disclosure of detailed information about borrowings [table]	Table	*	*	ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
835	Borrowings with Recourse [Axis]	Axis			cae:BorrowingswithRecourseAxis
836	Borrowings with Recourse [Domain]	Member			cae:BorrowingswithRecourseDomain
837	Recourse Debt	Member			cae:RecourseDebtMember
838	Non-recourse Debt	Member			cae:NonrecourseDebtMember
839	Borrowings by name [axis]	Axis			ifrs-full:BorrowingsByNameAxis
840	Borrowings by name [member]	Member			ifrs-full:BorrowingsByNameMember
841	Types of interest rates [axis]	Axis			ifrs-full:TypesOfInterestRatesAxis
842	Interest rate types [member]	Member			ifrs-full:InterestRateTypesMember
843	Range [axis]	Axis			ifrs-full:RangeAxis
844	Ranges [member]	Member			ifrs-full:RangesMember
845	Disclosure of detailed information about borrowings [line items]	LineItems			ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
846	Debt	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
847	Less: current portion of long-term debt	Concept (Monetary)	As Of	Credit	cae:LongtermDebtCurrentPortionExcludingCurrentPortionofFinanceLeases
848	Less: current portion of long-term debt	Concept (Monetary)	As Of	Credit	cae:LongtermDebtFinanceLeasesCurrentPortion
849	Long-term debt, net	Concept (Monetary)	As Of	Credit	ifrs-full:LongtermBorrowings
850	2434403 - Disclosure - DEBT FACILITIES - Recourse Debt (Details)	Network	*	*	http://www.cae.com/role/DebtFacilitiesRecourseDebtDetails
851	Disclosure of detailed information about borrowings [table]	Table	*	*	ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
852	Borrowings with Recourse [Axis]	Axis			cae:BorrowingswithRecourseAxis
853	Borrowings with Recourse [Domain]	Member			cae:BorrowingswithRecourseDomain
854	Recourse Debt	Member			cae:RecourseDebtMember
855	Variable Rate Type [Axis]	Axis			cae:VariableRateTypeAxis
856	Variable Rate Type [Domain]	Member			cae:VariableRateTypeDomain
857	Euro Interbank Offered Rate (EURIBOR)	Member			cae:EuroInterbankOfferedRateEURIBORMember
858	Range [axis]	Axis			ifrs-full:RangeAxis
859	Ranges [member]	Member			ifrs-full:RangesMember
860	Bottom of range	Member			ifrs-full:BottomOfRangeMember
861	Top of range	Member			ifrs-full:TopOfRangeMember
862	Borrowings by name [axis]	Axis			ifrs-full:BorrowingsByNameAxis
863	Borrowings by name [member]	Member			ifrs-full:BorrowingsByNameMember
864	Unsecured Senior Notes, Between 2019 and December 2027	Member			cae:UnsecuredSeniorNotesBetween2019andDecember2027Member
865	Unsecured Senior Notes, June 2019	Member			cae:UnsecuredSeniorNotesJune2019Member
866	Unsecured Senior Notes, August 2021	Member			cae:UnsecuredSeniorNotesAugust2021Member
867	Unsecured Senior Notes, August 2026	Member			cae:UnsecuredSeniorNotesAugust2026Member
868	Unsecured Senior Notes, August 2021 and August 2026	Member			cae:UnsecuredSeniorNotesAugust2021andAugust2026Member
869	Obligations Under Finance Lease, April 2018 to October 2036	Member			cae:ObligationsUnderFinanceLeaseApril2018toOctober2036Member
870	Term Loan, June 2018	Member			cae:TermLoanJune2018Member
871	R&D Obligation, Government Agency, July 2029	Member			cae:RDObligationGovernmentAgencyJuly2029Member
872	R&D Obligation, Government Agency, July 2035	Member			cae:RDObligationGovernmentAgencyJuly2035Member
873	Term Loan, January 2020	Member			cae:TermLoanJanuary2020Member
874	Term Loan, Between October 2020 and December 2021	Member			cae:TermLoanBetweenOctober2020andDecember2021Member
875	Other Debt, March 2024	Member			cae:OtherDebtMarch2024Member
876	Term Loan, December 2021	Member			cae:TermLoanDecember2021Member
877	Disclosure of detailed information about borrowings [line items]	LineItems			ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
878	Debt	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
879	Line of credit facility, maximum borrowing capacity	Concept (Monetary)	As Of	Credit	cae:LineofCreditFacilityMaximumBorrowingCapacity1
880	R&D, project term	Concept (xbrli:durationItemType)	For Period		cae:RDProjectTerm
881	R&D obligation, recognized	Concept (Monetary)	For Period	Credit	cae:BorrowingsAggregateAmountRecognized
882	Notional amount	Concept (Monetary)	As Of		ifrs-full:NotionalAmount
883	Debt instrument, basis spread on floating interest rate	Concept (Monetary)	As Of	Debit	cae:DebtInstrumentBasisSpreadonFloatingInterestRate
884	Borrowings, interest rate	Concept (Percent)	As Of		ifrs-full:BorrowingsInterestRate
885	Notional Amount, remaining	Concept (Monetary)	As Of	Debit	cae:NotionalAmountRemaining
886	Coupon rate, post swap debt	Concept (Percent)	As Of		cae:CouponRatePostSwapDebt
887	2434404 - Disclosure - DEBT FACILITIES (Details)	Network	*	*	http://www.cae.com/role/DebtFacilitiesDetails
888	Disclosure of detailed information about borrowings [table]	Table	*	*	ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
889	Borrowings by name [axis]	Axis			ifrs-full:BorrowingsByNameAxis
890	Borrowings by name [member]	Member			ifrs-full:BorrowingsByNameMember
891	Revolving Unsecured Term Credit Facility, September 2022	Member			cae:RevolvingUnsecuredTermCreditFacilitySeptember2022Member
892	Disclosure of detailed information about borrowings [line items]	LineItems			ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
893	Line of credit facility, maximum borrowing capacity	Concept (Monetary)	As Of	Credit	cae:LineofCreditFacilityMaximumBorrowingCapacity1
894	Line of credit facility, maximum borrowing capacity option	Concept (Monetary)	As Of	Credit	cae:LineofCreditFacilityMaximumBorrowingCapacityOption
895	Debt	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
896	2434405 - Disclosure - DEBT FACILITIES - Non-recourse Debt (Details)	Network	*	*	http://www.cae.com/role/DebtFacilitiesNonRecourseDebtDetails
897	Disclosure of detailed information about borrowings [table]	Table	*	*	ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
898	Borrowings with Recourse [Axis]	Axis			cae:BorrowingswithRecourseAxis
899	Borrowings with Recourse [Domain]	Member			cae:BorrowingswithRecourseDomain
900	Non-recourse Debt	Member			cae:NonrecourseDebtMember
901	Variable Rate Type [Axis]	Axis			cae:VariableRateTypeAxis
902	Variable Rate Type [Domain]	Member			cae:VariableRateTypeDomain
903	London Interbank Offered Rate (LIBOR)	Member			cae:LondonInterbankOfferedRateMember
904	Borrowings by name [axis]	Axis			ifrs-full:BorrowingsByNameAxis
905	Borrowings by name [member]	Member			ifrs-full:BorrowingsByNameMember
906	Term Loan, Between October 2020 and December 2021	Member			cae:TermLoanBetweenOctober2020andDecember2021Member
907	Term Loan, April 2018	Member			cae:TermLoanApril2018Member
908	Term Loan, March 2028	Member			cae:TermLoanMarch2028Member
909	Term Loan, Between June 2021 and December 2025	Member			cae:TermLoanBetweenJune2021andDecember2025Member
910	Disclosure of detailed information about borrowings [line items]	LineItems			ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
911	Debt	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
912	Notional amount	Concept (Monetary)	As Of		ifrs-full:NotionalAmount
913	Borrowings, interest rate	Concept (Percent)	As Of		ifrs-full:BorrowingsInterestRate
914	Line of credit facility, maximum borrowing capacity	Concept (Monetary)	As Of	Credit	cae:LineofCreditFacilityMaximumBorrowingCapacity1
915	2434406 - Disclosure - DEBT FACILITIES - Retirement Payments (Details)	Network	*	*	http://www.cae.com/role/DebtFacilitiesRetirementPaymentsDetails
916	Disclosure of finance lease and operating lease by lessee [table]	Table	*	*	ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
917	Maturity [axis]	Axis			ifrs-full:MaturityAxis
918	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
919	No later than 1 year	Member			ifrs-full:NotLaterThanOneYearMember
920	Later than 1 year and no later than 5 years	Member			ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
921	Later than 5 years	Member			ifrs-full:LaterThanFiveYearsMember
922	Disclosure of finance lease and operating lease by lessee [line items]	LineItems			ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
923	Required payments related to retirement provisions, long-term debt, gross	Concept (Monetary)	For Period	Credit	cae:RequiredPaymentsRelatedToRetirementProvisionsLongTermDebtGross
924	Required payments related to retirement provisions, long-term debt, transaction costs	Concept (Monetary)	For Period	Debit	cae:RequiredPaymentsRelatedToRetirementProvisionsLongTermDebtTransactionCosts
925	Required payments related to retirement provisions, long-term debt, net	Concept (Monetary)	For Period	Credit	cae:RequiredPaymentsRelatedToRetirementProvisionsLongTermDebtNet
926	2434407 - Disclosure - DEBT FACILITIES - Financing Activities (Details)	Network	*	*	http://www.cae.com/role/DebtFacilitiesFinancingActivitiesDetails
927	Disclosure of reconciliation of liabilities arising from financing activities [table]	Table	*	*	ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable
928	Liabilities arising from financing activities [axis]	Axis			ifrs-full:LiabilitiesArisingFromFinancingActivitiesAxis
929	Liabilities arising from financing activities [member]	Member			ifrs-full:LiabilitiesArisingFromFinancingActivitiesMember
930	Revolving Unsecured Credit Facilities	Member			cae:RevolvingUnsecuredCreditFacilitiesMember
931	Long-term debt	Member			ifrs-full:LongtermBorrowingsMember
932	Finance Leases	Member			ifrs-full:LeaseLiabilitiesMember
933	Disclosure of reconciliation of liabilities arising from financing activities [line items]	LineItems			ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems
934	Liabilities arising from financing activities, beginning	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilitiesArisingFromFinancingActivities
935	Proceeds, net of transaction costs	Concept (Monetary)	For Period	Credit	cae:IncreaseDecreaseThroughProceedsNetOfTransactionCostsLiabilitiesArisingFromFinancingActivities
936	Repayments	Concept (Monetary)	For Period	Debit	cae:IncreaseDecreaseThroughRepaymentsArisingFromFinancingActivities
937	Total changes from financing cash flows	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughFinancingCashFlowsLiabilitiesArisingFromFinancingActivities
938	Additions through a business combination	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughObtainingOrLosingControlOfSubsidiariesOrOtherBusinessesLiabilitiesArisingFromFinancingActivities
939	Effect of foreign currency exchange differences	Concept (Monetary)	For Period	Credit	cae:EffectofExchangeRateNoncashFinancingActivities
940	Others	Concept (Monetary)	For Period	Credit	cae:OtherNoncashFinancingActivities
941	Interests	Concept (Monetary)	For Period	Credit	cae:InterestsNoncashFinancingActivities
942	Non-cash changes	Concept (Monetary)	For Period	Credit	cae:NoncashFinancingActivities
943	Liabilities arising from financing activities, end	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilitiesArisingFromFinancingActivities
944	2434408 - Disclosure - DEBT FACILITIES - Future Minimum Lease Payments (Details)	Network	*	*	http://www.cae.com/role/DebtFacilitiesFutureMinimumLeasePaymentsDetails
945	Disclosure of finance lease and operating lease by lessee [table]	Table	*	*	ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
946	Maturity [axis]	Axis			ifrs-full:MaturityAxis
947	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
948	No later than 1 year	Member			ifrs-full:NotLaterThanOneYearMember
949	Later than 1 year and no later than 5 years	Member			ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
950	Later than 5 years	Member			ifrs-full:LaterThanFiveYearsMember
951	Disclosure of finance lease and operating lease by lessee [line items]	LineItems			ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
952	Minimum finance lease payments payable	Concept (Monetary)	As Of	Credit	ifrs-full:MinimumFinanceLeasePaymentsPayable
953	Future finance charge on finance lease	Concept (Monetary)	As Of	Credit	ifrs-full:FutureFinanceChargeOnFinanceLease
954	Discounted guaranteed residual value of assets subject to finance lease	Concept (Monetary)	As Of	Credit	cae:DiscountedGuaranteedResidualValueOfAssetsSubjectToFinanceLease
955	Minimum finance lease payments payable, at present value	Concept (Monetary)	As Of	Credit	ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
956	2437402 - Disclosure - GOVERNMENT PARTICIPATION - Narrative (Details)	Network	*	*	http://www.cae.com/role/GovernmentParticipationNarrativeDetails
957	Disclosure of Government Grants [Table]	Table	*	*	cae:DisclosureofGovernmentGrantsTable
958	Program Name [Axis]	Axis			cae:ProgramNameAxis
959	Program Name [Domain]	Member			cae:ProgramNameDomain
960	Project Innovate	Member			cae:ProjectInnovateMember
961	Project New Core Markets	Member			cae:ProjectNewCoreMarketsMember
962	Project Sim�co 4.0	Member			cae:ProjectSimco4.0Member
963	Disclosure of Government Grants [Line Items]	LineItems			cae:DisclosureofGovernmentGrantsLineItems
964	Borrowings	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
965	Term of program	Concept (xbrli:durationItemType)	For Period		cae:GovernmentParticipationProgramTerm
966	Government participation	Concept (Monetary)	As Of	Credit	ifrs-full:GovernmentGrants
967	Government participation, percent of eligible costs, committed contributions	Concept (Percent)	For Period		cae:GovernmentParticipationPercentofEligibleCostsCommittedContributions
968	2437403 - Disclosure - GOVERNMENT PARTICIPATION - Net Contributions Recognized and Amounts Not Yet Received (Details)	Network	*	*	http://www.cae.com/role/GovernmentParticipationNetContributionsRecognizedAndAmountsNotYetReceivedDetails
969	Implied Table	Table	*	*	implied:Table
970	Government Grants [Abstract]	Abstract			cae:GovernmentGrantsAbstract
971	Net outstanding contribution receivable, beginning of year	Concept (Monetary)	As Of	Debit	cae:GovernmentParticipationContributionsReceivable
972	Contributions	Concept (Monetary)	For Period	Credit	cae:GovernmentParticipationContributions
973	Payments received	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromGovernmentGrantsClassifiedAsInvestingActivities
974	Net outstanding contribution receivable, end of year	Concept (Monetary)	As Of	Debit	cae:GovernmentParticipationContributionsReceivable
975	2437404 - Disclosure - GOVERNMENT PARTICIPATION - Aggregate Contributions Recognized (Details)	Network	*	*	http://www.cae.com/role/GovernmentParticipationAggregateContributionsRecognizedDetails
976	Disclosure of Government Grants [Table]	Table	*	*	cae:DisclosureofGovernmentGrantsTable
977	Program Name [Axis]	Axis			cae:ProgramNameAxis
978	Program Name [Domain]	Member			cae:ProgramNameDomain
979	Project New Core Markets	Member			cae:ProjectNewCoreMarketsMember
980	Project Innovate	Member			cae:ProjectInnovateMember
981	Project Sim�co 4.0	Member			cae:ProjectSimco4.0Member
982	Disclosure of Government Grants [Line Items]	LineItems			cae:DisclosureofGovernmentGrantsLineItems
983	Contributions credited to capitalized expenditures	Concept (Monetary)	For Period	Credit	cae:GovernmentParticipationContributionsCredittoCapitalizedExpenditures
984	Contributions credited to income	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromGovernmentGrants
985	Total contributions	Concept (Monetary)	For Period	Credit	cae:GovernmentParticipationContributions
986	2440402 - Disclosure - EMPLOYEE BENEFITS OBLIGATIONS (Details)	Network	*	*	http://www.cae.com/role/EmployeeBenefitsObligationsDetails
987	Disclosure of defined benefit plans [table]	Table	*	*	ifrs-full:DisclosureOfDefinedBenefitPlansTable
988	Net defined benefit liability (asset) [axis]	Axis			ifrs-full:NetDefinedBenefitLiabilityAssetAxis
989	Net defined benefit liability (asset) [member]	Member			ifrs-full:NetDefinedBenefitLiabilityAssetMember
990	Present value of defined benefit obligation	Member			ifrs-full:PresentValueOfDefinedBenefitObligationMember
991	Funding Arrangements Of Defined Benefit Plans [Axis]	Axis			cae:FundingArrangementsOfDefinedBenefitPlansAxis
992	Funding Arrangements of Defined Benefits Plans [Domain]	Member			cae:FundingArrangementsOfDefinedBenefitPlansDomain
993	Unfunded	Member			cae:WhollyUnfundedDefinedBenefitPlansMember
994	Income Statement Location [Axis]	Axis			cae:IncomeStatementLocation1Axis
995	Income Statement Location [Domain]	Member			cae:IncomeStatementLocation1Domain
996	Cost of sales	Member			cae:CostOfRevenueMember
997	Research and development expenses	Member			cae:ResearchAndDevelopmentExpensesMember
998	Selling, general and administrative expenses	Member			cae:SellingGeneralAndAdministrativeExpenses1Member
999	Disclosure of defined benefit plans [line items]	LineItems			ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1000	Number Of Registered Funded Defined Benefit Pension Plans	Concept (Integer)	For Period		cae:NumberOfRegisteredFundedDefinedBenefitPensionPlans
1001	Number Of Registered Funded Defined Benefit Pension Plans For Employees	Concept (Integer)	For Period		cae:NumberOfRegisteredFundedDefinedBenefitPensionPlansForEmployees
1002	Number Of Registered Funded Defined Benefit Pension Plans For Designated Executives	Concept (Integer)	For Period		cae:NumberOfRegisteredFundedDefinedBenefitPensionPlansForDesignatedExecutives
1003	Net defined benefit liability (asset)	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1004	Letters of credit outstanding, amount	Concept (Monetary)	As Of	Credit	cae:LettersofCreditOutstandingAmount1
1005	Post-employment benefits � defined benefit plans	Concept (Monetary)	For Period	Debit	ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
1006	Finance expense	Concept (Monetary)	For Period	Debit	cae:FinanceExpense
1007	Finance costs, capitalized	Concept (Monetary)	For Period	Debit	cae:FinanceCostsCapitalized
1008	Weighted average duration of defined benefit obligation, period	Concept (xbrli:durationItemType)	For Period		cae:WeightedAverageDurationOfDefinedBenefitObligationPeriod
1009	Percentage of reasonably possible increase in actuarial assumption	Concept (Percent)	As Of		ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
1010	2440403 - Disclosure - EMPLOYEE BENEFITS OBLIGATIONS - Employee Benefit Obligation (Details)	Network	*	*	http://www.cae.com/role/EmployeeBenefitsObligationsEmployeeBenefitObligationDetails
1011	Disclosure of defined benefit plans [table]	Table	*	*	ifrs-full:DisclosureOfDefinedBenefitPlansTable
1012	Net defined benefit liability (asset) [axis]	Axis			ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1013	Net defined benefit liability (asset) [member]	Member			ifrs-full:NetDefinedBenefitLiabilityAssetMember
1014	Present value of defined benefit obligation	Member			ifrs-full:PresentValueOfDefinedBenefitObligationMember
1015	Plan assets	Member			ifrs-full:PlanAssetsMember
1016	Funding Arrangements Of Defined Benefit Plans [Axis]	Axis			cae:FundingArrangementsOfDefinedBenefitPlansAxis
1017	Funding Arrangements of Defined Benefits Plans [Domain]	Member			cae:FundingArrangementsOfDefinedBenefitPlansDomain
1018	Funded	Member			cae:WhollyOrPartlyFundedDefinedBenefitPlansMember
1019	Unfunded	Member			cae:WhollyUnfundedDefinedBenefitPlansMember
1020	Disclosure of defined benefit plans [line items]	LineItems			ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1021	Net defined benefit liability (asset)	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1022	2440404 - Disclosure - EMPLOYEE BENEFITS OBLIGATIONS - Movement In Defined Benefit Pension Obligation (Details)	Network	*	*	http://www.cae.com/role/EmployeeBenefitsObligationsMovementInDefinedBenefitPensionObligationDetails
1023	Disclosure of net defined benefit liability (asset) [table]	Table	*	*	ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
1024	Funding Arrangements Of Defined Benefit Plans [Axis]	Axis			cae:FundingArrangementsOfDefinedBenefitPlansAxis
1025	Funding Arrangements of Defined Benefits Plans [Domain]	Member			cae:FundingArrangementsOfDefinedBenefitPlansDomain
1026	Funded	Member			cae:WhollyOrPartlyFundedDefinedBenefitPlansMember
1027	Unfunded	Member			cae:WhollyUnfundedDefinedBenefitPlansMember
1028	Defined benefit plans [axis]	Axis			ifrs-full:DefinedBenefitPlansAxis
1029	Defined benefit plans [member]	Member			ifrs-full:DefinedBenefitPlansMember
1030	Canadian	Member			ifrs-full:DomesticDefinedBenefitPlansMember
1031	Foreign	Member			ifrs-full:ForeignDefinedBenefitPlansMember
1032	Net defined benefit liability (asset) [axis]	Axis			ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1033	Net defined benefit liability (asset) [member]	Member			ifrs-full:NetDefinedBenefitLiabilityAssetMember
1034	Present value of defined benefit obligation	Member			ifrs-full:PresentValueOfDefinedBenefitObligationMember
1035	Plan assets	Member			ifrs-full:PlanAssetsMember
1036	Disclosure of net defined benefit liability (asset) [line items]	LineItems			ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1037	Net defined benefit liability (asset)	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1038	Current service cost	Concept (Monetary)	For Period	Credit	ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1039	Interest cost/Interest income	Concept (Monetary)	For Period	Credit	ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1040	Past service cost, settlements and curtailments	Concept (Monetary)	For Period	Credit	ifrs-full:PastServiceCostAndGainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset
1041	Actuarial loss (gain) arising from:	Abstract			ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract
1042	Experience adjustments	Concept (Monetary)	For Period	Debit	ifrs-full:ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset
1043	Economic assumptions	Concept (Monetary)	For Period	Debit	ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1044	Demographic assumptions	Concept (Monetary)	For Period	Debit	ifrs-full:ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset
1045	Return on plan assets, excluding amounts included in interest income	Concept (Monetary)	For Period	Debit	ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
1046	Employee contributions	Concept (Monetary)	For Period	Debit	ifrs-full:ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset
1047	Employer contributions	Concept (Monetary)	For Period	Debit	ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
1048	Pension benefits paid	Concept (Monetary)	For Period	Debit	ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
1049	Administrative costs	Concept (Monetary)	For Period	Credit	cae:AdministrativeExpensesNetDefinedBenefitLiabilityAsset
1050	Exchange differences	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
1051	Net defined benefit liability (asset)	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1052	2440405 - Disclosure - EMPLOYEE BENEFITS OBLIGATIONS - Net Periodic Costs (Details)	Network	*	*	http://www.cae.com/role/EmployeeBenefitsObligationsNetPeriodicCostsDetails
1053	Disclosure of net defined benefit liability (asset) [table]	Table	*	*	ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
1054	Funding Arrangements Of Defined Benefit Plans [Axis]	Axis			cae:FundingArrangementsOfDefinedBenefitPlansAxis
1055	Funding Arrangements of Defined Benefits Plans [Domain]	Member			cae:FundingArrangementsOfDefinedBenefitPlansDomain
1056	Funded	Member			cae:WhollyOrPartlyFundedDefinedBenefitPlansMember
1057	Unfunded	Member			cae:WhollyUnfundedDefinedBenefitPlansMember
1058	Defined benefit plans [axis]	Axis			ifrs-full:DefinedBenefitPlansAxis
1059	Defined benefit plans [member]	Member			ifrs-full:DefinedBenefitPlansMember
1060	Canadian	Member			ifrs-full:DomesticDefinedBenefitPlansMember
1061	Foreign	Member			ifrs-full:ForeignDefinedBenefitPlansMember
1062	Net defined benefit liability (asset) [axis]	Axis			ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1063	Net defined benefit liability (asset) [member]	Member			ifrs-full:NetDefinedBenefitLiabilityAssetMember
1064	Present value of defined benefit obligation	Member			ifrs-full:PresentValueOfDefinedBenefitObligationMember
1065	Disclosure of net defined benefit liability (asset) [line items]	LineItems			ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1066	Current service cost	Concept (Monetary)	For Period	Credit	ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1067	Interest expense (income), net defined benefit liability (asset)	Concept (Monetary)	For Period	Credit	ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1068	Past service cost, net defined benefit liability (asset)	Concept (Monetary)	For Period	Credit	ifrs-full:PastServiceCostNetDefinedBenefitLiabilityAsset
1069	Administrative costs, net defined benefit liability (asset)	Concept (Monetary)	For Period	Credit	cae:Administrativecostsnetdefinedbenefitliabilityasset
1070	Post-employment benefits � defined benefit plans	Concept (Monetary)	For Period	Debit	cae:PostemploymentBenefitCostDefinedBenefitPlans
1071	2440406 - Disclosure - EMPLOYEE BENEFITS OBLIGATIONS - Plan Assets (Details)	Network	*	*	http://www.cae.com/role/EmployeeBenefitsObligationsPlanAssetsDetails
1072	Disclosure of fair value of plan assets [table]	Table	*	*	ifrs-full:DisclosureOfFairValueOfPlanAssetsTable
1073	Levels of fair value hierarchy [axis]	Axis			ifrs-full:LevelsOfFairValueHierarchyAxis
1074	All levels of fair value hierarchy [member]	Member			ifrs-full:AllLevelsOfFairValueHierarchyMember
1075	Level 1	Member			ifrs-full:Level1OfFairValueHierarchyMember
1076	Level 2 and 3 of fair value hierarchy	Member			ifrs-full:Level2And3OfFairValueHierarchyMember
1077	Type of Debt Instrument [Axis]	Axis			cae:TypeofDebtInstrumentAxis
1078	Type of Debt Instrument [Domain]	Member			cae:TypeofDebtInstrumentDomain
1079	Municipal	Member			cae:MunicipalDebtMember
1080	Corporate	Member			cae:CorporateDebtMember
1081	Other	Member			cae:OtherDebtMember
1082	Geographical areas [axis]	Axis			ifrs-full:GeographicalAreasAxis
1083	Geographical areas [member]	Member			ifrs-full:GeographicalAreasMember
1084	CANADA	Member			ifrs-full:CountryOfDomicileMember
1085	Foreign countries	Member			ifrs-full:ForeignCountriesMember
1086	Defined benefit plans [axis]	Axis			ifrs-full:DefinedBenefitPlansAxis
1087	Defined benefit plans [member]	Member			ifrs-full:DefinedBenefitPlansMember
1088	Canadian	Member			ifrs-full:DomesticDefinedBenefitPlansMember
1089	Foreign	Member			ifrs-full:ForeignDefinedBenefitPlansMember
1090	Disclosure of fair value of plan assets [line items]	LineItems			ifrs-full:DisclosureOfFairValueOfPlanAssetsLineItems
1091	Insured Annuities, Amount Contributed To Fair Value Of Plan Assets	Concept (Monetary)	As Of	Debit	cae:InsuredAnnuitiesAmountContributedToFairValueOfPlanAssets
1092	Equity instruments, amount contributed to fair value of plan assets	Concept (Monetary)	As Of	Debit	ifrs-full:EquityInstrumentsAmountContributedToFairValueOfPlanAssets
1093	Debt instruments, amount contributed to fair value of plan assets	Concept (Monetary)	As Of	Debit	ifrs-full:DebtInstrumentsAmountContributedToFairValueOfPlanAssets
1094	Cash and cash equivalents, amount contributed to fair value of plan assets	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssets
1095	Other assets, amount contributed to fair value of plan assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherAssetsAmountContributedToFairValueOfPlanAssets
1096	Plan assets, at fair value	Concept (Monetary)	As Of	Debit	ifrs-full:PlanAssetsAtFairValue
1097	2440407 - Disclosure - EMPLOYEE BENEFITS OBLIGATIONS - Significant Assumptions Weighted (Details)	Network	*	*	http://www.cae.com/role/EmployeeBenefitsObligationsSignificantAssumptionsWeightedDetails
1098	Disclosure of sensitivity analysis for actuarial assumptions [table]	Table	*	*	ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable
1099	Defined benefit plans [axis]	Axis			ifrs-full:DefinedBenefitPlansAxis
1100	Defined benefit plans [member]	Member			ifrs-full:DefinedBenefitPlansMember
1101	Canadian	Member			ifrs-full:DomesticDefinedBenefitPlansMember
1102	Foreign	Member			ifrs-full:ForeignDefinedBenefitPlansMember
1103	Disclosure of sensitivity analysis for actuarial assumptions [line items]	LineItems			ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1104	Actuarial assumption of discount rates, pension obligation	Concept (Percent)	As Of		ifrs-full:ActuarialAssumptionOfDiscountRates
1105	Actuarial assumption of expected rates of salary increases, pension obligation	Concept (Percent)	As Of		ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
1106	Actuarial assumption of discount rates, net pension cost	Concept (Percent)	As Of		cae:ActuarialAssumptionOfDiscountRatesNetPensionCost
1107	Actuarial assumption of expected rates of salary increases, net pension cost	Concept (Percent)	As Of		cae:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesNetPensionCost
1108	2440408 - Disclosure - EMPLOYEE BENEFITS OBLIGATIONS - Future Mortality Rate (Details)	Network	*	*	http://www.cae.com/role/EmployeeBenefitsObligationsFutureMortalityRateDetails
1109	Disclosure of sensitivity analysis for actuarial assumptions [table]	Table	*	*	ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable
1110	Gender [Axis]	Axis			cae:GenderAxis
1111	Gender [Domain]	Member			cae:GenderDomain
1112	Male	Member			cae:MaleMember
1113	Female	Member			cae:FemaleMember
1114	Life expectancy range [axis]	Axis			cae:LifeExpectancyRangeAxis
1115	Life expectancy range [Domain]	Member			cae:LifeexpectancyrangeDomain
1116	Life Expectancy, at Age 45	Member			cae:LifeExpectancyatAge45Member
1117	Life Expectancy, at Age 65	Member			cae:LifeExpectancyatAge65Member
1118	Geographical areas [axis]	Axis			ifrs-full:GeographicalAreasAxis
1119	Geographical areas [member]	Member			ifrs-full:GeographicalAreasMember
1120	CANADA	Member			ifrs-full:CountryOfDomicileMember
1121	NETHERLANDS	Member			country:NL
1122	GERMANY	Member			country:DE
1123	NORWAY	Member			country:NO
1124	UNITED KINGDOM	Member			country:GB
1125	Actuarial assumptions [axis]	Axis			ifrs-full:ActuarialAssumptionsAxis
1126	Actuarial assumptions [member]	Member			ifrs-full:ActuarialAssumptionsMember
1127	CPM private tables (employees)	Member			cae:CPMprivatetablesemployeesMember
1128	CPM private tables (designated executives)	Member			cae:CPMprivatetablesdesignatedexecutivesMember
1129	CPM private tables (CMAT)	Member			cae:CPMprivatetablesCMATMember
1130	AG2016	Member			cae:AG2016Member
1131	Heubeck RT2005G	Member			cae:HeubeckRT2005GMember
1132	K2013	Member			cae:K2013Member
1133	S1PA	Member			cae:S1PAMember
1134	Disclosure of sensitivity analysis for actuarial assumptions [line items]	LineItems			ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1135	Employee life expectancy	Concept (Decimal)	As Of		ifrs-full:ActuarialAssumptionOfLifeExpectancyAfterRetirement
1136	2440409 - Disclosure - EMPLOYEE BENEFITS OBLIGATIONS - Significant Assumptions (Details)	Network	*	*	http://www.cae.com/role/EmployeeBenefitsObligationsSignificantAssumptionsDetails
1137	Disclosure of defined benefit plans [table]	Table	*	*	ifrs-full:DisclosureOfDefinedBenefitPlansTable
1138	Actuarial assumptions [axis]	Axis			ifrs-full:ActuarialAssumptionsAxis
1139	Actuarial assumptions [member]	Member			ifrs-full:ActuarialAssumptionsMember
1140	Actuarial assumption of discount rates	Member			ifrs-full:ActuarialAssumptionOfDiscountRatesMember
1141	Actuarial assumption of expected rates of salary increases	Member			ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
1142	Funding Arrangements Of Defined Benefit Plans [Axis]	Axis			cae:FundingArrangementsOfDefinedBenefitPlansAxis
1143	Funding Arrangements of Defined Benefits Plans [Domain]	Member			cae:FundingArrangementsOfDefinedBenefitPlansDomain
1144	Funded	Member			cae:WhollyOrPartlyFundedDefinedBenefitPlansMember
1145	Unfunded	Member			cae:WhollyUnfundedDefinedBenefitPlansMember
1146	Defined benefit plans [axis]	Axis			ifrs-full:DefinedBenefitPlansAxis
1147	Defined benefit plans [member]	Member			ifrs-full:DefinedBenefitPlansMember
1148	Canadian	Member			ifrs-full:DomesticDefinedBenefitPlansMember
1149	Foreign	Member			ifrs-full:ForeignDefinedBenefitPlansMember
1150	Disclosure of defined benefit plans [line items]	LineItems			ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1151	Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption	Concept (Monetary)	As Of	Credit	ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
1152	Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption	Concept (Monetary)	As Of	Credit	ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
1153	2440410 - Disclosure - EMPLOYEE BENEFITS OBLIGATIONS - Expected Employer Contributions (Details)	Network	*	*	http://www.cae.com/role/EmployeeBenefitsObligationsExpectedEmployerContributionsDetails
1154	Disclosure of defined benefit plans [table]	Table	*	*	ifrs-full:DisclosureOfDefinedBenefitPlansTable
1155	Funding Arrangements Of Defined Benefit Plans [Axis]	Axis			cae:FundingArrangementsOfDefinedBenefitPlansAxis
1156	Funding Arrangements of Defined Benefits Plans [Domain]	Member			cae:FundingArrangementsOfDefinedBenefitPlansDomain
1157	Funded	Member			cae:WhollyOrPartlyFundedDefinedBenefitPlansMember
1158	Unfunded	Member			cae:WhollyUnfundedDefinedBenefitPlansMember
1159	Defined benefit plans [axis]	Axis			ifrs-full:DefinedBenefitPlansAxis
1160	Defined benefit plans [member]	Member			ifrs-full:DefinedBenefitPlansMember
1161	Canadian	Member			ifrs-full:DomesticDefinedBenefitPlansMember
1162	Foreign	Member			ifrs-full:ForeignDefinedBenefitPlansMember
1163	Disclosure of defined benefit plans [line items]	LineItems			ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1164	Estimate of contributions expected to be paid to plan for next annual reporting period	Concept (Monetary)	For Period	Credit	ifrs-full:EstimateOfContributionsExpectedToBePaidToPlan
1165	2443402 - Disclosure - DEFERRED GAINS AND OTHER NON-CURRENT LIABILITIES (Details)	Network	*	*	http://www.cae.com/role/DeferredGainsAndOtherNonCurrentLiabilitiesDetails
1166	Implied Table	Table	*	*	implied:Table
1167	Subclassifications of assets, liabilities and equities [abstract]	Abstract			ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
1168	Deferred gains on sale and leasebacks	Concept (Monetary)	As Of	Credit	cae:DeferredGainsArisingFromSaleAndLeasebackTransactions
1169	Deferred revenue	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredIncomeClassifiedAsNoncurrent
1170	Share-based compensation obligations	Concept (Monetary)	As Of	Credit	cae:LiabilitiesFromSharebasedCompensationObligation
1171	Contingent consideration arising on business combinations	Concept (Monetary)	As Of	Credit	ifrs-full:ContingentLiabilitiesRecognisedInBusinessCombination
1172	Interest payable	Concept (Monetary)	As Of	Credit	ifrs-full:InterestPayable
1173	Purchase options	Concept (Monetary)	As Of	Credit	cae:NoncurrentPurchaseOptions
1174	Other	Concept (Monetary)	As Of	Credit	cae:NoncurrentLiabilitiesMiscellaneous
1175	Other non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentLiabilities
1176	Amortization of deferred gains	Concept (Monetary)	For Period	Debit	cae:AmortizationOfDeferredGainsArisingFromSaleAndLeasebackTransactions
1177	2446402 - Disclosure - INCOME TAXES - Reconciliation of Income Taxes (Details)	Network	*	*	http://www.cae.com/role/IncomeTaxesReconciliationOfIncomeTaxesDetails
1178	Implied Table	Table	*	*	implied:Table
1179	Income Tax [Abstract]	Abstract			cae:IncomeTaxAbstract
1180	Earnings before income taxes	Concept (Monetary)	For Period	Credit	ifrs-full:AccountingProfit
1181	Canadian statutory income tax rates	Concept (Percent)	For Period		ifrs-full:ApplicableTaxRate
1182	Income taxes at Canadian statutory rates	Concept (Monetary)	For Period	Debit	ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
1183	Difference between Canadian and Foreign statutory rates	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectOfForeignTaxRates
1184	Unrecognized tax benefits	Concept (Monetary)	For Period	Debit	cae:TaxEffectOnUnrecognizedTaxBenefits
1185	Tax benefit of operating losses not previously recognized	Concept (Monetary)	For Period	Debit	cae:TaxEffectOnTaxBenefitOfOperatingLossesNotPreviouslyRecognized
1186	Non-taxable capital gain	Concept (Monetary)	For Period	Debit	cae:TaxEffectOnTaxBenefitOfNonTaxableCapitalGainLoss
1187	Tax impact on equity accounted investees	Concept (Monetary)	For Period	Debit	cae:TaxEffectOnTaxBenefitOfEquityMethodInvestments
1188	Non-deductible items	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1189	Prior years' tax adjustments and assessments	Concept (Monetary)	For Period	Debit	cae:TaxEffectOfPriorYearIncomeTaxes
1190	Impact of change in income tax rates on deferred income taxes	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectFromChangeInTaxRate
1191	Non-taxable research and development tax credits	Concept (Monetary)	For Period	Debit	cae:EffectiveIncomeTaxRateReconciliationNondeductibleExpenseResearchandDevelopmentAmount1
1192	Gain resulting from the remeasurement to fair value of the previously held interest in AACE	Concept (Monetary)	For Period	Credit	cae:GainlossRecognisedAsResultOfRemeasuringToFairValueEquityInterestInPreviouslyHeldInterest
1193	Other tax benefits not previously recognized	Concept (Monetary)	For Period	Debit	cae:TaxEffectOnTaxBenefitOfPreviouslyUnrecognizedOtherTaxBenefits
1194	Income tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
1195	2446403 - Disclosure - INCOME TAXES (Details)	Network	*	*	http://www.cae.com/role/IncomeTaxesDetails
1196	Disclosure of temporary difference, unused tax losses and unused tax credits [table]	Table	*	*	ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1197	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
1198	Equity [member]	Member			ifrs-full:EquityMember
1199	Accumulated other comprehensive income	Member			ifrs-full:AccumulatedOtherComprehensiveIncomeMember
1200	Disclosure of temporary difference, unused tax losses and unused tax credits [line items]	LineItems			ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1201	Canadian statutory income tax rates	Concept (Percent)	For Period		ifrs-full:ApplicableTaxRate
1202	Tax cuts and jobs act, change in tax rate	Concept (Monetary)	For Period	Debit	cae:TaxCutsandJobsActChangeinTaxRateIncomeTaxExpenseBenefit
1203	Deferred tax expense (income)	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseIncome
1204	Current period	Concept (Monetary)	For Period	Debit	ifrs-full:CurrentTaxExpenseIncome
1205	Temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements for which deferred tax liabilities have not been recognised	Concept (Monetary)	As Of		ifrs-full:TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures
1206	Deductible temporary differences for which no deferred tax asset is recognised	Concept (Monetary)	As Of		ifrs-full:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised
1207	Deductible temporary differences for which no deferred tax asset is recognised, period	Concept (xbrli:durationItemType)	For Period		cae:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognisedPeriod
1208	Accumulated capital losses for which no deferred tax asset is recognised	Concept (Monetary)	As Of	Debit	cae:AccumulatedCapitalLossesForWhichNoDeferredTaxAssetIsRecognised
1209	2446404 - Disclosure - INCOME TAXES - Components of the Provision for the Income Tax Expense (Details)	Network	*	*	http://www.cae.com/role/IncomeTaxesComponentsOfProvisionForIncomeTaxExpenseDetails
1210	Implied Table	Table	*	*	implied:Table
1211	Income Tax [Abstract]	Abstract			cae:IncomeTaxAbstract
1212	Current period	Concept (Monetary)	For Period	Debit	ifrs-full:CurrentTaxExpenseIncome
1213	Adjustment for prior years	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
1214	Tax benefit not previously recognized used to reduce the deferred tax expense	Concept (Monetary)	For Period	Credit	ifrs-full:TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceDeferredTaxExpense
1215	Impact of change in income tax rates on deferred income taxes	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseIncomeRelatingToTaxRateChangesOrImpositionOfNewTaxes
1216	Origination and reversal of temporary differences	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
1217	Income tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
1218	2446405 - Disclosure - INCOME TAXES - Movements In Temporary Differences (Details)	Network	*	*	http://www.cae.com/role/IncomeTaxesMovementsInTemporaryDifferencesDetails
1219	Disclosure of temporary difference, unused tax losses and unused tax credits [table]	Table	*	*	ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1220	Temporary difference, unused tax losses and unused tax credits [axis]	Axis			ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1221	Temporary difference, unused tax losses and unused tax credits [member]	Member			ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1222	Non-capital loss carryforwards	Member			ifrs-full:UnusedTaxLossesMember
1223	Intangible assets	Member			cae:IntangibleAssetsRelatedTemporaryDifferencesMember
1224	Amounts not currently deductible	Member			cae:AmountsNotCurrentlyDeductibleRelatedTemporaryDifferencesMember
1225	Deferred revenue	Member			cae:DeferredRevenueRelatedTemporaryDifferencesMember
1226	Tax benefit carryover	Member			cae:TaxBenefitCarryoverRelatedTemporaryDifferencesMember
1227	Unclaimed research and development expenditures	Member			cae:UnclaimedResearchAndDevelopmentExpendituresRelatedTemporaryDifferencesMember
1228	Investment tax credits	Member			cae:InvestmentTaxCreditsRelatedTemporaryDifferencesMember
1229	Property, plant and equipment	Member			cae:PropertyPlantAndEquipmentRelatedTemporaryDifferencesMember
1230	Unrealized (gains) losses on foreign exchange	Member			ifrs-full:UnrealisedForeignExchangeGainsLossesMember
1231	Financial instruments	Member			cae:FinancialInstrumentsRelatedTemporaryDifferencesMember
1232	Government participation	Member			cae:GovernmentParticipationRelatedTemporaryDifferencesMember
1233	Employee benefit plans	Member			cae:EmployeeBenefitPlansRelatedTemporaryDifferencesMember
1234	Percentage-of-completion versus completed contract	Member			cae:PercentageofCompletionVersusCompletedContractRelatedTemporaryDifferencesMember
1235	Other	Member			ifrs-full:OtherTemporaryDifferencesMember
1236	Disclosure of temporary difference, unused tax losses and unused tax credits [line items]	LineItems			ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1237	Deferred tax liability (asset), start	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilityAsset
1238	Deferred tax expense (income) recognised in profit or loss	Concept (Monetary)	For Period		ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1239	Income tax relating to components of other comprehensive income	Concept (Monetary)	For Period		ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
1240	Increase (decrease) through discontinued operation and transferred from assets held for sale	Concept (Monetary)	For Period	Credit	cae:IncreaseDecreaseThroughDiscontinuedOperationAndTransferredFromAssetsHeldForSale
1241	Increase (decrease) through business combinations, deferred tax liability (asset)	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset
1242	Increase (decrease) through net exchange differences, deferred tax liability (asset)	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset
1243	Deferred tax liability (asset), end	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilityAsset
1244	2446406 - Disclosure - INCOME TAXES - Non-capital Losses (Details)	Network	*	*	http://www.cae.com/role/IncomeTaxesNonCapitalLossesDetails
1245	Disclosure of temporary difference, unused tax losses and unused tax credits [table]	Table	*	*	ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1246	Tax Period [Axis]	Axis			cae:TaxPeriod1Axis
1247	Tax Period [Domain]	Member			cae:TaxPeriod1Domain
1248	Tax Year 2019	Member			cae:TaxYear2019Member
1249	Tax Year 2020	Member			cae:TaxYear2020Member
1250	Tax Year 2021	Member			cae:TaxYear2021Member
1251	Tax Year 2022	Member			cae:TaxYear2022Member
1252	Tax Year 2023	Member			cae:TaxYear2023Member
1253	Tax Year 2024	Member			cae:TaxYear2024Member
1254	Tax Year 2025 - 2038	Member			cae:TaxYear20242037Member
1255	No expiry date	Member			cae:IndefiniteTaxYearMember
1256	Disclosure of temporary difference, unused tax losses and unused tax credits [line items]	LineItems			ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1257	Unused tax losses for which no deferred tax asset recognised	Concept (Monetary)	As Of		ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
1258	Unused tax losses for which deferred tax asset recognised	Concept (Monetary)	As Of	Debit	cae:UnusedTaxLossesForWhichDeferredTaxAssetRecognised
1259	2449402 - Disclosure - SHARE CAPITAL, EARNINGS PER SHARE AND DIVIDENDS (Details)	Network	*	*	http://www.cae.com/role/ShareCapitalEarningsPerShareAndDividendsDetails
1260	Earnings per share [table]	Table	*	*	ifrs-full:EarningsPerShareTable
1261	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
1262	Equity [member]	Member			ifrs-full:EquityMember
1263	Retained earnings	Member			ifrs-full:RetainedEarningsMember
1264	Share Repurchase Program [Axis]	Axis			cae:ShareRepurchaseProgramType1Axis
1265	Share Repurchase Program [Domain]	Member			cae:ShareRepurchaseProgramType1Domain
1266	Private Share Repurchase Agreement	Member			cae:PrivateShareRepurchaseAgreementMember
1267	Earnings per share [line items]	LineItems			ifrs-full:EarningsPerShareLineItems
1268	Number of shares authorized to be repurchased renewal, shares	Concept (Shares)	As Of		cae:StockRepurchaseProgramNumberofSharesAuthorizedtobeRepurchased1
1269	Stock repurchased and retired during period, shares	Concept (Shares)	For Period		cae:StockRepurchasedandRetiredDuringPeriodShares1
1270	Stock repurchased and retired during period, per shares	Concept (Share)	For Period		cae:StockRepurchasedandRetiredDuringPeriodPerShare
1271	Repurchase of common shares	Concept (Monetary)	For Period	Debit	cae:StockRepurchasedandRetiredDuringPeriodValue1
1272	Number of shares issued and fully paid, shares	Concept (Shares)	As Of		ifrs-full:NumberOfSharesIssuedAndFullyPaid
1273	Antidilutive securities excluded from computation of earnings per share, shares	Concept (Shares)	For Period		cae:AntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareShares
1274	Dividends	Concept (Monetary)	For Period	Debit	cae:DividendsDeclared
1275	Dividends (in CAD per share)	Concept (Share)	For Period		cae:CommonStockDividendsDeclaredPerShare
1276	2449403 - Disclosure - SHARE CAPITAL, EARNINGS PER SHARE AND DIVIDENDS - Earnings per share computation (Details)	Network	*	*	http://www.cae.com/role/ShareCapitalEarningsPerShareAndDividendsEarningsPerShareComputationDetails
1277	Implied Table	Table	*	*	implied:Table
1278	Share Capital, Reserves And Other Equity Interest [Abstract]	Abstract			cae:ShareCapitalReservesAndOtherEquityInterestAbstract
1279	Weighted average number of common shares outstanding, shares	Concept (Shares)	For Period		ifrs-full:WeightedAverageShares
1280	Effect of dilutive stock options, shares	Concept (Shares)	For Period		ifrs-full:DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
1281	Weighted average number of common shares outstanding for diluted earnings per share calculation, shares	Concept (Shares)	For Period		ifrs-full:AdjustedWeightedAverageShares
1282	2452402 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (Details)	Network	*	*	http://www.cae.com/role/AccumulatedOtherComprehensiveIncomeDetails
1283	Disclosure of analysis of other comprehensive income by item [table]	Table	*	*	ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemTable
1284	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
1285	Equity [member]	Member			ifrs-full:EquityMember
1286	Foreign currency translation	Member			ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember
1287	Net change in cash flow hedges	Member			ifrs-full:ReserveOfCashFlowHedgesMember
1288	Net changes in available-for-sale financial instruments	Member			ifrs-full:ReserveOfGainsAndLossesOnRemeasuringAvailableforsaleFinancialAssetsMember
1289	Share in other comprehensive income of equity accounted investees	Member			ifrs-full:ReserveOfGainsAndLossesFromInvestmentsInEquityInstrumentsMember
1290	Accumulated other comprehensive income	Member			ifrs-full:AccumulatedOtherComprehensiveIncomeMember
1291	Disclosure of analysis of other comprehensive income by item [line items]	LineItems			ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems
1292	Balances, beginning of year	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
1293	OCI	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncome
1294	Balances, end of year	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
1295	2455402 - Disclosure - EMPLOYEE COMPENSATION (Details)	Network	*	*	http://www.cae.com/role/EmployeeCompensationDetails
1296	Implied Table	Table	*	*	implied:Table
1297	Employee Benefits [Abstract]	Abstract			cae:EmployeeBenefitsAbstract
1298	Salaries and other short-term employee benefits	Concept (Monetary)	For Period	Debit	ifrs-full:WagesAndSalaries
1299	Share-based payments, net of equity swap	Concept (Monetary)	For Period	Debit	cae:ExpenseFromSharebasedPaymentTransactionsWithEmployeesNetOfEquitySwap
1300	Post-employment benefits � defined benefit plans	Concept (Monetary)	For Period	Debit	ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
1301	Post-employment benefits � defined contribution plans	Concept (Monetary)	For Period	Debit	ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
1302	Termination benefits	Concept (Monetary)	For Period	Debit	ifrs-full:TerminationBenefitsExpense
1303	Total employee compensation expense	Concept (Monetary)	For Period	Debit	ifrs-full:EmployeeBenefitsExpense
1304	2458402 - Disclosure - IMPAIRMENT OF NONFINANCIAL ASSETS - Changes In Goodwill (Details)	Network	*	*	http://www.cae.com/role/ImpairmentOfNonfinancialAssetsChangesInGoodwillDetails
1305	Disclosure of reconciliation of changes in goodwill [table]	Table	*	*	ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillTable
1306	Classes of intangible assets and goodwill [axis]	Axis			ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
1307	Intangible assets and goodwill [member]	Member			ifrs-full:IntangibleAssetsAndGoodwillMember
1308	Goodwill	Member			ifrs-full:GoodwillMember
1309	Segments [axis]	Axis			ifrs-full:SegmentsAxis
1310	Segments [member]	Member			ifrs-full:SegmentsMember
1311	Civil Aviation Training Solutions	Member			cae:CivilAviationTrainingSolutionsMember
1312	Defense and Security	Member			cae:DefenseandSecurityMember
1313	Healthcare	Member			cae:HealthcareMember
1314	Disclosure of reconciliation of changes in goodwill [line items]	LineItems			ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillLineItems
1315	Goodwill, start	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
1316	Acquisition of subsidiaries	Concept (Monetary)	For Period	Debit	ifrs-full:AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill
1317	Disposal and remeasurement of interest in investment	Concept (Monetary)	For Period	Credit	cae:DisposalAndRemeasurementOfInterestInInvestment
1318	Exchange differences	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill
1319	Goodwill, end	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
1320	2458403 - Disclosure - IMPAIRMENT OF NONFINANCIAL ASSETS (Details)	Network	*	*	http://www.cae.com/role/ImpairmentOfNonfinancialAssetsDetails
1321	Disclosure of reconciliation of changes in goodwill [table]	Table	*	*	ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillTable
1322	Segments [axis]	Axis			ifrs-full:SegmentsAxis
1323	Segments [member]	Member			ifrs-full:SegmentsMember
1324	Civil Aviation Training Solutions, Defense and Security and Healthcare	Member			cae:CivilAviationTrainingSolutionsDefenseandSecurityandHealthcareMember
1325	Range [axis]	Axis			ifrs-full:RangeAxis
1326	Ranges [member]	Member			ifrs-full:RangesMember
1327	Bottom of range	Member			ifrs-full:BottomOfRangeMember
1328	Top of range	Member			ifrs-full:TopOfRangeMember
1329	Disclosure of reconciliation of changes in goodwill [line items]	LineItems			ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillLineItems
1330	Growth rate used to extrapolate cash flow projections, period	Concept (xbrli:durationItemType)	For Period		cae:GrowthRateUsedToExtrapolateCashFlowProjectionsPeriod
1331	Growth rate used to extrapolate cash flow projections	Concept (Percent)	As Of		ifrs-full:DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections
1332	Discount rate applied to cash flow projections	Concept (Percent)	As Of		ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections
1333	2461402 - Disclosure - OTHER GAINS - NET - Gains (Details)	Network	*	*	http://www.cae.com/role/OtherGainsNetGainsDetails
1334	Implied Table	Table	*	*	implied:Table
1335	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1336	Disposal of property, plant and equipment	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnDisposalsOfPropertyPlantAndEquipment
1337	Net foreign exchange gains	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
1338	Net loss on litigation	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnLitigationSettlements
1339	Disposal of interest in investment	Concept (Monetary)	For Period	Credit	ifrs-full:GainsOnDisposalsOfInvestments
1340	Remeasurement of investment, net of reorganization and others costs	Concept (Monetary)	For Period	Credit	cae:GainLossesOnRemeasurementOfEquityMethodInvestments
1341	Other	Concept (Monetary)	For Period	Credit	ifrs-full:MiscellaneousOtherOperatingIncome
1342	Other gains � net	Concept (Monetary)	For Period	Credit	ifrs-full:OtherGainsLosses
1343	2461403 - Disclosure - OTHER GAINS - NET (Details)	Network	*	*	http://www.cae.com/role/OtherGainsNetDetails
1344	Disclosure of detailed information about business combination [table]	Table	*	*	ifrs-full:DisclosureOfBusinessCombinationsTable
1345	Classes of intangible assets and goodwill [axis]	Axis			ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
1346	Intangible assets and goodwill [member]	Member			ifrs-full:IntangibleAssetsAndGoodwillMember
1347	Goodwill	Member			ifrs-full:GoodwillMember
1348	Classes of assets [axis]	Axis			ifrs-full:ClassesOfAssetsAxis
1349	Assets [member]	Member			ifrs-full:ClassesOfAssetsMember
1350	Investments accounted for using equity method	Member			ifrs-full:InvestmentsAccountedForUsingEquityMethodMember
1351	Business combinations [axis]	Axis			ifrs-full:BusinessCombinationsAxis
1352	Entity's total for business combinations [member]	Member			ifrs-full:EntitysTotalForBusinessCombinationsMember
1353	Asian Aviation Centre of Excellence Sdn. Bhd.	Member			cae:AsianAviationCentreofExcellenceSdn.Bhd.Member
1354	Joint ventures [axis]	Axis			ifrs-full:JointVenturesAxis
1355	Entity's total for joint ventures [member]	Member			ifrs-full:EntitysTotalForJointVenturesMember
1356	Zhuhai Xiang Yi Aviation Technology Company Limited	Member			cae:ZhuhaiXiangYiAviationTechnologyCompanyLimitedMember
1357	Asian Aviation Centre of Excellence Sdn. Bhd.	Member			cae:AsianAviationCentreofExcellenceSdn.Bhd.Member
1358	Disclosure of detailed information about business combination [line items]	LineItems			ifrs-full:DisclosureOfBusinessCombinationsLineItems
1359	Equity method investment sold, percentage	Concept (Percent)	For Period		cae:EquityMethodInvestmentSoldPercent
1360	Proceeds from sale of investments	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod
1361	Disposals, goodwill	Concept (Monetary)	For Period	Credit	ifrs-full:DisposalsIntangibleAssetsAndGoodwill
1362	Impairment loss	Concept (Monetary)	For Period	Debit	ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
1363	Gains (losses) on disposals of investments	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnDisposalsOfInvestments
1364	Proportion of ownership interest in joint venture	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInJointVenture
1365	Proportion of ownership interest in subsidiary	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInSubsidiary
1366	Gain (loss) recognised as result of remeasuring to fair value equity interest in previously held interest	Concept (Monetary)	For Period	Credit	ifrs-full:GainLossRecognisedAsResultOfRemeasuringToFairValueEquityInterestInAcquireeHeldByAcquirerBeforeBusinessCombination
1367	Remeasurement of equity method investments, costs	Concept (Monetary)	For Period	Debit	cae:RemeasurementOfEquityMethodInvestmentsCosts
1368	Restructuring, integration and acquisition costs	Concept (Monetary)	For Period	Debit	cae:RestructuringIntegrationAndAcquisitionCosts
1369	Decrease through write-off, assets	Concept (Monetary)	For Period	Debit	ifrs-full:ImpairmentLoss
1370	Remeasurement of investment, net of reorganization and others costs	Concept (Monetary)	For Period	Credit	cae:GainLossesOnRemeasurementOfEquityMethodInvestments
1371	Reorganization and other costs	Concept (Monetary)	For Period	Debit	cae:ReorganizationAndOtherCosts
1372	Gain (losses) on remeasurement of equity method investments, net of costs	Concept (Monetary)	For Period	Credit	cae:GainLossOnRemeasurementOfEquityMethodInvestmentsNetOfReorganizationCosts
1373	2464402 - Disclosure - FINANCE EXPENSE - NET (Details)	Network	*	*	http://www.cae.com/role/FinanceExpenseNetDetails
1374	Implied Table	Table	*	*	implied:Table
1375	Analysis of income and expense [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1376	Finance expense:	Abstract			cae:FinancecostsAbstract
1377	Long-term debt (other than finance leases)	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpenseOnBorrowings
1378	Finance leases	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpenseOnFinanceLeases
1379	Royalty obligations	Concept (Monetary)	For Period	Debit	cae:RoyaltyObligation
1380	Employee benefits obligations	Concept (Monetary)	For Period	Debit	cae:EmployeeBenefitsObligation
1381	Financing cost amortization	Concept (Monetary)	For Period	Debit	cae:AmortizationOfFinancingCost
1382	Other	Concept (Monetary)	For Period	Debit	ifrs-full:OtherFinanceCost
1383	Borrowing costs capitalized	Concept (Monetary)	For Period		ifrs-full:BorrowingCostsCapitalised
1384	Finance expense	Concept (Monetary)	For Period	Debit	ifrs-full:FinanceCosts
1385	Finance income:	Abstract			cae:FinanceincomeAbstract
1386	Loans and finance lease contracts	Concept (Monetary)	For Period	Credit	cae:FinanceIncomeOnLoansAndFinanceLeaseContracts
1387	Other	Concept (Monetary)	For Period	Credit	ifrs-full:OtherFinanceIncome
1388	Finance income	Concept (Monetary)	For Period	Credit	ifrs-full:FinanceIncome
1389	Finance expense � net	Concept (Monetary)	For Period	Credit	ifrs-full:FinanceIncomeCost
1390	Capitalisation rate of borrowing costs eligible for capitalisation	Concept (Percent)	For Period		ifrs-full:CapitalisationRateOfBorrowingCostsEligibleForCapitalisation
1391	2467402 - Disclosure - SHARE-BASED PAYMENTS - Share-based Compensation Cost (Details)	Network	*	*	http://www.cae.com/role/ShareBasedPaymentsShareBasedCompensationCostDetails
1392	Disclosure of terms and conditions of share-based payment arrangement [table]	Table	*	*	ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1393	Types of share-based payment arrangements [axis]	Axis			ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1394	Share-based payment arrangements [member]	Member			ifrs-full:SharebasedPaymentArrangementsMember
1395	Employee Stock Purchase Plan (ESPP)	Member			cae:EmployeeStockPurchasePlanESPPMember
1396	Deferred Share Unit (DSU)	Member			cae:DeferredShareUnitDSUMember
1397	Long-Term Incentive � Deferred Share Unit Plan (LTI-DSU)	Member			cae:LongTermIncentiveDeferredShareUnitPlanLTIDSUMember
1398	Long-Term Incentive � Time Based Restricted Share Unit Plan (LTI-TB RSU)	Member			cae:LongTermIncentiveTimeBasedRestrictedShareUnitPlanLTITBRSUMember
1399	Long-Term Incentive � Performance Share Unit Plan (LTI-PSU)	Member			cae:LongTermIncentivePerformanceShareUnitPlanLTIPSUMember
1400	Cash-Settled Share-Based Payment Arrangement	Member			cae:CashSettledShareBasedPaymentArrangementMember
1401	Employee Stock Option Plan	Member			cae:EmployeeStockOptionPlanMember
1402	Equity-Settled Share-Based Payment Arrangement	Member			cae:EquitySettledShareBasedPaymentArrangementMember
1403	Disclosure of terms and conditions of share-based payment arrangement [line items]	LineItems			ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1404	Expense from cash-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseFromCashsettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
1405	Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
1406	Recognized in the consolidated statement of financial position	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
1407	Share-based compensation obligations	Concept (Monetary)	As Of	Credit	ifrs-full:LiabilitiesFromSharebasedPaymentTransactions2011
1408	2467403 - Disclosure - SHARE-BASED PAYMENTS (Details)	Network	*	*	http://www.cae.com/role/ShareBasedPaymentsDetails
1409	Disclosure of terms and conditions of share-based payment arrangement [table]	Table	*	*	ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1410	Vesting [Axis]	Axis			cae:VestingPeriod1Axis
1411	Vesting [Domain]	Member			cae:VestingPeriod1Domain
1412	Options issued before March 31, 2011	Member			cae:SharebasedCompensationAwardTrancheOneMember
1413	Year 1	Member			cae:SharebasedCompensationAwardTrancheTwoMember
1414	Year 2	Member			cae:SharebasedCompensationAwardTrancheThreeMember
1415	Year 3	Member			cae:SharebasedCompensationAwardTrancheFourMember
1416	Final year vesting	Member			cae:SharebasedCompensationAwardTrancheFiveMember
1417	Range [axis]	Axis			ifrs-full:RangeAxis
1418	Ranges [member]	Member			ifrs-full:RangesMember
1419	Top of range	Member			ifrs-full:TopOfRangeMember
1420	Bottom of range	Member			ifrs-full:BottomOfRangeMember
1421	Classes of assets [axis]	Axis			ifrs-full:ClassesOfFinancialAssetsAxis
1422	Assets [member]	Member			ifrs-full:FinancialAssetsMember
1423	Equity swap agreements	Member			cae:EquitySwapAgreementsMember
1424	Types of share-based payment arrangements [axis]	Axis			ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1425	Share-based payment arrangements [member]	Member			ifrs-full:SharebasedPaymentArrangementsMember
1426	Employee Stock Option Plan	Member			cae:EmployeeStockOptionPlanMember
1427	Employee Stock Purchase Plan (ESPP)	Member			cae:EmployeeStockPurchasePlanESPPMember
1428	Executive Deferred Share Unit (EDSU)	Member			cae:ExecutiveDeferredShareUnitEDSUMember
1429	Deferred Share Unit (DSU)	Member			cae:DeferredShareUnitDSUMember
1430	Long Term Incentive Time Based Plan	Member			cae:LongTermIncentiveTimeBasedPlanMember
1431	Long-Term Incentive � Deferred Share Unit Plan (LTI-DSU)	Member			cae:LongTermIncentiveDeferredShareUnitPlanLTIDSUMember
1432	Long-Term Incentive � Time Based Restricted Share Unit Plan (LTI-TB RSU)	Member			cae:LongTermIncentiveTimeBasedRestrictedShareUnitPlanLTITBRSUMember
1433	Long-Term Incentive Performance Based Plan	Member			cae:LongTermIncentivePerformanceBasedPlanMember
1434	Long-Term Incentive � Restricted Share Unit Plan (LTI-RSU)	Member			cae:LongTermIncentiveRestrictedShareUnitPlanLTIRSUMember
1435	Long-Term Incentive � Performance Share Unit Plan (LTI-PSU)	Member			cae:LongTermIncentivePerformanceShareUnitPlanLTIPSUMember
1436	Disclosure of terms and conditions of share-based payment arrangement [line items]	LineItems			ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1437	Allocation of recognized period costs, capitalized amount	Concept (Monetary)	For Period	Debit	cae:EmployeeServiceSharebasedCompensationAllocationofRecognizedPeriodCostsCapitalizedAmount1
1438	Hedging, number of financial institutions	Concept (Integer)	For Period		cae:HedgingNumberofFinancialInstitutions
1439	Hedging recovery, recognized	Concept (Monetary)	For Period	Credit	cae:HedgingRecoveryRecognized
1440	Subscription price, percentage	Concept (Percent)	For Period		cae:SubscriptionPricePercentage
1441	Number of shares (in shares)	Concept (Shares)	As Of		cae:SharebasedCompensationArrangementbySharebasedPaymentAwardNumberofSharesAvailableforGrant1
1442	Exercisable options, period	Concept (xbrli:durationItemType)	For Period		cae:ExercisableOptionsPeriod
1443	Not exercisable options, grant date, period	Concept (xbrli:durationItemType)	For Period		cae:NotExercisableOptionsGrantDatePeriod
1444	Exercisable options, grant date, period	Concept (xbrli:durationItemType)	For Period		cae:ExercisableOptionsGrantDatePeriod
1445	Weighted average market share price	Concept (Share)	For Period		cae:WeightedAverageSharePriceForShareOptionsInSharebasedPaymentArrangementAverageMarketPrice
1446	Share-based payments	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
1447	Employer matching contribution, matching, percentage	Concept (Percent)	For Period		cae:DefinedContributionPlanEmployerMatchingContributionPercent2
1448	Employer matching contribution, percent of employees' gross pay	Concept (Percent)	For Period		cae:DefinedContributionPlanEmployerMatchingContributionPercentofMatch1
1449	Number of days prior to incentive compensation, payable to executives	Concept (xbrli:durationItemType)	For Period		cae:NumberofDaysPriorToIncentiveCompensationPayableToExecutives
1450	Value of executive deferred share unit (edsu), shares	Concept (Shares)	For Period		cae:ValueofExecutiveDeferredShareUnitEDSUShares
1451	Value of deferred share unit (dsu), shares	Concept (Shares)	For Period		cae:ValueofDeferredShareUnitDSUShares
1452	Number of days prior to issuance of deferred shares units	Concept (xbrli:durationItemType)	For Period		cae:NumberofDaysPriorToIssuanceofDeferredSharesUnits
1453	Number of long-term incentive time based plans	Concept (Integer)	For Period		cae:NumberofLongTermIncentiveTimeBasedPlans
1454	Value of long-term incentive time based plans, shares (in shares)	Concept (Shares)	For Period		cae:ValueofLongTermIncentiveTimeBasedPlansShares
1455	Number of long-term incentive time based plans no longer granted	Concept (Integer)	For Period		cae:NumberofLongTermIncentiveTimeBasedPlansNoLongerGranted
1456	Vesting period	Concept (xbrli:durationItemType)	For Period		cae:SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingPeriod1
1457	Number of long-term incentive performance based plans	Concept (Integer)	For Period		cae:NumberofLongTermIncentivePerformanceBasedPlans
1458	Number of long-term incentive performance based plans no longer granted	Concept (Integer)	For Period		cae:NumberofLongTermIncentivePerformanceBasedPlansNoLongerGranted
1459	Performance criteria, percentage	Concept (Percent)	For Period		cae:PerformanceCriteriaPercentage
1460	Vesting period	Concept (Percent)	For Period		cae:SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingPercentage
1461	2467404 - Disclosure - SHARE-BASED PAYMENTS - ESOP Activity (Details)	Network	*	*	http://www.cae.com/role/ShareBasedPaymentsEsopActivityDetails
1462	Disclosure of terms and conditions of share-based payment arrangement [table]	Table	*	*	ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1463	Types of share-based payment arrangements [axis]	Axis			ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1464	Share-based payment arrangements [member]	Member			ifrs-full:SharebasedPaymentArrangementsMember
1465	Employee Stock Option Plan	Member			cae:EmployeeStockOptionPlanMember
1466	Disclosure of terms and conditions of share-based payment arrangement [line items]	LineItems			ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1467	Options outstanding, beginning of year (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOutstandingShareOptions
1468	Granted (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1469	Exercised (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1470	Forfeited (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
1471	Options outstanding, end of year (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOutstandingShareOptions
1472	Exercisable (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
1473	Options outstanding, beginning of year	Concept (Monetary)	As Of		ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
1474	Granted	Concept (Monetary)	For Period		ifrs-full:WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement
1475	Exercised	Concept (Monetary)	For Period		ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement
1476	Forfeited	Concept (Monetary)	For Period		ifrs-full:WeightedAverageExercisePriceOfShareOptionsForfeitedInSharebasedPaymentArrangement
1477	Options outstanding, end of year	Concept (Monetary)	As Of		ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
1478	Exercisable	Concept (Monetary)	As Of		ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement
1479	2467405 - Disclosure - SHARE-BASED PAYMENTS - ESOP Summarized (Details)	Network	*	*	http://www.cae.com/role/ShareBasedPaymentsEsopSummarizedDetails
1480	Disclosure of range of exercise prices of outstanding share options [table]	Table	*	*	ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable
1481	Range [axis]	Axis			ifrs-full:RangeAxis
1482	Ranges [member]	Member			ifrs-full:RangesMember
1483	Bottom of range	Member			ifrs-full:BottomOfRangeMember
1484	Top of range	Member			ifrs-full:TopOfRangeMember
1485	Ranges of exercise prices for outstanding share options [axis]	Axis			ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsAxis
1486	Ranges of exercise prices for outstanding share options [member]	Member			ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsMember
1487	$9.60 to $11.02	Member			cae:ExercisePriceRangeOneMember
1488	$12.65 to $14.66	Member			cae:ExercisePriceRangeTwoMember
1489	$15.00 to $16.15	Member			cae:ExercisePriceRangeThreeMember
1490	$20.86 to $22.26	Member			cae:ExercisePriceRangeFourMember
1491	Types of share-based payment arrangements [axis]	Axis			ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1492	Share-based payment arrangements [member]	Member			ifrs-full:SharebasedPaymentArrangementsMember
1493	Employee Stock Option Plan	Member			cae:EmployeeStockOptionPlanMember
1494	Disclosure of range of exercise prices of outstanding share options [line items]	LineItems			ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems
1495	Exercise price	Concept (Monetary)	As Of		ifrs-full:ExercisePriceOfOutstandingShareOptions
1496	Number of share options outstanding	Concept (Decimal)	As Of		ifrs-full:NumberOfOutstandingShareOptions
1497	Weighted average remaining contractual life	Concept (xbrli:durationItemType)	For Period		cae:WeightedAverageRemainingContractualLifeOfOutstandingShareOptionsPeriod
1498	Weighted average exercise price	Concept (Monetary)	As Of		ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
1499	Exercisable (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
1500	Exercisable	Concept (Monetary)	As Of		ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement
1501	2467406 - Disclosure - SHARE-BASED PAYMENTS - Assumptions (Details)	Network	*	*	http://www.cae.com/role/ShareBasedPaymentsAssumptionsDetails
1502	Implied Table	Table	*	*	implied:Table
1503	Share-based Payment Arrangements [Abstract]	Abstract			cae:SharebasedPaymentArrangementsAbstract
1504	Weighted average share price	Concept (Monetary)	For Period		ifrs-full:WeightedAverageSharePriceShareOptionsGranted
1505	Exercise price	Concept (Monetary)	For Period		ifrs-full:ExercisePriceShareOptionsGranted
1506	Dividend yield	Concept (Percent)	For Period		ifrs-full:ExpectedDividendAsPercentageShareOptionsGranted
1507	Expected volatility	Concept (Percent)	For Period		ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
1508	Risk-free interest rate	Concept (Percent)	For Period		ifrs-full:DescriptionOfRiskFreeInterestRateShareOptionsGranted
1509	Expected option term	Concept (xbrli:durationItemType)	For Period		cae:OptionLifeShareOptionsGrantedPeriod
1510	Weighted average fair value option granted	Concept (Monetary)	As Of	Credit	ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
1511	2467407 - Disclosure - SHARE-BASED PAYMENTS - DSU Activity (Details)	Network	*	*	http://www.cae.com/role/ShareBasedPaymentsDsuActivityDetails
1512	Disclosure of terms and conditions of share-based payment arrangement [table]	Table	*	*	ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1513	Types of share-based payment arrangements [axis]	Axis			ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1514	Share-based payment arrangements [member]	Member			ifrs-full:SharebasedPaymentArrangementsMember
1515	Deferred Share Unit (DSU)	Member			cae:DeferredShareUnitDSUMember
1516	Disclosure of terms and conditions of share-based payment arrangement [line items]	LineItems			ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1517	Units outstanding, beginning of year (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1518	Units granted (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1519	Units redeemed (in shares)	Concept (Shares)	As Of		cae:NumberOfOtherEquityInstrumentsRedeemedInSharebasedPaymentArrangement
1520	Dividends paid in units (in shares)	Concept (Decimal)	For Period		cae:NumberOfOtherEquityInstrumentsDividendsPaidInSharebasedPaymentArrangement
1521	Units outstanding, end of year (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1522	Units vested, end of year (in shares)	Concept (Decimal)	As Of		cae:NumberOfOtherEquityInstrumentsVestedInSharebasedPaymentArrangement
1523	2467408 - Disclosure - SHARE-BASED PAYMENTS - LTI Activity (Details)	Network	*	*	http://www.cae.com/role/ShareBasedPaymentsLtiActivityDetails
1524	Disclosure of terms and conditions of share-based payment arrangement [table]	Table	*	*	ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1525	Types of share-based payment arrangements [axis]	Axis			ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1526	Share-based payment arrangements [member]	Member			ifrs-full:SharebasedPaymentArrangementsMember
1527	Long-Term Incentive � Deferred Share Unit Plan (LTI-DSU)	Member			cae:LongTermIncentiveDeferredShareUnitPlanLTIDSUMember
1528	Long-Term Incentive � Time Based Restricted Share Unit Plan (LTI-TB RSU)	Member			cae:LongTermIncentiveTimeBasedRestrictedShareUnitPlanLTITBRSUMember
1529	Disclosure of terms and conditions of share-based payment arrangement [line items]	LineItems			ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1530	Units outstanding, beginning of year (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1531	Units granted (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1532	Units cancelled (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
1533	Units redeemed (in shares)	Concept (Shares)	As Of		cae:NumberOfOtherEquityInstrumentsRedeemedInSharebasedPaymentArrangement
1534	Dividends paid in units (in shares)	Concept (Decimal)	For Period		cae:NumberOfOtherEquityInstrumentsDividendsPaidInSharebasedPaymentArrangement
1535	Units outstanding, end of year (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1536	Units vested, end of year (in shares)	Concept (Decimal)	As Of		cae:NumberOfOtherEquityInstrumentsVestedInSharebasedPaymentArrangement
1537	2467409 - Disclosure - SHARE-BASED PAYMENTS - TSR Relative Performance Index (Details)	Network	*	*	http://www.cae.com/role/ShareBasedPaymentsTsrRelativePerformanceIndexDetails
1538	Disclosure of terms and conditions of share-based payment arrangement [table]	Table	*	*	ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1539	TSR Quartile [Axis]	Axis			cae:TSRQuartileAxis
1540	TSR Quartile [Domain]	Member			cae:TSRQuartileDomain
1541	First Quartile	Member			cae:FirstQuartileMember
1542	Two Quartile	Member			cae:TwoQuartileMember
1543	Three Quartile	Member			cae:ThreeQuartileMember
1544	Fourth Quartile	Member			cae:FourthQuartileMember
1545	Range [axis]	Axis			ifrs-full:RangeAxis
1546	Ranges [member]	Member			ifrs-full:RangesMember
1547	Bottom of range	Member			ifrs-full:BottomOfRangeMember
1548	Top of range	Member			ifrs-full:TopOfRangeMember
1549	Disclosure of terms and conditions of share-based payment arrangement [line items]	LineItems			ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1550	Percentile percentage	Concept (Percent)	For Period		cae:TSRPercentilePercentage
1551	Factor percentage	Concept (Percent)	For Period		cae:TSRFactorPercentage
1552	2467410 - Disclosure - SHARE-BASED PAYMENTS - LTI-PSU Activity (Details)	Network	*	*	http://www.cae.com/role/ShareBasedPaymentsLtiPsuActivityDetails
1553	Disclosure of terms and conditions of share-based payment arrangement [table]	Table	*	*	ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1554	Types of share-based payment arrangements [axis]	Axis			ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1555	Share-based payment arrangements [member]	Member			ifrs-full:SharebasedPaymentArrangementsMember
1556	Long-Term Incentive � Restricted Share Unit Plan (LTI-RSU)	Member			cae:LongTermIncentiveRestrictedShareUnitPlanLTIRSUMember
1557	Long-Term Incentive � Performance Share Unit Plan (LTI-PSU)	Member			cae:LongTermIncentivePerformanceShareUnitPlanLTIPSUMember
1558	Disclosure of terms and conditions of share-based payment arrangement [line items]	LineItems			ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1559	Units outstanding, beginning of year (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1560	Units granted (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1561	Units cancelled (in shares)	Concept (Decimal)	For Period		ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
1562	Units redeemed (in shares)	Concept (Shares)	As Of		cae:NumberOfOtherEquityInstrumentsRedeemedInSharebasedPaymentArrangement
1563	Units outstanding, end of year (in shares)	Concept (Decimal)	As Of		ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1564	Units vested, end of year (in shares)	Concept (Decimal)	As Of		cae:NumberOfOtherEquityInstrumentsVestedInSharebasedPaymentArrangement
1565	2470402 - Disclosure - SUPPLEMENTARY CASH FLOWS INFORMATION (Details)	Network	*	*	http://www.cae.com/role/SupplementaryCashFlowsInformationDetails
1566	Implied Table	Table	*	*	implied:Table
1567	Cash Flow Statement [Abstract]	Abstract			cae:CashFlowStatementAbstract
1568	Accounts receivable	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
1569	Contracts in progress: assets	Concept (Monetary)	For Period	Debit	cae:AdjustmentsForDecreaseIncreaseDueFromCustomersForContractWorkAsAsset
1570	Inventories	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
1571	Prepayments	Concept (Monetary)	For Period	Debit	cae:AdjustmentsForDecreaseIncreaseInPrepayments
1572	Income taxes recoverable	Concept (Monetary)	For Period	Debit	cae:AdjustmentsForDecreaseincreaseInIncomeTaxesRecoverable
1573	Accounts payable and accrued liabilities	Concept (Monetary)	For Period	Debit	cae:AdjustmentsForDecreaseIncreaseToAccountsPayableAndAccruedLiabilities
1574	Provisions	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForProvisions
1575	Income taxes payable	Concept (Monetary)	For Period	Debit	cae:AdjustmentsForDecreaseIncreaseToIncomeTaxesPayable
1576	Deferred revenue	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForIncreaseDecreaseInDeferredIncome
1577	Contracts in progress: liabilities	Concept (Monetary)	For Period	Debit	cae:AdjustmentsForIncreaseDecreaseDueToCustomersForContractWorkAsLiability
1578	Changes in non-cash working capital	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseInWorkingCapital
1579	2476402 - Disclosure - COMMITMENTS (Details)	Network	*	*	http://www.cae.com/role/CommitmentsDetails
1580	Disclosure of finance lease and operating lease by lessee [table]	Table	*	*	ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
1581	Maturity [axis]	Axis			ifrs-full:MaturityAxis
1582	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
1583	No later than 1 year	Member			ifrs-full:NotLaterThanOneYearMember
1584	Later than 1 year and no later than 5 years	Member			ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1585	Later than 5 years	Member			ifrs-full:LaterThanFiveYearsMember
1586	Disclosure of finance lease and operating lease by lessee [line items]	LineItems			ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
1587	Expected future minimum lease payments payable under non-cancellable operating lease	Concept (Monetary)	As Of	Credit	ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
1588	Rental expense	Concept (Monetary)	For Period	Debit	ifrs-full:RentalExpense
1589	Contractual capital commitments	Concept (Monetary)	As Of	Credit	ifrs-full:ContractualCapitalCommitments
1590	2479402 - Disclosure - CAPITAL RISK MANAGEMENT (Details)	Network	*	*	http://www.cae.com/role/CapitalRiskManagementDetails
1591	Implied Table	Table	*	*	implied:Table
1592	Capital Risk Management [Abstract]	Abstract			cae:CapitalRiskManagementAbstract
1593	Long-term debt	Concept (Monetary)	As Of	Credit	cae:LongtermDebtGross
1594	Less: cash and cash equivalents	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
1595	Net debt	Concept (Monetary)	As Of	Credit	cae:NonCurrentBorrowingsLessCashandCashEquivalents
1596	Equity	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
1597	Total net debt plus equity	Concept (Monetary)	As Of	Credit	cae:NonCurrentBorrowingsLessCashandCashEquivalentsPlusEquity
1598	Net debt: equity	Concept (Pure)	As Of		cae:NetDebttoEquityRatio
1599	2482402 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Details)	Network	*	*	http://www.cae.com/role/FairValueOfFinancialInstrumentsDetails
1600	Disclosure of fair value measurement of assets [table]	Table	*	*	ifrs-full:DisclosureOfFairValueMeasurementOfAssetsTable
1601	Income Statement Location [Axis]	Axis			cae:IncomeStatementLocation1Axis
1602	Income Statement Location [Domain]	Member			cae:IncomeStatementLocation1Domain
1603	Income	Member			cae:ProfitLossMember
1604	Other comprehensive income	Member			ifrs-full:AccumulatedOtherComprehensiveIncomeMember
1605	Categories of financial assets [axis]	Axis			ifrs-full:CategoriesOfFinancialAssetsAxis
1606	Financial assets, category [member]	Member			ifrs-full:FinancialAssetsCategoryMember
1607	Financial assets at fair value through profit or loss, category	Member			ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1608	Financial assets at fair value through other comprehensive income	Member			ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
1609	Loans and receivables	Member			ifrs-full:LoansAndReceivablesCategoryMember
1610	Financial assets available-for-sale	Member			ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
1611	Categories of financial liabilities [axis]	Axis			ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1612	Financial liabilities, category [member]	Member			ifrs-full:FinancialLiabilitiesCategoryMember
1613	Financial liabilities at fair value through profit or loss, category [member]	Member			ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
1614	Financial liability at fair value through other comprehensive income	Member			cae:FinancialliabilityatfairvaluethroughothercomprehensiveincomecategoryMember
1615	Financial liabilities at amortised cost	Member			ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
1616	Classes of liabilities [axis]	Axis			ifrs-full:ClassesOfLiabilitiesAxis
1617	Liabilities [member]	Member			ifrs-full:LiabilitiesMember
1618	Forward foreign currency contracts	Member			cae:ForwardForeignCurrencyContractsMember
1619	Contingent consideration arising on business combinations	Member			cae:ContingentConsiderationArisingOnBusinessCombinationsMember
1620	Interest Rate Swap Agreements	Member			cae:InterestRateSwapAgreementsMember
1621	Accounts payable and accrued liabilities	Member			cae:AccountsPayableandAccruedLiabilitiesMember
1622	Total long-term debt	Member			cae:LongTermDebt1Member
1623	Other non-current liabilities	Member			cae:OtherNonCurrentLiabilitiesMember
1624	Classes of assets [axis]	Axis			ifrs-full:ClassesOfAssetsAxis
1625	Assets [member]	Member			ifrs-full:ClassesOfAssetsMember
1626	Cash and cash equivalents	Member			cae:CashAndCashEquivalents1Member
1627	Restricted cash	Member			cae:RestrictedCashMember
1628	Embedded foreign currency derivatives	Member			cae:EmbeddedForeignCurrencyDerivativesMember
1629	Equity swap agreements	Member			cae:EquitySwapAgreementsMember
1630	Forward foreign currency contracts	Member			cae:ForwardForeignCurrencyContractsMember
1631	Foreign currency swap agreements	Member			cae:ForeignCurrencySwapAgreementsMember
1632	Accounts receivable	Member			ifrs-full:TradeReceivablesMember
1633	Contracts in progress: assets	Member			cae:AssetsContractsinProgressMember
1634	Investment in finance leases	Member			cae:InvestmentInFinanceLeasesMember
1635	Advances to a portfolio investment	Member			cae:AdvancestoaPortfolioInvestmentMember
1636	Other assets	Member			ifrs-full:OtherAssetsMember
1637	Levels of fair value hierarchy [axis]	Axis			ifrs-full:LevelsOfFairValueHierarchyAxis
1638	All levels of fair value hierarchy [member]	Member			ifrs-full:AllLevelsOfFairValueHierarchyMember
1639	Level 1	Member			ifrs-full:Level1OfFairValueHierarchyMember
1640	Level 2	Member			ifrs-full:Level2OfFairValueHierarchyMember
1641	Level 3	Member			ifrs-full:Level3OfFairValueHierarchyMember
1642	Disclosure of fair value measurement of assets [line items]	LineItems			ifrs-full:DisclosureOfFairValueMeasurementOfAssetsLineItems
1643	Financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:FinancialAssets
1644	Financial assets, at fair value	Concept (Monetary)	As Of	Debit	ifrs-full:FinancialAssetsAtFairValue
1645	Financial liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:FinancialLiabilities
1646	Financial liabilities, at fair value	Concept (Monetary)	As Of	Credit	ifrs-full:FinancialLiabilitiesAtFairValue
1647	Financial assets (liabilities)	Concept (Monetary)	As Of	Debit	cae:FinancialAssetsLiabilities
1648	Financial assets (liabilities), at fair value	Concept (Monetary)	As Of	Debit	cae:FinancialAssetsLiabilitiesAtFairValue
1649	Changes in Level 3 Financial Instruments [Roll Forward]	Abstract			cae:ChangesinLevel3FinancialInstrumentsRollForward
1650	Financial assets (liabilities), beginning	Concept (Monetary)	As Of	Debit	cae:FinancialAssetsLiabilities
1651	Financial assets (liabilities), realized and unrealized (losses) gain	Concept (Monetary)	For Period	Debit	cae:FinancialAssetsLiabilitiesRealizedandUnrealizedLossesGain
1652	Financial assets (liabilities), issued and settled	Concept (Monetary)	For Period	Debit	cae:FinancialAssetsLiabilitiesIssuedandSettled
1653	Financial assets (liabilities), end	Concept (Monetary)	As Of	Debit	cae:FinancialAssetsLiabilities
1654	2485402 - Disclosure - FINANCIAL RISK MANAGEMENT (Details)	Network	*	*	http://www.cae.com/role/FinancialRiskManagementDetails
1655	Disclosure of maturity analysis for financial assets held for managing liquidity risk [table]	Table	*	*	ifrs-full:DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable
1656	Types of hedges [axis]	Axis			ifrs-full:TypesOfHedgesAxis
1657	Hedges [member]	Member			ifrs-full:TypesOfHedgesMember
1658	Hedges Of Net Investment In US Entities	Member			cae:HedgesOfNetInvestmentInUSEntitiesMember
1659	Type of Debt Instrument [Axis]	Axis			cae:TypeofDebtInstrumentAxis
1660	Type of Debt Instrument [Domain]	Member			cae:TypeofDebtInstrumentDomain
1661	Multi-Tranche Private Placement Debt, Tranche One, December 2024	Member			cae:MultiTranchePrivatePlacementDebtTrancheOneDecember2024Member
1662	Multi-Tranche Private Placement Debt, Tranche Two, December 2027	Member			cae:MultiTranchePrivatePlacementDebtTrancheTwoDecember2027Member
1663	Currency Pairing [Axis]	Axis			cae:CurrencyPairingAxis
1664	Currency Pairing [Domain]	Member			cae:CurrencyPairingDomain
1665	USD/GBP	Member			cae:USDGBPMember
1666	USD/CDN	Member			cae:USDCDNMember
1667	Types of risks [axis]	Axis			ifrs-full:TypesOfRisksAxis
1668	Risks [member]	Member			ifrs-full:TypesOfRisksMember
1669	Currency risk	Member			ifrs-full:CurrencyRiskMember
1670	Interest rate risk	Member			ifrs-full:InterestRateRiskMember
1671	Classes of financial instruments [axis]	Axis			ifrs-full:ClassesOfFinancialInstrumentsAxis
1672	Financial instruments, class [member]	Member			ifrs-full:ClassesOfFinancialInstrumentsMember
1673	Foreign currency swap agreements	Member			cae:ForeignCurrencySwapAgreementsMember
1674	Equity swap agreements	Member			cae:EquitySwapAgreementsMember
1675	Maturity [axis]	Axis			ifrs-full:MaturityAxis
1676	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
1677	Fiscal Year 2020	Member			cae:FiscalYear2020Member
1678	Fiscal Year 2023	Member			cae:FiscalYear2023Member
1679	Borrowings by name [axis]	Axis			ifrs-full:BorrowingsByNameAxis
1680	Borrowings by name [member]	Member			ifrs-full:BorrowingsByNameMember
1681	Revolving Unsecured Term Credit Facility, September 2022	Member			cae:RevolvingUnsecuredTermCreditFacilitySeptember2022Member
1682	Senior Notes	Member			cae:SeniorNotes1Member
1683	Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]	LineItems			ifrs-full:DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskLineItems
1684	Line of credit facility, maximum borrowing capacity	Concept (Monetary)	As Of	Credit	cae:LineofCreditFacilityMaximumBorrowingCapacity1
1685	Line of credit facility, maximum borrowing capacity option	Concept (Monetary)	As Of	Credit	cae:LineofCreditFacilityMaximumBorrowingCapacityOption
1686	Accounts receivable, maximum amount available to sell	Concept (Monetary)	As Of	Credit	cae:AccountsReceivableMaximumAmountAvailabletoSell
1687	Accounts receivable, amount sold to financial institution	Concept (Monetary)	As Of	Credit	cae:AccountsReceivableAmountSoldToFinancialInstitution
1688	Accounts receivable, amount sold to financial institution, fees	Concept (Monetary)	For Period	Credit	cae:AccountsReceivableAmountSoldToFinancialInstitutionFees
1689	Number of derivative agreements entered into	Concept (Integer)	As Of		cae:NumberofDerivativeAgreementsEnteredInTo
1690	Derivative, notional amount	Concept (Monetary)	As Of		invest:DerivativeNotionalAmount
1691	Number of tranches relating to the multi-tranche private placement debt offering	Concept (Integer)	For Period		cae:NumberOfTranchesRelatingToTheMultitranchePrivatePlacementDebtOffering
1692	Foreign currency strengthening change	Concept (Percent)	As Of		cae:SensitivityAnalysisToForeignCurrencyRateChange
1693	Interest rate swap agreements, number of financial institutions	Concept (Integer)	As Of		cae:InterestRateSwapAgreementsNumberofFinancialInstitutions
1694	Debt, fixed interest rate	Concept (Percent)	As Of		cae:PercentageOfDebtFixedInterestRate
1695	Sensitivity analysis to interest rate change	Concept (Percent)	For Period		cae:SensitivityAnalysisToInterestRateChange
1696	Net income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
1697	Other comprehensive income (loss)	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncome
1698	Equity swap agreement, common shares (in shares)	Concept (Shares)	For Period		cae:EquitySwapAgreementCommonShares
1699	Borrowings	Concept (Monetary)	As Of	Credit	ifrs-full:Borrowings
1700	Gross finance lease obligations	Concept (Monetary)	As Of	Credit	ifrs-full:GrossFinanceLeaseObligations
1701	Letters of credit and guarantees, net	Concept (Monetary)	As Of	Credit	cae:LettersOfCreditAndGuaranteesNet
1702	Sale and leaseback transactions, maximum exposure	Concept (Monetary)	As Of	Credit	cae:SaleAndLeasebackTransactionsMaximumExposure
1703	Deferred gains on sale and leasebacks	Concept (Monetary)	As Of	Credit	cae:DeferredGainsArisingFromSaleAndLeasebackTransactions.UnderlyingEquipment
1704	2485403 - Disclosure - FINANCIAL RISK MANAGEMENT - Maturity Analysis (Details)	Network	*	*	http://www.cae.com/role/FinancialRiskManagementMaturityAnalysisDetails
1705	Disclosure of maturity analysis for non-derivative financial liabilities [table]	Table	*	*	ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesTable
1706	Classes of financial instruments [axis]	Axis			ifrs-full:ClassesOfFinancialInstrumentsAxis
1707	Financial instruments, class [member]	Member			ifrs-full:ClassesOfFinancialInstrumentsMember
1708	Forward foreign currency contracts	Member			cae:ForwardForeignCurrencyContractsMember
1709	Forward foreign currency contracts, outflow	Member			cae:ForwardForeignCurrencyContractsOutflowMember
1710	Forward foreign currency contracts, inflow	Member			cae:ForwardForeignCurrencyContractsInflowMember
1711	Swap derivatives	Member			cae:SwapDerivativesMember
1712	Embedded foreign currency derivatives	Member			cae:EmbeddedForeignCurrencyDerivativesMember
1713	Equity swap agreements	Member			cae:EquitySwapAgreementsMember
1714	Balance Sheet Location [Axis]	Axis			cae:BalanceSheetLocation1Axis
1715	Balance Sheet Location [Domain]	Member			cae:BalanceSheetLocation1Domain
1716	Accounts payable and accrued liabilities	Member			cae:AccountsPayableandAccruedLiabilitiesMember
1717	Long-term debt	Member			ifrs-full:LongtermBorrowingsMember
1718	Other non-current liabilities	Member			cae:OtherNonCurrentLiabilitiesMember
1719	Maturity [axis]	Axis			ifrs-full:MaturityAxis
1720	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
1721	0-12 Months	Member			ifrs-full:NotLaterThanOneYearMember
1722	13-24 Months	Member			ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1723	25-36 Months	Member			ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1724	37-48 Months	Member			ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1725	49-60 Months	Member			ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
1726	Thereafter	Member			ifrs-full:LaterThanFiveYearsMember
1727	Disclosure of maturity analysis for non-derivative financial liabilities [line items]	LineItems			ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
1728	Non-derivative financial liabilities, carrying amount	Concept (Monetary)	As Of	Credit	cae:NonderivativeFinancialLiabilitiesCarryingAmount
1729	Non-derivative financial liabilities, undiscounted cash flows	Concept (Monetary)	As Of	Credit	ifrs-full:NonderivativeFinancialLiabilitiesUndiscountedCashFlows
1730	Derivative financial instruments, carrying amount	Concept (Monetary)	As Of	Credit	cae:DerivativeFinancialInstrumentsCarryingAmount
1731	Derivative financial instruments, undiscounted cash flows	Concept (Monetary)	As Of	Credit	cae:DerivativeFinancialInstrumentsUndiscountedCashFlows
1732	Non-derivative financial liabilities and derivative financial instruments, carrying amount	Concept (Monetary)	As Of	Credit	cae:NonderivativeFinancialLiabilitiesAndDerivativeFinancialInstrumentsCarryingAmount
1733	Non-derivative financial liabilities and derivative financial instruments, undiscounted cash flows	Concept (Monetary)	As Of	Credit	cae:NonderivativeFinancialLiabilitiesAndDerivativeFinancialInstrumentsUndiscountedCashFlow
1734	2485404 - Disclosure - FINANCIAL RISK MANAGEMENT - Forward Foreign Currency Contracts (Details)	Network	*	*	http://www.cae.com/role/FinancialRiskManagementForwardForeignCurrencyContractsDetails
1735	Disclosure of risk management strategy related to hedge accounting [table]	Table	*	*	ifrs-full:DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingTable
1736	Currency Pairing [Axis]	Axis			cae:CurrencyPairingAxis
1737	Currency Pairing [Domain]	Member			cae:CurrencyPairingDomain
1738	USD/CDN	Member			cae:USDCDNMember
1739	CDN/EUR	Member			cae:CDNEURMember
1740	EUR/CDN	Member			cae:EURCDNMember
1741	GBP/CDN	Member			cae:GBPCDNMember
1742	CDN/GBP	Member			cae:CDNGBPMember
1743	CDN/USD	Member			cae:CDNUSDMember
1744	GBP/USD	Member			cae:GBPUSDMember
1745	Other Currencies	Member			cae:OtherCurrenciesMember
1746	Maturity [axis]	Axis			ifrs-full:MaturityAxis
1747	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
1748	No later than 1 year	Member			ifrs-full:NotLaterThanOneYearMember
1749	Between 1 and 3 years	Member			ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
1750	Between 3 and 5 years	Member			ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
1751	Types of risks [axis]	Axis			ifrs-full:TypesOfRisksAxis
1752	Risks [member]	Member			ifrs-full:TypesOfRisksMember
1753	Currency risk	Member			ifrs-full:CurrencyRiskMember
1754	Disclosure of risk management strategy related to hedge accounting [line items]	LineItems			ifrs-full:DisclosureOfRiskManagementStrategyRelatedToHedgeAccountingLineItems
1755	Risk exposure associated with instruments sharing characteristic	Concept (Monetary)	As Of		ifrs-full:RiskExposureAssociatedWithInstrumentsSharingCharacteristic
1756	Average foreign exchange rate	Concept (Decimal)	For Period		ifrs-full:AverageForeignExchangeRate
1757	2485405 - Disclosure - FINANCIAL RISK MANAGEMENT - Net Income and Other Comprehensive Income (Details)	Network	*	*	http://www.cae.com/role/FinancialRiskManagementNetIncomeAndOtherComprehensiveIncomeDetails
1758	Disclosure of sensitivity analysis for actuarial assumptions [table]	Table	*	*	ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable
1759	Currency Pairing [Axis]	Axis			cae:CurrencyPairingAxis
1760	Currency Pairing [Domain]	Member			cae:CurrencyPairingDomain
1761	USD/CDN	Member			cae:USDCDNMember
1762	EUR/CDN	Member			cae:EURCDNMember
1763	GBP/CDN	Member			cae:GBPCDNMember
1764	Types of risks [axis]	Axis			ifrs-full:TypesOfRisksAxis
1765	Risks [member]	Member			ifrs-full:TypesOfRisksMember
1766	Currency risk	Member			ifrs-full:CurrencyRiskMember
1767	Disclosure of sensitivity analysis for actuarial assumptions [line items]	LineItems			ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
1768	Net income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
1769	Other comprehensive income (loss)	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncome
1770	2485406 - Disclosure - FINANCIAL RISK MANAGEMENT - Letters Of Credit And Guarantees (Details)	Network	*	*	http://www.cae.com/role/FinancialRiskManagementLettersOfCreditAndGuaranteesDetails
1771	Implied Table	Table	*	*	implied:Table
1772	Disclosure of notes and other explanatory information [Abstract]	Abstract			cae:DisclosureofnotesandotherexplanatoryinformationAbstract
1773	Advance payment	Concept (Monetary)	As Of	Credit	cae:AdvancePayments
1774	Contract performance	Concept (Monetary)	As Of	Credit	cae:ContractPerformance
1775	Lease obligations	Concept (Monetary)	As Of	Credit	cae:LeaseObligation
1776	Financial obligations	Concept (Monetary)	As Of	Credit	cae:FinancialObligations
1777	Other	Concept (Monetary)	As Of	Credit	cae:LettersOfCreditAndGuaranteesOther
1778	Letters of credit and guarantees, net	Concept (Monetary)	As Of	Credit	cae:LettersOfCreditAndGuaranteesNet
1779	2488402 - Disclosure - OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION (Details)	Network	*	*	http://www.cae.com/role/OperatingSegmentsAndGeographicInformationDetails
1780	Implied Table	Table	*	*	implied:Table
1781	Disclosure of operating segments [abstract]	Abstract			ifrs-full:DisclosureOfOperatingSegmentsAbstract
1782	Number of operating segments	Concept (Integer)	For Period		cae:NumberOfOperatingSegments1
1783	2488403 - Disclosure - OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION - Results by segment (Details)	Network	*	*	http://www.cae.com/role/OperatingSegmentsAndGeographicInformationResultsBySegmentDetails
1784	Disclosure of operating segments [table]	Table	*	*	ifrs-full:DisclosureOfOperatingSegmentsTable
1785	Segment consolidation items [axis]	Axis			ifrs-full:SegmentConsolidationItemsAxis
1786	Entity's total for segment consolidation items [member]	Member			ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
1787	Operating segments	Member			ifrs-full:OperatingSegmentsMember
1788	Segments [axis]	Axis			ifrs-full:SegmentsAxis
1789	Segments [member]	Member			ifrs-full:SegmentsMember
1790	Civil Aviation Training Solutions	Member			cae:CivilAviationTrainingSolutionsMember
1791	Defense and Security	Member			cae:DefenseandSecurityMember
1792	Healthcare	Member			cae:HealthcareMember
1793	Disclosure of operating segments [line items]	LineItems			ifrs-full:DisclosureOfOperatingSegmentsLineItems
1794	Revenue	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
1795	Depreciation and amortization expense, property, plant and equipment	Concept (Monetary)	For Period	Debit	cae:DepreciationandAmortizationExpensePropertyPlantandEquipment
1796	Depreciation and amortization expense, intangible and other assets	Concept (Monetary)	For Period	Debit	cae:DepreciationandAmortizationExpenseIntangibleandOtherAssets
1797	Impairment loss on non-financial assets	Concept (Monetary)	For Period	Debit	cae:ImpairmentLossOnNonFinancialAssets
1798	Write-downs (reversals of write-downs) of inventories	Concept (Monetary)	For Period	Debit	ifrs-full:WritedownsReversalsOfInventories
1799	Impairment loss (reversal of impairment loss) recognised in profit or loss, trade receivables	Concept (Monetary)	For Period	Debit	ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeReceivables
1800	After tax share in profit of equity accounted investees	Concept (Monetary)	For Period	Credit	ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1801	Segment operating income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromOperatingActivities
1802	2488404 - Disclosure - OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION - Capital Expenditures (Details)	Network	*	*	http://www.cae.com/role/OperatingSegmentsAndGeographicInformationCapitalExpendituresDetails
1803	Disclosure of operating segments [table]	Table	*	*	ifrs-full:DisclosureOfOperatingSegmentsTable
1804	Segment consolidation items [axis]	Axis			ifrs-full:SegmentConsolidationItemsAxis
1805	Entity's total for segment consolidation items [member]	Member			ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
1806	Operating segments	Member			ifrs-full:OperatingSegmentsMember
1807	Segments [axis]	Axis			ifrs-full:SegmentsAxis
1808	Segments [member]	Member			ifrs-full:SegmentsMember
1809	Civil Aviation Training Solutions	Member			cae:CivilAviationTrainingSolutionsMember
1810	Defense and Security	Member			cae:DefenseandSecurityMember
1811	Healthcare	Member			cae:HealthcareMember
1812	Disclosure of operating segments [line items]	LineItems			ifrs-full:DisclosureOfOperatingSegmentsLineItems
1813	Payments to acquire productive assets	Concept (Monetary)	For Period	Credit	cae:PaymentstoAcquireProductiveAssets
1814	2488405 - Disclosure - OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION - Operating Profit (Details)	Network	*	*	http://www.cae.com/role/OperatingSegmentsAndGeographicInformationOperatingProfitDetails
1815	Disclosure of operating segments [table]	Table	*	*	ifrs-full:DisclosureOfOperatingSegmentsTable
1816	Segment consolidation items [axis]	Axis			ifrs-full:SegmentConsolidationItemsAxis
1817	Entity's total for segment consolidation items [member]	Member			ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
1818	Operating segments	Member			ifrs-full:OperatingSegmentsMember
1819	Disclosure of operating segments [line items]	LineItems			ifrs-full:DisclosureOfOperatingSegmentsLineItems
1820	Segment operating income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromOperatingActivities
1821	Restructuring, integration and acquisition costs	Concept (Monetary)	For Period	Debit	cae:RestructuringIntegrationAndAcquisitionCosts
1822	2488406 - Disclosure - OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION - Assets And Liabilities Employed By Segment (Details)	Network	*	*	http://www.cae.com/role/OperatingSegmentsAndGeographicInformationAssetsAndLiabilitiesEmployedBySegmentDetails
1823	Disclosure of operating segments [table]	Table	*	*	ifrs-full:DisclosureOfOperatingSegmentsTable
1824	Segment consolidation items [axis]	Axis			ifrs-full:SegmentConsolidationItemsAxis
1825	Entity's total for segment consolidation items [member]	Member			ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
1826	Operating segments	Member			ifrs-full:OperatingSegmentsMember
1827	Unallocated amounts	Member			ifrs-full:UnallocatedAmountsMember
1828	Segments [axis]	Axis			ifrs-full:SegmentsAxis
1829	Segments [member]	Member			ifrs-full:SegmentsMember
1830	Civil Aviation Training Solutions	Member			cae:CivilAviationTrainingSolutionsMember
1831	Defense and Security	Member			cae:DefenseandSecurityMember
1832	Healthcare	Member			cae:HealthcareMember
1833	Disclosure of operating segments [line items]	LineItems			ifrs-full:DisclosureOfOperatingSegmentsLineItems
1834	Assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
1835	Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
1836	2488407 - Disclosure - OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION - Products and Services Information (Details)	Network	*	*	http://www.cae.com/role/OperatingSegmentsAndGeographicInformationProductsAndServicesInformationDetails
1837	Disclosure of operating segments [table]	Table	*	*	ifrs-full:DisclosureOfOperatingSegmentsTable
1838	Products and services [axis]	Axis			ifrs-full:ProductsAndServicesAxis
1839	Products and services [member]	Member			ifrs-full:ProductsAndServicesMember
1840	Simulation Products [Member]	Member			cae:SimulationProductsMember
1841	Training and Services [Member]	Member			cae:TrainingandServicesMember
1842	Disclosure of operating segments [line items]	LineItems			ifrs-full:DisclosureOfOperatingSegmentsLineItems
1843	Revenue	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
1844	2488408 - Disclosure - OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION - Geographic information (Details)	Network	*	*	http://www.cae.com/role/OperatingSegmentsAndGeographicInformationGeographicInformationDetails
1845	Disclosure of operating segments [table]	Table	*	*	ifrs-full:DisclosureOfOperatingSegmentsTable
1846	Geographical areas [axis]	Axis			ifrs-full:GeographicalAreasAxis
1847	Geographical areas [member]	Member			ifrs-full:GeographicalAreasMember
1848	CANADA	Member			country:CA
1849	UNITED STATES	Member			country:US
1850	BRAZIL	Member			country:BR
1851	UNITED KINGDOM	Member			country:GB
1852	GERMANY	Member			country:DE
1853	LUXEMBOURG	Member			country:LU
1854	NETHERLANDS	Member			country:NL
1855	Other European Countries	Member			cae:OtherEuropeanCountriesMember
1856	MALAYSIA	Member			country:MY
1857	UNITED ARAB EMIRATES	Member			country:AE
1858	CHINA	Member			country:CN
1859	Other Asian Countries	Member			cae:OtherAsianCountriesMember
1860	AUSTRALIA	Member			country:AU
1861	Other Countries	Member			cae:OtherCountriesMember
1862	Disclosure of operating segments [line items]	LineItems			ifrs-full:DisclosureOfOperatingSegmentsLineItems
1863	Revenue	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
1864	Non-current assets other than financial instruments and deferred tax assets	Concept (Monetary)	As Of	Debit	cae:NoncurrentAssetsOtherThanFinancialInstrumentsandDeferredTaxAssets
1865	2491402 - Disclosure - RELATED PARTY RELATIONSHIPS (Details)	Network	*	*	http://www.cae.com/role/RelatedPartyRelationshipsDetails
1866	Disclosure of transactions between related parties [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1867	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1868	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
1869	Asian Aviation Centre of Excellence Sdn. Bhd.	Member			cae:AACEVietnamLimitedLiabilityCompanyMember
1870	CAE Kuala Lumpur Sdn Bdh	Member			cae:CAEKualaLumpurSdnBdhMember
1871	Asian Aviation Centre of Excellence (Singapore) Pte Ltd	Member			cae:AsianAviationCentreofExcellenceSingaporePteLtdMember
1872	CAE (UK) plc	Member			cae:CAEUKplcMember
1873	CAE (US) Inc.	Member			cae:CAEUSInc.Member
1874	CAE Aircrew Training Services plc	Member			cae:CAEAircrewTrainingServicesplcMember
1875	CAE Australia Pty Ltd.	Member			cae:CAEAustraliaPtyLtd.Member
1876	CAE Aviation Services Pte Ltd.	Member			cae:CAEAviationServicesPteLtd.Member
1877	CAE Aviation Training B.V.	Member			cae:CAEAviationTrainingB.V.Member
1878	CAE Aviation Training Chile Limitada	Member			cae:CAEAviationTrainingChileLimitadaMember
1879	CAE Aviation Training Peru S.A.	Member			cae:CAEAviationTrainingPeruS.A.Member
1880	CAE Brunei Multi Purpose Training Centre Sdn Bhd	Member			cae:CAEBruneiMultiPurposeTrainingCentreSdnBhdMember
1881	CAE Center Amsterdam B.V.	Member			cae:CAECenterAmsterdamB.V.Member
1882	CAE Center Brussels N.V.	Member			cae:CAECenterBrusselsN.V.Member
1883	CAE Centre Copenhagen A/S	Member			cae:CAECentreCopenhagenASMember
1884	CAE Centre Hong Kong Limited	Member			cae:CAECentreHongKongLimitedMember
1885	CAE Centre Oslo AS	Member			cae:CAECentreOsloASMember
1886	CAE Centre Stockholm AB	Member			cae:CAECentreStockholmABMember
1887	CAE CFT B.V.	Member			cae:CAECFTB.V.Member
1888	CAE CFT Korea Ltd.	Member			cae:CAECFTKoreaLtd.Member
1889	CAE Civil Aviation Training Solutions, Inc.	Member			cae:CAECivilAviationTrainingSolutionsInc.Member
1890	CAE Electronik GmbH	Member			cae:CAEElectronikGmbHMember
1891	CAE Euroco S.� r.l.	Member			cae:CAEEurocoS.r.l.Member
1892	CAE Flight & Simulator Services Sdn. Bhd.	Member			cae:CAEFlightSimulatorServicesSdn.Bhd.Member
1893	CAE Flight Training Center Mexico, S.A. de C.V.	Member			cae:CAEFlightTrainingCenterMexicoS.A.deC.V.Member
1894	CAE Global Academy �vora, SA	Member			cae:CAEGlobalAcademyvoraSAMember
1895	CAE Healthcare Canada Inc.	Member			cae:CAEHealthcareCanadaInc.Member
1896	CAE Healthcare, Inc.	Member			cae:CAEHealthcareInc.Member
1897	CAE Holdings Limited	Member			cae:CAEHoldingsLimitedMember
1898	CAE India Private Limited	Member			cae:CAEIndiaPrivateLimitedMember
1899	CAE Integrated Enterprise Solutions Australia Pty Ltd.	Member			cae:CAEIntegratedEnterpriseSolutionsAustraliaPtyLtd.Member
1900	CAE International Holdings Limited	Member			cae:CAEInternationalHoldingsLimitedMember
1901	CAE Luxembourg Acquisition S.� r.l.	Member			cae:CAELuxembourgAcquisitionS.r.l.Member
1902	CAE Luxembourg Financing S.� r.l.	Member			cae:CAELuxembourgFinancingS.r.l.Member
1903	CAE Maritime Middle East LLC	Member			cae:CAEMaritimeMiddleEastLLCMember
1904	CAE Middle East L.L.C.	Member			cae:CAEMiddleEastL.L.C.Member
1905	CAE Military Aviation Training Inc.	Member			cae:CAEMilitaryAviationTrainingInc.Member
1906	CAE New Zealand Pty Ltd.	Member			cae:CAENewZealandPtyLtd.Member
1907	CAE North East Training Inc.	Member			cae:CAENorthEastTrainingInc.Member
1908	CAE Oxford Aviation Academy Amsterdam B.V.	Member			cae:CAEOxfordAviationAcademyAmsterdamB.V.Member
1909	CAE Oxford Aviation Academy Phoenix Inc.	Member			cae:CAEOxfordAviationAcademyPhoenixInc.Member
1910	CAE Services Italia S.r.l.	Member			cae:CAEServicesItaliaS.r.l.Member
1911	CAE Servicios Globales de Instrucci�n de Vuelo (Espa�a), S.L.	Member			cae:CAEServiciosGlobalesdeInstruccindeVueloEspaaS.L.Member
1912	CAE Shanghai Company, Limited	Member			cae:CAEShanghaiCompanyLimitedMember
1913	CAE SimuFlite Inc.	Member			cae:CAESimuFliteInc.Member
1914	CAE Simulation Technologies Private Limited	Member			cae:CAESimulationTechnologiesPrivateLimitedMember
1915	CAE Simulator Services Inc.	Member			cae:CAESimulatorServicesInc.Member
1916	CAE Singapore (S.E.A.) Pte Ltd.	Member			cae:CAESingaporeS.E.A.PteLtd.Member
1917	CAE South America Flight Training do Brasil Ltda.	Member			cae:CAESouthAmericaFlightTrainingdoBrasilLtda.Member
1918	CAE STS Limited	Member			cae:CAESTSLimitedMember
1919	CAE Training & Services Brussels NV	Member			cae:CAETrainingServicesBrusselsNVMember
1920	CAE Training & Services UK Ltd.	Member			cae:CAETrainingServicesUKLtd.Member
1921	CAE Training Norway AS	Member			cae:CAETrainingNorwayASMember
1922	CAE USA Inc.	Member			cae:CAEUSAInc.Member
1923	CAE Verwaltungsgesellschaft mbH	Member			cae:CAEVerwaltungsgesellschaftmbHMember
1924	Flight Simulator-Capital L.P.	Member			cae:FlightSimulatorCapitalL.P.Member
1925	Oxford Aviation Academy (Oxford) Limited	Member			cae:OxfordAviationAcademyOxfordLimitedMember
1926	Parc Aviation Limited	Member			cae:ParcAviationLimitedMember
1927	Parc Aviation Engineering Services Ltd	Member			cae:ParcAviationEngineeringServicesLtdMember
1928	Parc Aviation UK Ltd	Member			cae:ParcAviationUKLtdMember
1929	Parc Interim Limited	Member			cae:ParcInterimLimitedMember
1930	Presagis Canada Inc.	Member			cae:PresagisCanadaInc.Member
1931	Presagis Europe (S.A.)	Member			cae:PresagisEuropeS.A.Member
1932	Presagis USA Inc.	Member			cae:PresagisUSAInc.Member
1933	Servicios de Instrucci�n de Vuelo, S.L.	Member			cae:ServiciosdeInstruccindeVueloS.L.Member
1934	SIM-Industries Brasil Administracao de Centros de Treinamento Ltda.	Member			cae:SIMIndustriesBrasilAdministracaodeCentrosdeTreinamentoLtda.Member
1935	SIV Ops Training, S.L.	Member			cae:SIVOpsTrainingS.L.Member
1936	Joint ventures [axis]	Axis			ifrs-full:JointVenturesAxis
1937	Entity's total for joint ventures [member]	Member			ifrs-full:EntitysTotalForJointVenturesMember
1938	Asian Aviation Centre of Excellence Sdn. Bhd.	Member			cae:AsianAviationCentreofExcellenceSdn.Bhd.Member
1939	CAE (UK) plc	Member			cae:CAEUKplcMember
1940	CAE (US) Inc.	Member			cae:CAEUSInc.Member
1941	CAE Aircrew Training Services plc	Member			cae:CAEAircrewTrainingServicesplcMember
1942	CAE Australia Pty Ltd.	Member			cae:CAEAustraliaPtyLtd.Member
1943	CAE Aviation Services Pte Ltd.	Member			cae:CAEAviationServicesPteLtd.Member
1944	CAE Aviation Training B.V.	Member			cae:CAEAviationTrainingB.V.Member
1945	CAE Aviation Training Chile Limitada	Member			cae:CAEAviationTrainingChileLimitadaMember
1946	CAE Aviation Training Peru S.A.	Member			cae:CAEAviationTrainingPeruS.A.Member
1947	CAE Brunei Multi Purpose Training Centre Sdn Bhd	Member			cae:CAEBruneiMultiPurposeTrainingCentreSdnBhdMember
1948	CAE Center Amsterdam B.V.	Member			cae:CAECenterAmsterdamB.V.Member
1949	CAE Center Brussels N.V.	Member			cae:CAECenterBrusselsN.V.Member
1950	CAE Centre Copenhagen A/S	Member			cae:CAECentreCopenhagenASMember
1951	CAE Centre Hong Kong Limited	Member			cae:CAECentreHongKongLimitedMember
1952	CAE Centre Oslo AS	Member			cae:CAECentreOsloASMember
1953	CAE Centre Stockholm AB	Member			cae:CAECentreStockholmABMember
1954	CAE CFT B.V.	Member			cae:CAECFTB.V.Member
1955	CAE CFT Korea Ltd.	Member			cae:CAECFTKoreaLtd.Member
1956	CAE Civil Aviation Training Solutions, Inc.	Member			cae:CAECivilAviationTrainingSolutionsInc.Member
1957	CAE Delaware Buyco Inc.	Member			cae:CAEDelawareBuycoInc.Member
1958	CAE Electronik GmbH	Member			cae:CAEElectronikGmbHMember
1959	CAE Euroco S.� r.l.	Member			cae:CAEEurocoS.r.l.Member
1960	CAE Flight & Simulator Services Sdn. Bhd.	Member			cae:CAEFlightSimulatorServicesSdn.Bhd.Member
1961	CAE Flight Training Center Mexico, S.A. de C.V.	Member			cae:CAEFlightTrainingCenterMexicoS.A.deC.V.Member
1962	CAE Global Academy �vora, SA	Member			cae:CAEGlobalAcademyvoraSAMember
1963	CAE Healthcare Canada Inc.	Member			cae:CAEHealthcareCanadaInc.Member
1964	CAE Healthcare, Inc.	Member			cae:CAEHealthcareInc.Member
1965	CAE Holdings Limited	Member			cae:CAEHoldingsLimitedMember
1966	CAE India Private Limited	Member			cae:CAEIndiaPrivateLimitedMember
1967	CAE Integrated Enterprise Solutions Australia Pty Ltd.	Member			cae:CAEIntegratedEnterpriseSolutionsAustraliaPtyLtd.Member
1968	CAE International Holdings Limited	Member			cae:CAEInternationalHoldingsLimitedMember
1969	CAE Investments S.� r.l.	Member			cae:CAEInvestmentsS.r.l.Member
1970	CAE Luxembourg Acquisition S.� r.l.	Member			cae:CAELuxembourgAcquisitionS.r.l.Member
1971	CAE Luxembourg Financing S.� r.l.	Member			cae:CAELuxembourgFinancingS.r.l.Member
1972	CAE Management Luxembourg S.� r.l.	Member			cae:CAEManagementLuxembourgS.r.l.Member
1973	CAE Maritime Middle East LLC	Member			cae:CAEMaritimeMiddleEastLLCMember
1974	CAE Middle East L.L.C.	Member			cae:CAEMiddleEastL.L.C.Member
1975	CAE Military Aviation Training Inc.	Member			cae:CAEMilitaryAviationTrainingInc.Member
1976	CAE New Zealand Pty Ltd.	Member			cae:CAENewZealandPtyLtd.Member
1977	CAE North East Training Inc.	Member			cae:CAENorthEastTrainingInc.Member
1978	CAE Oxford Aviation Academy Phoenix Inc.	Member			cae:CAEOxfordAviationAcademyPhoenixInc.Member
1979	CAE Services Italia S.r.l.	Member			cae:CAEServicesItaliaS.r.l.Member
1980	CAE Servicios Globales de Instrucci�n de Vuelo (Espa�a), S.L.	Member			cae:CAEServiciosGlobalesdeInstruccindeVueloEspaaS.L.Member
1981	CAE Shanghai Company, Limited	Member			cae:CAEShanghaiCompanyLimitedMember
1982	CAE SimuFlite Inc.	Member			cae:CAESimuFliteInc.Member
1983	CAE Simulation Technologies Private Limited	Member			cae:CAESimulationTechnologiesPrivateLimitedMember
1984	CAE Simulator Services Inc.	Member			cae:CAESimulatorServicesInc.Member
1985	CAE Singapore (S.E.A.) Pte Ltd.	Member			cae:CAESingaporeS.E.A.PteLtd.Member
1986	CAE South America Flight Training do Brasil Ltda.	Member			cae:CAESouthAmericaFlightTrainingdoBrasilLtda.Member
1987	CAE STS Limited	Member			cae:CAESTSLimitedMember
1988	CAE Training & Services Brussels NV	Member			cae:CAETrainingServicesBrusselsNVMember
1989	CAE Training & Services UK Ltd.	Member			cae:CAETrainingServicesUKLtd.Member
1990	CAE Training Norway AS	Member			cae:CAETrainingNorwayASMember
1991	CAE USA Inc.	Member			cae:CAEUSAInc.Member
1992	CAE Verwaltungsgesellschaft mbH	Member			cae:CAEVerwaltungsgesellschaftmbHMember
1993	Flight Simulator-Capital L.P.	Member			cae:FlightSimulatorCapitalL.P.Member
1994	Oxford Aviation Academy (Oxford) Limited	Member			cae:OxfordAviationAcademyOxfordLimitedMember
1995	Parc Aviation Limited	Member			cae:ParcAviationLimitedMember
1996	Parc Interim Limited	Member			cae:ParcInterimLimitedMember
1997	Presagis Canada Inc.	Member			cae:PresagisCanadaInc.Member
1998	Presagis Europe (S.A.)	Member			cae:PresagisEuropeS.A.Member
1999	Presagis USA Inc.	Member			cae:PresagisUSAInc.Member
2000	Servicios de Instrucci�n de Vuelo, S.L.	Member			cae:ServiciosdeInstruccindeVueloS.L.Member
2001	SIM-Industries Brasil Administracao de Centros de Treinamento Ltda.	Member			cae:SIMIndustriesBrasilAdministracaodeCentrosdeTreinamentoLtda.Member
2002	SIV Ops Training, S.L.	Member			cae:SIVOpsTrainingS.L.Member
2003	Aviation Training Northeast Asia B.V.	Member			cae:AviationTrainingNortheastAsiaB.V.Member
2004	CAE Flight and Simulator Services Korea, Ltd.	Member			cae:CAEFlightandSimulatorServicesKoreaLtd.Member
2005	CAE Flight Training (India) Private Limited	Member			cae:CAEFlightTrainingIndiaPrivateLimitedMember
2006	CAE-LIDER Training do Brasil Ltda.	Member			cae:CAELIDERTrainingdoBrasilLtda.Member
2007	CAE Melbourne Flight Training Pty Ltd.	Member			cae:CAEMelbourneFlightTrainingPtyLtd.Member
2008	China Southern West Australia Flying College Pty Ltd.	Member			cae:ChinaSouthernWestAustraliaFlyingCollegePtyLtd.Member
2009	Embraer CAE Training Services, LLC	Member			cae:EmbraerCAETrainingServicesLLCMember
2010	Emirates-CAE Flight Training LLC	Member			cae:EmiratesCAEFlightTrainingLLCMember
2011	Flight Training Alliance GmbH (JV)	Member			cae:FlightTrainingAllianceGmbHJVMember
2012	HATSOFF Helicopter Training Private Limited	Member			cae:HATSOFFHelicopterTrainingPrivateLimitedMember
2013	HFTS Helicopter Flight Training Services GmbH	Member			cae:HFTSHelicopterFlightTrainingServicesGmbHMember
2014	JAL CAE Flight Training Co. Ltd.	Member			cae:JALCAEFlightTrainingCo.Ltd.Member
2015	National Flying Training Institute Private Limited	Member			cae:NationalFlyingTrainingInstitutePrivateLimitedMember
2016	Pegasus Ucus Egitim Merkezi A.S.	Member			cae:PegasusUcusEgitimMerkeziA.S.Member
2017	Pelesys Learning Systems Inc.	Member			cae:PelesysLearningSystemsInc.Member
2018	Philippine Academy for Aviation Training Inc	Member			cae:PhilippineAcademyofAviationTrainingMember
2019	Rotorsim s.r.l.	Member			cae:Rotorsims.r.l.Member
2020	Rotorsim USA LLC	Member			cae:RotorsimUSALLCMember
2021	Zhuhai Free Trade Zone Xiang Yi Aviation Technology Company Limited	Member			cae:ZhuhaiFreeTradeZoneXiangYiAviationTechnologyCompanyLimitedMember
2022	Zhuhai Xiang Yi Aviation Technology Company Limited	Member			cae:ZhuhaiXiangYiAviationTechnologyCompanyLimitedMember
2023	Disclosure of transactions between related parties [line items]	LineItems			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2024	Proportion of ownership interest in subsidiary	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInSubsidiary
2025	Proportion of ownership interest in joint venture	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInJointVenture
2026	Percentage of voting equity interests acquired	Concept (Percent)	As Of		ifrs-full:PercentageOfVotingEquityInterestsAcquired
2027	Cash transferred	Concept (Monetary)	For Period	Credit	ifrs-full:OtherCashPaymentsToAcquireInterestsInJointVenturesClassifiedAsInvestingActivities
2028	Percent of joint venture held by co-venturer	Concept (Percent)	As Of		cae:ProportionOfOwnershipInterestInJointVentureHeldByCoVenturer
2029	Unrecognized share of losses of joint ventures	Concept (Monetary)	For Period	Debit	ifrs-full:UnrecognisedShareOfLossesOfJointVentures
2030	Cumulative unrecognised share of losses of joint ventures	Concept (Monetary)	As Of	Credit	ifrs-full:CumulativeUnrecognisedShareOfLossesOfJointVentures
2031	Cumulative unrecognised share of comprehensive losses of joint ventures	Concept (Monetary)	As Of	Credit	cae:CumulativeUnrecognisedShareOfComprehensiveLossesofJointVentures
2032	2494402 - Disclosure - RELATED PARTY TRANSACTIONS (Details)	Network	*	*	http://www.cae.com/role/RelatedPartyTransactionsDetails
2033	Disclosure of transactions between related parties [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2034	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
2035	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
2036	Joint ventures	Member			ifrs-full:JointVenturesMember
2037	Other related parties	Member			ifrs-full:OtherRelatedPartiesMember
2038	Types of interest rates [axis]	Axis			ifrs-full:TypesOfInterestRatesAxis
2039	Interest rate types [member]	Member			ifrs-full:InterestRateTypesMember
2040	Fixed interest rate	Member			ifrs-full:FixedInterestRateMember
2041	Disclosure of transactions between related parties [line items]	LineItems			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2042	Finance lease receivables	Concept (Monetary)	As Of	Debit	ifrs-full:FinanceLeaseReceivables
2043	Finance lease receivable, interest rate	Concept (Percent)	As Of		cae:Financeleasereceivableinterestrate
2044	Loans and receivables	Concept (Monetary)	As Of	Debit	ifrs-full:LoansAndReceivables
2045	Loans and receivables, interest rate	Concept (Percent)	As Of		cae:Loansandreceivablesinterestrate
2046	Non-current receivables	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentLoansAndReceivables
2047	Services received, related party transactions	Concept (Monetary)	For Period	Debit	ifrs-full:ServicesReceivedRelatedPartyTransactions
2048	2494403 - Disclosure - RELATED PARTY TRANSACTIONS - Outstanding Balances (Details)	Network	*	*	http://www.cae.com/role/RelatedPartyTransactionsOutstandingBalancesDetails
2049	Disclosure of transactions between related parties [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2050	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
2051	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
2052	Joint ventures	Member			ifrs-full:JointVenturesMember
2053	Disclosure of transactions between related parties [line items]	LineItems			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2054	Accounts receivable (Note 4)	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivablesDueFromRelatedParties
2055	Contracts in progress: assets	Concept (Monetary)	As Of	Debit	cae:Contractsinprogressassetsrelatedpartytransactions
2056	Other assets	Concept (Monetary)	As Of	Debit	cae:Otherassetsrelatedpartytransactions
2057	Accounts payable and accrued liabilities (Note 9)	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
2058	Contracts in progress: liabilities	Concept (Monetary)	As Of	Credit	cae:Contractsinprogressliabilitiesrelatedpartytransactions
2059	2494404 - Disclosure - RELATED PARTY TRANSACTIONS - Transactions (Details)	Network	*	*	http://www.cae.com/role/RelatedPartyTransactionsTransactionsDetails
2060	Disclosure of transactions between related parties [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2061	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
2062	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
2063	Joint ventures	Member			ifrs-full:JointVenturesMember
2064	Disclosure of transactions between related parties [line items]	LineItems			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2065	Revenue	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromSaleOfGoodsRelatedPartyTransactions
2066	Purchases	Concept (Monetary)	For Period	Debit	ifrs-full:PurchasesOfGoodsRelatedPartyTransactions
2067	Other income	Concept (Monetary)	For Period	Credit	cae:Otherincomerelatedpartytransactions
2068	2494405 - Disclosure - RELATED PARTY TRANSACTIONS - Compensation Of Key Management Personnel (Details)	Network	*	*	http://www.cae.com/role/RelatedPartyTransactionsCompensationOfKeyManagementPersonnelDetails
2069	Implied Table	Table	*	*	implied:Table
2070	Disclosure of related party transactions [Abstract]	Abstract			cae:DisclosureofrelatedpartytransactionsAbstract
2071	Salaries and other short-term employee benefits	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
2072	Post-employment benefits � defined benefit plans	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
2073	Share-based payments	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
2074	Key management personnel compensation	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensation