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SHARE-BASED PAYMENTS - TSR Relative Performance Index (Details) | 12 Months Ended
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Mar. 31, 2018
First Quartile |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Factor percentage | 0.00%
First Quartile | Bottom of range |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Percentile percentage | 0.00%
First Quartile | Top of range |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Percentile percentage | 25.00%
Two Quartile | Bottom of range |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Percentile percentage | 26.00%
Factor percentage | 50.00%
Two Quartile | Top of range |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Percentile percentage | 50.00%
Factor percentage | 98.00%
Three Quartile | Bottom of range |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Percentile percentage | 51.00%
Factor percentage | 100.00%
Three Quartile | Top of range |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Percentile percentage | 75.00%
Factor percentage | 148.00%
Fourth Quartile |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Factor percentage | 150.00%
Fourth Quartile | Bottom of range |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Percentile percentage | 76.00%
Fourth Quartile | Top of range |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Percentile percentage | 100.00%

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- Definition TSR Factor + References No definition available. + Details
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Namespace Prefix: | cae_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition TSR Percentile Percentage + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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- Details
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- Details
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Period Type: |

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- Details
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Namespace Prefix: |
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Period Type: |

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- Details
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Period Type: |

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- Details
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Period Type: |