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BUSINESS COMBINATIONS - Narrative (Details) $ in Millions, $ in Millions |  | 7 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Nov. 05, 2024 CAD ($) training_centre | Nov. 04, 2024 | Mar. 31, 2025 CAD ($) | Mar. 31, 2024 CAD ($) | Nov. 05, 2024 USD ($) training_centre
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Gain (loss) recognised as result of remeasuring to fair value equity interest in acquiree held by acquirer before business combination |  |  | $ 72.6 | $ 0.0 |
SIMCOM |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Equity interest in joint venture (in percent) |  | 50.00% |  |  |
Flexjet LLC |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Aviation training services agreement, extension period | 5 years |  |  |  |
Aviation training services agreement, total exclusivity period | 15 years |  |  |  |
SIMCOM |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |
Total cash consideration paid on acquisition date | $ 322.8 |  |  |  | $ 232.3
Number of training centres | training_centre | 4 |  |  |  | 4
Acquisition-date fair value of equity interest in acquiree held by acquirer immediately before acquisition date | $ 230.6 |  |  |  |
Gain (loss) recognised as result of remeasuring to fair value equity interest in acquiree held by acquirer before business combination | 72.6 |  |  |  |
Intangible assets | 504.8 |  |  |  |
Goodwill recognised as of acquisition date | 379.6 |  |  |  |
Customer-related intangible assets recognised as of acquisition date | 124.5 |  |  |  |
Other intangible assets recognised as of acquisition date | $ 0.7 |  |  |  |

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