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Fair Value Measurements - Non-Recurring Fair Value Measurements (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Nov. 30, 2025 | Nov. 30, 2024 | Nov. 30, 2025 | Nov. 30, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Impairment of long-lived assets (note 3) | $ 0.6 | $ 0.6 | $ 1.2 | $ 4.7

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