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Fair Value Measurements - Non-Recurring Fair Value Measurements (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 31, 2024
Aug. 31, 2023
Aug. 31, 2024
Aug. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impairment of long-lived assets (note 2) $ 0 $ 1 $ 3 $ 1
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount $ 0   $ 1