Fair Value Measurements - Non-Recurring Fair Value Measurements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2023	Nov. 30, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of long-lived assets (note 3)	$ 11	$ 0	$ 11	$ 4
Impairment Of Right of Use Assets	3	4	3	4
Patent Abandonment, Cost	15		15
Patent Abandonment, Accumulated Amortization	$ 7		7
Patent Abandonment, Net Book Value		$ 0	$ 8	$ 0