Cash Flow and Additional Information - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019
Supplemental Cash Flow Information [Abstract]
Advertising expense	$ 24	$ 39	$ 22
Foreign exchange gains (losses)	$ 1	$ 0	$ 2
Percentage of cash and cash equivalents denominated in foreign currencies	20.00%	12.00%
Percentage of accounts receivable denominated in foreign currencies	25.00%	17.00%
Percentage of accounts payable denominated in foreign currencies	34.00%	17.00%
Percentage of cash, cash equivalents and investments threshold used to determine major issuer	13.00%	8.00%
Derivative asset, fair value of collateral	$ 0	$ 1
Cash, Cash Equivalents And Investments	804	$ 990
Government subsidies	$ 53
CEWS subsidy - % of eligible employee's employee insurable remuneration	75.00%
CEWS subsidy - % of eligible employee's employee insurable remuneration after extension (Dec 2020 to June 2021)	65.00%
CEWS first extension date of program	Dec. 19, 2020
CEWS second extension date of program	Jun. 01, 2021