Additional Information - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	May 31, 2020	May 31, 2019	Feb. 29, 2020
Supplemental Cash Flow Information [Abstract]
Percentage of cash and cash equivalents denominated in foreign currencies	12.00%		12.00%
Percentage of accounts receivable denominated in foreign currencies	11.00%		17.00%
Percentage of accounts payable denominated in foreign currencies	32.00%		17.00%
Interest rate	3.75%		3.75%
Percentage of cash, cash equivalents and investments threshold used to determine major issuer	12.00%	8.00%
Derivative asset, fair value of collateral			$ 1
Derivative liability, fair value of collateral	$ 2
Cash, Cash Equivalents And Investments	955		$ 990
Government subsidies	$ 9