Cash, Cash Equivalents and Investments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020	Feb. 28, 2021
Cash, Cash Equivalents and Investments [Line Items]
Investments that are communicated to the third party for consideration of reasonableness, threshold limit for fair values			0.50%
Equity Securities without Readily Determinable Fair Value, Amount	$ 30		$ 30		$ 37
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount	5		5
Distribution from long-term investments	35		35	$ 0
Realized gains (losses) on non-marketable equity investments without readily determinable fair value sold during the period	22
Return of capital on Limited Partnership Investments	13		13
Debt Securities, Available-for-sale, Realized Gain (Loss)	0	$ 0	0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 0		$ 0		$ 0
Minimum
Cash, Cash Equivalents and Investments [Line Items]
Letters of credit terms			1 month
Maximum
Cash, Cash Equivalents and Investments [Line Items]
Letters of credit terms			4 years