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Cash, Cash Equivalents and Investments - Contractual Maturities of Available-for-Sale Investments (Details) - USD ($) $ in Millions | Nov. 30, 2021 | Feb. 28, 2021
--- | --- | ---
Cost Basis |  |
Due in one year or less | $ 632 | $ 599
No fixed maturity | 10 | 10
Total | 642 | 609
Fair Value |  |
Due in one year or less | 632 | 599
No fixed maturity | 1 | 3
Total | $ 633 | $ 602

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