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Income Taxes - Reconciliation of Beginning and Ending Amount of Unrecognized Income Tax Benefits (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 28, 2021
Feb. 29, 2020
Feb. 28, 2019
Income Tax Disclosure [Abstract]      
Unrecognized income tax benefits, Beginning balance $ 72 $ 84 $ 73
Increase for income tax positions of prior years 0 2 10
Increase for income tax positions of current year 2 1 5
Settlement of tax positions (50) (15) (4)
Unrecognized income tax benefits, Ending balance $ 24 $ 72 $ 84