Income Taxes - Schedule of Income from Continuing Operations Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Income (loss) from continuing operations before income taxes
U.S.	$ (6,019)	$ 216	$ 1,512
Foreign	985	928	(902)
Income (loss) from continuing operations before income taxes	$ (5,034)	$ 1,144	$ 610

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details