Income Taxes - Components Of Provision For Income Taxes Related To Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Current
Federal	$ 170	$ (20)	$ 577
State	48	35	33
Foreign	142	152	205
Total current	360	167	815
Deferred
Federal	(204)	223	(767)
State	(105)	44	17
Foreign	(33)	(78)	(118)
Total deferred	(342)	189	(868)
Income tax expense (benefit)	$ 18	$ 356	$ (53)

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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