Income Taxes - Schedule of Components of Income Tax Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (18)	$ 329	$ 289	$ 799
Reported income tax expense (benefit) rates (percent)	(2.90%)	22.70%	11.00%	21.60%