Income Taxes - Schedule of Income from Continuing Operations Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Income from continuing operations before income taxes
U.S.	$ 2,597	$ 3,308	$ 1,944
Foreign	1,192	1,322	(16)
Income from continuing operations before income taxes	$ 3,789	$ 4,630	$ 1,928