Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2024
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 136	$ 174	$ 378	$ 369
Effective tax rate	24.00%	24.00%	24.00%	25.00%
Net deferred income tax liability	$ 3,300		$ 3,300		$ 3,300

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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+ Details