Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Income Tax Disclosure [Abstract]
Tax benefit, share-based compensation	$ (23)	$ (37)
Effective income tax rate reconciliation, net discrete tax benefit		(125)
Effective income tax rate reconciliation, foreign income tax rate differential, tax benefit		(58)
Unrecognized tax benefits, increase (decrease)		$ (36)
Unrecognized tax benefits	1,500
Unrecognized tax benefits that would impact effective tax rate	$ 1,400