Accumulated Other Comprehensive Income (Loss) - Schedule of Amounts Reclassed from AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income (loss)	$ 14	$ 1	$ 19	$ (1)
Unrealized Net Gains (Losses) on Derivative Instruments | Net revenue
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income (loss)	15	(1)	22	(6)
Unrealized Net Gains (Losses) on Derivative Instruments | Research and development
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income (loss)	$ (1)	$ 2	$ (3)	$ 5