Accumulated Other Comprehensive Income (Loss) - Schedule of Amounts Reclassed from AOCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income (loss)	$ 3	$ (9)	$ (2)	$ (34)
Unrealized Net Gains (Losses) on Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income (loss)	3	(9)	(2)	(34)
Unrealized Net Gains (Losses) on Derivative Instruments | Net revenue
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income (loss)	2	(11)	(5)	(41)
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	$ 7