Hedging Activities - Summary of Derivative Instruments Gain (Loss) (Details) - Derivatives designated for hedge accounting - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Cross-currency swaps
Derivatives, Fair Value [Line Items]
Derivatives designated as net investment hedges:	$ 21	$ 10	$ 33	$ 5
Cross-currency swaps | Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Derivatives designated as cash flow hedges:	(3)	1	(5)	(1)
Fixed interest rate swaps | Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Derivatives designated as cash flow hedges:	$ 28	$ 10	$ 55	$ 12