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Hedging Activities - Summary of Foreign Currency Gains and (Losses) from Non-Derivative Instruments (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Derivatives designated for hedge accounting | Net Investment Hedges | Euro Denominated Notes        
Derivatives, Fair Value [Line Items]        
Derivatives designated as net investment hedges: $ 75 $ 33 $ 139 $ 11