Fair Value Measurements - Schedule of Long-Term Debt is Recorded at Amortized Cost (Details) - USD ($) $ in Millions	Dec. 31, 2023	Mar. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 5,673	$ 5,594
Fair Value, Recurring | Fair value, inputs, level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	5,673	5,594
Fair Value	$ 5,581	$ 5,386