Share-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation by Award [Line Items]
Total compensation expense	$ 13	$ 9	$ 27	$ 13
Deferred Compensation Share-based Arrangements, Liability, Current and Noncurrent	35		$ 35
SARs
Share-based Compensation by Award [Line Items]
Number of SARs granted (in shares)			2,620,019
Unrecognized compensation expense	$ 10		$ 10
Unrecognized compensation expense, weighted average period of recognition (years)	1 year 3 months 18 days
RSUs
Share-based Compensation by Award [Line Items]
Number of RSUs granted (in shares)			1,969,209
Cash payments to settle liabilities			$ 13	15
Unrecognized compensation expense	$ 22		22
Unrecognized compensation expense, weighted average period of recognition (years)	1 year 4 months 24 days
Cash
Share-based Compensation by Award [Line Items]
Cash payments to settle liabilities			$ 5	$ 8