Investment In and Advances to Non-Consolidated Affiliates and Related Party Transactions - Summary of Results of Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Income tax provision (benefit)	$ 54	$ (6)	$ 159	$ 146
Net income	121	12	434	501
Equity Method Investments
Schedule of Equity Method Investments [Line Items]
Net sales	345	388	1,135	1,344
Costs and expenses related to net sales	359	363	1,121	1,282
Income tax provision (benefit)	(6)	8	2	19
Net income	(8)	17	12	43
Purchases of tolling services from Alunorf	$ 65	$ 85	$ 223	$ 253