Condensed Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 121	$ 12	$ 434	$ 501
Other comprehensive income (loss):
Currency translation adjustment	140	215	61	(146)
Net change in fair value of effective portion of cash flow hedges	10	(158)	(74)	645
Net change in pension and other benefits	(3)	(6)	(10)	9
Other comprehensive income (loss) before income tax effect	147	51	(23)	508
Income tax provision (benefit) related to items of other comprehensive income (loss)	5	(38)	(21)	167
Other comprehensive income (loss), net of tax	142	89	(2)	341
Comprehensive income	263	101	432	842
Comprehensive loss attributable to noncontrolling interests, net of tax	(1)	0	(1)	(1)
Comprehensive income attributable to our common shareholder	$ 264	$ 101	$ 433	$ 843