Condensed Consolidated Statement of Shareholder's Equity (unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	(Accumulated Deficit)/Retained Earnings	Accumulated Other Comprehensive Loss (AOCI)	Non- controlling Interests
Beginning balance, shares at Mar. 31, 2023		600,000,000
Beginning balance at Mar. 31, 2023	$ 3,454	$ 0	$ 1,208	$ 2,472	$ (238)	$ 12
Increase (Decrease) in Stockholders' Equity
Net income attributable to our common shareholder	156			156
Net loss attributable to noncontrolling interests	0
Currency translation adjustment included in other comprehensive (loss) income	(16)				(16)
Change in fair value of effective portion of cash flow hedges, net of tax provision (benefit) included in other comprehensive (loss) income	124				124
Change in pension and other benefits, net of tax provision included in other comprehensive income (loss)	(3)				(3)	0
Ending balance, shares at Jun. 30, 2023		600,000,000
Ending balance at Jun. 30, 2023	3,715	$ 0	1,208	2,628	(133)	12
Beginning balance, shares at Mar. 31, 2024		600,000,000
Beginning balance at Mar. 31, 2024	3,810	$ 0	1,108	3,072	(381)	11
Increase (Decrease) in Stockholders' Equity
Net income attributable to our common shareholder	151			151
Net loss attributable to noncontrolling interests	(1)					(1)
Currency translation adjustment included in other comprehensive (loss) income	(22)				(22)
Change in fair value of effective portion of cash flow hedges, net of tax provision (benefit) included in other comprehensive (loss) income	(23)				(23)
Change in pension and other benefits, net of tax provision included in other comprehensive income (loss)	(2)				(2)	0
Ending balance, shares at Jun. 30, 2024		600,000,000
Ending balance at Jun. 30, 2024	$ 3,913	$ 0	$ 1,108	$ 3,223	$ (428)	$ 10