Goodwill and Intangible Assets, Net - Schedule of Information Regarding Intangible Assets (Details) - USD ($) $ in Millions	Jun. 30, 2024	Mar. 31, 2024
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 4,025	$ 4,033
Accumulated Amortization	(1,980)	(1,923)
Net Carrying Amount	$ 2,045	2,110
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Amortization Period (Years)	11 years
Gross Carrying Amount	$ 1,825	1,830
Accumulated Amortization	(730)	(701)
Net Carrying Amount	$ 1,095	1,129
Service agreements
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Amortization Period (Years)	10 years
Gross Carrying Amount	$ 1,129	1,126
Accumulated Amortization	(690)	(676)
Net Carrying Amount	$ 439	450
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Amortization Period (Years)	12 years
Gross Carrying Amount	$ 755	759
Accumulated Amortization	(405)	(395)
Net Carrying Amount	$ 350	364
Technology
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Amortization Period (Years)	10 years
Gross Carrying Amount	$ 284	284
Accumulated Amortization	(129)	(125)
Net Carrying Amount	$ 155	159
Other
Finite-Lived Intangible Assets [Line Items]
Weighted- Average Remaining Amortization Period (Years)	7 years
Gross Carrying Amount	$ 32	34
Accumulated Amortization	(26)	(26)
Net Carrying Amount	$ 6	$ 8