Leases, Codification Topic 842 (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Lessee, Lease, Description [Line Items]
Operating Lease, Expense	$ 98	$ 87	$ 70
Variable Lease, Cost	21	21	37
Short-term Lease, Cost	2	2	14
Operating Lease, Cost	121	110	121
Operating Lease, Payments	97	85	69
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 150	$ 90	$ 52
Operating Lease, Weighted Average Remaining Lease Term	6 years 9 months 18 days	7 years 2 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	2.50%	2.70%
Operating Lease, Right-of-Use Asset	$ 314	$ 242
Operating Lease, Liability, Current	81	76
Operating Lease, Liability, Noncurrent	272	202
Operating Lease, Liability	353	$ 278
Operating Leases, Future Minimum Payments Due, Next Twelve Months	86
Lessee, Operating Lease, Liability, Payments, Due Year Two	73
Lessee, Operating Lease, Liability, Payments, Due Year Three	56
Lessee, Operating Lease, Liability, Payments, Due Year Four	46
Lessee, Operating Lease, Liability, Payments, Due Year Five	31
Lessee, Operating Lease, Liability, to be Paid, after Year Five	93
Lessee, Operating Lease, Liability, Payments, Due	385
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(32)
Unrecorded unconditional purchase obligation	$ 3,828
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	12 years
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	2 years
Operating Lease [Member]
Lessee, Lease, Description [Line Items]
Unrecorded unconditional purchase obligation	$ 138