Cash Flows (Details) - USD ($) $ in Millions	9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash paid for:
Interest	$ 177	$ 262
Taxes on income, net of refunds	326	159
Operating:
ROU assets obtained in exchange for lease, net	130	449
Prepaid assets acquired under long-term financing	111	46
Investing:
Capital expenditures in accounts payable and accrued expenses	60	16
Capital expenditures through finance lease obligations	180	277
Assets acquired under long-term financing	44	26
Decrease in deferred purchase price receivable	0	(52)
Contingent consideration	0	2
Financing:
Shares repurchased but not settled in cash	11	0
Income tax refunds	46	31
Change in lease classification from operating to finance lease	$ 792	$ 529