CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Millions	9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income (loss)	$ 658	$ (1,857)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	1,506	1,429
Goodwill impairment losses	0	2,940
Operating right-of-use expense	463	506
Pension and other post-employment benefits, actuarial and settlement losses	2	0
Share-based compensation	42	57
Deferred taxes	(319)	(28)
(Gain) loss on dispositions	(2,023)	6
Provision for losses on accounts receivable	52	0
Unrealized foreign currency exchange (gain) loss	(60)	14
Impairment losses and contract write-offs	68	20
Other non-cash charges, net	(2)	(13)
Changes in assets and liabilities, net of effects of acquisitions and dispositions:
Decrease in assets	88	141
Decrease in operating lease liability	(463)	(506)
Increase (decrease) in other liabilities	392	(647)
Net cash provided by operating activities	404	2,062
Cash flows from investing activities:
Purchases of property and equipment	(215)	(240)
Payments for transition and transformation contract costs	(189)	(220)
Software purchased and developed	(209)	(178)
Payments for acquisitions, net of cash acquired	(10)	(1,997)
Business dispositions	4,942	0
Cash collections related to deferred purchase price receivable	159	513
Proceeds from sale of assets	27	55
Short-term investing	0	(75)
Other investing activities, net	(5)	20
Net cash provided by (used in) investing activities	4,500	(2,122)
Cash flows from financing activities:
Borrowings of commercial paper	854	4,010
Repayments of commercial paper	(1,327)	(3,893)
Borrowings under lines of credit	2,500	0
Repayment of borrowings under lines of credit	(4,000)	0
Borrowings on long-term debt, net of discount	993	2,198
Principal payments on long-term debt	(2,926)	(1,029)
Payments on finance leases and borrowings for asset financing	(694)	(646)
Proceeds from stock options and other common stock transactions	1	11
Taxes paid related to net share settlements of share-based compensation awards	(5)	(15)
Repurchase of common stock and advance payment for accelerated share repurchase	0	(736)
Dividend payments	(53)	(161)
Other financing activities, net	(14)	(44)
Net cash used in financing activities	(4,671)	(305)
Effect of exchange rate changes on cash and cash equivalents	20	26
Net increase (decrease) in cash and cash equivalents including cash classified within current assets held for sale	253	(339)
Less: cash classified within current assets held for sale	(13)	0
Net increase (decrease) in cash and cash equivalents	240	(339)
Cash and cash equivalents at beginning of year	3,679	2,899
Cash and cash equivalents at end of period	$ 3,919	$ 2,560