CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
OPERATING ACTIVITIES
Net income	$ 1,776	$ 843
Adjustments to reconcile to net cash provided by operating activities:
Depreciation	124	148
Amortization	175	265
Long-lived asset impairment charges	11	127
Deferred taxes	170	(18)
Credits associated with last-in, first-out inventory method	(36)	(46)
Non-cash operating lease expense	126	152
Gain from sales of businesses and investments	(148)	(101)
European businesses held for sale	(35)	470
Other non-cash items	157	381
Changes in assets and liabilities, net of acquisitions:
Receivables	(1,883)	(2,311)
Inventories	(1,453)	(1,164)
Drafts and accounts payable	2,292	1,431
Operating lease liabilities	(174)	(186)
Taxes	82	40
Litigation liabilities	(915)	151
Other	(103)	(12)
Net cash provided by operating activities	166	170
INVESTING ACTIVITIES
Payments for property, plant, and equipment	(157)	(186)
Capitalized software expenditures	(65)	(93)
Acquisitions, net of cash, cash equivalents, and restricted cash acquired	(23)	(4)
Proceeds from sales of businesses and investments, net	496	179
Other	(135)	(53)
Net cash provided by (used in) investing activities	116	(157)
FINANCING ACTIVITIES
Proceeds from short-term borrowings	100	3,020
Repayments of short-term borrowings	(100)	(3,020)
Proceeds from issuances of long-term debt	0	498
Repayments of long-term debt	(4)	(1,636)
Payments for debt extinguishments	0	(184)
Common stock transactions:
Issuances	127	111
Share repurchases	(1,484)	(1,272)
Dividends paid	(139)	(134)
Exercise of put right by noncontrolling shareholders of McKesson Europe AG	0	(1,031)
Other	(253)	(246)
Net cash used in financing activities	(1,753)	(3,894)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	24	18
Change in cash, cash equivalents, and restricted cash classified within Assets held for sale	470	0
Net decrease in cash, cash equivalents, and restricted cash	(977)	(3,863)
Cash, cash equivalents, and restricted cash at beginning of period	3,935	6,396
Cash, cash equivalents, and restricted cash at end of period	2,958	2,533
Less: Restricted cash at end of period included in Prepaid expenses and other	(42)	(382)
Cash and cash equivalents at end of period	$ 2,916	$ 2,151