CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenues	$ 74,483	$ 67,154
Cost of sales	(71,461)	(64,131)
Gross profit	3,022	3,023
Selling, distribution, general, and administrative expenses	(1,870)	(1,959)
Claims and litigation charges, net	0	(5)
Restructuring, impairment, and related charges, net	(52)	(23)
Total operating expenses	(1,922)	(1,987)
Operating income	1,100	1,036
Other income, net	38	15
Interest expense	(47)	(45)
Income from continuing operations before income taxes	1,091	1,006
Income tax expense	(94)	(199)
Income from continuing operations	997	807
Income from discontinued operations, net of tax	0	2
Net income	997	809
Net income attributable to noncontrolling interests	(39)	(41)
Net income attributable to McKesson Corporation	$ 958	$ 768
Diluted
Continuing operations (in usd per share)	$ 7.02	$ 5.25
Discontinued operations (in usd per share)	0	0.01
Total (in dollars per share)	7.02	5.26
Basic
Continuing operations (in usd per share)	7.07	5.31
Discontinued operations (in usd per share)	0	0.01
Total (in dollars per share)	$ 7.07	$ 5.32
Weighted-average common shares outstanding
Diluted (in usd per share)	136.6	145.9
Basic (in shares)	135.5	144.2