CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Revenues	$ 231,051	$ 214,319	$ 208,357
Cost of Sales	(219,028)	(202,565)	(197,173)
Gross Profit	12,023	11,754	11,184
Operating Expenses
Selling, distribution and administrative expenses	(9,168)	(8,403)	(8,138)
Research and development	(96)	(71)	(125)
Goodwill impairment charges	(2)	(1,797)	(1,738)
Restructuring, impairment and related charges	(268)	(597)	(567)
Gains from sales of business and on healthcare technology net asset exchange, net	0	0	37
Total Operating Expenses	(9,534)	(10,868)	(10,422)
Operating Income	2,489	886	762
Other Income, Net	12	182	130
Equity Earnings and Charges from Investment in Change Healthcare Joint Venture	(1,108)	(194)	(248)
Loss on Debt Extinguishment	0	0	(122)
Interest Expense	(249)	(264)	(283)
Income from Continuing Operations Before Income Taxes	1,144	610	239
Income Tax (Expense) Benefit	(18)	(356)	53
Income from Continuing Operations	1,126	254	292
Income (Loss) from Discontinued Operations, Net of Tax	(6)	1	5
Net Income	1,120	255	297
Net Income Attributable to Noncontrolling Interests	(220)	(221)	(230)
Net Income Attributable to McKesson Corporation	$ 900	$ 34	$ 67
Diluted
Continuing operations (in dollars per share)	$ 4.99	$ 0.17	$ 0.30
Discontinued operations (in dollars per share)	(0.04)	0	0.02
Total (in dollars per share)	4.95	0.17	0.32
Basic
Continuing operations (in dollars per share)	5.01	0.17	0.30
Discontinued operations (in dollars per share)	(0.03)	0	0.02
Total (in dollars per share)	$ 4.98	$ 0.17	$ 0.32
Weighted Average Common Shares
Diluted (in shares)	182	197	209
Basic (in shares)	181	196	208
Businesses
Operating Expenses
Gains from sales of business and on healthcare technology net asset exchange, net	$ 0	$ 0	$ 109
Healthcare Technology Net Asset Exchange
Operating Expenses
Gains from sales of business and on healthcare technology net asset exchange, net	$ 0	$ 0	$ 37