Earnings Per Common Share (Tables)

6 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Schedule of computations for basic and diluted earnings per common share

The computations for basic and diluted earnings per common share are as follows:

	Quarter Ended September 30,						Six Months Ended September 30,
(In millions, except per share amounts)	2018			2017			2018			2017
Income from continuing operations	$	552		$	56		$	471		$	419
Net income attributable to noncontrolling interests	(54		)	(55		)	(112		)	(111		)
Income from continuing operations attributable to McKesson	498			1			359			308
Income from discontinued operations, net of tax	1			—			2			2
Net income attributable to McKesson	$	499		$	1		$	361		$	310
Weighted average common shares outstanding:
Basic	198			209			200			210
Effect of dilutive securities:
Options to purchase common stock	—			—			—			—
Restricted stock units	1			1			1			1
Diluted	199			210			201			211
Earnings per common share attributable to McKesson: (1)
Diluted
Continuing operations	$	2.51		$	0.01		$	1.79		$	1.46
Discontinued operations	—			—			0.01			0.01
Total	$	2.51		$	0.01		$	1.80		$	1.47
Basic
Continuing operations	$	2.52		$	0.01		$	1.80		$	1.47
Discontinued operations	—			—			0.01			0.01
Total	$	2.52		$	0.01		$	1.81		$	1.48

(1) Certain computations may reflect rounding adjustments.