XML 59 R46.htm IDEA: XBRL DOCUMENT v3.10.0.1
Earnings Per Common Share - Schedule of Computation for Basic and Diluted Earnings per Common Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Earnings Per Share [Abstract]    
Income (loss) from continuing operations $ (81) $ 363
Net income attributable to noncontrolling interests (58) (56)
Income (loss) from continuing operations attributable to McKesson (139) 307
Income from discontinued operations, net of tax 1 2
Net Income (Loss) Attributable to McKesson Corporation $ (138) $ 309
Weighted average common shares outstanding:    
Basic (in shares) 202 211
Effect of dilutive securities:    
Options to purchase common stock (in shares) 0 1
Restricted stock units (in shares) 0 1
Diluted (in shares) 202 213
Diluted    
Continuing operations (in dollars per share) $ (0.69) $ 1.44
Discontinued operations (in dollars per share) 0.01 0.01
Total (in dollars per share) (0.68) 1.45
Basic    
Continuing operations (in dollars per share) (0.69) 1.46
Discontinued operations (in dollars per share) 0.01 0.00
Total (in dollars per share) $ (0.68) $ 1.46