v3.10.0.1
Net Income (loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Numerator:        
Income from continuing operations $ 720 $ 520 $ 1,765 $ 1,584
Income from discontinued operations, net of income taxes 1 $ 0 5 $ 0
Net income $ 721   $ 1,770  
Denominator:        
Weighted average shares of common stock - basic 974 1,062 992 1,074
Dilutive effect of equity incentive awards (in shares) 9 16 13 17
Weighted average shares of common stock - diluted 983 1,078 1,005 1,091
Income per share - basic:        
Continuing operations (in usd per share) $ 0.74 $ 0.49 $ 1.78 $ 1.48
Discontinued operations (in usd per share) 0 0 0 0
Net income per share - basic (in usd per share) 0.74 0.49 1.78 1.48
Income per share - diluted:        
Continuing operations (in usd per share) 0.73 0.48 1.76 1.45
Discontinued operations (in usd per share) 0 0 0 0
Net income per share - diluted (in usd per share) $ 0.73 $ 0.48 $ 1.76 $ 1.45
Common stock equivalents excluded from income per diluted share because their effect would have been anti-dilutive (in shares) 15 1 12 2