Quarterly report pursuant to Section 13 or 15(d)

Computation of Basic and Diluted Earnings Per Share (Detail)

v3.8.0.1
Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Numerator:    
Net income attributable to common shareowners $ 1,345 $ 1,166
Denominator:    
Weighted average shares 861 869
Deferred compensation obligations 1 1
Vested portion of restricted shares 4 4
Denominator for basic earnings per share 866 874
Effect of dilutive securities:    
Denominator for diluted earnings per share 870 879
Basic earnings per share (usd per share) $ 1.55 $ 1.33
Diluted earnings per share (usd per share) $ 1.55 $ 1.33
Restricted performance units    
Effect of dilutive securities:    
Incremental common shares attributable to share-based payment arrangements 4 4
Stock option plans    
Effect of dilutive securities:    
Incremental common shares attributable to share-based payment arrangements 0 1