XML 112 R88.htm IDEA: XBRL DOCUMENT v3.10.0.1
Share-Based Compensation Plans - Summary of Information Relative to Stock Option Plan Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Number of Options, Outstanding, January 1 (in shares) 36,274    
Number of Options, Granted (in shares) 3,520    
Number of Options, Exercised (in shares) (14,598)    
Number of Options, Forfeited (in shares) (1,389)    
Number of Options, Outstanding, December 31 (in shares) 23,807 36,274  
Number of Options, Exercisable (in shares) 16,184    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]      
Weighted Average Exercise Price, Options Outstanding, January 1 (in dollars per share) $ 46.77    
Weighted Average Exercise Price, Granted (in dollars per share) 58.15 $ 63.88 $ 54.63
Weighted Average Exercise Price, Exercised (in dollars per share) 40.51    
Weighted Average Exercise Price, Forfeited (in dollars per share) 53.80    
Weighted Average Exercise Price, Options Outstanding, December 31 (in dollars per share) 51.89 $ 46.77  
Weighted Average Exercise Price, Exercisable (in dollars per share) $ 48.85    
Weighted Average Remaining Contractual Term, Outstanding 5 years 11 months 12 days    
Weighted Average Remaining Contractual Term, Exercisable 4 years 9 months 25 days    
Aggregate Intrinsic Value, Outstanding $ 584    
Aggregate Intrinsic Value, Exercisable $ 446