XML 59 R46.htm IDEA: XBRL DOCUMENT v3.3.1.900
Share-Based Incentive Compensation (details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Share-Based Incentive Compensation disclosure      
Stock options vested at end of period, number (in shares) 8,773,891    
Stock options vested at end of period, weighted average exercise price (per share) $ 77.11    
Stock options vested at end of period, weighted average contractual life remaining 6 years 7 months 6 days    
Stock options vested at end of period, aggregate intrinsic value $ 347    
Stock options exercisable at end of period, number (in shares) 5,158,324    
Stock options exercisable at end of period, weighted average exercise price (per share) $ 61.95    
Stock options exercisable at end of period, weighted average contractual life remaining 4 years 10 months 24 days    
Stock options exercisable at end of period, aggregate intrinsic value $ 282    
Total compensation cost recognized in earnings for all share-based incentive compensation awards 50 $ 47  
Tax benefit recognized in earnings related to compensation costs 17 $ 16  
Total unrecognized compensation cost related to all nonvested share-based incentive compensation awards $ 215   $ 124
Weighted-average period of recognition for unrecognized compensation cost (in years) 2 years 2 months 12 days   1 year 8 months 12 days