XML 78 R106.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Share-Based Incentive Compenstaion (Details) - Cost Recognition - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based compensation      
Total compensation cost recognized in earnings for all share-based incentive compensation awards $ 142 $ 140 $ 136
Tax benefit recognized in earnings related to compensation costs 26 26 45
Total unrecognized compensation cost related to all nonvested share-based incentive compensation awards $ 136    
Weighted-average period of recognition for unrecognized compensation cost (in years) 1 year 8 months 12 days    
Cash received from the exercise of employee stock options under share-based compensation plans $ 213 132 173
Tax benefit for tax deductions from employee stock options exercised $ 18 14 31
Minimum [Member]      
Share-based compensation      
Estimated annual forfeiture rate reflected in share-based compensation cost (percent) 3.50%    
Maximum [Member]      
Share-based compensation      
Estimated annual forfeiture rate reflected in share-based compensation cost (percent) 4.50%    
Performance shares [Member]      
Share-based compensation      
Estimated attainment of performance shares at grant date (percent) 100.00%    
Compensation cost adjustments for the updated estimate of performance shares due to attaining certain performance levels $ 2 $ 3 $ 3