XML 109 R83.htm IDEA: XBRL DOCUMENT v3.10.0.1
Employee Benefit Plans (Schedule of Stock Option Activity) (Details) - Stock Options - $ / shares
shares 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]      
Beginning Balance (in shares) 15 17 16
Granted (in shares) 1 4 5
Exercised (in shares) (5) (5) (3)
Cancelled (in shares) (1) (1) (1)
Ending Balance (in shares) 10 15 17
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]      
Beginning Balance (in dollars per share) $ 61.97 $ 53.21 $ 47.19
Granted (in dollars per share) 96.49 80.05 63.58
Exercised (in dollars per share) 54.19 44.75 36.15
Cancelled (in dollars per share) 74.76 70.50 62.25
Ending Balance (in dollars per share) $ 70.03 $ 61.97 $ 53.21