XML 95 R76.htm IDEA: XBRL DOCUMENT v3.6.0.2
Stock Plans (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Restricted Stock And Restricted Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period, in years 3 years    
Pre-tax compensation expense $ 44 $ 51 $ 46
Deferred tax benefit 17 20 18
Unamortized compensation expense $ 64    
Weighted-average period of recognition, in years 2 years    
Weighted-average grant date fair value $ 56 $ 65 $ 53
Weighted-average grant date fair value, per share (in USD per share) $ 59.38 $ 54.54 $ 36.75
Total fair value vested $ 78 $ 85 $ 86
Common Stock [Member] | 2015 Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum number of shares issuable under the stock compensation plan (in shares) 40,000,000    
Shares available to be granted (in shares) 39,046,757    
Common Stock [Member] | 2015 Directors Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum number of shares issuable under the stock compensation plan (in shares) 1,000,000    
Shares available to be granted (in shares) 954,574