XML 107 R94.htm IDEA: XBRL DOCUMENT v3.19.1
Share-Based Compensation Plans (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock unit awards granted (in shares) 798,669 793,995
Stock unit awards grant-date fair value $ 73.4 $ 82.6
Share-based compensation expense 55.3 56.5
Restricted Stock Unit Awards    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense 39.2 46.7
Retirement Eligible Employees | Restricted Stock Unit Awards    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense 21.2 26.9
Retirement Eligible Employees | Performance Shares    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense $ 9.2 $ 4.7
Performance stock units granted (in shares) 211,269 242,232
Performance stock awards grant-date fair value $ 19.6 $ 25.4
Retirement Eligible Employees | RSU's Vested And Expensed Upon Issuance    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense $ 3.3 $ 2.7