XML 88 R76.htm IDEA: XBRL DOCUMENT v3.20.2
Share-based Compensation (Narrative) (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Apr. 30, 2020
Sep. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period             10 years
Incremental share based compensation expense   $ 104.4   $ 74.0 $ 243.4 $ 228.3  
Percent of annual incentive compensation receivable in shares   100.00%     100.00%    
SARs              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Expiration period 10 years   7 years        
Incremental share based compensation expense         $ 18.9