XML 28 R124.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Plan Information (Details) - USD ($)
shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Deferred Compensation Liability, Current and Noncurrent $ 197.5 $ 196.2
Incentive compensation plan initiation year 2019  
2019 PIP target performance cash award percentage range range from 0% to 300% of the target amount  
2019 PIP target award percentage range - Executives 0% to 200%  
Number of shares initially available for grant 27.0  
Maximum shares participants are eligible to receive 2.0  
Maximum cash award per employee $ 10.0  
Vesting period in which the fair value of shares on grant date is amortized over, years 3 years