XML 119 R72.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Fair Value Measurements (Changes in Level 3 Fair Value Measurements) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Level 3 Fair Value Measurements [Roll Forward]    
Balance, beginning $ 1.7 $ 4.9
Increase (reduction) in fair value recorded in earnings 2.1 (2.6)
Payments (0.5) (0.6)
Balance, ending $ 3.3 $ 1.7