XML 60 R39.htm IDEA: XBRL DOCUMENT v3.20.2
Leases - Operating and Finance Leases by Income Statement Location (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Leases [Abstract]        
Amortization of lease assets $ 0.4 $ 0.3 $ 1.3 $ 0.9
Interest on lease liabilities 0.1 0.1 0.4 0.4
Operating lease cost 4.5 4.5 12.6 14.2
Variable lease cost 2.0 3.6 8.9 13.6
Net lease cost $ 7.0 $ 8.5 $ 23.2 $ 29.1