XML 57 R41.htm IDEA: XBRL DOCUMENT v3.20.4
Restructuring (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]      
Restructuring charges $ 6.4 $ 4.9 $ 1.5
Contract Termination      
Restructuring Cost and Reserve [Line Items]      
Accrued unpaid liabilities, contract termination $ 0.8 $ 1.1