Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)

v3.20.4
Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Valuation Allowance [Line Items]      
Continuing operations tax at statutory rate $ (13.5) $ (14.1) $ (5.3)
Permanent book/tax differences 0.6 1.1 1.7
Tax on foreign and foreign-source income 0.5 1.2 1.1
State income tax expense (benefit), net of federal benefit (2.7) (1.8) (0.6)
Other 0.0 (1.3) (0.5)
Total income tax expense (benefit) (0.8) 1.6 (6.0)
State      
Valuation Allowance [Line Items]      
(Decrease)/increase in valuation allowances on deferred foreign income tax assets 2.6 2.1 0.7
Federal      
Valuation Allowance [Line Items]      
(Decrease)/increase in valuation allowances on deferred foreign income tax assets 10.4 14.3 0.2
Law changes 0.0 0.0 0.1
Foreign      
Valuation Allowance [Line Items]      
(Decrease)/increase in valuation allowances on deferred foreign income tax assets $ 1.3 $ 0.1 $ (3.4)