CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Statement of Comprehensive Income [Abstract]        
Unrealized gain from change in pension obligations, tax $ (0.1) $ 0.0 $ (0.2) $ 0.0
Unrealized gain on cash flow hedges, tax $ (0.4) $ (0.3) $ (0.4) $ (0.3)