v3.25.1
Accumulated Other Comprehensive Income (Loss) - Schedule of Reclassifications out of AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Reclassifications out of AOCI [Line Items]    
Other income (expense) - net $ (1.3) $ (0.1)
Interest expense 52.9 85.3
Tax benefit (expense) 0.4 (44.2)
Net income (loss) 14.8 21.9
Amount reclassified from accumulated other comprehensive income (loss)    
Reclassifications out of AOCI [Line Items]    
Interest expense (2.7) (21.2)
Total before tax (3.1) (21.6)
Tax benefit (expense) 0.7 5.3
Net income (loss) (2.4) (16.3)
Amortization of prior service costs | Amount reclassified from accumulated other comprehensive income (loss)    
Reclassifications out of AOCI [Line Items]    
Other income (expense) - net (0.1) (0.1)
Amortization of actuarial gain/loss | Amount reclassified from accumulated other comprehensive income (loss)    
Reclassifications out of AOCI [Line Items]    
Other income (expense) - net $ (0.3) $ (0.3)