v3.26.1
Comprehensive Income - Schedule of Changes in Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Accumulated Other Comprehensive Income Loss [Line Items]    
Balance $ 379.2 $ 436.1
Balance 376.7 419.9
Pension and Other Postretirement Benefits Plans    
Accumulated Other Comprehensive Income Loss [Line Items]    
Balance (5.3) (66.4)
Other comprehensive income (loss) before reclassifications 0.0 0.0
Amortization of net actuarial loss [1] 0.1 0.4
Less: Income tax   0.1
Reclassifications, net of tax 0.1 0.3
Net change in accumulated other comprehensive loss 0.1 0.3
Balance (5.2) (66.1)
Translation Adjustments    
Accumulated Other Comprehensive Income Loss [Line Items]    
Balance (14.3) (15.5)
Other comprehensive income (loss) before reclassifications (0.5) 0.3
Amortization of net actuarial loss [1] 0.0 0.0
Less: Income tax   0.0
Reclassifications, net of tax 0.0 0.0
Net change in accumulated other comprehensive loss (0.5) 0.3
Balance (14.8) (15.2)
Accumulated Other Comprehensive Loss    
Accumulated Other Comprehensive Income Loss [Line Items]    
Balance (19.6) (81.9)
Other comprehensive income (loss) before reclassifications (0.5) 0.3
Amortization of net actuarial loss [1] 0.1 0.4
Less: Income tax   0.1
Reclassifications, net of tax 0.1 0.3
Net change in accumulated other comprehensive loss (0.4) 0.6
Balance $ (20.0) $ (81.3)
[1] These accumulated other comprehensive loss components are included in the calculation of net periodic pension and other postretirement benefits plans expense recognized in investment and other loss, net on the Unaudited Condensed Consolidated Statements of Operations (see Note 6, Retirement Plans).