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Income Taxes - Tax Reconciliation (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Income Tax Disclosure [Abstract]        
Effective tax rate 21.30% 53.30% 21.60% 29.80%
Before tax        
Income (loss) before income taxes $ 95.8 $ (9.0) $ 249.9 $ 126.5
Restructuring and other (income) charges, net     0.0 0.1
Legislative tax rate changes 0.0 0.0 0.0 0.0
Litigation verdict charge 0.0 85.0 0.0 85.0
Total discrete items 0.0 85.0 0.0 85.1
Consolidated operations, before discrete items 95.8 76.0 249.9 211.6
Tax        
Provision (benefit) for income taxes 20.4 (4.8) 53.9 37.7
Restructuring and other (income) charges, net     0.0 0.0
Legislative tax rate changes 0.0 0.1 0.0 (14.6)
Litigation verdict charge 0.0 19.7 0.0 19.7
Other tax only discrete items (0.3) 0.5 (1.1) 0.7
Total discrete items (0.3) 20.3 (1.1) 5.8
Consolidated operations, before discrete items $ 20.1 $ 15.5 $ 52.8 $ 43.5
EAETR 21.00% 20.40% 21.10% 20.60%