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Leases (Assets and Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Lease Assets    
Operating ROU assets $ 163.9 $ 154.1
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Finance lease assets $ 6.7 $ 10.6
Total lease assets $ 170.6 $ 164.7
Current:    
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Accrued Liabilities, Current Accrued Liabilities, Current
Operating $ 42.2 $ 42.3
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Other current liabilities Other current liabilities
Finance $ 0.7 $ 3.8
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other noncurrent liabilities Other noncurrent liabilities
Noncurrent:    
Operating $ 125.4 $ 115.5
Finance 5.4 6.0
Total lease liabilities 173.7 167.6
Finance lease asset, accumulated depreciation $ 5.1 $ 7.8