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Leases (Lease Maturity) (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Lease Maturity [Line Items]    
Total Future Minimum Lease Payments Due, Next Twelve Months $ 45.1  
Total Future Minimum Lease Payments, Due in Two Years 38.5  
Total Future Minimum Lease Payments, Due in Three Years 30.2  
Total Future Minimum Lease Payments, Due in Four Years 23.2  
Total Future Minimum Lease Payments, Due in Five Years 19.6  
Total Future Minimum Lease Payments, Due Thereafter 129.1  
Total Future Minimum Lease Payments Due 285.7  
Undiscounted Excess Amount (65.5)  
Total Lease Liability 220.2 $ 235.2
Short-term Lease Liability 34.8  
Long-term Lease Liability 185.4  
Finance Leases, Future Minimum Payments Due, Next Twelve Months 37.2  
Finance Leases, Future Minimum Payments Due in Two Years 33.6  
Finance Leases, Future Minimum Payments Due in Three Years 25.6  
Finance Leases, Future Minimum Payments Due in Four Years 19.2  
Finance Leases, Future Minimum Payments Due in Five Years 15.8  
Finance Leases, Future Minimum Payments Due Thereafter 112.9  
Finance Lease, Liability, Payment, Due 244.3  
Finance Lease, Liability, Undiscounted Excess Amount (58.7)  
Finance Lease, Liability 185.6 195.0
Finance Lease, Liability, Current 28.1 23.3
Finance Lease, Liability, Noncurrent 157.5 171.7
Operating Leases, Future Minimum Payments Due, Next Twelve Months 7.9  
Operating Leases, Future Minimum Payments, Due in Two Years 4.9  
Operating Leases, Future Minimum Payments, Due in Three Years 4.6  
Operating Leases, Future Minimum Payments, Due in Four Years 4.0  
Operating Leases, Future Minimum Payments, Due in Five Years 3.8  
Operating Leases, Future Minimum Payments, Due Thereafter 16.2  
Lessee, Operating Lease, Liability, Payments, Due 41.4  
Lessee, Operating Lease, Liability, Undiscounted Excess Amount (6.8)  
Operating Lease, Liability 34.6  
Operating Lease, Liability, Current 6.7 10.3
Operating Lease, Liability, Noncurrent $ 27.9 $ 29.9