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Leases and Other Commitments (Narrative) (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Operating Lease, Cost $ 63.2 $ 66.1
Lessee, Operating Lease, Renewal Term 5  
Operating Lease, Remaining Lease Term 16  
Lessee, Operating Lease, Option to Terminate 12  
Lessee, Operating Lease, Term of Contract 12  
Lease Term Recognition-Balance Sheet 12  
Short-term Lease, Cost $ 0.7 0.7
Operating Lease, Expense 63.9 66.8
Finance Lease, Interest Expense 3.1 3.3
Finance Lease, Right-of-Use Asset, Amortization 8.7 8.7
Finance Lease, Expense 11.8 12.0
Sublease Income $ 10.4 $ 13.3