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Leases - Components of Right-of-us Assets and Liabilities Related to Leases (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Leases [Abstract]    
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Property and equipment, net Property and equipment, net
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Other current liabilities Other current liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Current maturities of long-term debt Current maturities of long-term debt
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Long-term debt, less current maturities Long-term debt, less current maturities
Assets:    
Operating lease assets $ 324.1 $ 310.1
Finance lease assets 329.6 258.1
Total leased assets 653.7 568.2
Operating lease liabilities:    
Current 40.1 39.2
Long-term 315.6 300.9
Total operating lease liabilities 355.7 340.1
Finance lease liabilities:    
Current 19.0 18.9
Long-term 345.6 262.3
Total finance lease liabilities 364.6 281.2
Total lease liabilities $ 720.3 $ 621.3
Weighted-average remaining lease term, operating leases 8 years 9 months 18 days 8 years 10 months 24 days
Weighted-average remaining lease term, finance leases 16 years 9 months 18 days 15 years 10 months 24 days
Weighted-average discount rate, operating leases (percent) 9.70% 10.30%
Weighted-average discount rate, finance leases (percent) 8.70% 9.20%