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Leases - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Residual value of leased asset $ 69.6   $ 69.6   $ 70.1
Carrying value of investment lease 1,900.0   1,900.0   $ 1,400.0
Amortization of ROU assets $ 6.8 $ 7.5 $ 15.4 $ 23.8  
Operating Lease, extension terms     the vast majority of which include one or more options to extend the leases for up to five years resulting in lease terms up to 40 years    
Discontinued Operations          
Amortization of ROU assets       $ 11.7  
Minimum          
Lessor, operating lease, term of contract 24 months   24 months    
Operating lease, remaining lease term 1 year   1 year    
Maximum          
Lessor, operating lease, term of contract 120 months   120 months    
Operating lease, remaining lease term 25 years   25 years