v3.21.1
LEASES - Cash flow and supplemental information (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash flows used in finance leases $ (1.0) $ (1.6)
Operating cash flows used in operating leases (136.7) (240.3)
Financing cash flows used in finance leases (1.9) (2.3)
Landlord contributions:    
Operating cashflows provided by operating leases 3.7 16.1
Supplemental disclosure of noncash leasing activities:    
Right-of-use assets obtained in exchange for new operating lease liabilities $ 23.5 $ 69.7