Leases - Cash flow information, weighted average remaining term and discount rate (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Gains on sale and leaseback transactions, net	$ 0.0	$ 0.0	$ 0.5
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	249.6	234.7	232.3
Right-of-use assets obtained in exchange for operating lease liabilities	$ 124.2	$ 152.1	$ 97.7
Weighted-average remaining lease term - operating leases	25 years	25 years
Weighted-average discount rate - operating leases	6.70%	6.40%