Leases - Lease Obligations (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Finance leases - ROU assets	$ 59.4	$ 55.0
Finance leases - Accumulated depreciation	(32.6)	(31.7)
Operating leases - ROU assets	174.9	156.7
Operating leases - Accumulated depreciation	(92.5)	(86.5)
Total lease assets	109.2	93.5
Finance leases	(6.8)	(7.6)
Operating leases	(27.1)	(24.0)
Finance leases	(20.6)	(16.1)
Operating leases	(58.2)	(49.6)
Total lease liabilities	$ (112.7)	$ (97.3)