Lease Disclosures - Components of Lease Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Minimum lease payments	$ 96.0	$ 97.2	$ 102.8
Variable lease income	15.3	5.2	11.5
Total operating lease income	$ 111.3	$ 102.4	$ 114.3