Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplemental disclosures of cash flow information:
Cash paid for interest	$ 208.8	$ 207.3	$ 218.9
Cash paid (refunded) for income taxes	0.3	(0.7)	4.0
Cash paid for finance leases included in cash flows from financing activities	0.0	0.0	1.2
Cash paid for operating leases included in cash flows from operating activities	24.6	24.6	29.8
Non-cash investing activities:
Non-cash accrual of property and equipment	12.0	(39.6)	(6.5)
Non-cash right-of-use assets obtained in exchange for operating lease liabilities	18.7	9.8	104.1
Non-cash acquisitions	16.9	0.0	0.0
Non-cash financing activities:
Receivable from sale of VEX	0.0	10.0	0.0
Redemption of non-controlling interest	$ 0.0	$ (4.0)	$ 0.0