Investment in and Advances to Unconsolidated Affiliates - Affiliate Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments in and Advances to Affiliates [Line Items]
Current assets	$ 520.3	$ 501.5
Property and equipment, net	1,035.8	994.9
Other assets, net	18.8	18.9
Total assets	3,036.9	2,981.6	$ 2,981.6
Current liabilities	432.2	395.0
Other liabilities	50.6	52.6
Members' deficit	318.7	307.7
Total liabilities and shareholders' equity	3,036.9	2,981.6
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Investments in and Advances to Affiliates [Line Items]
Current assets	96.8	96.0
Property and equipment, net	336.4	312.3
Other assets, net	263.5	264.1
Total assets	696.7	672.4
Current liabilities	128.6	95.3
Long-term debt	807.4	786.9
Other liabilities	3.6	20.6
Members' deficit	(242.9)	(230.4)
Total liabilities and shareholders' equity	$ 696.7	$ 672.4