Segment Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) segment	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			4
Revenues:
Revenues	$ 1,545.8	$ 305.5	$ 2,820.7	$ 1,421.6
Adjusted EBITDAR:
Adjusted EBITDAR	586.6	24.5	1,033.6	276.8
Rent expense associated with triple net operating leases	(116.5)	(103.8)	(226.9)	(201.3)
Stock-based compensation	(9.2)	(2.9)	(13.4)	(8.9)
Cash-settled stock-based awards variance	12.4	(16.1)	(9.1)	(7.2)
Gain on disposal of assets	0.1	28.5	0.2	27.9
Contingent purchase price	(1.2)	(0.8)	(1.3)	1.4
Pre-opening expenses	0.4	(3.5)	(1.2)	(6.7)
Depreciation and amortization	(81.9)	(91.9)	(163.2)	(187.6)
Impairment losses	0.0	0.0	0.0	(616.1)
Insurance recoveries, net of deductible charges	0.0	0.0	0.0	0.1
Non-operating items of equity method investments	(1.4)	(1.1)	(3.0)	(2.0)
Interest expense, net	(138.0)	(135.0)	(273.7)	(264.8)
Other	0.5	29.3	21.3	7.5
Income (loss) before income taxes	251.8	(272.8)	363.3	(980.9)
Income tax benefit (expense)	(53.1)	58.4	(73.7)	157.9
Net income (loss)	198.7	(214.4)	289.6	(823.0)
Capital expenditures:
Capital expenditures	38.9	30.9	64.6	73.7
Assets:
Investment in and advances to unconsolidated affiliates	277.3		277.3		$ 266.8
Total assets	15,078.2		15,078.2		14,667.3
Operating Segments | Northeast
Revenues:
Revenues	652.5	102.7	1,223.4	623.4
Adjusted EBITDAR:
Adjusted EBITDAR	231.6	(3.6)	424.8	120.9
Capital expenditures:
Capital expenditures	20.8	21.7	36.2	52.0
Assets:
Investment in and advances to unconsolidated affiliates	0.1		0.1		0.1
Total assets	2,059.5		2,059.5		1,958.4
Operating Segments | South
Revenues:
Revenues	368.2	121.5	664.1	344.8
Adjusted EBITDAR:
Adjusted EBITDAR	177.1	44.4	311.0	97.0
Capital expenditures:
Capital expenditures	6.3	3.8	8.1	7.8
Assets:
Investment in and advances to unconsolidated affiliates	0.0		0.0		0.0
Total assets	1,206.2		1,206.2		1,165.4
Operating Segments | West
Revenues:
Revenues	140.4	17.7	237.0	144.3
Adjusted EBITDAR:
Adjusted EBITDAR	61.4	(3.0)	96.6	21.6
Capital expenditures:
Capital expenditures	0.0	1.6	3.2	4.1
Assets:
Investment in and advances to unconsolidated affiliates	0.0		0.0		0.0
Total assets	414.7		414.7		401.5
Operating Segments | Midwest
Revenues:
Revenues	294.8	36.0	529.5	264.1
Adjusted EBITDAR:
Adjusted EBITDAR	142.2	(4.6)	248.2	64.9
Capital expenditures:
Capital expenditures	3.6	1.3	5.5	4.9
Assets:
Investment in and advances to unconsolidated affiliates	86.3		86.3		85.2
Total assets	1,225.5		1,225.5		1,161.1
Other
Revenues:
Revenues	97.7	27.6	185.6	47.9
Adjusted EBITDAR:
Adjusted EBITDAR	(25.7)	(8.7)	(47.0)	(27.6)
Capital expenditures:
Capital expenditures	8.2	2.5	11.6	4.9
Assets:
Investment in and advances to unconsolidated affiliates	190.9		190.9		181.5
Total assets	10,172.3		10,172.3		$ 9,980.9
Intersegment eliminations
Revenues:
Revenues	$ (7.8)	$ 0.0	$ (18.9)	$ (2.9)