Segment Information (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) segment	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Aug. 01, 2021
Segment Reporting Information [Line Items]
Number of reportable segments | segment			5
Revenues:
Revenues	$ 1,625.0	$ 1,511.8	$ 4,816.1	$ 4,332.5
Adjusted EBITDAR:
Adjusted EBITDAR	471.9	480.3	1,471.1	1,513.9
Rent expense associated with triple net operating leases	(31.5)	(116.0)	(119.6)	(342.9)
Stock-based compensation	(13.6)	(8.5)	(45.1)	(21.9)
Cash-settled stock-based awards variance	3.8	(5.2)	16.2	(14.3)
Gain (loss) on disposal of assets	0.2	(0.3)	(7.0)	(0.1)
Contingent purchase price	(0.1)	(0.6)	0.9	(1.9)
Pre-opening expenses	(0.5)	(1.6)	(4.1)	(2.8)
Depreciation and amortization	(148.7)	(83.7)	(417.2)	(246.9)
Impairment losses	(104.6)	0.0	(104.6)	0.0	$ 0.0	$ (623.4)
Insurance recoveries, net of deductible charges	1.9	0.0	10.7	0.0
Non-operating items of equity method investments	(2.6)	(3.0)	(4.7)	(6.0)
Interest expense, net	(193.3)	(144.9)	(547.7)	(418.6)
Other	(41.7)	6.0	(126.1)	27.3
Income (loss) before income taxes	(58.8)	122.5	122.8	485.8
Income tax benefit (expense)	182.0	(36.4)	78.1	(110.1)
Net income	123.2	86.1	200.9	375.7
Equity securities, FV-NI, unrealized (loss) gain	(10.8)	10.1	(66.4)	28.9
Acquisition and transaction related costs	31.9	12.9	46.3	14.7
Loss on early extinguishment of debt			10.4	0.0
Capital expenditures:
Capital expenditures	64.0	73.2	189.6	137.8
Assets:
Investment in and advances to unconsolidated affiliates	246.3		246.3		255.1
Total assets	17,535.1		17,535.1		16,872.1
Senior Secured Credit Facility
Adjusted EBITDAR:
Loss on early extinguishment of debt			10.4
Sam Houston Race Park and Valley Race Park
Adjusted EBITDAR:
Business acquisition, percentage of voting interests acquired							50.00%
Northeast
Adjusted EBITDAR:
Impairment losses			(102.8)
Operating Segments | Northeast
Revenues:
Revenues	685.4	672.4	2,028.8	1,895.8
Adjusted EBITDAR:
Adjusted EBITDAR	217.9	221.1	637.5	645.9
Capital expenditures:
Capital expenditures	26.4	35.1	82.1	71.3
Assets:
Investment in and advances to unconsolidated affiliates	0.1		0.1		0.1
Total assets	2,172.8		2,172.8		2,283.6
Operating Segments | South
Revenues:
Revenues	329.8	318.2	1,009.8	982.3
Adjusted EBITDAR:
Adjusted EBITDAR	139.9	137.0	429.7	448.0
Capital expenditures:
Capital expenditures	14.8	16.4	51.1	24.5
Assets:
Investment in and advances to unconsolidated affiliates	0.0		0.0		0.0
Total assets	1,169.7		1,169.7		1,224.6
Operating Segments | West
Revenues:
Revenues	156.5	145.7	451.2	382.7
Adjusted EBITDAR:
Adjusted EBITDAR	60.5	54.5	171.4	151.1
Capital expenditures:
Capital expenditures	3.3	2.3	7.3	5.5
Assets:
Investment in and advances to unconsolidated affiliates	0.0		0.0		0.0
Total assets	375.0		375.0		394.8
Operating Segments | Midwest
Revenues:
Revenues	298.4	285.7	877.6	815.2
Adjusted EBITDAR:
Adjusted EBITDAR	129.4	125.8	386.2	374.0
Capital expenditures:
Capital expenditures	11.3	7.3	25.5	12.8
Assets:
Investment in and advances to unconsolidated affiliates	79.9		79.9		83.8
Total assets	1,382.4		1,382.4		1,215.8
Operating Segments | Interactive
Revenues:
Revenues	158.7	93.0	455.1	275.3
Adjusted EBITDAR:
Adjusted EBITDAR	(49.3)	(32.0)	(80.1)	(29.5)
Capital expenditures:
Capital expenditures	6.5	2.7	9.7	4.1
Assets:
Investment in and advances to unconsolidated affiliates	160.2		160.2		164.4
Total assets	4,228.8		4,228.8		2,618.3
Other
Revenues:
Revenues	4.2	3.5	17.4	6.8
Adjusted EBITDAR:
Adjusted EBITDAR	(26.5)	(26.1)	(73.6)	(75.6)
Capital expenditures:
Capital expenditures	1.7	9.4	13.9	19.6
Assets:
Investment in and advances to unconsolidated affiliates	6.1		6.1		6.8
Total assets	8,206.4		8,206.4		$ 9,135.0
Intersegment eliminations
Revenues:
Revenues	$ (8.0)	$ (6.7)	$ (23.8)	$ (25.6)