Segment Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Aug. 01, 2021
Segment Reporting Information [Line Items]
Number of reportable segments | segment			5
Revenues:
Revenues	$ 1,626.9	$ 1,545.8	$ 3,191.1	$ 2,820.7
Adjusted EBITDAR:
Adjusted EBITDAR	504.5	586.6	999.2	1,033.6
Rent expense associated with triple net operating leases	(28.0)	(116.5)	(88.1)	(226.9)
Stock-based compensation	(14.5)	(9.2)	(31.5)	(13.4)
Cash-settled stock-based awards variance	9.5	12.4	12.4	(9.1)
Gain (loss) on disposal of assets	(7.3)	0.1	(7.2)	0.2
Contingent purchase price	0.9	(1.2)	1.0	(1.3)
Pre-opening expenses	(2.1)	0.4	(3.6)	(1.2)
Depreciation and amortization	(150.3)	(81.9)	(268.5)	(163.2)
Insurance recoveries, net of deductible charges	0.0	0.0	8.8	0.0
Non-operating items of equity method investments	(0.3)	(1.4)	(2.1)	(3.0)
Interest expense, net	(193.6)	(138.0)	(354.4)	(273.7)
Other	(36.4)	0.5	(84.4)	21.3
Income before income taxes	82.4	251.8	181.6	363.3
Income tax expense	(56.3)	(53.1)	(103.9)	(73.7)
Net income	26.1	198.7	77.7	289.6
Capital expenditures:
Capital expenditures	60.0	38.9	125.6	64.6
Assets:
Investment in and advances to unconsolidated affiliates	250.3		250.3		$ 255.1
Total assets	17,880.8		17,880.8		16,872.1
Sam Houston Race Park and Valley Race Park
Adjusted EBITDAR:
Business acquisition, percentage of voting interests acquired						50.00%
Operating segments | Northeast
Revenues:
Revenues	684.9	652.5	1,343.4	1,223.4
Adjusted EBITDAR:
Adjusted EBITDAR	214.4	231.6	419.6	424.8
Capital expenditures:
Capital expenditures	25.1	20.8	55.7	36.2
Assets:
Investment in and advances to unconsolidated affiliates	0.1		0.1		0.1
Total assets	2,228.7		2,228.7		2,283.6
Operating segments | South
Revenues:
Revenues	338.6	368.2	680.0	664.1
Adjusted EBITDAR:
Adjusted EBITDAR	143.3	177.1	289.8	311.0
Capital expenditures:
Capital expenditures	16.6	6.3	36.3	8.1
Assets:
Investment in and advances to unconsolidated affiliates	0.0		0.0		0.0
Total assets	1,166.2		1,166.2		1,224.6
Operating segments | West
Revenues:
Revenues	153.8	140.4	294.7	237.0
Adjusted EBITDAR:
Adjusted EBITDAR	59.7	61.4	110.9	96.6
Capital expenditures:
Capital expenditures	2.2	0.0	4.0	3.2
Assets:
Investment in and advances to unconsolidated affiliates	0.0		0.0		0.0
Total assets	381.8		381.8		394.8
Operating segments | Midwest
Revenues:
Revenues	296.3	294.8	579.2	529.5
Adjusted EBITDAR:
Adjusted EBITDAR	131.3	142.2	256.8	248.2
Capital expenditures:
Capital expenditures	7.4	3.6	14.2	5.5
Assets:
Investment in and advances to unconsolidated affiliates	82.4		82.4		83.8
Total assets	1,393.9		1,393.9		1,215.8
Operating segments | Interactive
Revenues:
Revenues	154.9	96.0	296.4	182.3
Adjusted EBITDAR:
Adjusted EBITDAR	(20.8)	1.2	(30.8)	2.5
Capital expenditures:
Capital expenditures	2.1	0.6	3.2	1.4
Assets:
Investment in and advances to unconsolidated affiliates	161.3		161.3		164.4
Total assets	2,526.4		2,526.4		2,618.3
Other
Revenues:
Revenues	5.9	1.7	13.2	3.3
Adjusted EBITDAR:
Adjusted EBITDAR	(23.4)	(26.9)	(47.1)	(49.5)
Capital expenditures:
Capital expenditures	6.6	7.6	12.2	10.2
Assets:
Investment in and advances to unconsolidated affiliates	6.5		6.5		6.8
Total assets	10,183.8		10,183.8		$ 9,135.0
Intersegment eliminations
Revenues:
Revenues	$ (7.5)	$ (7.8)	$ (15.8)	$ (18.9)