Segment Information (Details) $ in Millions		12 Months Ended
	Aug. 01, 2021 USD ($)	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jul. 31, 2021
Segment Reporting Information [Line Items]
Number of reportable segments | segment		5
Revenues:
Total		$ 6,401.7	$ 5,905.0	$ 3,578.7
Adjusted EBITDAR:
Adjusted EBITDAR		1,939.4	1,994.4	1,094.8
Rent expense associated with triple net operating lease		(149.6)	(454.4)	(419.8)
Stock-based compensation		(58.1)	(35.1)	(14.5)
Cash-settled stock-based awards variance		15.5	(1.2)	(67.2)
Gain (loss) on disposal of assets		(7.9)	(1.1)	29.2
Contingent purchase price		0.6	(1.9)	1.1
Pre-opening expenses		(4.1)	(5.4)	(11.8)
Depreciation and amortization		(567.5)	(344.5)	(366.7)
Impairment losses		(118.2)	0.0	(623.4)
Insurance recoveries, net of deductible charges		10.7	0.0	0.1
Non-operating items of equity method investments		(7.9)	(7.7)	(4.7)
Interest expense, net		(758.2)	(562.8)	(544.1)
Interest income		18.3	1.1	0.9
Loss on early extinguishment of debt		(10.4)	0.0	(1.2)
Other		(127.3)	(42.3)	93.1
Income (loss) before income taxes		175.3	539.1	(834.2)
Income tax benefit (expense)		46.4	(118.6)	165.1
Net income (loss)		221.7	420.5	(669.1)
Holding loss on equity securities		69.9	24.9	(106.7)
Acquisition and transaction related costs		52.1	43.1
Capital expenditures:
Capital expenditures		263.4	244.1	137.0
Assets:
Investment in and advances to unconsolidated affiliates		248.6	255.1	266.8
Total assets		17,502.1	16,872.1	14,667.3
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%				50.00%
Gain on investments	$ 29.9
Northeast segment
Adjusted EBITDAR:
Impairment losses		(116.4)
Operating segments | Northeast segment
Revenues:
Total		2,695.9	2,552.4	1,639.3
Adjusted EBITDAR:
Adjusted EBITDAR		842.5	848.4	478.9
Capital expenditures:
Capital expenditures		110.6	144.8	78.0
Assets:
Investment in and advances to unconsolidated affiliates		0.1	0.1	0.1
Total assets		2,231.8	2,283.6	1,958.4
Operating segments | South segment
Revenues:
Total		1,314.2	1,322.2	849.6
Adjusted EBITDAR:
Adjusted EBITDAR		548.1	587.0	318.9
Capital expenditures:
Capital expenditures		70.7	39.0	15.8
Assets:
Investment in and advances to unconsolidated affiliates		0.0	0.0	0.0
Total assets		1,191.9	1,224.6	1,165.4
Operating segments | West segment
Revenues:
Total		581.9	521.4	302.5
Adjusted EBITDAR:
Adjusted EBITDAR		220.1	195.0	82.2
Capital expenditures:
Capital expenditures		11.5	8.5	8.2
Assets:
Investment in and advances to unconsolidated affiliates		0.0	0.0	0.0
Total assets		372.4	394.8	401.5
Operating segments | Midwest segment
Revenues:
Total		1,159.6	1,102.7	681.4
Adjusted EBITDAR:
Adjusted EBITDAR		501.2	500.1	258.3
Capital expenditures:
Capital expenditures		35.8	19.8	15.1
Assets:
Investment in and advances to unconsolidated affiliates		81.5	83.8	85.2
Total assets		1,305.5	1,215.8	1,161.1
Operating segments | Interactive
Revenues:
Total		663.1	432.9	121.1
Adjusted EBITDAR:
Adjusted EBITDAR		(74.9)	(35.4)	37.2
Capital expenditures:
Capital expenditures		19.7	6.3	9.1
Assets:
Investment in and advances to unconsolidated affiliates		160.9	164.4	149.3
Total assets		4,233.7	2,618.3	434.1
Other
Revenues:
Total		21.3	10.6	3.9
Adjusted EBITDAR:
Adjusted EBITDAR		(97.6)	(100.7)	(80.7)
Capital expenditures:
Capital expenditures		15.1	25.7	10.8
Assets:
Investment in and advances to unconsolidated affiliates		6.1	6.8	32.2
Total assets		8,166.8	9,135.0	9,546.8
Intersegment Eliminations
Revenues:
Total		$ (34.3)	$ (37.2)	$ (19.1)