Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Revenues
Revenues	$ 1,765.0	$ 1,663.0	$ 3,437.5	$ 3,269.9
Gaming taxes	(644.9)	(568.6)	(1,300.0)	(1,200.0)
Media and advertising	(85.5)	(112.3)	(185.4)	(248.3)
Segment Adjusted EBITDAR	427.6	393.8	795.6	676.8
Adjusted EBITDAR:
Other category	(35.5)	(26.8)	(74.3)	(53.6)
Rent expense associated with triple net operating lease	(156.0)	(154.9)	(311.9)	(309.7)
Stock-based compensation	(16.1)	(14.2)	(31.7)	(26.1)
Cash-settled stock-based awards variance	3.1	3.1	6.3	11.1
Loss on disposal of assets	(0.1)	(9.1)	(0.3)	(8.9)
Pre-opening expenses	(4.4)		(4.9)
Depreciation and amortization	(110.5)	(109.1)	(218.5)	(217.8)
Impairment loss	(15.0)	0.0	(15.0)	0.0
Insurance recoveries, net of deductible charges		2.7		2.7
Non-operating items of equity method investments	(1.1)	(1.0)	(2.2)	(2.1)
Interest expense, net	(95.9)	(119.4)	(206.7)	(238.5)
Interest income	2.1	5.8	5.3	12.9
Gain on financing arrangement	0.0	0.0	215.1	0.0
Loss on early extinguishment of debt	(11.8)	0.0	(11.8)	0.0
Other	1.7	(1.2)	2.3	(4.6)
Income (loss) before income taxes	(11.9)	(30.3)	147.3	(157.8)
Income tax benefit (expense)	(6.4)	3.2	(54.1)	15.8
Net income (loss)	(18.3)	(27.1)	93.2	(142.0)
Corporate overhead costs	38.7	24.5	74.7	49.4
Proxy related costs for legal and advisory	9.4		17.1
Capital expenditures:
Capital expenditures	159.4	88.2	284.6	129.6
Assets:
Investment in and advances to unconsolidated affiliates	82.4		82.4		$ 86.2
Total assets	15,206.7		15,206.7		15,261.7
Sportsbook Agreement
Adjusted EBITDAR:
Marketing expenses	37.5	50.0	75.0	100.0
Investment Agreement
Adjusted EBITDAR:
Marketing expenses	14.3	18.8	28.5	37.5
Operating Segments
Revenues
Revenues	1,765.0	1,663.0	3,437.5	3,269.9
Operating Segments | Northeast
Revenues
Revenues	711.6	696.3	1,392.5	1,381.0
Gaming taxes	(290.4)	(285.0)	(569.9)	(559.9)
Compensation and benefits	(103.6)	(103.0)	(207.1)	(207.2)
Other segment items	(108.1)	(103.6)	(211.8)	(206.6)
Segment Adjusted EBITDAR	209.5	204.7	403.7	407.3
Capital expenditures:
Capital expenditures	31.4	13.3	44.9	18.9
Assets:
Investment in and advances to unconsolidated affiliates	0.1		0.1		0.1
Total assets	1,807.9		1,807.9		1,808.1
Operating Segments | South
Revenues
Revenues	302.2	298.2	590.5	596.7
Gaming taxes	(65.8)	(66.9)	(129.2)	(133.0)
Compensation and benefits	(59.6)	(54.1)	(116.4)	(110.5)
Other segment items	(72.0)	(65.8)	(136.8)	(128.3)
Segment Adjusted EBITDAR	104.8	111.4	208.1	224.9
Capital expenditures:
Capital expenditures	17.1	23.6	30.8	35.4
Assets:
Investment in and advances to unconsolidated affiliates	0.0		0.0		0.0
Total assets	1,310.8		1,310.8		1,301.7
Operating Segments | West
Revenues
Revenues	137.7	135.3	267.4	264.1
Gaming taxes	(25.4)	(23.9)	(49.1)	(47.9)
Compensation and benefits	(31.1)	(31.5)	(62.4)	(61.2)
Other segment items	(27.7)	(29.3)	(56.7)	(58.5)
Segment Adjusted EBITDAR	53.5	50.6	99.2	96.5
Capital expenditures:
Capital expenditures	42.8	11.4	83.3	12.9
Assets:
Investment in and advances to unconsolidated affiliates	0.0		0.0		0.0
Total assets	539.0		539.0		453.2
Operating Segments | Midwest
Revenues
Revenues	297.0	298.1	579.9	589.3
Gaming taxes	(78.8)	(78.9)	(153.5)	(156.3)
Compensation and benefits	(44.7)	(43.4)	(88.8)	(86.4)
Other segment items	(51.7)	(45.9)	(102.0)	(99.7)
Segment Adjusted EBITDAR	121.8	129.9	235.6	246.9
Capital expenditures:
Capital expenditures	64.5	38.2	116.2	57.4
Assets:
Investment in and advances to unconsolidated affiliates	79.9		79.9		80.9
Total assets	1,575.8		1,575.8		1,503.7
Operating Segments | Interactive
Revenues
Revenues	316.1	232.6	606.2	440.3
Gaming taxes	(184.5)	(113.9)	(353.1)	(263.5)
Compensation and benefits	(37.6)	(41.3)	(74.3)	(93.6)
Media and advertising	(73.5)	(100.1)	(162.0)	(222.9)
Other segment items	(82.5)	(80.1)	(167.8)	(159.1)
Segment Adjusted EBITDAR	(62.0)	(102.8)	(151.0)	(298.8)
Adjusted EBITDAR:
Tax gross up	137.9	82.1	266.1	198.7
Capital expenditures:
Capital expenditures	0.1	0.3	3.7	1.0
Assets:
Investment in and advances to unconsolidated affiliates	0.0		0.0		0.0
Total assets	2,400.9		2,400.9		2,385.6
Other
Revenues
Revenues	5.7	5.9	11.0	11.9
Capital expenditures:
Capital expenditures	3.5	1.4	5.7	4.0
Assets:
Investment in and advances to unconsolidated affiliates	2.4		2.4		5.2
Total assets	7,572.3		7,572.3		$ 7,809.4
Intersegment Eliminations
Revenues
Revenues	$ (5.3)	$ (3.4)	$ (10.0)	$ (13.4)