Segment Information - Segment Information (Details) - USD ($) $ in Millions		12 Months Ended
	Feb. 17, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Aug. 08, 2023
Revenues [Abstract]
Revenues		$ 6,578.1	$ 6,362.9	$ 6,401.7
Gaming taxes		(2,300.0)	(2,300.0)	(2,200.0)
Media and advertising		(456.4)	(173.3)	(94.8)
ADJUSTED EBITDAR		1,409.0	1,623.4	2,037.0
Other operating benefits (costs) and other income (expenses):
Other category		(116.7)	(110.8)	(97.6)
Rent expense associated with triple net operating lease		(620.1)	(591.1)	(149.6)
Stock-based compensation		(52.9)	(85.9)	(58.1)
Cash-settled stock-based awards variance		18.7	13.8	15.5
Loss on disposal of assets		(10.0)	(0.1)	(7.9)
Contingent purchase price		1.2	(1.9)	0.6
Pre-opening expenses				(4.1)
Depreciation and amortization		(433.6)	(435.1)	(567.5)
Impairment losses		(89.1)	(130.6)	(118.2)
Insurance recoveries, net of deductible charges		5.5	13.9	10.7
Non-operating items of equity method investments		(4.4)	(7.4)	(7.9)
Interest expense, net		(470.5)	(464.7)	(758.2)
Interest income		23.6	40.3	18.3
Loss on disposal of Barstool		0.0	(923.2)	0.0
Gain on Barstool Acquisition, net			83.4
Gain on REIT transactions, net		0.0	500.8	0.0
Loss on early extinguishment of debt		(0.3)	0.0	(10.4)
Other		(1.7)	(24.4)	(127.3)
Income (loss) before income taxes		(341.3)	(499.6)	175.3
Income tax benefit		28.0	8.2	46.4
Net income (loss)		(313.3)	(491.4)	221.7
Corporate overhead costs		104.8	106.7	98.5
Unrealized holding losses on equity securities		0.1	6.4	69.9
Non-recurring acquisition and transaction cost			25.0	52.1
Capital expenditures:
Capital expenditures		482.7	360.0	263.4
Assets:
Investment in and advances to unconsolidated affiliates		86.2	84.9	248.6
Total assets		15,261.7	16,064.2	17,502.1
Sportsbook Agreement
Other operating benefits (costs) and other income (expenses):
Marketing expenses		179.2	33.3
Investment Agreement
Other operating benefits (costs) and other income (expenses):
Marketing expenses		67.9	12.5
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Barstool Sports, Inc
Other operating benefits (costs) and other income (expenses):
Loss on disposal of Barstool			(923.2)
Disposal group, percentage of ownership interest sold					100.00%
Northeast
Other operating benefits (costs) and other income (expenses):
Impairment losses				(116.4)
Operating segments
Revenues [Abstract]
Revenues		6,578.1	6,362.9	6,401.7
Operating segments | Northeast
Revenues [Abstract]
Revenues		2,755.7	2,738.4	2,695.9
Gaming taxes		(1,113.2)	(1,115.5)	(1,120.1)
Compensation and benefits		(414.5)	(388.4)	(366.7)
Other segment items		(427.0)	(403.5)	(366.6)
ADJUSTED EBITDAR		801.0	831.0	842.5
Capital expenditures:
Capital expenditures		81.9	113.7	110.6
Assets:
Investment in and advances to unconsolidated affiliates		0.1	0.0	0.1
Total assets		1,808.1	1,827.4	2,231.8
Operating segments | South
Revenues [Abstract]
Revenues		1,169.0	1,216.4	1,314.2
Gaming taxes		(251.9)	(263.1)	(286.5)
Compensation and benefits		(222.6)	(215.3)	(219.0)
Other segment items		(261.3)	(243.9)	(260.6)
ADJUSTED EBITDAR		433.2	494.1	548.1
Capital expenditures:
Capital expenditures		97.5	93.0	70.7
Assets:
Investment in and advances to unconsolidated affiliates		0.0	0.0	0.0
Total assets		1,301.7	1,244.5	1,191.9
Operating segments | West
Revenues [Abstract]
Revenues		525.3	528.5	581.9
Gaming taxes		(94.2)	(93.6)	(91.5)
Compensation and benefits		(123.5)	(114.7)	(142.6)
Other segment items		(120.1)	(116.0)	(127.7)
ADJUSTED EBITDAR		187.5	204.2	220.1
Capital expenditures:
Capital expenditures		64.8	30.3	11.5
Assets:
Investment in and advances to unconsolidated affiliates		0.0	0.0	0.0
Total assets		453.2	388.6	372.4
Operating segments | Midwest
Revenues [Abstract]
Revenues		1,172.2	1,172.6	1,159.6
Gaming taxes		(305.1)	(309.4)	(311.3)
Compensation and benefits		(174.6)	(165.4)	(153.8)
Other segment items		(205.7)	(201.2)	(193.3)
ADJUSTED EBITDAR		486.8	496.6	501.2
Capital expenditures:
Capital expenditures		222.9	73.6	35.8
Assets:
Investment in and advances to unconsolidated affiliates		80.9	80.8	81.5
Total assets		1,503.7	1,241.1	1,305.5
Operating segments | Interactive
Revenues [Abstract]
Revenues		959.9	718.8	663.1
Gaming taxes		(566.3)	(498.6)	(346.5)
Compensation and benefits		(168.3)	(176.7)	(112.8)
Media and advertising		(407.0)	(144.9)	(76.1)
Other segment items		(317.8)	(301.1)	(202.6)
ADJUSTED EBITDAR		(499.5)	(402.5)	(74.9)
Other operating benefits (costs) and other income (expenses):
Tax gross up		435.6	390.4	251.6
Capital expenditures:
Capital expenditures		2.5	33.2	19.7
Assets:
Investment in and advances to unconsolidated affiliates		0.0	0.0	160.9
Total assets		2,385.6	2,549.9	4,233.7
Operating segments | Interactive | Online Sports Betting And ICasino
Revenues [Abstract]
Revenues			390.4	251.6
Other
Revenues [Abstract]
Revenues		19.6	20.2	21.3
Capital expenditures:
Capital expenditures		13.1	16.2	15.1
Assets:
Investment in and advances to unconsolidated affiliates		5.2	4.1	6.1
Total assets		7,809.4	8,812.7	8,166.8
Intersegment eliminations
Revenues [Abstract]
Revenues		$ (23.6)	$ (32.0)	$ (34.3)
Barstool Acquisition
Other operating benefits (costs) and other income (expenses):
Business acquisition, percentage of voting interests acquired	64.00%
Gain on transaction	$ 66.5
Gain on disposition of business	$ 16.9