Segment Information - Schedule of Adjusted EBITDA by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Marketing and advertising	$ (90.7)	$ (83.4)	$ (52.9)
Equity in income of unconsolidated affiliates	144.9	146.3	152.7
Adjusted EBITDA	1,159.2	1,023.9	763.6
Operating Segments
Segment Reporting Information [Line Items]
Adjusted EBITDA	1,247.1	1,096.1	823.5
Live and Historical | Operating Segments
Segment Reporting Information [Line Items]
Net revenue	1,267.0	1,084.6	646.4
Pari-mutuel taxes and purses	(300.0)	(262.5)	(167.1)
Gaming taxes	(5.7)	(5.2)	(1.5)
Marketing and advertising	(42.1)	(37.6)	(19.8)
Salaries and benefits	(127.0)	(107.0)	(63.4)
Content expense	(6.4)	(6.5)	(3.4)
Selling, general and administrative expense	(40.1)	(31.9)	(18.6)
Maintenance, insurance and utilities	(46.5)	(43.2)	(24.3)
Gaming equipment rental and technology costs	(41.6)	(48.7)	(18.6)
Food and beverage costs	(12.9)	(11.3)	(6.0)
Other operating expense	(70.6)	(56.6)	(36.6)
Equity in income of unconsolidated affiliates	0.0	0.0	0.0
Other income	0.5	1.3	0.4
Adjusted EBITDA	574.6	475.4	287.5
Wagering Services and Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net revenue	500.7	458.4	441.6
Pari-mutuel taxes and purses	(19.7)	(19.9)	(18.7)
Gaming taxes	(2.4)	(2.7)	(8.3)
Marketing and advertising	(8.9)	(9.8)	(13.0)
Salaries and benefits	(32.8)	(29.3)	(26.8)
Content expense	(205.8)	(205.1)	(203.3)
Selling, general and administrative expense	(15.5)	(12.4)	(9.7)
Maintenance, insurance and utilities	(4.2)	(3.8)	(3.0)
Gaming equipment rental and technology costs	(3.5)	(3.7)	(3.4)
Food and beverage costs	0.0	0.0	0.0
Other operating expense	(42.6)	(40.6)	(41.4)
Equity in income of unconsolidated affiliates	0.0	0.0	0.0
Other income	0.3	1.0	0.1
Adjusted EBITDA	165.6	132.1	114.1
Gaming | Operating Segments
Segment Reporting Information [Line Items]
Net revenue	1,045.4	974.6	761.8
Pari-mutuel taxes and purses	(43.5)	(39.2)	(36.4)
Gaming taxes	(291.6)	(283.6)	(241.7)
Marketing and advertising	(35.4)	(35.4)	(18.9)
Salaries and benefits	(164.6)	(146.0)	(102.7)
Content expense	(8.5)	(8.8)	(8.3)
Selling, general and administrative expense	(46.1)	(42.7)	(31.3)
Maintenance, insurance and utilities	(42.1)	(40.0)	(31.1)
Gaming equipment rental and technology costs	(15.4)	(15.6)	(11.8)
Food and beverage costs	(16.7)	(14.9)	(10.0)
Other operating expense	(62.9)	(53.2)	(38.6)
Equity in income of unconsolidated affiliates	186.4	191.6	184.5
Other income	1.9	1.8	6.4
Adjusted EBITDA	$ 506.9	$ 488.6	$ 421.9