CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Millions	Total	Common Stock, Non-Exchangeable	Common Stock, Exchangeable	Total PENN Stockholders’ Equity	Preferred Stock	Common Stock Common Stock, Non-Exchangeable	Common Stock Common Stock, Exchangeable	Treasury Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Non-Controlling Interest
Beginning balance (in shares) at Dec. 31, 2023					0
Beginning balance at Dec. 31, 2023	$ 3,199.6			$ 3,202.1	$ 0.0	$ 1.8	$ 0.0	$ (779.5)	$ 4,436.6	$ (335.5)	$ (121.3)	$ (2.5)
Beginning balance (in shares) at Dec. 31, 2023						151,552,694	560,267
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)						246,970
Share-based compensation arrangements	11.9			11.9					11.9
Common stock issuance/Exchangeable share issuance (in shares)							68,048
Exchangeable share conversions (in shares)						71,141	(71,141)
Investment Agreement warrants	14.3			14.3					14.3
Currency translation adjustment	(36.0)			(36.0)							(36.0)
Net income (loss)	(114.9)			(114.7)						(114.7)		(0.2)
Other	(2.9)			(2.9)					(2.9)
Ending balance (in shares) at Mar. 31, 2024					0
Ending balance (in shares) at Mar. 31, 2024						151,870,805	557,174
Ending balance at Mar. 31, 2024	3,072.0			3,074.7	$ 0.0	$ 1.8	$ 0.0	(779.5)	4,459.9	(450.2)	(157.3)	(2.7)
Beginning balance (in shares) at Dec. 31, 2024					0
Beginning balance at Dec. 31, 2024	2,858.4			2,862.7	$ 0.0	$ 1.8	$ 0.0	(779.5)	4,542.4	(647.0)	(255.0)	(4.3)
Beginning balance (in shares) at Dec. 31, 2024		152,229,171	466,534			152,229,171	466,534
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)						334,366
Share-based compensation arrangements	15.6			15.6					15.6
Share repurchases (in shares)						(1,413,882)
Share repurchases	(25.0)			(25.0)				(25.0)
Exchangeable share conversions (in shares)						86,056	(86,056)
Investment Agreement warrants	14.2			14.2					14.2
Currency translation adjustment	(0.3)			(0.3)							(0.3)
Net income (loss)	111.5			111.8						111.8		(0.3)
Other	(5.0)			(5.0)				(0.1)	(4.9)
Ending balance (in shares) at Mar. 31, 2025					0
Ending balance (in shares) at Mar. 31, 2025		151,235,711	380,478			151,235,711	380,478
Ending balance at Mar. 31, 2025	$ 2,969.4			$ 2,974.0	$ 0.0	$ 1.8	$ 0.0	$ (804.6)	$ 4,567.3	$ (535.2)	$ (255.3)	$ (4.6)