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 Income (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)						401,398
Share-based compensation arrangements	26.1			26.1					26.1
Common stock issuance/Exchangeable share issuance (in shares)						4,055	68,048
Common stock issuance	0.1			0.1					0.1
Exchangeable share conversions (in shares)						158,437	158,437
Investment Agreement warrants	28.7			28.7					28.7
Currency translation adjustment	(55.5)			(55.5)							(55.5)
Net income (loss)	(142.0)			(141.5)						(141.5)		(0.5)
Other	(4.1)			(4.1)					(4.1)
Ending balance (in shares) at Jun. 30, 2024					0
Ending balance (in shares) at Jun. 30, 2024						152,116,584	469,878
Ending balance at Jun. 30, 2024	3,052.9			3,055.9	$ 0.0	$ 1.8	$ 0.0	(779.5)	4,487.4	(477.0)	(176.8)	(3.0)
Beginning balance (in shares) at Mar. 31, 2024					0
Beginning 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 Mar. 31, 2024						151,870,805	557,174
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)						154,428
Share-based compensation arrangements	14.2			14.2					14.2
Common stock issuance/Exchangeable share issuance (in shares)						4,055
Common stock issuance	0.1			0.1					0.1
Exchangeable share conversions (in shares)						87,296	87,296
Investment Agreement warrants	14.4			14.4					14.4
Currency translation adjustment	(19.5)			(19.5)							(19.5)
Net income (loss)	(27.1)			(26.8)						(26.8)		(0.3)
Other	(1.2)			(1.2)					(1.2)
Ending balance (in shares) at Jun. 30, 2024					0
Ending balance (in shares) at Jun. 30, 2024						152,116,584	469,878
Ending balance at Jun. 30, 2024	3,052.9			3,055.9	$ 0.0	$ 1.8	$ 0.0	(779.5)	4,487.4	(477.0)	(176.8)	(3.0)
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)						386,650
Share-based compensation arrangements	31.7			31.7					31.7
Share repurchases (in shares)						(7,249,349)
Share repurchases	(115.3)			(115.3)				(115.3)
Exchangeable share conversions (in shares)						86,056	(86,056)
Investment Agreement warrants	28.5			28.5					28.5
Currency translation adjustment	92.0			92.0							92.0
Net income (loss)	93.2			94.4						94.4		(1.2)
Other	(5.9)			(5.9)				(1.0)	(4.9)
Ending balance (in shares) at Jun. 30, 2025					0
Ending balance (in shares) at Jun. 30, 2025		145,452,528	380,478			145,452,528	380,478
Ending balance at Jun. 30, 2025	2,982.6			2,988.1	$ 0.0	$ 1.8	$ 0.0	(895.8)	4,597.7	(552.6)	(163.0)	(5.5)
Beginning balance (in shares) at Mar. 31, 2025					0
Beginning 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)
Beginning balance (in shares) at Mar. 31, 2025						151,235,711	380,478
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)						52,284
Share-based compensation arrangements	16.1			16.1					16.1
Share repurchases (in shares)						(5,835,467)
Share repurchases	(90.3)			(90.3)				(90.3)
Investment Agreement warrants	14.3			14.3					14.3
Currency translation adjustment	92.3			92.3							92.3
Net income (loss)	(18.3)			(17.4)						(17.4)		(0.9)
Other	(0.9)			(0.9)				(0.9)
Ending balance (in shares) at Jun. 30, 2025					0
Ending balance (in shares) at Jun. 30, 2025		145,452,528	380,478			145,452,528	380,478
Ending balance at Jun. 30, 2025	$ 2,982.6			$ 2,988.1	$ 0.0	$ 1.8	$ 0.0	$ (895.8)	$ 4,597.7	$ (552.6)	$ (163.0)	$ (5.5)