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	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Non-Controlling Interest
Beginning balance (in shares) at Dec. 31, 2022					581
Beginning balance at Dec. 31, 2022	$ 3,596.6			$ 3,597.7	$ 19.4	$ 1.7	$ 0.0	$ (629.5)	$ 4,220.2	$ 154.5	$ (168.6)	$ (1.1)
Beginning balance (in shares) at Dec. 31, 2022						152,903,708	620,019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)						598,383
Share-based compensation arrangements	71.4			71.4					71.4
Share issuance in connection with acquisitions (in shares)						2,442,809
Share issuance in connection with acquisitions	$ 80.8			80.8					80.8
Share repurchases (in shares)	(5,438,221)					(5,438,221)
Share repurchases	$ (149.8)			(149.8)				(149.8)
Preferred stock conversions (in shares)					581	580,600
Preferred stock conversions	0.0				$ (19.4)				19.4
Common stock issuance & Exchangeable share issuance (in shares)						4,055	2,854
Common stock issuance & Exchangeable share issuance	0.1			0.1					0.1
Exchangeable share conversions (in shares)						62,485	62,485
Currency translation adjustment	(0.1)			(0.1)							(0.1)
Net loss	(132.6)			(131.9)						(131.9)		(0.7)
Other	14.4			14.4		$ 0.1		(0.3)	14.6
Ending balance (in shares) at Sep. 30, 2023					0
Ending balance (in shares) at Sep. 30, 2023						151,153,819	560,388
Ending balance at Sep. 30, 2023	3,480.8			3,482.6	$ 0.0	$ 1.8	$ 0.0	(779.6)	4,406.5	22.6	(168.7)	(1.8)
Beginning balance (in shares) at Jun. 30, 2023					354
Beginning balance at Jun. 30, 2023	4,208.8			4,210.3	$ 11.8	$ 1.8	$ 0.0	(779.7)	4,353.0	747.4	(124.0)	(1.5)
Beginning balance (in shares) at Jun. 30, 2023						150,373,466	560,388
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)						426,553
Share-based compensation arrangements	$ 35.2			35.2					35.2
Share repurchases (in shares)	0
Preferred stock conversions (in shares)					354	353,800
Preferred stock conversions	$ 0.0				$ (11.8)				11.8
Currency translation adjustment	(44.7)			(44.7)							(44.7)
Net loss	(725.1)			(724.8)						(724.8)		(0.3)
Other	6.6			6.6				0.1	6.5
Ending balance (in shares) at Sep. 30, 2023					0
Ending balance (in shares) at Sep. 30, 2023						151,153,819	560,388
Ending balance at Sep. 30, 2023	3,480.8			3,482.6	$ 0.0	$ 1.8	$ 0.0	(779.6)	4,406.5	22.6	(168.7)	(1.8)
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			151,552,694	560,267
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)						440,467
Share-based compensation arrangements	$ 39.0			39.0					39.0
Share repurchases (in shares)	0
Common stock issuance & Exchangeable share issuance (in shares)						4,055	68,048
Common stock issuance & Exchangeable share issuance	$ 0.1			0.1					0.1
Exchangeable share conversions (in shares)						159,372	159,372
Investment Agreement warrants (Note 11)	43.1			43.1					43.1
Currency translation adjustment	(36.9)			(36.9)							(36.9)
Net loss	(179.5)			(178.2)						(178.2)		(1.3)
Other	(4.5)			(4.5)					(4.5)
Ending balance (in shares) at Sep. 30, 2024					0
Ending balance (in shares) at Sep. 30, 2024		152,156,588	468,943			152,156,588	468,943
Ending balance at Sep. 30, 2024	3,060.9			3,064.7	$ 0.0	$ 1.8	$ 0.0	(779.5)	4,514.3	(513.7)	(158.2)	(3.8)
Beginning balance (in shares) at Jun. 30, 2024					0
Beginning 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 Jun. 30, 2024						152,116,584	469,878
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)						39,069
Share-based compensation arrangements	$ 12.9			12.9					12.9
Share repurchases (in shares)	0
Exchangeable share conversions (in shares)						935	935
Investment Agreement warrants (Note 11)	$ 14.4			14.4					14.4
Currency translation adjustment	18.6			18.6							18.6
Net loss	(37.5)			(36.7)						(36.7)		(0.8)
Other	(0.4)			(0.4)					(0.4)
Ending balance (in shares) at Sep. 30, 2024					0
Ending balance (in shares) at Sep. 30, 2024		152,156,588	468,943			152,156,588	468,943
Ending balance at Sep. 30, 2024	$ 3,060.9			$ 3,064.7	$ 0.0	$ 1.8	$ 0.0	$ (779.5)	$ 4,514.3	$ (513.7)	$ (158.2)	$ (3.8)