CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock, Non-Exchangeable	Common Stock, Exchangeable	Total PENN Stockholders’ Equity	Total PENN Stockholders’ Equity Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Common Stock Common Stock, Non-Exchangeable	Common Stock Common Stock, Exchangeable	Treasury Stock	Additional Paid-In Capital	Additional Paid-In Capital Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings (Accumulated Deficit)	Retained Earnings (Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Non-Controlling Interest
Beginning balance (in shares) at Dec. 31, 2021							775
Beginning balance at Dec. 31, 2021	$ 4,097.1	$ (69.3)			$ 4,097.8	$ (69.3)	$ 25.8	$ 1.7	$ 0.0	$ (28.4)	$ 4,239.6	$ (88.2)	$ (86.5)	$ 18.9	$ (54.4)	$ (0.7)
Beginning balance (in shares) at Dec. 31, 2021								169,561,883	653,059
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)								281,759
Share-based compensation arrangements	$ 45.1				45.1						45.1
Share repurchases (in shares)	(14,690,394)							(14,690,394)
Share repurchases	$ (510.1)				(510.1)					(510.1)
Preferred stock conversions (in shares)							(194)	194,200
Preferred stock conversions	0.0				0.0		$ (6.4)				6.4
Exchangeable share issuance / Common stock issuance (in shares)								68,055
Exchangeable share issuance / Common stock issuance	2.2				2.2						2.2
Exchangeable share conversions (in shares)								32,706	(32,706)
Exchangeable share conversions				$ 0.0
Currency translation adjustment	(146.7)				(146.7)										(146.7)
Net income (loss)	200.9				201.3								201.3			(0.4)
Other	(3.2)				(3.2)						(3.2)
Ending balance (in shares) at Sep. 30, 2022							581
Ending balance at Sep. 30, 2022	3,616.0				3,617.1		$ 19.4	$ 1.7	$ 0.0	(538.5)	4,201.9		133.7		(201.1)	(1.1)
Ending balance (in shares) at Sep. 30, 2022								155,448,209	620,353
Beginning balance (in shares) at Jun. 30, 2022							581
Beginning balance at Jun. 30, 2022	3,766.0				3,766.8		$ 19.4	$ 1.7	$ 0.0	(370.5)	4,187.3		10.2		(81.3)	(0.8)
Beginning balance (in shares) at Jun. 30, 2022								160,725,723	624,658
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)								62,935
Share-based compensation arrangements	$ 13.6				13.6						13.6
Share repurchases (in shares)	(5,348,809)							(5,348,809)
Share repurchases	$ (168.0)				(168.0)					(168.0)
Exchangeable share issuance / Common stock issuance (in shares)								4,055
Exchangeable share issuance / Common stock issuance	0.2				0.2						0.2
Exchangeable share conversions (in shares)								4,305	(4,305)
Exchangeable share conversions				$ 0.0
Currency translation adjustment	(119.8)				(119.8)										(119.8)
Net income (loss)	123.2				123.5								123.5			(0.3)
Other	0.8				0.8						0.8
Ending balance (in shares) at Sep. 30, 2022							581
Ending balance at Sep. 30, 2022	3,616.0				3,617.1		$ 19.4	$ 1.7	$ 0.0	(538.5)	4,201.9		133.7		(201.1)	(1.1)
Ending balance (in shares) at Sep. 30, 2022								155,448,209	620,353
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				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				0.0		$ (19.4)				19.4
Exchangeable share issuance / Common stock issuance (in shares)								4,055	2,854
Exchangeable share issuance / Common stock issuance	0.1			$ 0.0	0.1						0.1
Exchangeable share conversions (in shares)								62,485	(62,485)
Exchangeable share conversions				$ 0.0
Currency translation adjustment	(0.1)				(0.1)										(0.1)
Net income (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 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)
Ending balance (in shares) at Sep. 30, 2023			151,153,819	560,388				151,153,819	560,388
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				0.0		$ (11.8)				11.8
Currency translation adjustment	(44.7)				(44.7)										(44.7)
Net income (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 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)
Ending balance (in shares) at Sep. 30, 2023			151,153,819	560,388				151,153,819	560,388