CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Total Penn National Stock-holders’ Equity	Total Penn National Stock-holders’ Equity Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Common Stock	Treasury Stock	Addi- tional Paid-In Capital	Retained Earnings (Accum-ulated Deficit)	Retained Earnings (Accum-ulated Deficit) Cumulative Effect, Period of Adoption, Adjustment	Non-Control- ling Interest
Beginning balance (in shares) at Dec. 31, 2019					0	115,958,259
Beginning balance at Dec. 31, 2019	$ 1,851.9	$ 0.6	$ 1,852.7	$ 0.6	$ 0.0	$ 1.2	$ (28.4)	$ 1,718.3	$ 161.6	$ 0.6	$ (0.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Barstool Sports investment (in shares)					883
Barstool Sports investment	23.1		23.1		$ 23.1
Share-based compensation arrangements (in shares)						4,028,992
Share-based compensation arrangements	61.0		61.0					61.0
Share issuance/Common Stock Offering (in shares)						35,266,667
Share issuance/Common Stock Offering	1,288.8		1,288.8			$ 0.4		1,288.4
Convertible debt offering	88.2		88.2					88.2
Net income (loss)	(681.8)		(680.6)						(680.6)		(1.2)
Other	(0.1)		(0.1)					(0.1)
Ending balance (in shares) at Sep. 30, 2020					883	155,253,918
Ending balance at Sep. 30, 2020	2,631.7		2,633.7		$ 23.1	$ 1.6	(28.4)	3,155.8	(518.4)		(2.0)
Beginning balance (in shares) at Jun. 30, 2020					883	137,435,090
Beginning balance at Jun. 30, 2020	1,504.9		1,506.2		$ 23.1	$ 1.4	(28.4)	2,170.4	(660.3)		(1.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)						1,718,828
Share-based compensation arrangements	28.3		28.3					28.3
Share issuance/Common Stock Offering (in shares)						16,100,000
Share issuance/Common Stock Offering	957.6		957.6			$ 0.2		957.4
Net income (loss)	141.2		141.9						141.9		(0.7)
Other	(0.3)		(0.3)					(0.3)
Ending balance (in shares) at Sep. 30, 2020					883	155,253,918
Ending balance at Sep. 30, 2020	2,631.7		2,633.7		$ 23.1	$ 1.6	(28.4)	3,155.8	(518.4)		(2.0)
Beginning balance (in shares) at Dec. 31, 2020					883	155,700,834
Beginning balance at Dec. 31, 2020	2,655.8		2,656.2		$ 23.1	$ 1.6	(28.4)	3,167.2	(507.3)		(0.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)						908,473
Share-based compensation arrangements	$ 21.9		21.9					21.9
Share issuance/Common Stock Offering (in shares)	43,000				86	241,787
Share issuance/Common Stock Offering	$ 27.4		27.4		$ 8.1			19.3
Preferred Stock Conversion (in shares)					(194)	194,200
Preferred Stock Conversion	0.0				$ (5.4)			5.4
Net income (loss)	375.7		375.8						375.8		(0.1)
Other	(9.4)		(9.4)					(9.4)
Ending balance (in shares) at Sep. 30, 2021					775	157,045,294
Ending balance at Sep. 30, 2021	3,071.4		3,071.9		$ 25.8	$ 1.6	(28.4)	3,204.4	(131.5)		(0.5)
Beginning balance (in shares) at Jun. 30, 2021					775	156,786,873
Beginning balance at Jun. 30, 2021	2,957.8		2,958.3		$ 24.2	$ 1.6	(28.4)	3,178.5	(217.6)		(0.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)						17,318
Share-based compensation arrangements	8.5		8.5					8.5
Share issuance/Common Stock Offering (in shares)					43	198,103
Share issuance/Common Stock Offering	18.8		18.8		$ 3.0			15.8
Preferred Stock Conversion (in shares)					(43)	43,000
Preferred Stock Conversion	0.0				$ (1.4)			1.4
Net income (loss)	86.1		86.1						86.1
Other	0.2		0.2					0.2
Ending balance (in shares) at Sep. 30, 2021					775	157,045,294
Ending balance at Sep. 30, 2021	$ 3,071.4		$ 3,071.9		$ 25.8	$ 1.6	$ (28.4)	$ 3,204.4	$ (131.5)		$ (0.5)