CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($) $ in Millions	Total	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	Total Penn National Stock- holders’ Equity	Total Penn National Stock- holders’ Equity 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	$ 0.0	$ 1.2	$ (28.4)	$ 1,718.3	$ 161.6	$ 0.6	$ 1,852.7	$ 0.6	$ (0.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)				835,463
Share-based compensation arrangements	10.6					10.6			10.6
Net income (loss)	(608.6)						(608.6)		(608.6)
Barstool Sports Investment (in shares)			883
Barstool Sports Investment	23.1		$ 23.1						23.1
Ending balance (in shares) at Mar. 31, 2020			883	116,793,722
Ending balance at Mar. 31, 2020	1,277.6		$ 23.1	$ 1.2	(28.4)	1,728.9	(446.4)		1,278.4		(0.8)
Beginning balance (in shares) at Dec. 31, 2020			883	155,700,834
Beginning balance at Dec. 31, 2020	2,655.8		$ 23.1	$ 1.6	(28.4)	3,167.2	(507.3)		2,656.2		(0.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation arrangements (in shares)				478,107
Share-based compensation arrangements	$ 4.0					4.0			4.0
Share issuance (in shares)	151,200		43
Share issuance	$ 5.1		$ 5.1						5.1
Convertible debt issuance (in shares)			(151)	151,200
Conversion of Preferred Stock	0.0		$ (4.0)			4.0
Net income (loss)	90.9						91.0		91.0		(0.1)
Ending balance (in shares) at Mar. 31, 2021			775	156,330,141
Ending balance at Mar. 31, 2021	$ 2,755.8		$ 24.2	$ 1.6	$ (28.4)	$ 3,175.2	$ (416.3)		$ 2,756.3		$ (0.5)