Investments in and Advances to Unconsolidated Affiliates - Schedule of Summary Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Summary financial information
Current assets	$ 1,659.0	$ 2,013.4
Current liabilities	1,490.0	1,158.7
Revenues	6,362.9	6,401.7	$ 5,905.0
Operating expenses	7,053.1	5,427.7	4,845.4
Operating income (loss)	(690.2)	974.0	1,059.6
Net income (loss)	(491.4)	221.7	420.5
Net income (loss) attributable to PENN Entertainment, Inc.	(490.0)	222.1	420.8
Kansas Entertainment
Summary financial information
Current assets	24.1	21.1
Long-term assets	144.0	142.4
Current liabilities	21.0	15.0
Revenues	170.8	161.9	149.5
Operating expenses	105.6	99.0	88.7
Operating income (loss)	65.2	62.9	60.8
Net income (loss)	65.2	62.9	60.8
Net income (loss) attributable to PENN Entertainment, Inc.	$ 32.6	$ 31.5	$ 30.4