Investments in and Advances to Unconsolidated Affiliates (Details) $ / shares in Units, $ in Millions			1 Months Ended	3 Months Ended			12 Months Ended
	Oct. 01, 2021 USD ($)	Feb. 20, 2020 $ / shares shares	Feb. 29, 2020 USD ($) option $ / shares	Mar. 31, 2022 USD ($) $ / shares shares	Sep. 30, 2021 $ / shares	Mar. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Aug. 01, 2021
Schedule of Equity Method Investments [Line Items]
Common stock offerings ( in shares) | shares				194,200		151,200
Preferred stock, par value (in dollars per share) | $ / shares						$ 0.01	$ 0.01
Return on investment from unconsolidated affiliates				$ 8.0		$ 5.5
Series D Preferred Stock
Schedule of Equity Method Investments [Line Items]
Common stock offerings ( in shares) | shares		883		0			86
Preferred stock, par value (in dollars per share) | $ / shares		$ 0.01		$ 0.01			$ 0.01
Preferred stock, conversion ratio		0.001
Preferred stock, conversion period		4 years
Convertible preferred stock, shares issued upon conversion (in shares) | shares				51
Common Stock
Schedule of Equity Method Investments [Line Items]
Preferred stock, conversion ratio		1
Barstool Sports, Inc
Schedule of Equity Method Investments [Line Items]
Ownership interest				36.00%
Investment acquired, percent			36.00%
Investment acquired, percent, delayed basis			1.00%		1.00%
Common stock, par value (in dollars per share) | $ / shares			$ 0.0001		$ 0.0001
Investment purchase price	$ 325.0		$ 161.2
Investment purchase price, cash			135.0
Investment purchase price, equity			$ 23.1
Investment acquired, period after which ownership will increase			3 years
Investment acquired, ownership percentage following additional investment	50.00%		50.00%
Investment acquired, expected additional investment	$ 62.0		$ 62.0
Investment acquired, valuation of acquiree total common stock outstanding at time of acquisition	$ 450.0		$ 450.0
Investment acquired, period after which remaining shares of investment are callable			3 years
Investment acquired, fair market value at time of exercise, cap			$ 650.0
Investment acquired, multiplier of revenue to calculate floor at time of exercise	2.25		2.25
Equity method investment, ownership percentage					0.30%	0.30%	0.60%
Commercial agreement term			10 years
Commercial agreement number of renewals | option			3
Commercial agreement renewal term			10 years
Commercial agreement term with exercise of renewals			40 years
Customer list intangible asset				$ 0.6			$ 0.8
Prepaid advertising				15.1			15.4
Prepaid advertising, long-term				13.9			14.2
Investment balance				$ 164.1			162.5
Kansas Entertainment
Schedule of Equity Method Investments [Line Items]
Ownership interest				50.00%
Investment balance				$ 83.4			$ 83.8
Return on investment from unconsolidated affiliates				$ 8.0		$ 5.5
Freehold Raceway
Schedule of Equity Method Investments [Line Items]
Ownership interest				50.00%
MAXXAM
Schedule of Equity Method Investments [Line Items]
Ownership interest				50.00%				50.00%