Consolidated Statements of Shareholders' Equity (Deficit) - USD ($) $ in Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2020		$ 1,059.6	$ (1,065.0)	$ (24.9)	$ 22.7	$ (7.6)
Balance, shares at Dec. 31, 2020	28,097			2,927
Net income (loss)			29.0		(0.7)	28.3
Deconsolidation of subsidiary					(22.0)	(22.0)
Sale of warrants		0.2				0.2
Extinguishment of Stock Purchase Agreement Notes Payable, related party		10.0				10.0
Extinguishment of related party debt		3.2				3.2
Balance at Dec. 31, 2021		1,073.0	(1,036.0)	$ (24.9)		12.1
Balance, shares at Dec. 31, 2021	28,097			2,927
Net income (loss)			(3.0)			(3.0)
Balance at Dec. 31, 2022		$ 1,073.0	$ (1,039.0)	$ (24.9)		$ 9.1
Balance, shares at Dec. 31, 2022	28,097			2,927