Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Noncontrolling Interest [Member]	Total
Balance, value 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 loss			(0.8)
Balance, value at Mar. 31, 2022		1,073.0	(1,036.8)	$ (24.9)		11.3
Balance, shares at Mar. 31, 2022	28,097			2,927
Balance, value at Dec. 31, 2022		1,073.0	(1,039.0)	$ (24.9)		9.1
Balance, shares at Dec. 31, 2022	28,097			2,927
Net loss	$ (1.1)
Balance, value at Mar. 31, 2023		$ 1,073.0	$ (1,040.1)	$ (24.9)		$ 8.0
Balance, shares at Mar. 31, 2023	28,097			2,927