Schedule of computation of Weighted Average Basic and Diluted Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$ 13.0	$ (19.6)
Loss from discontinued operations, net of income taxes	(0.7)	(42.7)
Gain on sale and deconsolidation of discontinued business, net of income taxes	16.7
Net income (loss)	$ 29.0	$ (62.3)
Weighted average number of diluted shares outstanding during the period - basic and diluted (in thousands)	25,400	25,200
Continuing operations	$ 511.81	$ (782.16)
Discontinued operations	629.92	(1,690.61)
Net income	$ 1,141.73	$ (2,472.77)
Anti-dilutive shares excluded from calculation