Condensed Consolidated Statements of Equity (Deficit) - USD ($) $ in Millions	Total	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total [Member]	Noncontrolling Interests [Member]
Beginning Balance, Shareowners' Equity (Deficit) at Dec. 31, 2021	$ 1,690.1	$ 1,716.1	$ (27.2)	$ 1.2	$ 1,690.1	$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(22.0)		(22.0)		(22.0)
Other comprehensive income (loss)	1.8			1.8	1.8
Ending Balance, Shareowners' Equity (Deficit) at Mar. 31, 2022	1,669.9	1,716.1	(49.2)	3.0	1,669.9	0.0
Beginning Balance, Shareowners' Equity (Deficit) at Dec. 31, 2022	1,578.3	1,716.1	(158.1)	19.5	1,577.5	0.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(69.9)		(69.9)		(69.9)
Other comprehensive income (loss)	(0.9)			(0.9)	(0.9)
Ending Balance, Shareowners' Equity (Deficit) at Mar. 31, 2023	$ 1,507.5	$ 1,716.1	$ (228.0)	$ 18.6	$ 1,506.7	$ 0.8