Consolidated Statement of Equity (Deficit) (Unaudited) - USD ($) $ in Millions	Total	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Redeemable Convertible Preferred Stock [Member]
Balance at Dec. 31, 2023	$ 931	$ 1,156	$ (495)	$ 281	$ (11)	$ 210
Net loss earnings	32		32
Currency translation adjustments	(6)			(6)
Pension and other postretirement liability adjustments	(6)			(6)
Preferred stock cash dividends	(1)	(1)
Preferred stock in-kind dividends	(1)	(1)				1
Preferred stock deemed dividends	(1)	(1)				1
Stock-based compensation	3	3
Balance at Mar. 31, 2024	951	1,156	(463)	269	(11)	212
Balance at Dec. 31, 2024	641	1,150	(393)	(104)	(12)	218
Net loss earnings	(7)		(7)
Currency translation adjustments	6			6
Pension and other postretirement liability adjustments	(75)			(75)
Preferred stock cash dividends	(1)	(1)
Preferred stock in-kind dividends	(2)	(2)				2
Treasury stock purchases	(1)				(1)
Stock-based compensation	2	2
Balance at Mar. 31, 2025	$ 563	$ 1,149	$ (400)	$ (173)	$ (13)	$ 220