Consolidated Statement of Equity (Deficit) - USD ($) $ in Millions		Total	Cumulative Effect of Adoption of New Lease Accounting Guidance [Member]	Series A [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Series A [Member]	Accumulated Deficit [Member]	Accumulated Deficit [Member] Cumulative Effect of Adoption of New Lease Accounting Guidance [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Redeemable Convertible Preferred Stock [Member]		Redeemable Convertible Preferred Stock [Member] Series A [Member]	Series B Redeemable Convertible Preferred Stock	Series C Redeemable Convertible Preferred Stock
Equity (deficit) at Dec. 31, 2018		$ (3)	$ 5		$ 617		$ (200)	$ 5	$ (411)	$ (9)
Equity (deficit) at Dec. 31, 2018	[1]										$ 173
Net earnings (loss)		116					116
Currency translation adjustments		6							6
Pension and other postretirement liability adjustments		(12)							(12)
Series A Preferred Stock cash dividends		(11)			(11)
Preferred stock deemed dividends		(9)			(9)
Redeemable preferred stock deemed dividends	[1]										9
Stock-based compensation		7			7
Equity (deficit) at Dec. 31, 2019		99			604		(79)		(417)	(9)
Equity (deficit) at Dec. 31, 2019	[1]										182
Net earnings (loss)		(541)					(541)
Currency translation adjustments		(16)							(16)
Pension and other postretirement liability adjustments		(13)							(13)
Preferred stock cash and accrued dividends				$ (11)		$ (11)
Series A Preferred Stock cash dividends		(11)
Preferred stock deemed dividends		(9)		$ (9)		$ (9)
Redeemable preferred stock deemed dividends	[1]												$ 9
Conversion of 2019 Convertible Notes		520			520
Stock option exercises		29			29
Stock-based compensation		19			19
Equity (deficit) at Dec. 31, 2020		77			1,152		(620)		(446)	(9)
Equity (deficit) at Dec. 31, 2020		191									191	[1]
Net earnings (loss)		24					24
Currency translation adjustments		6							6
Pension and other postretirement liability adjustments		661							661
Repurchase of Redeemable Convertible Preferred Stock	[1]										(100)
Exchange of Series A Preferred Stock		92			92						(92)	[1]
Expiration of Series A embedded derivative		11			11
Issuance of convertible, redeemable preferred stock														$ 93	$ 97
Issuance of convertible, redeemableSeries B Preferred Stock, net		(95)			(95)
Issuance of common stock		10			10
Preferred stock cash and accrued dividends		(4)			(4)
Series A Preferred Stock cash dividends		(4)
Preferred stock deemed dividends		(3)			(3)
Redeemable preferred stock deemed dividends	[1]										3
Preferred stock in-kind dividends		(4)			(4)
Redeemable preferred stock in-kind dividends	[1]										4
Treasury stock purchases		(1)								(1)
Stock-based compensation		7			7
Equity (deficit) at Dec. 31, 2021		781			$ 1,166		$ (596)		$ 221	$ (10)
Equity (deficit) at Dec. 31, 2021		$ 196									$ 196	[1]

[1] There are 60 million shares of no par value preferred stock authorized, 2 million of which are issued and outstanding.