Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Valuation Allowance [Line Items]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

			Successor				Predecessor
					Period From		Period From
					12/14/2019		1/1/2019
	Year Ended		Year Ended		through		through
(Dollars in millions)	12/31/2021		12/31/2020		12/31/2019		12/13/2019
Total Current Provision	$	(96)	$	(90)	$	(9)	$	(110)
Total Deferred (Provision) Benefit	10		5		—		(25)
Provision for Income Taxes	$	(86)	$	(85)	$	(9)	$	(135)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Successor						Predecessor
					Period From		Period From
					12/14/2019		1/1/2019
	Year Ended		Year Ended		through		through
(Dollars in millions)	12/31/2021		12/31/2020		12/31/2019		12/13/2019
Irish or Swiss Income Tax at a rate of 25.0% and 7.83%, respectively	$	86	$	454	$	2	$	(299)
Tax on Operating Earnings/Losses Subject to Rates Different than the Irish or Swiss Federal Income Tax Rate	(166)		(182)		(65)		197
Change in Valuation Allowance	29		(330)		56		17
Change in Uncertain Tax Positions	(35)		(27)		(2)		(18)
Estimated Tax on Settlement of Liabilities Subject to Compromise and Fresh Start Accounting	—		—		—		(495)
Change in Valuation Allowance Attributed to Estimated Tax on Settlement of Liabilities Subject to Compromise and Fresh Start Accounting	—		—		—		463
Provision for Income Taxes	$	(86)	$	(85)	$	(9)	$	(135)

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The components of the net deferred tax asset (liability) were as follows: 

	December 31,		December 31,
(Dollars in millions)	2021		2020
Deferred Tax Assets:
Net Operating Losses Carryforwards	$	828	$	881
Unused Recognized Built in Losses	50		39
Accrued Liabilities and Reserves	186		175
Tax Credit Carryforwards	9		11
Employee Benefits	30		30
Property, Plant and Equipment	118		129
Inventory	52		52
U.S. Interest Deferral	13		55
State Deferred	50		84
Other Differences between Financial and Tax Basis	139		92
Valuation Allowance	(1,426)		(1,499)
Total Deferred Tax Assets	49		49
Deferred Tax Liabilities:
Intangible Assets	(35)		(45)
Other Differences between Financial and Tax Basis	(3)		(4)
Total Deferred Tax Liabilities	(38)		(49)
Net Deferred Tax Asset (Liability)	$	11	$	—

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

A tabular reconciliation of the total amounts of uncertain tax positions at the beginning and end of the period is as follows:

	Successor						Predecessor
					Period From		Period From
					12/14/2019		1/1/2019
	Year Ended		Year Ended		through		through
(Dollars in millions)	12/31/2021		12/31/2020		12/31/2019		12/13/2019
Balance at Beginning of Year	$	222	$	214	$	213	$	195
Additions as a Result of Tax Positions Taken During a Prior Period	23		9		—		34
Reductions as a Result of Tax Positions Taken During a Prior Period	(8)		(4)		—		(1)
Additions as a Result of Tax Positions Taken During the Current Period	12		21		2		17
Reductions Relating to Settlements with Taxing Authorities	(5)		(2)		(1)		(20)
Reductions as a Result of a Lapse of the Applicable Statute of Limitations	(2)		(7)		—		(5)
Foreign Exchange Effects	(7)		(9)		—		(7)
Balance at End of Year	$	235	$	222	$	214	$	213

Summary of Income Tax Contingencies [Table Text Block]

We are subject to income tax in many of the approximately 75 countries where we operate. As of December 31, 2021, the following table summarizes the tax years that remain subject to examination for the major jurisdictions in which we operate: 

Tax Jurisdiction	Tax Years under Examination
Canada	2013 - 2021
Mexico	2010 - 2021
Russia	2018 - 2021
Switzerland	2013 - 2021
United States (Federal)	2018 - 2021