Schedule II - Valuation and Qualifying Accounts (Notes)

12 Months Ended

Dec. 31, 2018

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

Schedule II—Valuation and Qualifying Accounts

(Dollars in millions)

	Successor						Predecessor
	For the Year Ended December 31, 2018			For the Period September 1 through December 31, 2017			For the Period January 1 through August 31, 2017			For the Year Ended December 31, 2016
Accounts Receivable—Allowance for Doubtful Receivables
Balance at beginning of period	$	10		$	—		$	287		$	225
Additions charged to expenses	91			10			51			119
Deductions from reserves1	(16		)	—			(33		)	(57		)
Balance at end of period	$	85		$	10		$	305		$	287
Inventory—Obsolescence Reserve
Balance at beginning of period	$	55		$	—		$	214		$	237
Additions charged to expenses	406			89			241			275
Deductions from reserves2	(283		)	(34		)	(181		)	(298		)
Balance at end of period	$	178		$	55		$	274		$	214
Deferred Tax Assets—Valuation Allowance3
Balance at beginning of period	$	1,140		$	1,160		$	1,145		$	1,529
Additions charged to expenses	190			34			95			6
Deductions from reserves4	(243		)	(54		)	(20		)	(390		)
Balance at end of period	$	1,087		$	1,140		$	1,220		$	1,145

^1.  Deductions include write-offs, recoveries and currency translation adjustments.

^2.  Deductions include disposals and currency translation adjustments.

^3.  The company has corrected its valuation allowance (with a corresponding reduction in tax loss and credit carryforwards) in the amount of $238 million, $163 million, and $163 million for the period September 1 through December 31, 2017, the period January 1 through August 31, 2017, and the year ended December 31, 2016, respectively, as a result of a change in the Delaware state apportionment methodology.

^4.  Deductions include currency translation adjustments.