Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions		4 Months Ended	8 Months Ended	12 Months Ended
		Dec. 31, 2017	Aug. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Predecessor [Member] | Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		$ 305	$ 287	$ 225	$ 235
Additions charges to expenses			51	119	58
Deductions from reserves	[1]		(33)	(57)	(68)
Balance at end of period			305	287	225
Predecessor [Member] | Inventory Valuation Reserve [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		274	214	237	179
Additions charges to expenses			241	275	391
Deductions from reserves	[2]		(181)	(298)	(333)
Balance at end of period			274	214	237
Predecessor [Member] | Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		1,383	1,308	1,529	1,704
Additions charges to expenses			95	74	40
Deductions from reserves			(20)	(295)	(215)
Balance at end of period			1,383	$ 1,308	$ 1,529
Successor [Member] | Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		0
Additions charges to expenses		10
Deductions from reserves	[1]	0
Balance at end of period			0
Successor [Member] | Inventory Valuation Reserve [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		0
Additions charges to expenses		89
Deductions from reserves	[2]	(34)
Balance at end of period		55	0
Successor [Member] | Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		1,323
Additions charges to expenses		84
Deductions from reserves		(29)
Balance at end of period		$ 1,378	$ 1,323

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

[2] Deductions include disposals and currency translation adjustments.