Restructuring and Asset Related Charges - Net (2016 Restructuring Program schedule )(Details) - USD ($) $ in Millions		1 Months Ended	2 Months Ended	3 Months Ended	8 Months Ended	9 Months Ended
		Sep. 30, 2017	Aug. 31, 2017	Sep. 30, 2016	Aug. 31, 2017	Sep. 30, 2016	Sep. 01, 2017	Dec. 31, 2016
Successor
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset Related Charges - Net		$ 40
Successor | 2016 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		35					$ 47
Payments for Restructuring		(12)
Successor | Severance and Related Benefit Costs [Member] | 2016 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		25					36
Payments for Restructuring		(11)
Successor | Other Non-Personnel Charges [Member] | 2016 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	[1]	10					$ 11
Payments for Restructuring	[1]	$ (1)
Predecessor
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset Related Charges - Net			$ 11	$ 172	$ 323	$ 162
Predecessor | 2016 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve			47		47			$ 122
Restructuring and Asset Related Charges - Net			10	17		(68)
Payments for Restructuring					(87)
Restructuring reserve, net translation adjustment					2
Restructuring Reserve, Other Adjustments					10
Predecessor | 2016 Restructuring Program [Member] | Restructuring and Asset Related Charges - Net [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset Related Charges - Net				14		(71)
Predecessor | 2016 Restructuring Program [Member] | Sundry Income (Expense) - Net [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset Related Charges - Net				$ 3		$ 3
Predecessor | Severance and Related Benefit Costs [Member] | 2016 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve			36		36			100
Payments for Restructuring					(76)
Restructuring reserve, net translation adjustment					2
Restructuring Reserve, Other Adjustments					10
Predecessor | Other Non-Personnel Charges [Member] | 2016 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	[1]		$ 11		11			$ 22
Payments for Restructuring	[1]				(11)
Restructuring reserve, net translation adjustment	[1]				0
Restructuring Reserve, Other Adjustments	[1]				$ 0

[1] Other non-personnel charges consist of contractual obligation costs.