Pension and Postretirement Expense Level 4 (Details) - Components of Net Pension and Non-pension postretirement Expense - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
United States Pension Plans of US Entity, Defined Benefit [Member]
Pension Benefits and Non-Pension Postretirement Benefits Disclosures Table Text Block [Line Items]
Service cost	$ 3	$ 3	$ 3
Interest cost	8	10	11
Expected return on assets	(14)	(15)	(17)
Amortization of prior service cost (benefit)	1
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(1)	0	0
Unrealized actuarial loss (gain)	1	0	(29)
Net expense (benefit)	(1)	(2)	26
Foreign Pension Plans, Defined Benefit [Member]
Pension Benefits and Non-Pension Postretirement Benefits Disclosures Table Text Block [Line Items]
Service cost	14	16	14
Interest cost	10	12	17
Expected return on assets	(10)	(13)	(15)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(1)	0	0
Unrealized actuarial loss (gain)	(35)	16	(80)
Net expense (benefit)	48	(1)	96
United States Postretirement Benefit Plans of US Entity, Defined Benefit [Member]
Pension Benefits and Non-Pension Postretirement Benefits Disclosures Table Text Block [Line Items]
Service cost	0	0	0
Interest cost	0	0	1
Amortization of prior service cost (benefit)	(1)	0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	1
Unrealized actuarial loss (gain)	0	0	4
Net expense (benefit)	(1)	0	(3)
Foreign Postretirement Benefit Plans, Defined Benefit [Member]
Pension Benefits and Non-Pension Postretirement Benefits Disclosures Table Text Block [Line Items]
Service cost	0	0	0
Interest cost	1	1	1
Amortization of prior service cost (benefit)	0	0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0
Unrealized actuarial loss (gain)	1	1	(2)
Net expense (benefit)	$ 0	$ 0	$ 3