Pension and Postretirement Expense Level 4 (Details) - Components of net pension and postretirement expense benefit - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other Postretirement Benefits Plan [Member] | UNITED STATES
Pension Benefits and Non-Pension Postretirement Benefits Disclosures Table Text Block [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost on projected benefit obligation	0	0	0	0
Expected return on assets	0	0	0	0
Amortization of Prior Service benefit		(1)		(1)
Net expense (benefit)	0	(1)	0	(1)
Other Postretirement Benefits Plan [Member] | Foreign Plan [Member]
Pension Benefits and Non-Pension Postretirement Benefits Disclosures Table Text Block [Line Items]
Service cost	0	0	0	0
Interest cost on projected benefit obligation	1	1	1	1
Expected return on assets	0	0	0	0
Net expense (benefit)	1	1	1	1
Pension Plan [Member] | UNITED STATES
Pension Benefits and Non-Pension Postretirement Benefits Disclosures Table Text Block [Line Items]
Service cost	0	1	1	2
Interest cost on projected benefit obligation	2	2	4	4
Expected return on assets	(3)	(4)	(7)	(7)
Net expense (benefit)	(1)	(1)	(2)	(1)
Pension Plan [Member] | Foreign Plan [Member]
Pension Benefits and Non-Pension Postretirement Benefits Disclosures Table Text Block [Line Items]
Service cost	4	3	8	7
Interest cost on projected benefit obligation	2	3	4	5
Expected return on assets	(3)	(2)	(5)	(5)
Net expense (benefit)	$ 3	$ 4	$ 7	$ 7