Pension and Postretirement Expense Level 4 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Pension Benefits - U.S. Plans [Member]
Pension Benefits and Non-Pension Postretirement Benefits Disclosures Table Text Block [Line Items]
Service cost	$ 0	$ 0	$ 1	$ 1
Interest cost on projected benefit obligation	3	3	6	6
Expected return on assets	(4)	(4)	(8)	(8)
Amortization of prior service cost (benefit)	2	0	4	0
Recognized actuarial loss	0	2	0	4
Net expense (benefit)	1	1	3	3
Pension Benefits - Non-U.S. Plans [Member]
Pension Benefits and Non-Pension Postretirement Benefits Disclosures Table Text Block [Line Items]
Service cost	2	2	4	4
Interest cost on projected benefit obligation	5	5	9	9
Expected return on assets	(4)	(3)	(7)	(6)
Amortization of prior service cost (benefit)	0	0	0	0
Recognized actuarial loss	0	0	0	0
Net expense (benefit)	3	4	6	7
Non-Pension Postretirement Benefits - U.S. Plans [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	0	0	0	0
Expected return on assets	0	0	0	0
Amortization of prior service cost (benefit)	(2)	(2)	(4)	(5)
Recognized actuarial loss	0	0	0	0
Net expense (benefit)	(2)	(2)	(4)	(5)
Non-Pension Postretirement Benefits - Non-U.S. Plans [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	0	0	0	0
Expected return on assets	0	0	0	0
Amortization of prior service cost (benefit)	0	0	0	0
Recognized actuarial loss	0	0	0	0
Net expense (benefit)	$ 0	$ 0	$ 0	$ 0