Pension and Other Postretirement Benefit Plans (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
U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 0	$ 1	$ 0
Interest cost	44	48	89	96
Expected return on plan assets	49	48	97	96
Amortization
Actuarial loss	12	8	23	16
Prior service credit	(1)	(1)	(2)	(2)
Settlement and curtailment (gain) loss	2	0	4	0
Net periodic benefit cost	9	7	18	14
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	2	3	4
Interest cost	5	5	9	10
Expected return on plan assets	3	3	5	6
Amortization
Actuarial loss	1	1	2	2
Prior service credit	0	0	0	0
Settlement and curtailment (gain) loss	0	0	0	0
Net periodic benefit cost	4	5	9	10
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	2	3	4
Interest cost	5	8	11	17
Expected return on plan assets	0	0	0	0
Amortization
Actuarial loss	0	0	0	0
Prior service credit	(11)	(11)	(23)	(18)
Settlement and curtailment (gain) loss	(49)	0	(49)	0
Net periodic benefit cost	(53)	(1)	(58)	3
Defined Benefit Plan, Curtailments			$ (49)