Pension and Postretirement Benefit Plans - Components of Net Periodic Benefit Costs (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	$ 20	$ 19
Expected return on plan assets	(27)	(29)
Service cost
Amortization of net actuarial loss	4	5
Net periodic (benefit) cost	(3)	(5)
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	3	3
Expected return on plan assets
Service cost	1	1
Amortization of net actuarial loss	1	1
Net periodic (benefit) cost	5	5
Foreign Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	1	1
Expected return on plan assets
Service cost
Amortization of net actuarial loss
Net periodic (benefit) cost	$ 1	$ 1