Pension and Postretirement Benefit Plans - Components of Net Periodic Benefit Cost (Credit) and Other Amounts Recognized in OCI (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Settlement loss	$ 42		$ 42
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost		$ 66	80	$ 74
Expected return on plan assets		$ (108)	$ (111)	$ (117)
Service cost
Amortization of net actuarial (gain) loss		$ 18	$ 16	$ 20
Settlement loss			36
Other			(5)
Net periodic benefit cost (credit)		$ (24)	16	$ (23)
Recognized in OCI:
Amount due to net actuarial (gains) losses		40	93	(88)
Reclassification adjustment for net actuarial gains (losses) in net periodic benefit cost		$ (18)	(52)	$ (20)
Other			(2)
Total recognized in OCI		$ 22	39	$ (108)
Net recognized in benefit cost (credit) and OCI		(2)	55	(131)
Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost		8	11	11
Expected return on plan assets		(2)	(1)	(1)
Service cost		5	6	6
Amortization of net actuarial (gain) loss		$ 7	3	$ 4
Settlement loss			6
Other			(1)
Net periodic benefit cost (credit)		$ 18	24	$ 20
Recognized in OCI:
Amount due to net actuarial (gains) losses		(6)	53	(1)
Reclassification adjustment for net actuarial gains (losses) in net periodic benefit cost		$ (7)	(9)	(4)
Venezuelan bolivar devaluation			(4)	$ (2)
Other		$ (11)	(1)
Total recognized in OCI		(24)	39	$ (7)
Net recognized in benefit cost (credit) and OCI		(6)	63	13
Foreign Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost		3	5	5
Service cost		$ 1	1	1
Amortization of net actuarial (gain) loss			(1)
Net periodic benefit cost (credit)		$ 4	5	6
Recognized in OCI:
Amount due to net actuarial (gains) losses		$ (6)	10	(12)
Reclassification adjustment for net actuarial gains (losses) in net periodic benefit cost			1
Total recognized in OCI		$ (6)	11	(12)
Net recognized in benefit cost (credit) and OCI		$ (2)	$ 16	$ (6)