Pension, Other Postretirement Benefits and Savings Plans - Schedule of Benefit Costs and Amounts Recognized in Other Comprehensive (Income) Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Benefits cost:
Curtailments/settlements	$ 137	$ 33
Recognized in other comprehensive (income) loss before tax and minority:
Deconsolidation of Venezuelan subsidiary	248
U.S.
Benefits cost:
Service cost	4	15	$ 45
Interest cost	238	256	243
Expected return on plan assets	(295)	(311)	(335)
Amortization of prior service cost (credit)	0	1	17
Amortization of net losses	106	114	205
Net periodic cost	53	75	175
Curtailments/settlements	137	32	0
Total benefits cost	190	107	175
Recognized in other comprehensive (income) loss before tax and minority:
Prior service (credit) cost from plan amendments	0	(1)	(30)
Increase (decrease) in net actuarial losses	150	292	(374)
Amortization of prior service (cost) credit in net periodic cost	0	(1)	(17)
Amortization of net losses in net periodic cost	(106)	(114)	(205)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements, and divestitures	(386)	(32)	0
Deconsolidation of Venezuelan subsidiary	0	0	0
Total recognized in other comprehensive loss (income) before tax and minority	(342)	144	(626)
Total recognized in total benefits cost and other comprehensive loss (income) before tax and minority	(152)	251	(451)
Non-U.S.
Benefits cost:
Service cost	43	34	39
Interest cost	113	131	131
Expected return on plan assets	(107)	(118)	(111)
Amortization of prior service cost (credit)	1	1	1
Amortization of net losses	32	35	50
Net periodic cost	82	83	110
Curtailments/settlements	2	(13)	4
Total benefits cost	84	70	114
Recognized in other comprehensive (income) loss before tax and minority:
Prior service (credit) cost from plan amendments	0	1	(1)
Increase (decrease) in net actuarial losses	(45)	(78)	(128)
Amortization of prior service (cost) credit in net periodic cost	(1)	(1)	(1)
Amortization of net losses in net periodic cost	(34)	(36)	(53)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements, and divestitures	(5)	(16)	(3)
Deconsolidation of Venezuelan subsidiary	(62)	0	0
Total recognized in other comprehensive loss (income) before tax and minority	(147)	(130)	(186)
Total recognized in total benefits cost and other comprehensive loss (income) before tax and minority	(63)	(60)	(72)
Other Postretirement Benefits
Benefits cost:
Service cost	3	4	6
Interest cost	15	19	19
Expected return on plan assets	0	(1)	(1)
Amortization of prior service cost (credit)	(45)	(45)	(45)
Amortization of net losses	7	8	12
Net periodic cost	(20)	(15)	(9)
Curtailments/settlements	0	0	0
Total benefits cost	(20)	(15)	(9)
Recognized in other comprehensive (income) loss before tax and minority:
Prior service (credit) cost from plan amendments	0	0	0
Increase (decrease) in net actuarial losses	(19)	3	(51)
Amortization of prior service (cost) credit in net periodic cost	45	45	47
Amortization of net losses in net periodic cost	(7)	(8)	(13)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements, and divestitures	4	0	0
Deconsolidation of Venezuelan subsidiary	0	0	0
Total recognized in other comprehensive loss (income) before tax and minority	23	40	(17)
Total recognized in total benefits cost and other comprehensive loss (income) before tax and minority	$ 3	$ 25	$ (26)