Income Taxes - Reconciliation of Tax Computed at the U.S. Federal Statutory Rate to Income Tax Expense (Benefit) Table (Detail) - USD ($) $ in Millions	12 Months Ended			24 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015
Income (loss) before income taxes
Domestic	$ (9,155)	$ (3,564)	$ 428
Foreign	(534)	3,618	1,678
Income (Loss) Before Income Taxes	$ (9,689)	$ 54	$ 2,106
U.S. federal statutory tax rate	35.00%	35.00%	35.00%
Tax computed at the U.S. federal statutory rate	$ (3,391)	$ 19	$ 737
Adjustments resulting from
State income taxes (net of federal income tax benefit)	(81)	(11)	23
Tax impact from foreign operations	299	62	204
Effective Income Tax Rate Reconciliation [Line Items]
Net changes in uncertain tax positions	54	1,427	(29)
Deferred tax adjustments	10	15	76
(Income) loss attributable to noncontrolling interests	42	(66)	(48)
Federal manufacturing deduction	0	(27)	0
Other, net	0	(12)	22
Total income tax expense (benefit)	$ (2,877)	$ 1,617	$ 1,165
Effective tax rate	30.00%	2994.00%	55.00%
Judicial Ruling [Member] | Tronox Litigation [Member]
Effective Income Tax Rate Reconciliation [Line Items]
Non-deductible expense	$ 0	$ (36)	$ 36
Total income tax expense (benefit)				$ (576)
Pending Litigation [Member] | Deepwater Horizon [Member]
Effective Income Tax Rate Reconciliation [Line Items]
Non-deductible expense	26	32	0
Algerian Exceptional Profits Tax [Member]
Effective Income Tax Rate Reconciliation [Line Items]
Non-deductible expense	102	193	144
Goodwill [Member]
Effective Income Tax Rate Reconciliation [Line Items]
Non-deductible expense	$ 62	$ 21	$ 0