Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Line Items]
Income tax (benefit) expense		$ (77)	$ 232	$ (1,834)
Net discrete tax adjustments		458	18	1,980
Income tax benefit resulting from election change		163
Tax benefit from the conclusion of non-U.S. tax claims			9
Loss on deconsolidation of Venezuelan subsidiary	$ 646	0	646	0
Tax benefit from research and development tax credit			10
Provision for potential U.S. Federal taxation of certain undistributed earnings of foreign subsidiaries		0	0	131
Deferred tax impact of enacted law changes		(2)	(2)	33
Foreign tax assets for net operating loss, capital loss and tax credit carryforwards		507
Valuation allowance	621	326	621
Federal tax assets for net operating loss and tax credit carryforwards		907
State tax assets for net operating loss and tax credit carryforwards		89
Foreign tax credits subject to expiration		849
Tax credits from research and development		58
Deferred tax assets, unrealized stock option deductions		56
Unrecognized tax benefits	$ 54	63	54	81	$ 88
Favorable tax expense impact of unrecognized tax benefits, if recognized		47
Accrued interest		4
Unrecognized tax benefits requiring the use of cash if not favorably settled		12
Undistributed foreign subsidiaries earnings		1,800
Income tax cash payments, net		153	113	127
Special Enterprise Zone Tax Credits
Income Taxes [Line Items]
Foreign tax assets for net operating loss, capital loss and tax credit carryforwards		11
Foreign Tax Authority
Income Taxes [Line Items]
Net establishment (release) of valuation allowances		(354)	4	51
Valuation allowance		187
Foreign Tax Authority | Deferred Tax Assets of Certain Subsidiaries in England, France, Luxembourg and New Zealand
Income Taxes [Line Items]
Net establishment (release) of valuation allowances		(331)
Foreign Tax Authority | Deferred Tax Assets of Venezuelan and Brazilian Subsidiaries
Income Taxes [Line Items]
Net establishment (release) of valuation allowances				37
Foreign Tax Authority | Deferred Tax Assets of a Luxembourg Subsidiary
Income Taxes [Line Items]
Net establishment (release) of valuation allowances				9
Domestic Tax Authority
Income Taxes [Line Items]
Net establishment (release) of valuation allowances		39	(8)	(2,318)
Tax benefit from loss on deconsolidation of subsidiary			$ 69
Valuation allowance		139
Domestic Tax Authority | Deferred Tax Assets From Receivables of Deconsolidated Venezuelan Operations
Income Taxes [Line Items]
Net establishment (release) of valuation allowances		39
Domestic Tax Authority | Deferred Tax Assets Related to Brazil
Income Taxes [Line Items]
Net establishment (release) of valuation allowances		$ (7)
Domestic Tax Authority | Deferred Tax Assets with Previous Allowances
Income Taxes [Line Items]
Net establishment (release) of valuation allowances				(2,179)
Chile
Income Taxes [Line Items]
Deferred tax impact of enacted law changes				$ 11