Presentation - Reconciliations between Consolidated and Sector Deferred Taxes (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Sector balance sheet presentation of deferred income tax assets [Abstract]
Deferred income tax assets	$ 12,939us-gaap_DeferredTaxAssetsNet	$ 13,639us-gaap_DeferredTaxAssetsNet
Sector balance sheet presentation of deferred income tax liabilities [Abstract]
Deferred income tax liabilities	525us-gaap_DeferredIncomeTaxLiabilities	570us-gaap_DeferredIncomeTaxLiabilities
Automotive [Member]
Sector balance sheet presentation of deferred income tax assets [Abstract]
Automotive sector current deferred income tax assets	2,167	2,039
Automotive sector non-current deferred income tax assets	12,845	13,331
Sector balance sheet presentation of deferred income tax liabilities [Abstract]
Automotive sector current deferred income tax liabilities	285	270
Automotive sector non-current deferred income tax liabilities	298	367
Financial Services [Member]
Sector balance sheet presentation of deferred income tax liabilities [Abstract]
Deferred income tax liabilities	2,185	1,849
Financial Services [Member] \| Other assets [Member]
Sector balance sheet presentation of deferred income tax assets [Abstract]
Deferred income tax assets	170	185
Intersector [Member]
Sector balance sheet presentation of deferred income tax assets [Abstract]
Deferred income tax assets	15,182	15,555
Sector balance sheet presentation of deferred income tax liabilities [Abstract]
Deferred income tax liabilities	2,768	2,486
Intersector Eliminations [Member]
Sector balance sheet presentation of deferred income tax assets [Abstract]
Deferred income tax assets	(2,243)	(1,916)
Sector balance sheet presentation of deferred income tax liabilities [Abstract]
Deferred income tax liabilities	$ (2,243)	$ (1,916)

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Amount of deferred tax liability attributable to taxable temporary differences.

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Deferred Tax Liability

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-Name Accounting Standards Codification

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-Number 210

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed within one year or operating cycle, if longer.

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