Debt And Commitments - Debt Outstanding (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Aug. 30, 2012	Dec. 31, 2011
Debt Outstanding [Abstract]
Total Debt	$ 105,058		$ 99,488
Automotive [Member]
Debt Outstanding [Abstract]
Short-term Debt	1,386		1,033
Debt payable after one year	12,870		12,061
Total Debt	14,256		13,094
Fair value of debt	14,867		13,451
Short-term debt carried at cost which approximates fair value	484		326
Interest accrued on debt	194		205
Automotive [Member] \| Other debt [Member]
Debt Outstanding [Abstract]
Debt payable within one year	311		216
Unamortized discount	(7)		0
Debt payable after one year	1,048		888
Automotive [Member] \| Public Unsecured Debt Securities [Member]
Debt Outstanding [Abstract]
Debt, principal amount	5,420		5,260
Unamortized discount	(100)		(77)
Automotive [Member] \| Convertible Notes [Member]
Debt Outstanding [Abstract]
Debt, principal amount	908		908
Unamortized discount	(142)		(172)
Automotive [Member] \| Short-term Debt [Member]
Debt Outstanding [Abstract]
Average contractual (interest rate)	1.50%		1.60%
Average effective (interest rate)	1.50%		1.60%
Automotive [Member] \| Long-term Debt [Member]
Debt Outstanding [Abstract]
Average contractual (interest rate)	4.60%		4.90%
Average effective (interest rate)	5.10%		5.50%
Automotive [Member] \| Non-Affiliates [Member]
Debt Outstanding [Abstract]
Short-term Debt	484		559
Automotive [Member] \| Unconsolidated Affiliates [Member]
Debt Outstanding [Abstract]
Short-term Debt			18
Financial Services [Member]
Debt Outstanding [Abstract]
Short-term Debt	17,745		16,596
Unamortized discount	(134)		(152)
Fair value adjustments	791		681
Long Term Debt And Capital Lease Obligations Current And Non Current	73,057		69,999
Total Debt	90,802		86,595
Fair value of debt	94,578		88,823
Short-term debt carried at cost which approximates fair value	8,400		7,000
Interest accrued on debt	744		836
Financial Services [Member] \| Other debt [Member]
Debt Outstanding [Abstract]
Short-term Debt	1,655		1,905
Financial Services [Member] \| Asset backed commercial paper [Member]
Debt Outstanding [Abstract]
Short-term Debt	5,752		6,835
Financial Services [Member] \| Other asset backed short term debt [Member]
Debt Outstanding [Abstract]
Short-term Debt	3,762		2,987
Financial Services [Member] \| Floating rate demand notes [Member]
Debt Outstanding [Abstract]
Short-term Debt	4,890		4,713
Financial Services [Member] \| Commercial Paper [Member]
Debt Outstanding [Abstract]
Short-term Debt	1,686		156
Financial Services [Member] \| Unsecured Debt [Member]
Debt Outstanding [Abstract]
Debt payable within one year	5,830		6,144
Debt payable after one year	32,503		26,167
Total Debt	46,564
Financial Services [Member] \| Asset backed-debt [Member]
Debt Outstanding [Abstract]
Debt payable within one year	13,801		16,538
Debt payable after one year	20,266		20,621
Total Debt	43,581
Financial Services [Member] \| Short-term Debt [Member]
Debt Outstanding [Abstract]
Average contractual (interest rate)	1.10%		1.40%
Average effective (interest rate)	1.10%		1.40%
Financial Services [Member] \| Long-term Debt [Member]
Debt Outstanding [Abstract]
Average contractual (interest rate)	3.80%		4.30%
Average effective (interest rate)	4.10%		4.60%
Intersector [Member]
Debt Outstanding [Abstract]
Total Debt	105,058		99,689
Intersector Eliminations [Member]
Debt Outstanding [Abstract]
Total Debt			(201)
DOE ATVM Incentive Program \| Automotive [Member]
Debt Outstanding [Abstract]
Debt payable within one year	591		240
Debt payable after one year	5,014		4,556
Long Term Debt And Capital Lease Obligations Current And Non Current	5,600	5,900
Total Debt	5,605
EIB Credit Facilities [Member] \| Automotive [Member]
Debt Outstanding [Abstract]
Debt payable after one year	$ 729		$ 698

Fair value adjustment as of the balance sheet date related to designated fair value hedges of unsecured debt.

No definition available.

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- Definition

The weighted average of contractual interest rates stated in the contractual debt agreements.

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Long Term Debt And Capital Lease Obligations Current And Non-current

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Amount of short-term debt carried at cost that approximates fair value.

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of debt outstanding by type or by instrument at that time.

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid.

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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.

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Obligation related to long-term debt (excluding convertible debt) and capital leases, the portion which is due in one year or less in the future.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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