Finance Receivables And Loans, Net (Allowance For Credit Losses On Financing Receivables) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	$ (329)	$ (161)
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning balance	1,503	1,873
Charge-offs	(776)	(880)
Recoveries	302	327
Allowance for Loan and Lease Losses, Provision for Loss, Net	(474)	(553)
Provision for Other Losses	(188)	22
Allowance for loan losses, Ending Balance	1,170	1,503
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses, Individually evaluated for impairment	228	240
Allowance for loan losses, Collectively evaluated for impairment	939	1,253
Allowance for loan losses, Loans acquired with deteriorated credit quality	3	10
Finance receivables and loans, net	99,055	113,920
Financing Receivable, Individually Evaluated for Impairment	2,671	1,139
Financing receivable, Collectively evaluated for impairment	96,354	112,693
Financing receivable, Loans acquired with deteriorated credit quality	30	88
Consumer Loans Auto Financing Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	(257)	(102)
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning balance	766	970
Charge-offs	(616)	(580)
Recoveries	247	259
Allowance for Loan and Lease Losses, Provision for Loss, Net	(369)	(321)
Provision for Other Losses	(79)	15
Allowance for loan losses, Ending Balance	575	766
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses, Individually evaluated for impairment	16	7
Allowance for loan losses, Collectively evaluated for impairment	556	749
Allowance for loan losses, Loans acquired with deteriorated credit quality	3	10
Finance receivables and loans, net	53,715	63,459
Financing Receivable, Individually Evaluated for Impairment	260	69
Financing receivable, Collectively evaluated for impairment	53,425	63,302
Financing receivable, Loans acquired with deteriorated credit quality	30	88
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	(86)	(126)
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning balance	516	580
Charge-offs	(149)	(210)
Recoveries	11	17
Allowance for Loan and Lease Losses, Provision for Loss, Net	(138)	(193)
Provision for Other Losses	(12)	3
Allowance for loan losses, Ending Balance	452	516
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses, Individually evaluated for impairment	186	172
Allowance for loan losses, Collectively evaluated for impairment	266	344
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0
Finance receivables and loans, net	9,821	9,993
Financing Receivable, Individually Evaluated for Impairment	873	606
Financing receivable, Collectively evaluated for impairment	8,948	9,387
Financing receivable, Loans acquired with deteriorated credit quality	0	0
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	14	67
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning balance	221	323
Charge-offs	(11)	(90)
Recoveries	44	51
Allowance for Loan and Lease Losses, Provision for Loss, Net	33	(39)
Provision for Other Losses	(97)	4
Allowance for loan losses, Ending Balance	143	221
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Allowance for loan losses, Individually evaluated for impairment	26	61
Allowance for loan losses, Collectively evaluated for impairment	117	160
Allowance for loan losses, Loans acquired with deteriorated credit quality	0	0
Finance receivables and loans, net	35,519	40,468
Financing Receivable, Individually Evaluated for Impairment	1,538	464
Financing receivable, Collectively evaluated for impairment	33,981	40,004
Financing receivable, Loans acquired with deteriorated credit quality	0	0
Domestic [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	(595)	(667)
Recoveries	193	227
Domestic [Member] \| Consumer Loans Auto Financing Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	(438)	(435)
Recoveries	171	186
Domestic [Member] \| Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	(149)	(205)
Recoveries	11	16
Domestic [Member] \| Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	(8)	(27)
Recoveries	11	25
Foreign [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	(181)	(213)
Recoveries	109	100
Foreign [Member] \| Consumer Loans Auto Financing Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	(178)	(145)
Recoveries	76	73
Foreign [Member] \| Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	0	(5)
Recoveries	0	1
Foreign [Member] \| Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs	(3)	(63)
Recoveries	33	26
Segment, Discontinued Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	$ (65)	$ (58)

Reflects the amount charged against earnings during the period as bad debt expense, net of recoveries of previously expensed credit losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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The balance of financing receivables that were acquired with deteriorated credit quality.

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A valuation allowance for financing receivables that are expected to be uncollectible.

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of direct write-downs of financing receivables charged against the allowance.

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The balance of financing receivables that were collectively evaluated for impairment.

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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The sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value.

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-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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