Finance Receivables Activity in post-acquisition consumer finance receivables portfolio (Details) (Consumer Finance Receivables, USD $) In Millions, unless otherwise specified							3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 International Segment [Member]	Dec. 31, 2013 International Segment [Member]	Sep. 30, 2014 North America Segment [Member]	Dec. 31, 2013 North America Segment [Member]	Sep. 30, 2014 Post-Acquisition Portfolio	Sep. 30, 2013 Post-Acquisition Portfolio	Sep. 30, 2014 Post-Acquisition Portfolio	Sep. 30, 2013 Post-Acquisition Portfolio	Sep. 30, 2014 Post-Acquisition Portfolio International Segment [Member]	Sep. 30, 2013 Post-Acquisition Portfolio International Segment [Member]	Sep. 30, 2014 Post-Acquisition Portfolio International Segment [Member]	Sep. 30, 2013 Post-Acquisition Portfolio International Segment [Member]	Sep. 30, 2014 Post-Acquisition Portfolio North America Segment [Member]	Sep. 30, 2013 Post-Acquisition Portfolio North America Segment [Member]	Sep. 30, 2014 Post-Acquisition Portfolio North America Segment [Member]	Sep. 30, 2013 Post-Acquisition Portfolio North America Segment [Member]
Accounts Notes And Loans Receivable Rollforward [Roll Forward]
Financing Receivable, Gross	$ 25,216	$ 23,130	$ 12,601	$ 11,742	$ 12,615	$ 11,388			$ 21,956	$ 8,831			$ 11,394	$ 0			$ 10,562	$ 8,831
Business Combination, Acquired Receivables, Fair Value								6,378		6,378		6,378		6,378
Payments to Acquire Loans Receivable									11,129	6,330			6,255	2,350			4,874	3,980
Financing Receivable, Allowance for Credit Losses, Write-downs							(230)	(171)	(645)	(419)	(36)	(18)	(102)	(18)	(194)	(153)	(543)	(401)
Proceeds from Collection of Finance Receivables									(7,164)	(3,676)			(4,487)	(1,579)			(2,677)	(2,097)
Foreign Currency Translation - Finance Receivables									(658)	221			(656)	221			(2)	0
Financing Receivable, Gross	$ 25,216	$ 23,130	$ 12,601	$ 11,742	$ 12,615	$ 11,388	$ 24,618	$ 17,665	$ 24,618	$ 17,665	$ 12,404	$ 7,352	$ 12,404	$ 7,352	$ 12,214	$ 10,313	$ 12,214	$ 10,313

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Finance Receivables, Translation Adjustment

+ References

No definition available.

+ Details

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- Definition

For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the fair value of the receivables acquired, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

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- Definition

Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10(3))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 10

-Subparagraph 3

-Article 9

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- Definition

The cash outflow for the purchase of loan receivable arising from the financing of goods and services.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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- Definition

The cash inflow associated with the collection of receivables arising from the financing of goods and services.

+ References

No definition available.

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