Fair Value (Fair Value of Financial Instruments) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held-for-sale, net	$ 37	$ 2,003
Total finance receivables and loans, net	106,973	98,971
Nonmarketable equity securities	313	271
Deposit liabilities	64,041	58,222
Short-term borrowings	5,378	7,062
Long-term debt	67,461	66,558
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held-for-sale, net	0	0
Total finance receivables and loans, net	0	0
Nonmarketable equity securities	0	0
Deposit liabilities	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held-for-sale, net	0	485
Total finance receivables and loans, net	0	0
Nonmarketable equity securities	287	246
Deposit liabilities	0	0
Short-term borrowings	0	0
Long-term debt	21,384	25,224
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held-for-sale, net	37	1,554
Total finance receivables and loans, net	107,846	99,430
Nonmarketable equity securities	43	33
Deposit liabilities	64,728	58,777
Short-term borrowings	5,378	7,063
Long-term debt	47,762	44,084
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held-for-sale, net	37	2,003
Total finance receivables and loans, net	106,973	98,971
Nonmarketable equity securities	313	271
Deposit liabilities	64,041	58,222
Short-term borrowings	5,378	7,062
Long-term debt	67,461	66,558
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held-for-sale, net	37	2,039
Total finance receivables and loans, net	107,846	99,430
Nonmarketable equity securities	330	279
Deposit liabilities	64,728	58,777
Short-term borrowings	5,378	7,063
Long-term debt	$ 69,146	$ 69,308

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

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Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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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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