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

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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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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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.

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Amount after allowance and deduction of deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts, of loans and leases to borrowers not within the country of domicile of the reporting entity. Excludes loans and leases covered under loss sharing agreements.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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The face amount of loans that will be sold to other entities.

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Amount classified as loans attributable to disposal group held for sale or disposed of. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

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Amount of loan with fixed rate of interest.

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Amount of loan with variable or adjustable rate of interest.

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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.

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Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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Loans and Allowance for Loan Losses (Outstanding Loans and Credit Quality) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Loans Held for Investments
Loans held for investments, gross	$ 69,183	$ 57,268	$ 51,606
Allowance for loan losses	(173)	(149)	(141)	$ (156)
Loans held for investment, net	69,010	57,119
Loans Held for Sale
Loans held for sale, gross	9,199	9,458
Loans held for sale, net	9,199	9,458
Total Loans
Total loans, gross	78,382	66,726
Allowance for loan losses	(173)	(149)
Total loans, net	78,209	66,577
Total loans, net of allowance, made to foreign borrowers	7,455	7,017
Loans held at fair value	11,334	11,962
Loans at fixed interest rate	7,280	6,663
Loans at floating or adjustable interest rate	70,929	59,914
Pass
Loans Held for Investments
Loans held for investments, gross	67,885	55,409
Special Mention
Loans Held for Investments
Loans held for investments, gross	786	1,683
Substandard
Loans Held for Investments
Loans held for investments, gross	491	174
Doubtful
Loans Held for Investments
Loans held for investments, gross	21	2
Corporate
Loans Held for Investments
Loans held for investments, gross	22,519	19,659	18,589
Allowance for loan losses	(139)	(118)	(117)	(137)
Loans Held for Sale
Loans held for sale, gross	8,509	8,200
Total Loans
Total loans, gross	31,028	27,859
Loans held at fair value	6,762	7,093
Corporate \| Pass
Loans Held for Investments
Loans held for investments, gross	21,265	17,847
Corporate \| Special Mention
Loans Held for Investments
Loans held for investments, gross	786	1,683
Corporate \| Substandard
Loans Held for Investments
Loans held for investments, gross	447	127
Corporate \| Doubtful
Loans Held for Investments
Loans held for investments, gross	21	2
Consumer
Loans Held for Investments
Loans held for investments, gross	20,447	16,576	15,389
Allowance for loan losses	(2)	(2)	(2)	(1)
Loans Held for Sale
Loans held for sale, gross	0	0
Total Loans
Total loans, gross	20,447	16,576
Consumer \| Pass
Loans Held for Investments
Loans held for investments, gross	20,447	16,576
Consumer \| Special Mention
Loans Held for Investments
Loans held for investments, gross	0	0
Consumer \| Substandard
Loans Held for Investments
Loans held for investments, gross	0	0
Consumer \| Doubtful
Loans Held for Investments
Loans held for investments, gross	0	0
Residential Real Estate
Loans Held for Investments
Loans held for investments, gross	19,640	15,735	14,198
Allowance for loan losses	(10)	(8)	(7)	(4)
Loans Held for Sale
Loans held for sale, gross	121	114
Total Loans
Total loans, gross	19,761	15,849
Loans held at fair value	1,933	1,682
Residential Real Estate \| Pass
Loans Held for Investments
Loans held for investments, gross	19,596	15,688
Residential Real Estate \| Special Mention
Loans Held for Investments
Loans held for investments, gross	0	0
Residential Real Estate \| Substandard
Loans Held for Investments
Loans held for investments, gross	44	47
Residential Real Estate \| Doubtful
Loans Held for Investments
Loans held for investments, gross	0	0
Wholesale Real Estate
Loans Held for Investments
Loans held for investments, gross	6,577	5,298	3,430
Allowance for loan losses	(22)	(21)	$ (15)	$ (14)
Loans Held for Sale
Loans held for sale, gross	569	1,144
Total Loans
Total loans, gross	7,146	6,442
Loans held at fair value	2,639	3,187
Wholesale Real Estate \| Pass
Loans Held for Investments
Loans held for investments, gross	6,577	5,298
Wholesale Real Estate \| Special Mention
Loans Held for Investments
Loans held for investments, gross	0	0
Wholesale Real Estate \| Substandard
Loans Held for Investments
Loans held for investments, gross	0	0
Wholesale Real Estate \| Doubtful
Loans Held for Investments
Loans held for investments, gross	$ 0	$ 0