Other Assets (Details) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Other Assets
Total	$ 10,129,933,000	$ 8,970,272,000
Total as a percentage of total other assets	100.00%	100.00%
Other Assets Additional (Textuals) [Abstract]
Cross-currency interest rate swaps designated as fair value hedges	3,600,000,000	2,700,000,000
Cumulative mark-to-market adjustment to the hedged debt	(3,900,000,000)	(2,700,000,000)
Other Assets [Member]
Other Assets
Derivatives at fair value	3,143,000,000	2,437,000,000
Derivatives at fair value as a percentage of total other assets	31.00%	27.00%
Accrued interest receivable	2,835,000,000	2,927,000,000
Accrued interest receivable as a percentage of total other assets	28.00%	33.00%
Income tax asset, net current and deferred	1,511,000,000	1,283,000,000
Income tax asset, net current and deferred as a percentage of total other assets	15.00%	14.00%
Accounts receivable - general	1,371,000,000	730,000,000
Accounts receivable - general as a percentage of total other assets	14.00%	8.00%
Benefit and insurance-related investments	464,000,000	462,000,000
Benefit and insurance-related investments as a percentage of total other assets	5.00%	5.00%
Other loans	232,000,000	271,000,000
Other loans as a percentage of total other assets	2.00%	3.00%
Fixed assets, net	225,000,000	291,000,000
Fixed assets, net as a percentage of total other assets	2.00%	4.00%
Purchased paper-related receivables	68,000,000	96,000,000
Purchased paper-related receivables as a percentage of total other assets	1.00%	1.00%
Other	$ 281,000,000	$ 473,000,000
Other as a percentage of total other assets	2.00%	5.00%

Accounts receivable - general.

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Accrued interest receivable.

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Benefit and insurance-related investments.

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Benefit and insurance-related investments.

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Business Segment Purchased Paper Receivable And Real Estate Owned.

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Business Segment Purchased Paper Receivables And Real Estate Owned.

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Cross-currency interest rate swaps designated as fair value hedges.

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Cumulative mark-to-market adjustment to the hedged debt.

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Fair value as of the balance sheet date of the derivatives in a gain position by counterparty exclusive of accrued interest and collateral.

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Derivatives at fair value.

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Fixed assets, net.

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Income tax asset.

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Income tax asset, net of current and deferred - Components include the net current payable/receivable to/from taxing authorities, unrecognized tax benefits with any accrued interest, and the net realizable deferred tax liabilities/assets for the expected future tax consequences of temporary differences between the carrying amounts and tax basis of the Company's assets and liabilities.

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Other.

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Other Assets.

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Other Assets Additional.

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Other loans.

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Other loans as percentage of assets.

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Other.

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For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Carrying amount as of the balance sheet date of assets not otherwise specified in the taxonomy. Also serves as the sum of assets not individually reported in the financial statements, or not separately disclosed in notes.

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Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, and production equipment.

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