Other Assets (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Investments
Assets held for sale	$ 50	$ 211
Investments	43,662	48,439
Derivative instruments	1,117	3,557
Deferred borrowing costs	867	940
Advances to suppliers	2,328	1,805
Deferred acquistion costs	29	46
Other	4,551	4,260
Other Assets	47,366	62,186
Investments [Member]
Investments
Real estate	16,163	25,154
Associated companies	17,348	19,119
Assets held for sale	2,571	4,194
Cost method	1,462	1,665
Other investments	930	1,446
Investments	$ 38,474	$ 51,578

All other asset amounts related to advances made to suppliers.

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Total amount of derivatives net of adjustments related to master netting agreements.

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Represents the sum of the carrying value of all the Assets Held-for-Sale at the balance sheet date.

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Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

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Sum of the carrying amounts as of the balance sheet date of all investments.

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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

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The aggregate carrying amounts, as of the balance sheet date, of assets not separately disclosed in the balance sheet.

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Amount of other miscellaneous assets.

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Net amount of other deferred costs capitalized at the end of the reporting period. Does not include deferred finance costs or deferred acquisition costs of insurance companies.

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Other investments not otherwise specified in the taxonomy.

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Amount of real estate investments, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; (7) other real estate investments; (8) real estate joint ventures; and (9) unconsolidated real estate and other joint ventures not separately presented.

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