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Investments, Loans and Long-Term Receivables - Components of Investments, Loans and Long-term Receivables (Detail) (USD $) In Millions, unless otherwise specified | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | ---
Schedule of Investments [Line Items] |  |  |  |
Equity investments | $ 30,985 |  | $ 30,055 |
Loans and advances-related parties | 1,675 | [1] | 2,180 | [1]
Long-term receivables | 559 |  | 922 |
Other investments | 564 |  | 604 |
Long-term Investments and Receivables, Net, Total | $ 33,783 |  | $ 33,761 |
[1] | Certain amounts have been restated to reflect a prior period adjustment. See Note 21-Accumulated Other Comprehensive Income, in the Notes to Consolidated Financial Statements.

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