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Fair Value (Instruments Not Measured at Fair Value) (Details) (USD $) In Millions, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012
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Carrying Amount |  |
Financial Instruments Not Measured At Fair Value In the Condensed Consolidated Balance Sheets [Abstract] |  |
Long-term receivables | $ 295 | $ 304
Non-recourse debt | 15,923 | 15,383
Recourse debt | 5,961 | 5,962
Fair Value |  |
Financial Instruments Not Measured At Fair Value In the Condensed Consolidated Balance Sheets [Abstract] |  |
Long-term receivables | 167 | 188
Non-recourse debt | 16,416 | 16,110
Recourse debt | 6,724 | 6,628
Value Added Tax Receivable, Noncurrent | 53 | 55
Fair Value | Level 1 |  |
Financial Instruments Not Measured At Fair Value In the Condensed Consolidated Balance Sheets [Abstract] |  |
Long-term receivables | 0 | 0
Non-recourse debt | 0 | 0
Recourse debt | 0 | 0
Fair Value | Level 2 |  |
Financial Instruments Not Measured At Fair Value In the Condensed Consolidated Balance Sheets [Abstract] |  |
Long-term receivables | 0 | 0
Non-recourse debt | 14,212 | 13,811
Recourse debt | 6,724 | 6,628
Fair Value | Level 3 |  |
Financial Instruments Not Measured At Fair Value In the Condensed Consolidated Balance Sheets [Abstract] |  |
Long-term receivables | 167 | 188
Non-recourse debt | 2,204 | 2,299
Recourse debt | $ 0 | $ 0

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- Details
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- Definition Non-recourse debt is secured by the capital stock, physical assets, contracts and cash flows of the related subsidiary. The risk is limited to the respective subsidiary business and is without recourse to the Parent Company and other subsidiaries. + References No definition available. + Details
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- Definition Recourse debt is direct borrowings by the Parent Company that is structurally subordinate to the affiliates non-recourse debt. + References No definition available. + Details
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- Definition Amount due from customers or clients, more than one year from the balance sheet date, for goods or services that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 + Details
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- Definition Carrying amount due after one year of the balance sheet date (or one operating cycle), if longer of value added taxes due either from customers arising from sales on credit terms, or as previously overpaid to tax authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 8 -Article 5 + Details
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