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Debt (Non-Recourse Debt Carrying Amounts and Terms) (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Debt Instrument [Line Items] |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | $ (441) | $ (323)
Non-Recourse Debt |  | 15,792 | 15,115
Non-recourse Debt Current Maturities |  | (1,303) | (2,172)
Non-recourse debt - noncurrent, balance at variable interest entities |  | 14,489 | 12,943
Derivative, notional amount |  | $ 3,600 |
Interest rate swap, fixed minimum interest rate |  | 1.99% |
Interest rate swap, fixed maximum interest rate |  | 8.25% |
Variable Rate Debt | Bank loans |  |  |
Debt Instrument [Line Items] |  |  |
Weighted Average Interest Rate | [1] | 4.61% |
Variable Rate Debt | Notes and bonds |  |  |
Debt Instrument [Line Items] |  |  |
Weighted Average Interest Rate | [1] | 13.65% |
Variable Rate Debt | Debt to (or guaranteed by) multilateral, export credit agencies or development banks |  |  |
Debt Instrument [Line Items] |  |  |
Weighted Average Interest Rate | [1],[2] | 2.99% |
Variable Rate Debt | Other |  |  |
Debt Instrument [Line Items] |  |  |
Weighted Average Interest Rate | [1] | 14.19% |
Fixed Rate Debt | Bank loans |  |  |
Debt Instrument [Line Items] |  |  |
Weighted Average Interest Rate |  | 5.43% |
Fixed Rate Debt | Notes and bonds |  |  |
Debt Instrument [Line Items] |  |  |
Weighted Average Interest Rate |  | 5.69% |
Fixed Rate Debt | Debt to (or guaranteed by) multilateral, export credit agencies or development banks |  |  |
Debt Instrument [Line Items] |  |  |
Weighted Average Interest Rate | [2] | 5.85% |
Fixed Rate Debt | Other |  |  |
Debt Instrument [Line Items] |  |  |
Weighted Average Interest Rate |  | 5.77% |
Other | Variable Rate Debt |  |  |
Debt Instrument [Line Items] |  |  |
Non-Recourse Debt | [1] | $ 56 | 39
Other | Fixed Rate Debt |  |  |
Debt Instrument [Line Items] |  |  |
Non-Recourse Debt |  | 36 | 13
Debt to (or guaranteed by) multilateral, export credit agencies or development banks | Variable Rate Debt |  |  |
Debt Instrument [Line Items] |  |  |
Non-Recourse Debt | [1],[2] | 3,189 | 3,089
Debt to (or guaranteed by) multilateral, export credit agencies or development banks | Fixed Rate Debt |  |  |
Debt Instrument [Line Items] |  |  |
Non-Recourse Debt | [2] | 328 | 309
Notes and bonds | Variable Rate Debt |  |  |
Debt Instrument [Line Items] |  |  |
Non-Recourse Debt | [1] | 1,204 | 1,169
Notes and bonds | Fixed Rate Debt |  |  |
Debt Instrument [Line Items] |  |  |
Non-Recourse Debt |  | 7,822 | 7,987
Bank loans | Variable Rate [Domain] |  |  |
Debt Instrument [Line Items] |  |  |
Non-Recourse Debt | [1] | 2,807 | 2,275
Bank loans | Fixed Rate Debt |  |  |
Debt Instrument [Line Items] |  |  |
Non-Recourse Debt |  | $ 791 | $ 557
[1] | The interest rate on variable rate debt represents the total of a variable component that is based on changes in an interest rate index and of a fixed component. The Company has interest rate swaps and option agreements in an aggregate notional principal amount of approximately $3.6 billion on non-recourse debt outstanding at December 31, 2016. These agreements economically fix the variable component of the interest rates on the portion of the variable-rate debt being hedged so that the total interest rate on that debt has been fixed at rates ranging from approximately 1.99% to 8.25%. The debt agreements expire at various dates from 2017 through 2073
[2] | (2)Multilateral loans include loans funded and guaranteed by bilaterals, multilaterals, development banks and other similar institutions.

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- Definition The current portion of the entity's non-recourse debt. 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 The non-current portion of the entity's non-recourse debt. 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 Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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