v2.4.0.6

Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2012
Property, Plant and Equipment [Line Items] |
Property, Plant and Equipment [Table Text Block] | Property, Plant and Equipment, Net — At September 30, 2012 and December 31, 2011, the components of property, plant and equipment are stated at cost less accumulated depreciation as follows (in millions):
| September 30, 2012 |  | December 31, 2011
Buildings, machinery and equipment | $ | 15,150 |  |  | $ | 15,074 |
Geothermal properties | 1,212 |  |  | 1,163 |
Other | 158 |  |  | 156 |
| 16,520 |  |  | 16,393 |
Less: Accumulated depreciation | 4,518 |  |  | 4,158 |
| 12,002 |  |  | 12,235 |
Land | 91 |  |  | 91 |
Construction in progress | 1,036 |  |  | 693 |
Property, plant and equipment, net | $ | 13,129 |  |  | $ | 13,019 |
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block] | Leases — We have contracts, such as certain tolling agreements, which we account for as operating leases under U.S. GAAP. Generally, we levelize certain components of these contract revenues on a straight-line basis over the term of the contract. The total contractual future minimum lease rentals for our contracts accounted for as operating leases, excluding tolling agreements related to power plants under construction, at September 30, 2012, are as follows (in millions):
2012 | $ | 114 |
2013 | 527 |
2014 | 452 |
2015 | 461 |
2016 | 375 |
Thereafter | 2,270 |
Total | $ | 4,199 |
Schedule of Components of Restricted Cash | The table below represents the components of our restricted cash as of September 30, 2012 and December 31, 2011 (in millions):
| September 30, 2012 |  | December 31, 2011
| Current |  | Non-Current |  | Total |  | Current |  | Non-Current |  | Total
Debt service(1) | $ | 22 |  |  | $ | 42 |  |  | $ | 64 |  |  | $ | 11 |  |  | $ | 42 |  |  | $ | 53 |
Rent reserve | 3 |  |  | — |  |  | 3 |  |  | — |  |  | — |  |  | — |
Construction/major maintenance | 37 |  |  | 11 |  |  | 48 |  |  | 33 |  |  | 10 |  |  | 43 |
Security/project/insurance | 101 |  |  | 8 |  |  | 109 |  |  | 79 |  |  | — |  |  | 79 |
Other | — |  |  | 2 |  |  | 2 |  |  | 16 |  |  | 3 |  |  | 19 |
Total | $ | 163 |  |  | $ | 63 |  |  | $ | 226 |  |  | $ | 139 |  |  | $ | 55 |  |  | $ | 194 |
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(1) | At September 30, 2012 and December 31, 2011, amounts restricted for debt service included approximately $24 million and $25 million, respectively, of repurchase agreements with a financial institution containing maturity dates greater than one year.

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- Definition Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph b -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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- Definition Tabular disclosure of the cash and cash items which are restricted as to withdrawal or usage. The provisions of any restrictions are described in a note to the financial statements. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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