v2.4.0.6

Quarterly Consolidated Financial Data (unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Consolidated Financial Data (unaudited) |
| Quarter Ended
| December 31 |  | September 30 |  | June 30 |  | March 31
| (in millions, except per share amounts)
2012 |  |  |  |  |  |  |
Operating revenues | $ | 1,367 |  |  | $ | 1,996 |  |  | $ | 879 |  |  | $ | 1,236 |
Income (loss) from operations | $ | 295 |  |  | $ | 705 |  |  | $ | (193 | ) |  | $ | 195 |
Net income (loss) attributable to Calpine | $ | 100 |  |  | $ | 437 |  |  | $ | (329 | ) |  | $ | (9 | )
Net income (loss) per common share attributable to Calpine — Basic | $ | 0.22 |  |  | $ | 0.95 |  |  | $ | (0.69 | ) |  | $ | (0.02 | )
Net income (loss) per common share attributable to Calpine — Diluted | $ | 0.22 |  |  | $ | 0.94 |  |  | $ | (0.69 | ) |  | $ | (0.02 | )
2011 |  |  |  |  |  |  |
Operating revenues | $ | 1,459 |  |  | $ | 2,209 |  |  | $ | 1,633 |  |  | $ | 1,499 |
Income from operations | $ | 196 |  |  | $ | 403 |  |  | $ | 183 |  |  | $ | 18 |
Net income (loss) attributable to Calpine | $ | (13 | ) |  | $ | 190 |  |  | $ | (70 | ) |  | $ | (297 | )
Net income (loss) per common share attributable to Calpine — Basic | $ | (0.03 | ) |  | $ | 0.39 |  |  | $ | (0.14 | ) |  | $ | (0.61 | )
Net income (loss) per common share attributable to Calpine — Diluted | $ | (0.03 | ) |  | $ | 0.39 |  |  | $ | (0.14 | ) |  | $ | (0.61 | )

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=20225539&loc=d3e1280-108306 + Details
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