v2.4.0.6
Consolidated Statements of Operations (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Operating revenues:      
Commodity revenue $ 5,417 $ 6,753 $ 6,578
Unrealized mark-to-market gain (loss) 48 35 (61)
Other revenue 13 12 28
Operating revenues 5,478 6,800 6,545
Operating expenses:      
Commodity expense 2,894 4,299 4,187
Unrealized mark-to-market (gain) loss 130 60 (204)
Fuel and purchased energy expense 3,024 4,359 3,983
Plant operating expense 922 904 868
Depreciation and amortization expense 562 550 570
Sales, general and other administrative expense 140 131 151
Other operating expenses 78 77 91
Total operating expenses 4,726 6,021 5,663
Impairment losses 0 0 116
(Gain) on sale of assets, net (222) 0 (119)
(Income) from unconsolidated investments in power plants (28) (21) (16)
Income from operations 1,002 800 901
Interest expense 736 760 813
Loss on interest rate derivatives 14 145 223
Interest (income) (11) (9) (11)
Debt extinguishment costs 30 94 91
Other (income) expense, net 15 21 15
Income (loss) before income taxes and discontinued operations 218 (211) (230)
Income tax expense (benefit) 19 (22) [1] (68)
Income (loss) before discontinued operations 199 (189) (162)
Discontinued operations, net of tax expense 0 0 193
Net income (loss) 199 (189) 31
Net income attributable to the noncontrolling interest 0 (1) 0
Net income (loss) attributable to Calpine $ 199 $ (190) $ 31
Basic earnings (loss) per common share attributable to Calpine:      
Weighted average shares of common stock outstanding (in shares) 467,752 485,381 486,044
Income (loss) before discontinued operations attributable to Calpine (in dollars per share) $ 0.43 $ (0.39) $ (0.33)
Discontinued operations, net of tax expense attributable to Calpine (in dollars per share) $ 0.00 $ 0.00 $ 0.39
Net income (loss) per common share attributable to Calpine — basic (in dollars per share) $ 0.43 $ (0.39) $ 0.06
Diluted earnings (loss) per common share attributable to Calpine:      
Weighted average shares of common stock outstanding (in shares) 471,343 485,381 487,294
Income (loss) before discontinued operations attributable to Calpine (in dollars per share) $ 0.42 $ (0.39) $ (0.33)
Discontinued operations, net of tax expense attributable to Calpine (in dollars per share) $ 0.00 $ 0.00 $ 0.39
Net income (loss) per common share attributable to Calpine — diluted (in dollars per share) $ 0.42 $ (0.39) $ 0.06
[1] Includes approximately $13 million in intraperiod tax expense related to a prior period with an offsetting benefit in OCI.