v3.6.0.2
Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Operating revenues:      
Commodity revenue $ 6,943 $ 6,389 $ 7,595
Mark to Market Gain Loss on Derivatives included in Operating Revenues (245) 65 419
Other revenue 18 18 16
Operating revenues 6,716 6,472 8,030
Operating expenses:      
Commodity expense 4,431 3,589 4,815
Mark to Market Gain Loss on Derivatives Included in Fuel and Purchased Energy Expense (244) 178 77
Fuel and purchased energy expense 4,187 3,767 4,892
Plant operating expense 977 1,018 969
Depreciation and amortization expense 662 638 603
Sales, general and other administrative expense 140 138 144
Other operating expenses 79 80 88
Total operating expenses 6,045 5,641 6,696
Impairment losses 13 0 123
(Gain) on sale of assets, net (157) 0 (753)
(Income) from unconsolidated subsidiaries (24) (24) (25)
Income from operations 839 855 1,989
Interest expense 631 628 645
Debt modification and extinguishment costs 25 40 346
Other (income) expense, net 24 14 15
Income before income taxes 159 173 983
Income tax expense (benefit) 48 (76) 22
Net income 111 249 961
Net income attributable to the noncontrolling interest (19) (14) (15)
Net income attributable to Calpine $ 92 $ 235 $ 946
Basic earnings per common share attributable to Calpine:      
Weighted average shares of common stock outstanding (in shares) 354,006 362,033 404,837
Net income (loss) per common share attributable to Calpine — basic (in dollars per share) $ 0.26 $ 0.65 $ 2.34
Diluted earnings per common share attributable to Calpine:      
Weighted average shares of common stock outstanding (in shares) 356,110 364,886 409,360
Net income (loss) per common share attributable to Calpine — diluted (in dollars per share) $ 0.26 $ 0.64 $ 2.31