v3.19.1

Consolidated Condensed Statements of Operations - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Operating revenues: |  |  |
Commodity revenue |  | $ 2,538 | $ 2,396
Mark-to-market gain (loss) |  | 56 | (391)
Other revenue |  | 5 | 4
Operating revenues | [1] | 2,599 | 2,009
Operating expenses: |  |  |
Commodity expense |  | 1,758 | 1,790
Mark-to-market (gain) loss |  | 10 | (20)
Fuel and purchased energy expense |  | 1,768 | 1,770
Operating and maintenance expense |  | 239 | 275
Depreciation and amortization expense |  | 174 | 201
General and other administrative expense |  | 32 | 60
Other operating expenses |  | 34 | 37
Total operating expenses |  | 2,247 | 2,343
(Income) from unconsolidated subsidiaries |  | (6) | (6)
Income (loss) from operations |  | 358 | (328)
Interest expense |  | 149 | 151
Gain on extinguishment of debt |  | (4) | 0
Other (income) expense, net |  | 23 | 7
Income (loss) before income taxes |  | 190 | (486)
Income tax expense |  | 10 | 108
Net income (loss) |  | 180 | (594)
Net income attributable to the noncontrolling interest |  | (5) | (4)
Net income (loss) attributable to Calpine |  | $ 175 | $ (598)
[1] | Includes intersegment revenues of $162 million and $114 million in the West, $211 million and $(67) million in Texas, $137 million and $115 million in the East and $3 million and $1 million in Retail for the three months ended March 31, 2019 and 2018, respectively.

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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
Name: | us-gaap_SellingGeneralAndAdministrativeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration