v2.4.0.8
Consolidated Condensed Statements of Cash Flows (USD $)
In Millions, unless otherwise specified
 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Cash flows from operating activities:    
Net income $ 747 $ 111
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization expense(1) 486 [1] 474 [1]
Debt extinguishment costs 35 28
Deferred income taxes (9) 18
Impairment losses 123 0
(Gain) on sale of assets, net (753) 0
Mark-to-market activity, net (88) [2] (14) [2]
(Income) from unconsolidated investments in power plants (18) (25)
Return on unconsolidated investments in power plants 13 23
Stock-based compensation expense 30 28
Other 0 3
Change in operating assets and liabilities:    
Accounts receivable (120) (219)
Derivative instruments, net (69) 47
Other assets 54 (111)
Accounts payable and accrued expenses 127 (11)
Other liabilities (54) 63
Net cash provided by operating activities 504 415
Cash flows from investing activities:    
Purchases of property, plant and equipment (354) (472)
Proceeds from sale of power plants, interests and other 1,573 0
Purchase of Guadalupe Energy Center, net of cash (656) 0
(Increase) decrease in restricted cash (15) 5
Other 2 (1)
Net cash provided by (used in) investing activities 550 (468)
Cash flows from financing activities:    
Borrowings under CCFC Term Loans 420 1,197
Repayment of CCFC Term Loans, CCFC Notes and First Lien Term Loans (34) (1,022)
Borrowings under Senior Unsecured Notes 2,800 0
Repayments of First Lien Notes (2,800) 0
Borrowings from project financing, notes payable and other 79 139
Repayments of project financing, notes payable and other (116) (51)
Distribution to noncontrolling interest holder (12) 0
Financing costs (55) (27)
Stock repurchases (767) (462)
Proceeds from exercises of stock options 19 19
Net cash used in financing activities (466) (207)
Net increase (decrease) in cash and cash equivalents 588 (260)
Cash and cash equivalents, beginning of period 941 1,284
Cash and cash equivalents, end of period 1,529 1,024
Cash paid during the period for:    
Interest, net of amounts capitalized 534 547
Income taxes 19 22
Supplemental disclosure of non-cash investing activities:    
Change in capital expenditures included in accounts payable $ 8 $ 10
[1] Includes depreciation and amortization included in fuel and purchased energy expense and interest expense on our Consolidated Condensed Statements of Operations
[2] In addition to changes in market value on derivatives not designated as hedges, changes in mark-to-market gain (loss) also includes de-designation of interest rate swap cash flow hedges and related reclassification from AOCI into earnings, hedge ineffectiveness and adjustments to reflect changes in credit default risk exposure.