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Condensed Consolidated Statements Of Cash Flows - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Cash Flows from Operating Activities    
Net Income $ 482 $ 233
Income/(loss) from discontinued operations, net of income tax 388 (5)
Income from Continuing Operations 94 238
Adjustments to reconcile net income to net cash provided by operating activities:    
Equity in losses/(earnings) of unconsolidated affiliates 21 (1)
Depreciation, amortization and accretion 92 131
Provision for bad debts 26 15
Amortization of nuclear fuel 13 13
Amortization of financing costs and debt discount/premiums 7 6
Adjustment for debt extinguishment 0 2
Amortization of intangibles and out-of-market contracts 6 9
Amortization of unearned equity compensation 4 6
Loss/(gain) on sale and disposal of assets 3 (10)
Changes in derivative instruments (15) (203)
Changes in deferred income taxes and liability for uncertain tax benefits (2) (1)
Changes in collateral deposits in support of energy risk management activities (123) 163
Changes in nuclear decommissioning trust liability 9 34
Changes in other working capital (270) (156)
Cash used by continuing operations (135) 246
Cash provided by discontinued operations 8 104
Net Cash Provided/(Used) by Operating Activities (127) 350
Cash Flows from Investing Activities    
Payments for acquisitions of businesses (16) (2)
Capital expenditures (49) (155)
Net proceeds from sale of emission allowances 0 6
Investments in nuclear decommissioning trust fund securities (122) (216)
Proceeds from the sale of nuclear decommissioning trust fund securities 113 182
Proceeds from sale of assets, net of cash disposed and sale of discontinued operations, net of fees 1,313 53
Changes in investments in unconsolidated affiliates 4 (8)
Contributions to discontinued operations (44) (29)
Other (1) 0
Cash (used)/provided by continuing operations 1,198 (169)
Cash used by discontinued operations (2) (291)
Net Cash (Used)/Provided by Investing Activities 1,196 (460)
Cash Flows from Financing Activities    
Payments of dividends to common stockholders (8) (10)
Payments for treasury stock (747) (93)
Distributions to noncontrolling interests from subsidiaries (1) (10)
Proceeds from issuance of common stock 2 7
Payment of debt issuance costs 0 (2)
Payments for long-term debt (37) (39)
Cash used by continuing operations (791) (147)
Cash provided by discontinued operations 43 133
Net Cash Used by Financing Activities (748) (14)
Change in Cash from discontinued operations 49 (54)
Net Increase/(Decrease) in Cash and Cash Equivalents, Funds Deposited by Counterparties and Restricted Cash 272 (70)
Cash and Cash Equivalents, Funds Deposited by Counterparties and Restricted Cash at Beginning of Period 613 1,086
Cash and Cash Equivalents, Funds Deposited by Counterparties and Restricted Cash at End of Period $ 885 $ 1,016