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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 3,387 $ 1,878
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 4,792 4,538
Equity component of AFUDC (173) (146)
Losses on sales of Commercial Renewables Disposal Groups 22 1,603
Gains on sales of other assets (25) (46)
Impairment of assets and other charges 39 96
Deferred income taxes 369 (29)
Equity in earnings of unconsolidated affiliates (53) (70)
Contributions to qualified pension plans (100) (100)
Payments for asset retirement obligations (417) (423)
Provision for rate refunds (28) (59)
(Increase) decrease in    
Net realized and unrealized mark-to-market and hedging transactions 35 29
Receivables (22) 481
Inventory (36) (531)
Other current assets 742 40
Increase (decrease) in    
Accounts payable 90 (972)
Taxes accrued 202 277
Other current liabilities (248) (116)
Other assets 154 491
Other liabilities 221 368
Net cash provided by operating activities 8,951 7,309
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (9,191) (9,310)
Contributions to equity method investments (8) (30)
Purchases of debt and equity securities (3,380) (2,811)
Proceeds from sales and maturities of debt and equity securities 3,450 2,848
Net proceeds from the sales of other assets 1 130
Other 723 578
Net cash used in investing activities (9,851) (9,751)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 7,760 8,704
Issuance of common stock 26 0
Redemption of preferred stock (1,000) 0
Payments for the redemption of long-term debt (2,833) (3,097)
Proceeds from the issuance of short-term debt with original maturities greater than 90 days 552 575
Payments for the redemption of short-term debt with original maturities greater than 90 days (1,025) (110)
Notes payable and commercial paper (42) (1,404)
Contributions from noncontrolling interests 47 278
Dividends paid (2,411) (2,438)
Other (84) (95)
Net cash provided by financing activities 990 2,413
Net increase (decrease) in cash, cash equivalents and restricted cash 90 (29)
Cash, cash equivalents and restricted cash at beginning of period 357 603
Cash, cash equivalents and restricted cash at end of period 447 574
Significant non-cash transactions:    
Accrued capital expenditures $ 1,604 $ 1,528