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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 2,072 $ 557
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 3,100 2,916
Equity component of AFUDC (116) (97)
Losses on sales of Commercial Renewables Disposal Groups 5 1,434
Gains on sales of other assets (18) (38)
Impairment of assets and other charges 44 8
Deferred income taxes 264 (52)
Equity in earnings of unconsolidated affiliates (38) (29)
Payments for asset retirement obligations (262) (261)
Provision for rate refunds (7) (57)
(Increase) decrease in    
Net realized and unrealized mark-to-market and hedging transactions (37) 93
Receivables (19) 586
Inventory (86) (517)
Other current assets 502 (41)
Increase (decrease) in    
Accounts payable (215) (1,245)
Taxes accrued (68) (8)
Other current liabilities (252) (154)
Other assets 331 608
Other liabilities 227 82
Net cash provided by operating activities 5,427 3,785
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (6,204) (6,265)
Contributions to equity method investments (8) (22)
Purchases of debt and equity securities (2,275) (1,594)
Proceeds from sales and maturities of debt and equity securities 2,319 1,628
Net proceeds from the sales of other assets 1 111
Other 408 366
Net cash used in investing activities (6,575) (6,508)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 6,372 7,094
Issuance of common stock 20 0
Payments for the redemption of long-term debt (2,731) (2,372)
Proceeds from the issuance of short-term debt with original maturities greater than 90 days 502 60
Payments for the redemption of short-term debt with original maturities greater than 90 days (824) (52)
Notes payable and commercial paper (414) (590)
Contributions from noncontrolling interests 47 248
Dividends paid (1,590) (1,606)
Other (108) (95)
Net cash provided by financing activities 1,274 2,687
Net increase (decrease) in cash, cash equivalents and restricted cash 126 (36)
Cash, cash equivalents and restricted cash at beginning of period 357 603
Cash, cash equivalents and restricted cash at end of period 483 567
Significant non-cash transactions:    
Accrued capital expenditures $ 1,721 $ 1,398