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STATEMENTS OF CONSOLIDATED CASH FLOWS - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Cash Flows from Operating Activities:      
Net income $ 1,019 $ 917 $ 1,057
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 1,439 1,401 1,288
Deferred income taxes 221 31 20
Gain on divestitures 0 (13) 303
Loss (gain) on equity securities (20) (31) 227
Loss (gain) on indexed debt securities 14 27 (325)
Pension contributions (30) (32) (35)
Changes in other assets and liabilities:      
Accounts receivable and unbilled revenues, net (84) 423 (461)
Inventory 42 167 (259)
Taxes receivable (27) (74) (19)
Accounts payable 210 (302) 203
Current regulatory assets and liabilities (86) 1,152 67
Non-current regulatory assets and liabilities (644) (109) 167
Other current assets and liabilities 101 162 (5)
Other non-current assets and liabilities 30 (72) (109)
Other operating activities, net 14 60 79
Net cash provided by operating activities 2,139 3,877 1,810
Cash Flows from Investing Activities:      
Capital expenditures (4,513) (4,401) (4,419)
Proceeds from sale of equity securities, net of transaction costs 0 0 702
Proceeds from divestitures 0 144 2,075
Other investing activities, net 24 24 14
Net cash provided by (used in) investing activities (4,489) (4,233) (1,628)
Cash Flows from Financing Activities:      
Increase (decrease) in short-term borrowings, net (4) (10) 452
Payment of obligation for finance lease 0 0 (485)
Payments of commercial paper, net (539) (1,055) (74)
Proceeds from long-term debt and term loans, net 3,955 6,044 2,089
Payments of long-term debt and term loans, including make-whole premiums (1,050) (3,190) (1,795)
Payment of debt issuance costs (35) (55) (36)
Payment of dividends on Common Stock (522) (485) (440)
Payment of dividends on Preferred Stock 0 (50) (49)
Proceeds from issuance of Common Stock, net 494 0 0
Redemption of Series A Preferred Stock 0 (800) 0
Other financing activities, net (28) (25) (7)
Net cash provided by (used in) financing activities 2,271 374 (345)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash (79) 18 (163)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period 109 91 254
Cash, Cash Equivalents and Restricted Cash at End of Period $ 30 $ 109 $ 91