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Business Segment Information (Schedule of Segment Reporting Information, by Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Mar. 31, 2024 | Jun. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Segment Financial Information Abstract |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 2,953,620 |  | $ 2,846,026 |  | $ 5,748,248 | $ 5,827,085 |
Income Tax Expense (Benefit) | 33,634 |  | 134,796 |  | 54,627 | 55,821 |
Consolidated net income | 51,732 | $ 76,536 | 392,014 | $ 312,299 | 128,268 | 704,312 |
Assets | 62,766,297 |  |  |  | 62,766,297 |  | $ 59,703,396
Utility [Member] |  |  |  |  |  |  |
Segment Financial Information Abstract |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 2,941,404 |  | 2,818,747 |  | 5,713,577 | 5,766,738 |
Income Tax Expense (Benefit) | 113,017 |  | 144,489 |  | 147,565 | 78,363 |
Consolidated net income | 443,319 |  | 514,498 |  | 639,299 | 912,664 |
Assets | 66,945,968 |  |  |  | 66,945,968 |  | 63,887,038
Corporate and Other [Member] |  |  |  |  |  |  |
Segment Financial Information Abstract |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 12,227 |  | 27,287 |  | 34,703 | 60,358 |
Income Tax Expense (Benefit) | (79,383) |  | (9,693) |  | (92,938) | (22,542) |
Consolidated net income | (312,702) |  | (40,559) |  | (352,585) | (70,953) |
Assets | 925,848 |  |  |  | 925,848 |  | 836,598
Eliminations [Member] |  |  |  |  |  |  |
Segment Financial Information Abstract |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | (11) |  | (8) |  | (32) | (11) |
Income Tax Expense (Benefit) | 0 |  | 0 |  | 0 | 0 |
Consolidated net income | (78,885) |  | $ (81,925) |  | (158,446) | $ (137,399) |
Assets | $ (5,105,519) |  |  |  | $ (5,105,519) |  | $ (5,020,240)

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