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Segment Information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Operating revenues | $ 14,779 | $ 13,728 | $ 12,077
Depreciation and amortization: | (1,502) | (1,596) | (1,753)
Operating income (loss): | 2,661 | (1,177) | (1,515)
Interest expense and related charges: | (740) | (368) | (384)
Income tax (expense) benefit: | (508) | 350 | 458
Net income (loss) | 1,492 | (1,210) | (1,264)
Capital expenditures, including nuclear fuel and excluding LTSA prepayments and development and growth expenditures: | 751 | 596 | 398
Corporate and Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 2 | 1 | 0
Depreciation and amortization: | (68) | (69) | (36)
Operating income (loss): | (193) | (135) | (83)
Interest expense and related charges: | (742) | (371) | (381)
Income tax (expense) benefit: | (507) | 350 | 460
Net income (loss) | (1,527) | (270) | 53
Capital expenditures, including nuclear fuel and excluding LTSA prepayments and development and growth expenditures: | 58 | 55 | 48
Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | (6,578) | (4,755) | (2,284)
Depreciation and amortization: | 0 | 0 | 0
Operating income (loss): | 0 | 0 | 0
Interest expense and related charges: | 0 | 0 | 1
Income tax (expense) benefit: | 0 | 0 | 0
Net income (loss) | 0 | 0 | 0
Capital expenditures, including nuclear fuel and excluding LTSA prepayments and development and growth expenditures: | 0 | 0 | 0
Retail | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 10,572 | 9,455 | 7,871
Depreciation and amortization: | (102) | (145) | (212)
Operating income (loss): | 443 | 1,172 | 2,213
Interest expense and related charges: | (20) | (14) | (9)
Income tax (expense) benefit: | 0 | 0 | (2)
Net income (loss) | 424 | 1,158 | 2,196
Capital expenditures, including nuclear fuel and excluding LTSA prepayments and development and growth expenditures: | 1 | 1 | 1
Texas | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 3,823 | 3,733 | 2,790
Depreciation and amortization: | (544) | (537) | (608)
Operating income (loss): | 300 | (711) | (2,601)
Interest expense and related charges: | 21 | 20 | 14
Income tax (expense) benefit: | 0 | 0 | 0
Net income (loss) | 354 | (615) | (2,512)
Capital expenditures, including nuclear fuel and excluding LTSA prepayments and development and growth expenditures: | 500 | 335 | 266
East | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 4,215 | 3,706 | 2,587
Depreciation and amortization: | (647) | (706) | (698)
Operating income (loss): | 1,158 | (867) | (552)
Interest expense and related charges: | 0 | (3) | (15)
Income tax (expense) benefit: | (1) | 0 | 0
Net income (loss) | 1,160 | (868) | (567)
Capital expenditures, including nuclear fuel and excluding LTSA prepayments and development and growth expenditures: | 105 | 56 | 44
West | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 914 | 336 | 374
Depreciation and amortization: | (79) | (42) | (60)
Operating income (loss): | 425 | (250) | (8)
Interest expense and related charges: | 8 | 6 | 9
Income tax (expense) benefit: | 0 | 0 | 0
Net income (loss) | 454 | (238) | 1
Capital expenditures, including nuclear fuel and excluding LTSA prepayments and development and growth expenditures: | 18 | 116 | 8
Sunset | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 1,831 | 868 | 661
Depreciation and amortization: | (62) | (66) | (94)
Operating income (loss): | 639 | (228) | (67)
Interest expense and related charges: | (2) | (3) | (3)
Income tax (expense) benefit: | 0 | 0 | 0
Net income (loss) | 633 | (230) | (61)
Capital expenditures, including nuclear fuel and excluding LTSA prepayments and development and growth expenditures: | 69 | 33 | 28
Asset Closure | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating revenues | 0 | 384 | 78
Depreciation and amortization: | 0 | (31) | (45)
Operating income (loss): | (111) | (158) | (417)
Interest expense and related charges: | (5) | (3) | 0
Income tax (expense) benefit: | 0 | 0 | 0
Net income (loss) | (6) | (147) | (374)
Capital expenditures, including nuclear fuel and excluding LTSA prepayments and development and growth expenditures: | $ 0 | $ 0 | $ 3

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