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Segment Information (Tables)
 12 Months Ended
Dec. 31, 2023
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment

For the year ended		RetailTexasEastWestSunsetAsset Closure
Corporate and Other (a)
EliminationsConsolidated
Operating revenues:
December 31, 2023$10,572 $3,823 $4,215 $914 $1,831 $— $2 $(6,578)$14,779 
December 31, 20229,455 3,733 3,706 336 868 384 1 (4,755)13,728 
December 31, 20217,871 2,790 2,587 374 661 78 — (2,284)12,077 
Depreciation and amortization:
December 31, 2023$(102)$(544)$(647)$(79)$(62)$— $(68)$— $(1,502)
December 31, 2022(145)(537)(706)(42)(66)(31)(69)— (1,596)
December 31, 2021(212)(608)(698)(60)(94)(45)(36)— (1,753)
Operating income (loss):
December 31, 2023$443 $300 $1,158 $425 $639 $(111)$(193)$— $2,661 
December 31, 20221,172 (711)(867)(250)(228)(158)(135)— (1,177)
December 31, 20212,213 (2,601)(552)(8)(67)(417)(83)— (1,515)
Interest expense and related charges:
December 31, 2023$(20)$21 $— $8 $(2)$(5)$(742)$— $(740)
December 31, 2022(14)20 (3)6 (3)(3)(371)— (368)
December 31, 2021(9)14 (15)9 (3)— (381)1 (384)
Income tax (expense) benefit:
December 31, 2023$— $— $(1)$— $— $— $(507)$— $(508)
December 31, 2022— — — — — — 350 — 350 
December 31, 2021(2)— — — — — 460 — 458 
Net income (loss):
December 31, 2023$424 $354 $1,160 $454 $633 $(6)$(1,527)$— $1,492 
December 31, 20221,158 (615)(868)(238)(230)(147)(270)— (1,210)
December 31, 20212,196 (2,512)(567)1 (61)(374)53 — (1,264)
Capital expenditures, including nuclear fuel and excluding LTSA prepayments and development and growth expenditures:
December 31, 2023$1 $500 $105 $18 $69 $— $58 $— $751 
December 31, 20221 335 56 116 33 — 55 — 596 
December 31, 20211 266 44 8 28 3 48 — 398 
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(a)Income tax (expense) benefit is generally not reflected in net income (loss) of the segments but is reflected almost entirely in Corporate and Other net income (loss).