Changes in AOCI for the periods were: | | | | | | | | | | | | | | | | | | | | | | | | Successor | | | Predecessor | | | | Six Months Ended June 30, 2024 | | May 18 through June 30, 2023 | | | January 1 through May 17, 2023 | | | Beginning balance | $ | (23) | | | $ | — | | | | $ | (167) | | | | Gains (losses) arising during the period | 1 | | | (6) | | | | 6 | | | | Reclassifications to Consolidated Statements of Operations (a) | (12) | | | 1 | | | | 5 | | | | Income tax benefit (expense) | 5 | | | 2 | | | | (5) | | | | Other comprehensive income (loss) | (6) | | | (3) | | | | 6 | | | | | | | | | | | | | Accumulated other comprehensive income (loss) | $ | (29) | | | $ | (3) | | | | $ | — | | | |
_____________ (a)Primarily reclassification to “Nuclear decommission trust fund gain (loss), net”. The components of AOCI, net of tax, at June 30 were: | | | | | | | | | | | | | | | | | | Successor | | | Predecessor | | 2024 | | | 2023 | | | Available-for-sale securities unrealized gain (loss), net | $ | (1) | | | | $ | (3) | | | | | | | | | | | | | | | | | | Postretirement benefit actuarial gain (loss), net | (28) | | | | — | | | | Accumulated other comprehensive income (loss) | $ | (29) | | | | $ | (3) | | | |
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