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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Net income (loss) | $ 183 | $ 190 | $ 597 | $ 497
Amounts arising during the period - gains (losses), net of tax (expense) benefit: |  |  |  |
Qualifying derivatives, amounts arising during the period, net of tax | 1 | 0 | 1 | 0
Equity investees' other comprehensive income (loss), net of tax | 0 | 0 | 0 | 1
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax [Abstract] |  |  |  |
Defined benefit plan, Net actuarial gain (loss), amounts arising during the period, net of tax | (8) | 2 | (8) | 2
Reclassifications from AOCI - (gains) losses, net of tax expense (benefit): |  |  |  |
Qualifying derivatives, net of tax | 0 | 0 | 1 | 1
Other Comprehensive (Income) Loss, Defined Benefit Plans, after Reclassification Adjustment, after Tax [Abstract] |  |  |  |
Defined benefit plans, Net actuarial (gain) loss, net of tax | 1 | (1) | 0 | (1)
Total other comprehensive income (loss) | (6) | 1 | (6) | 3
Comprehensive income (loss) | $ 177 | $ 191 | $ 591 | $ 500

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