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v3.25.2

Accumulated Other Comprehensive Income (Loss) - After-tax Changes by Component (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance at beginning of period | $ (184) | $ (161) | $ (184) | $ (163)
Amounts arising during the period | (7) | 2 | (7) | 3
Reclassifications from AOCI | 1 | (1) | 1 | 0
Net OCI during the period | (6) | 1 | (6) | 3
Balance at end of period | (190) | (160) | (190) | (160)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance at beginning of period | (3) | (4) | (3) | (4)
Amounts arising during the period | 0 | 0 | 0 | 0
Reclassifications from AOCI | 0 | 0 | 0 | 0
Net OCI during the period | 0 | 0 | 0 | 0
Balance at end of period | (3) | (4) | (3) | (4)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance at beginning of period | (195) | (168) | (194) | (168)
Amounts arising during the period | (8) | 2 | (8) | 2
Reclassifications from AOCI | 1 | (1) | 0 | (1)
Net OCI during the period | (7) | 1 | (8) | 1
Balance at end of period | (202) | (167) | (202) | (167)
Equity Investees' OCI |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance at beginning of period | 4 | 4 | 4 | 3
Amounts arising during the period | 0 | 0 | 0 | 1
Reclassifications from AOCI | 0 | 0 | 0 | 0
Net OCI during the period | 0 | 0 | 0 | 1
Balance at end of period | 4 | 4 | 4 | 4
Unrealized gains (losses) on qualifying derivatives [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Balance at beginning of period | 10 | 7 | 9 | 6
Amounts arising during the period | 1 | 0 | 1 | 0
Reclassifications from AOCI | 0 | 0 | 1 | 1
Net OCI during the period | 1 | 0 | 2 | 1
Balance at end of period | $ 11 | $ 7 | $ 11 | $ 7

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