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Comprehensive Income | 9 Months Ended
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Sep. 30, 2025
Comprehensive Income [Abstract] |
Comprehensive Income | (16) Comprehensive Income: Comprehensive income consists of net income and other gains and losses affecting shareholders’ equity (deficit) and pension/postretirement benefit (OPEB) liabilities that, under GAAP, are excluded from net income. The components of accumulated other comprehensive income, net of tax, are as follows:
|  | OPEB |  |
($ in millions) |  | Costs |  |
Balance at January 1, 2025 (1) |  | $ | 77 |  |
Other comprehensive income before reclassifications |  |  | - |  |
Amounts reclassified from accumulated other |  |  |  |  |
comprehensive loss to net loss |  |  | (14) |  |
Net current-period other comprehensive loss |  |  | (14) |  |
Balance at September 30, 2025 (1) |  | $ | 63 |  |
|  | OPEB |  |
($ in millions) |  | Costs |  |
Balance at January 1, 2024 (1) |  | $ | 96 |  |
Other comprehensive income before reclassifications |  |  | 1 |  |
Amounts reclassified from accumulated other |  |  |  |  |
comprehensive loss to net income |  |  | (15) |  |
Net current-period other comprehensive income |  |  | (14) |  |
Balance at September 30, 2024 (1) |  | $ | 82 |  |
(1)OPEB amounts are net of deferred tax balances of $23 million and $29 million as of January 1, 2025 and 2024, respectively, and $18 million and $24 million as of September 30, 2025 and 2024, respectively. The significant items reclassified from each component of accumulated other comprehensive loss are as follows:
|  |  | Amount Reclassified from |  |  |
|  |  | Accumulated Other |  |  |
|  |  | Comprehensive Income (1) |  |  |
($ in millions) |  |  |  |  |  |  |  |  |  |  |  |  |  | Affected Line Item in |
|  | For the three months ended |  | For the nine months ended |  | the Statement Where |
Details about Accumulated Other |  | September 30, |  | September 30, |  | Net Income (Loss) |
Comprehensive Loss Components |  | 2025 |  | 2024 |  | 2025 |  | 2024 |  | is Presented |
Amortization of OPEB Cost Items ‎Prior-service credits (costs) |  | $ | 7 |  | $ | 6 |  | $ | 19 |  | $ | 19 |  | Income (loss) before income taxes |
Tax impact |  |  | (2) |  |  | (1) |  |  | (5) |  |  | (4) |  | Income tax benefit |
|  | $ | 5 |  | $ | 5 |  | $ | 14 |  | $ | 15 |  | Net income |
(1)These accumulated other comprehensive income components are included in the computation of net periodic pension and OPEB costs (see Note 17 - Retirement Plans for additional details).

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/220/tableOfContent + Details
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