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Accumulated Other Comprehensive Loss | 3 Months Ended
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Mar. 31, 2025
Equity [Abstract] |
Accumulated Other Comprehensive Loss | Accumulated Other Comprehensive Loss The changes in the cumulative balances of “Accumulated other comprehensive loss” reported in the Consolidated Balance Sheets consisted of the following:
| Balance at Beginning of Year |  | Net Income |  | Reclassification Adjustments |  | Balance at End of Period
| ($ in millions)
Three months ended March 31, 2025 |  |  |  |  |  |  |
Pensions and other postretirement liabilities | $ | (240) |  |  | $ | — |  |  | $ | — |  |  | $ | (240) |
Other comprehensive income of equity investees | (22) |  |  | 1 |  |  | — |  |  | (21) |
Accumulated other comprehensive loss | $ | (262) |  |  | $ | 1 |  |  | $ | — |  |  | $ | (261) |
Three months ended March 31, 2024 |  |  |  |  |  |  |
Pensions and other postretirement liabilities | $ | (292) |  |  | $ | — |  |  | $ | (2) |  |  | $ | (294) |
Other comprehensive loss of equity investees | (28) |  |  | — |  |  | — |  |  | (28) |
Accumulated other comprehensive loss | $ | (320) |  |  | $ | — |  |  | $ | (2) |  |  | $ | (322) |

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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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