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Other Comprehensive Income (Loss) | 3 Months Ended
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Mar. 31, 2024
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Other Comprehensive Income (Loss) |
Note 16 | Other Comprehensive Income (Loss)
Components of other comprehensive income (loss) on a pre-tax and after-tax basis
($ in millions) |  | Three months ended March 31,
| 2024 |  | 2023
| Pre-tax |  | Tax |  | After-tax |  | Pre-tax |  | Tax |  | After-tax
Unrealized net holding gains and losses arising during the period, net of related offsets |  | $ | (375) |  |  | $ | 80 |  |  | $ | (295) |  |  | $ | 729 |  |  | $ | (156) |  |  | $ | 573 |
Less: reclassification adjustment of realized capital gains and losses |  | (101) |  |  | 21 |  |  | (80) |  |  | (138) |  |  | 29 |  |  | (109) |
Unrealized net capital gains and losses |  | (274) |  |  | 59 |  |  | (215) |  |  | 867 |  |  | (185) |  |  | 682 |
Unrealized foreign currency translation adjustments |  | 10 |  |  | (2) |  |  | 8 |  |  | 63 |  |  | (13) |  |  | 50 |
Unamortized pension and other postretirement prior service credit (1) |  | (1) |  |  | — |  |  | (1) |  |  | (6) |  |  | 2 |  |  | (4) |
Discount rate for reserve for future policy benefits |  | 32 |  |  | (7) |  |  | 25 |  |  | (11) |  |  | 2 |  |  | (9) |
Other comprehensive (loss) income |  | $ | (233) |  |  | $ | 50 |  |  | $ | (183) |  |  | $ | 913 |  |  | $ | (194) |  |  | $ | 719 |
(1) Represents prior service credits reclassified out of other comprehensive income and amortized into operating costs and expenses.

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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//1943274/2147483586/944-220-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//1943274/2147483589/942-220-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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