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Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2022
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Other comprehensive income (loss) on a pre-tax and after-tax basis |
Components of other comprehensive income (loss) on a pre-tax and after-tax basis
($ in millions) |  | Three months ended March 31,
| 2022 |  | 2021
| Pre-tax |  | Tax |  | After-tax |  | Pre-tax |  | Tax |  | After-tax
Unrealized net holding gains and losses arising during the period, net of related offsets |  | $ | (2,149) |  |  | $ | 459 |  |  | $ | (1,690) |  |  | $ | (1,718) |  |  | $ | 364 |  |  | $ | (1,354) |
Less: reclassification adjustment of realized capital gains and losses |  | (123) |  |  | 26 |  |  | (97) |  |  | 185 |  |  | (39) |  |  | 146 |
Unrealized net capital gains and losses |  | (2,026) |  |  | 433 |  |  | (1,593) |  |  | (1,903) |  |  | 403 |  |  | (1,500) |
Unrealized foreign currency translation adjustments |  | — |  |  | — |  |  | — |  |  | 43 |  |  | (9) |  |  | 34 |
Unamortized pension and other postretirement prior service credit (1) |  | (19) |  |  | 4 |  |  | (15) |  |  | (19) |  |  | 4 |  |  | (15) |
Other comprehensive (loss) income |  | $ | (2,045) |  |  | $ | 437 |  |  | $ | (1,608) |  |  | $ | (1,879) |  |  | $ | 398 |  |  | $ | (1,481) |
(1) Represents prior service credits reclassified out of other comprehensive income and amortized into operating costs and expenses.

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e526-108580 + Details
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