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Other Comprehensive Income | 3 Months Ended
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Mar. 31, 2021
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Other Comprehensive Income |
Note 16 | Other Comprehensive Income
Components of other comprehensive income (loss) on a pre-tax and after-tax basis
($ in millions) |  | Three months ended March 31,
| 2021 |  | 2020
| Pre-tax |  | Tax |  | After-tax |  | Pre-tax |  | Tax |  | After-tax
Unrealized net holding gains and losses arising during the period, net of related offsets |  | $ | (1,718) |  |  | $ | 364 |  |  | $ | (1,354) |  |  | $ | (1,433) |  |  | $ | 303 |  |  | $ | (1,130) |
Less: reclassification adjustment of realized capital gains and losses |  | 185 |  |  | (39) |  |  | 146 |  |  | 287 |  |  | (60) |  |  | 227 |
Unrealized net capital gains and losses |  | (1,903) |  |  | 403 |  |  | (1,500) |  |  | (1,720) |  |  | 363 |  |  | (1,357) |
Unrealized foreign currency translation adjustments |  | 43 |  |  | (9) |  |  | 34 |  |  | (49) |  |  | 10 |  |  | (39) |
Unamortized pension and other postretirement prior service credit (1) |  | (19) |  |  | 4 |  |  | (15) |  |  | 6 |  |  | (2) |  |  | 4 |
Other comprehensive (loss) income |  | $ | (1,879) |  |  | $ | 398 |  |  | $ | (1,481) |  |  | $ | (1,763) |  |  | $ | 371 |  |  | $ | (1,392) |
(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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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