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Other Comprehensive Income (Tables) | 6 Months Ended
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Jun. 30, 2017
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Other comprehensive income (loss) on a pre-tax and after-tax basis | The components of other comprehensive income on a pre-tax and after-tax basis are as follows:
($ in millions) | Three months ended June 30,
| 2017 |  | 2016
| Pre-tax |  | Tax |  | After-tax |  | Pre-tax |  | Tax |  | After-tax
Unrealized net holding gains and losses arising during the period, net of related offsets | $ | 479 |  |  | $ | (167 | ) |  | $ | 312 |  |  | $ | 663 |  |  | $ | (232 | ) |  | $ | 431 |
Less: reclassification adjustment of realized capital gains and losses | 64 |  |  | (22 | ) |  | 42 |  |  | 11 |  |  | (4 | ) |  | 7 |
Unrealized net capital gains and losses | 415 |  |  | (145 | ) |  | 270 |  |  | 652 |  |  | (228 | ) |  | 424 |
Unrealized foreign currency translation adjustments | 17 |  |  | (6 | ) |  | 11 |  |  | 7 |  |  | (2 | ) |  | 5 |
Unrecognized pension and other postretirement benefit cost arising during the period | (3 | ) |  | 2 |  |  | (1 | ) |  | 1 |  |  | — |  |  | 1 |
Less: reclassification adjustment of net periodic cost recognized in operating costs and expenses | (29 | ) |  | 10 |  |  | (19 | ) |  | (24 | ) |  | 9 |  |  | (15 | )
Unrecognized pension and other postretirement benefit cost | 26 |  |  | (8 | ) |  | 18 |  |  | 25 |  |  | (9 | ) |  | 16 |
Other comprehensive income | $ | 458 |  |  | $ | (159 | ) |  | $ | 299 |  |  | $ | 684 |  |  | $ | (239 | ) |  | $ | 445 |
| Six months ended June 30,
| 2017 |  | 2016
| Pre-tax |  | Tax |  | After-tax |  | Pre-tax |  | Tax |  | After-tax
Unrealized net holding gains and losses arising during the period, net of related offsets | $ | 901 |  |  | $ | (315 | ) |  | $ | 586 |  |  | $ | 1,381 |  |  | $ | (483 | ) |  | $ | 898 |
Less: reclassification adjustment of realized capital gains and losses | 174 |  |  | (61 | ) |  | 113 |  |  | (163 | ) |  | 57 |  |  | (106 | )
Unrealized net capital gains and losses | 727 |  |  | (254 | ) |  | 473 |  |  | 1,544 |  |  | (540 | ) |  | 1,004 |
Unrealized foreign currency translation adjustments | 12 |  |  | (4 | ) |  | 8 |  |  | 29 |  |  | (10 | ) |  | 19 |
Unrecognized pension and other postretirement benefit cost arising during the period | (3 | ) |  | 2 |  |  | (1 | ) |  | (7 | ) |  | 3 |  |  | (4 | )
Less: reclassification adjustment of net periodic cost recognized in operating costs and expenses | (58 | ) |  | 20 |  |  | (38 | ) |  | (48 | ) |  | 17 |  |  | (31 | )
Unrecognized pension and other postretirement benefit cost | 55 |  |  | (18 | ) |  | 37 |  |  | 41 |  |  | (14 | ) |  | 27 |
Other comprehensive income | $ | 794 |  |  | $ | (276 | ) |  | $ | 518 |  |  | $ | 1,614 |  |  | $ | (564 | ) |  | $ | 1,050 |

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- References No definition available. + Details
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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e526-108580 + Details
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