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Other Comprehensive Income | 12 Months Ended
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Dec. 31, 2017
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Other Comprehensive Income |
Note 20 | Other Comprehensive Income
Components of other comprehensive income (loss) on a pre-tax and after-tax basis
|  | For the years ended December 31,
($ in millions) |  | 2017 |  | 2016 |  | 2015
|  | Pre-tax |  | Tax |  | After-tax |  | Pre-tax |  | Tax |  | After-tax |  | Pre-tax |  | Tax |  | After-tax
Unrealized net holding gains and losses arising during the period, net of related offsets |  | $ | 866 |  |  | $ | (304 | ) |  | $ | 562 |  |  | $ | 486 |  |  | $ | (170 | ) |  | $ | 316 |  |  | $ | (1,896 | ) |  | $ | 663 |  |  | $ | (1,233 | )
Less: reclassification adjustment of realized capital gains and losses |  | 374 |  |  | (131 | ) |  | 243 |  |  | (180 | ) |  | 63 |  |  | (117 | ) |  | 112 |  |  | (39 | ) |  | 73 |
Unrealized net capital gains and losses |  | 492 |  |  | (173 | ) |  | 319 |  |  | 666 |  |  | (233 | ) |  | 433 |  |  | (2,008 | ) |  | 702 |  |  | (1,306 | )
Unrealized foreign currency translation adjustments |  | 72 |  |  | (25 | ) |  | 47 |  |  | 15 |  |  | (5 | ) |  | 10 |  |  | (89 | ) |  | 31 |  |  | (58 | )
Unrecognized pension and other postretirement benefit cost arising during the period |  | 232 |  |  | (79 | ) |  | 153 |  |  | (263 | ) |  | 94 |  |  | (169 | ) |  | (64 | ) |  | 25 |  |  | (39 | )
Less: reclassification adjustment of net periodic cost recognized in operating costs and expenses |  | (237 | ) |  | 83 |  |  | (154 | ) |  | (100 | ) |  | 35 |  |  | (65 | ) |  | (134 | ) |  | 47 |  |  | (87 | )
Unrecognized pension and other postretirement benefit cost |  | 469 |  |  | (162 | ) |  | 307 |  |  | (163 | ) |  | 59 |  |  | (104 | ) |  | 70 |  |  | (22 | ) |  | 48 |
Other comprehensive income (loss) |  | $ | 1,033 |  |  | $ | (360 | ) |  | $ | 673 |  |  | $ | 518 |  |  | $ | (179 | ) |  | $ | 339 |  |  | $ | (2,027 | ) |  | $ | 711 |  |  | $ | (1,316 | )

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- References No definition available. + Details
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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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Namespace Prefix: | us-gaap_
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