Consolidated Statements Of Shareholders' Equity (Parenthetical) - USD ($) $ in Millions |
12 Months Ended | ||
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Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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Other Comprehensive Income (Loss), Available-for-sale Securities, before Reclassification Adjustments, Tax | $ (228) | $ 72 | $ 154 |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax | (13) | 28 | (2) |
Net unrealized appreciation on investments, Change in year, income tax (expense) benefit | (241) | 100 | 152 |
Cumulative translation adjustment, Change in year, income tax(expense) benefit | 5 | 30 | 0 |
Pension liability adjustment, Change in year, income tax (expense) benefit | $ 5 | $ (184) | $ (6) |
X | ||||||||||
- Definition Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities and unrealized holding gain (loss) related to transfers of securities into the available-for-sale category and out of the held-to-maturity category. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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