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Other Comprehensive Income (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Pre-tax |  |
Other comprehensive income (loss) | $ 1,227 | $ (737)
Tax |  |
Other comprehensive income (loss) | (260) | 156
After-tax |  |
Other comprehensive income (loss) | 967 | (581)
Unrealized net holding gains and losses arising during the period, net of related offsets |  |
Pre-tax |  |
Unrealized net holding during the period | 1,287 | (740)
Less: reclassification adjustment | 51 | (25)
Other comprehensive income (loss) | 1,236 | (715)
Tax |  |
Unrealized net holding during the period | (273) | 155
Less: reclassification adjustment | (11) | 5
Other comprehensive income (loss) | (262) | 150
After-tax |  |
Unrealized net holding during the period | 1,014 | (585)
Less: reclassification adjustment | 40 | (20)
Other comprehensive income (loss) | 974 | (565)
Unrealized foreign currency translation adjustments |  |
Pre-tax |  |
Other comprehensive income (loss) | 6 | (3)
Tax |  |
Other comprehensive income (loss) | (1) | 1
After-tax |  |
Other comprehensive income (loss) | 5 | (2)
Unamortized pension and other postretirement prior service credit |  |
Pre-tax |  |
Unrealized net holding during the period | 0 | 0
Less: reclassification adjustment | 15 | 19
Other comprehensive income (loss) | (15) | (19)
Tax |  |
Unrealized net holding during the period | 0 | 0
Less: reclassification adjustment | (3) | (5)
Other comprehensive income (loss) | 3 | 5
After-tax |  |
Unrealized net holding during the period | 0 | 0
Less: reclassification adjustment | 12 | 14
Other comprehensive income (loss) | $ (12) | $ (14)

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