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Other Comprehensive Income (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Pre-tax |  |  |  |
Unrealized net holding gains and losses arising during the period, net of related offsets | $ 300 | $ 350 | $ 1,165 | $ 1,685
Less: reclassification adjustment of realized capital gains and losses | 107 | 53 | 245 | (156)
Unrealized net capital gains and losses | 193 | 297 | 920 | 1,841
Unrealized foreign currency translation adjustments | 43 | (11) | 55 | 18
Unrecognized pension and other postretirement benefit cost arising during the period | (5) | 1 | (8) | (6)
Less: reclassification adjustment of net periodic cost recognized in operating costs and expenses | (116) | (30) | (174) | (78)
Unrecognized pension and other postretirement benefit cost | 111 | 31 | 166 | 72
Other comprehensive income | 347 | 317 | 1,141 | 1,931
Tax |  |  |  |
Unrealized net holding gains and losses arising during the period, net of related offsets | (105) | (123) | (408) | (589)
Less: reclassification adjustment of realized capital gains and losses | (37) | (19) | (86) | 55
Unrealized net capital gains and losses | (68) | (104) | (322) | (644)
Unrealized foreign currency translation adjustments | (15) | 4 | (19) | (6)
Unrecognized pension and other postretirement benefit cost arising during the period | 3 | 0 | 5 | 3
Less: reclassification adjustment of net periodic cost recognized in operating costs and expenses | 41 | 10 | 61 | 27
Unrecognized pension and other postretirement benefit cost | (38) | (10) | (56) | (24)
Other comprehensive income (loss), Tax | (121) | (110) | (397) | (674)
After-tax |  |  |  |
Unrealized net holding gains and losses arising during the period, net of related offsets | 195 | 227 | 757 | 1,096
Less: reclassification adjustment of realized capital gains and losses | 70 | 34 | 159 | (101)
Unrealized net capital gains and losses | 125 | 193 | 598 | 1,197
Unrealized foreign currency translation adjustments | 28 | (7) | 36 | 12
Unrecognized pension and other postretirement benefit cost arising during the period | (2) | 1 | (3) | (3)
Less: reclassification adjustment of net periodic cost recognized in operating costs and expenses | (75) | (20) | (113) | (51)
Unrecognized pension and other postretirement benefit cost | 73 | 21 | 110 | 48
Other comprehensive income, after-tax | $ 226 | $ 207 | $ 744 | $ 1,257

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