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Other Comprehensive Income (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Pre-tax |  |  |  |
Unrealized net holding gains and losses arising during the period, net of related offsets | $ 479 | $ 663 | $ 901 | $ 1,381
Less: reclassification adjustment of realized capital gains and losses | 64 | 11 | 174 | (163)
Unrealized net capital gains and losses | 415 | 652 | 727 | 1,544
Unrealized foreign currency translation adjustments | 17 | 7 | 12 | 29
Unrecognized pension and other postretirement benefit cost arising during the period | (3) | 1 | (3) | (7)
Less: reclassification adjustment of net periodic cost recognized in operating costs and expenses | (29) | (24) | (58) | (48)
Unrecognized pension and other postretirement benefit cost | 26 | 25 | 55 | 41
Other comprehensive income | 458 | 684 | 794 | 1,614
Tax |  |  |  |
Unrealized net holding gains and losses arising during the period, net of related offsets | (167) | (232) | (315) | (483)
Less: reclassification adjustment of realized capital gains and losses | (22) | (4) | (61) | 57
Unrealized net capital gains and losses | (145) | (228) | (254) | (540)
Unrealized foreign currency translation adjustments | (6) | (2) | (4) | (10)
Unrecognized pension and other postretirement benefit cost arising during the period | 2 | 0 | 2 | 3
Less: reclassification adjustment of net periodic cost recognized in operating costs and expenses | 10 | 9 | 20 | 17
Unrecognized pension and other postretirement benefit cost | (8) | (9) | (18) | (14)
Other comprehensive income (loss), Tax | (159) | (239) | (276) | (564)
After-tax |  |  |  |
Unrealized net holding gains and losses arising during the period, net of related offsets | 312 | 431 | 586 | 898
Less: reclassification adjustment of realized capital gains and losses | 42 | 7 | 113 | (106)
Unrealized net capital gains and losses | 270 | 424 | 473 | 1,004
Unrealized foreign currency translation adjustments | 11 | 5 | 8 | 19
Unrecognized pension and other postretirement benefit cost arising during the period | (1) | 1 | (1) | (4)
Less: reclassification adjustment of net periodic cost recognized in operating costs and expenses | (19) | (15) | (38) | (31)
Unrecognized pension and other postretirement benefit cost | 18 | 16 | 37 | 27
Other comprehensive income, after-tax | $ 299 | $ 445 | $ 518 | $ 1,050

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