| | | | Tax | | |
| | | | (Expense) | After- |
| (In millions) | Pre-Tax | Benefit | Tax |
| Three Months Ended March 31, | | | | | | |
| 2015 | | | | | | |
| Net unrealized appreciation, securities, January 1, | $ | 955 | $ | (335) | $ | 620 |
| Net unrealized appreciation on securities arising during the period | | 148 | | (47) | | 101 |
| Reclassification adjustment for (gains) included in shareholders' net income (realized investment gains) | | (20) | | 7 | | (13) |
| Net unrealized appreciation, securities arising during the period | | 128 | | (40) | | 88 |
| Net unrealized appreciation, securities, March 31, | $ | 1,083 | $ | (375) | $ | 708 |
| Net unrealized depreciation, derivatives, January 1, | $ | (12) | $ | 4 | $ | (8) |
| Net unrealized appreciation, derivatives arising during the period | | 10 | | (3) | | 7 |
| Net unrealized depreciation, derivatives, March 31, | $ | (2) | $ | 1 | $ | (1) |
| Net translation of foreign currencies, January 1, | $ | (71) | $ | 9 | $ | (62) |
| Net translation of foreign currencies arising during the period | | (109) | | 5 | | (104) |
| Net translation of foreign currencies, March 31, | $ | (180) | $ | 14 | $ | (166) |
| Postretirement benefits liability adjustment, January 1, | $ | (2,286) | $ | 800 | $ | (1,486) |
| Reclassification adjustment for amortization of net losses from past | | | | | | |
| experience and prior service costs (other operating expenses) | | 16 | | (5) | | 11 |
| Postretirement benefits liability adjustment, March 31, | $ | (2,270) | $ | 795 | $ | (1,475) |
| | | | | | | |
| 2014 | | | | | | |
| Net unrealized appreciation, securities, January 1, | $ | 733 | $ | (256) | $ | 477 |
| Net unrealized appreciation on securities arising during the period | | 156 | | (54) | | 102 |
| Reclassification adjustment for (gains) included in shareholders' net income (realized investment gains) | | (25) | | 9 | | (16) |
| Net unrealized appreciation, securities arising during the period | | 131 | | (45) | | 86 |
| Net unrealized appreciation, securities, March 31, | $ | 864 | $ | (301) | $ | 563 |
| Net unrealized depreciation, derivatives, January 1, | $ | (29) | $ | 10 | $ | (19) |
| Net unrealized depreciation, derivatives arising during the period | | - | | - | | - |
| Net unrealized depreciation, derivatives, March 31, | $ | (29) | $ | 10 | $ | (19) |
| Net translation of foreign currencies, January 1, | $ | 91 | $ | (9) | $ | 82 |
| Net translation of foreign currencies arising during the period | | (13) | | 2 | | (11) |
| Net translation of foreign currencies, March 31, | $ | 78 | $ | (7) | $ | 71 |
| Postretirement benefits liability adjustment, January 1, | $ | (1,630) | $ | 570 | $ | (1,060) |
| Reclassification adjustment for amortization of net losses from past | | | | | | |
| experience and prior service costs (other operating expenses) | | 13 | | (5) | | 8 |
| Reclassification adjustment for settlement (other operating expenses) | | 6 | | (2) | | 4 |
| Total reclassification adjustments to shareholders' net income (other operating expenses) | | 19 | | (7) | | 12 |
| Postretirement benefits liability adjustment, March 31, | $ | (1,611) | $ | 563 | $ | (1,048) |