| Other Comprehensive Income (Loss) |
Other Comprehensive Income (Loss) The changes in the balances of each component of Accumulated Other Comprehensive Income ("AOCI") for the years ended December 31, 2017 and 2016, including amounts reclassified out of AOCI, are as follows: | | | | | | | | | | | | | | | | | (In millions of dollars) | Unrealized Investment Gains (Losses) | | Pension/Post-Retirement Plans Gains (Losses) | | Foreign Currency Translation Adjustments | | Total | Balance as of January 1, 2017 | $ | 19 |
| | $ | (3,232 | ) | | $ | (1,880 | ) | | $ | (5,093 | ) | Other comprehensive (loss) income before reclassifications | (5 | ) | | 160 |
| | 715 |
| | 870 |
| Amounts reclassified from accumulated other comprehensive loss | — |
| | 180 |
| | — |
| | 180 |
| Net current period other comprehensive (loss) income | (5 | ) | | 340 |
| | 715 |
| | 1,050 |
| Balance as of December 31, 2017 | $ | 14 |
| | $ | (2,892 | ) | | $ | (1,165 | ) | | $ | (4,043 | ) |
| | | | | | | | | | | | | | | | | (In millions of dollars) | Unrealized Investment Gains | | Pension/Post-Retirement Plans Gains (Losses) | | Foreign Currency Translation Adjustments | | Total | Balance as of January 1, 2016 | $ | 6 |
| | $ | (3,124 | ) | | $ | (1,102 | ) | | $ | (4,220 | ) | Other comprehensive income (loss) before reclassifications | 13 |
| | (294 | ) | | (778 | ) | | (1,059 | ) | Amounts reclassified from accumulated other comprehensive loss | — |
| | 186 |
| | — |
| | 186 |
| Net current period other comprehensive income (loss) | 13 |
| | (108 | ) | | (778 | ) | | (873 | ) | Balance as of December 31, 2016 | $ | 19 |
| | $ | (3,232 | ) | | $ | (1,880 | ) | | $ | (5,093 | ) |
The components of other comprehensive income (loss) are as follows: | | | | | | | | | | | For the Years Ended December 31, | 2017 | (In millions of dollars) | Pre-Tax | Tax (Credit) | Net of Tax | Foreign currency translation adjustments | $ | 717 |
| $ | 2 |
| $ | 715 |
| Unrealized investment losses | (7 | ) | (2 | ) | (5 | ) | Pension/post-retirement plans: | | | | Amortization of losses included in net periodic pension cost: | | | | Prior service credits (a) | (1 | ) | — |
| (1 | ) | Net actuarial losses (a) | 167 |
| 30 |
| 137 |
| Effect of curtailment (a) | (1 | ) | — |
| (1 | ) | Effect of settlement (a) | 54 |
| 9 |
| 45 |
| Subtotal | 219 |
| 39 |
| 180 |
| Net gains arising during period | 374 |
| 62 |
| 312 |
| Foreign currency translation adjustments | (201 | ) | (36 | ) | (165 | ) | Other adjustments | 16 |
| 3 |
| 13 |
| Pension/post-retirement plans gains | 408 |
| 68 |
| 340 |
| Other comprehensive income | $ | 1,118 |
| $ | 68 |
| $ | 1,050 |
|
(a) Components of net periodic pension cost are included in compensation and benefits in the Consolidated Statements of Income. Tax on prior service gains and net actuarial losses is included in income tax expense. | | | | | | | | | | | For the Years Ended December 31, | 2016 | (In millions of dollars) | Pre-Tax | Tax (Credit) | Net of Tax | Foreign currency translation adjustments | $ | (742 | ) | $ | 36 |
| $ | (778 | ) | Unrealized investment gains | 21 |
| 8 |
| 13 |
| Pension/post-retirement plans: | | | | Amortization of losses included in net periodic pension cost: | | | | Prior service losses (a) | 3 |
| 1 |
| 2 |
| Net actuarial losses (a) | 166 |
| 46 |
| 120 |
| Subtotal | 169 |
| 47 |
| 122 |
| Effect of curtailment | 102 |
| 38 |
| 64 |
| Net losses arising during period | (855 | ) | (175 | ) | (680 | ) | Foreign currency translation adjustments | 416 |
| 70 |
| 346 |
| Other adjustments | 49 |
| 9 |
| 40 |
| Pension/post-retirement plans losses | (119 | ) | (11 | ) | (108 | ) | Other comprehensive (loss) income | $ | (840 | ) | $ | 33 |
| $ | (873 | ) |
(a) Components of net periodic pension cost are included in compensation and benefits in the Consolidated Statements of Income. Tax on prior service gains and net actuarial losses is included in income tax expense. | | | | | | | | | | | For the Years Ended December 31, | 2015 | (In millions of dollars) | Pre-Tax | Tax (Credit) | Net of Tax | Foreign currency translation adjustments | $ | (639 | ) | $ | 4 |
| $ | (643 | ) | Unrealized investment gains | 1 |
| — |
| 1 |
| Pension/post-retirement plans: | | | | Amortization of (gains) losses included in net periodic pension cost: | | | | Prior service credits (a) | (1 | ) | — |
| (1 | ) | Net actuarial losses (a) | 271 |
| 96 |
| 175 |
| Subtotal | 270 |
| 96 |
| 174 |
| Effect of curtailment | (3 | ) | — |
| (3 | ) | Plan Termination | (6 | ) | (3 | ) | (3 | ) | Net losses arising during period | (125 | ) | (62 | ) | (63 | ) | Foreign currency translation adjustments | 214 |
| 43 |
| 171 |
| Other | (13 | ) | (6 | ) | (7 | ) | Pension/post-retirement plans gains | 337 |
| 68 |
| 269 |
| Other comprehensive (loss) income | $ | (301 | ) | $ | 72 |
| $ | (373 | ) |
(a) Components of net periodic pension cost are included in compensation and benefits in the Consolidated Statements of Income. Tax on prior service gains and net actuarial losses is included in income tax expense. The components of accumulated other comprehensive income (loss) are as follows: | | | | | | | | | (In millions of dollars) | December 31, 2017 |
| | December 31, 2016 |
| Foreign currency translation adjustments (net of deferred tax adjustments of $(11) in 2017 and deferred tax adjustments of $(9) in 2016, respectively) | $ | (1,165 | ) | | $ | (1,880 | ) | Net unrealized investment gains (net of deferred tax liability of $7 in 2017 and $10 in 2016) | 14 |
| | 19 |
| Net charges related to pension/post-retirement plans (net of deferred tax asset of $1,462 and $1,530 in 2017 and 2016, respectively) | (2,892 | ) | | (3,232 | ) | | $ | (4,043 | ) | | $ | (5,093 | ) |
|