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Consolidated Statements of Comprehensive Income - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Net income |  | $ 6 | $ 235 | $ 2,262 | $ 2,215
Cumulative translation adjustment | [1] | 114 | (125) | 187 | (1,405)
Additions and revaluations of derivatives designated as cash flow hedges | [2] | (3) | (22) | 34 | (36)
Clearance of hedge results to earnings |  | 0 | 0 | 18 | 12
Net revaluation and clearance of cash flow hedges to earnings |  | (3) | (22) | 52 | (24)
Net unrealized gain on securities |  | 5 | 0 | 11 | 0
Other comprehensive income (loss), before tax |  | 123 | 380 | (2,044) | (511)
Income tax (expense) benefit related to items of other comprehensive income (loss) |  | (33) | (176) | 773 | (312)
Other comprehensive income (loss), net of tax |  | 90 | 204 | (1,271) | (823)
Comprehensive income |  | 96 | 439 | 991 | 1,392
Less: comprehensive income attributable to noncontrolling interests |  | 4 | 0 | 14 | 9
Comprehensive income attributable to DuPont |  | 92 | 439 | 977 | 1,383
Pension Plans [Member] |  |  |  |  |
Net (loss) gain | [2] | (228) | 634 | (2,700) | 628
Effect of foreign exchange rates | [2] | 4 | 54 | 36 | 92
Amortization of prior service benefit | [3] | (2) | (3) | (5) | (6)
Amortization of loss | [3] | 229 | 172 | 605 | 591
Curtailment / settlement loss (gain), net |  | 21 | 37 | 125 | 46
Benefit plans, net |  | 24 | 894 | (1,939) | 1,351
Other Long-Term Employee Benefit Plans [Member] |  |  |  |  |
Net (loss) gain | [2] | 0 | (73) | (265) | (73)
Effect of foreign exchange rates | [2] | (2) | (1) | (2) | (1)
Amortization of prior service benefit | [3] | (36) | (39) | (111) | (143)
Amortization of loss | [3] | 21 | 20 | 56 | 58
Curtailment / settlement loss (gain), net |  | 0 | (274) | (33) | (274)
Benefit plans, net |  | $ (17) | $ (367) | $ (355) | $ (433)
[1] | The currency translation gain for the three and nine months ended September 30, 2016 is primarily driven by the modest weakening of the U.S. dollar (USD) against the European Euro (EUR) and the Brazilian real (BRL). The currency translation loss for the three months ended September 30, 2015 was driven by the strengthening of the USD against the BRL partially offset by the USD weakening against the EUR. The currency translation loss for the nine months ended September 30, 2015 was driven by the strengthening of the USD against both the BRL and the EURO.
[2] | These amounts represent changes in accumulated other comprehensive loss excluding changes due to reclassifying amounts to the interim Consolidated Income Statements. See Notes 13 and 14 for additional information.
[3] | These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost of the company's pension and other long-term employee benefit plans. See Note 14 for additional information.

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