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Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Net income | $ 288 |  | $ 8 |  | $ 4,677 |  | $ 2,687 |
Cumulative translation adjustment | 177 |  | 189 |  | (46) |  | (53) |
Additions and revaluations of derivatives designated as cash flow hedges | (15) | [1] | (6) | [1] | (39) | [1] | 30 | [1]
Clearance of hedge results to earnings | 1 |  | (11) |  | (27) |  | (66) |
Net revaluation and clearance of cash flow hedges to earnings | (14) |  | (17) |  | (66) |  | (36) |
Net unrealized (loss) gain on securities | 0 |  | (5) |  | 1 |  | (3) |
Other comprehensive income (loss), before tax | 739 |  | 484 |  | 983 |  | 658 |
Income tax expense related to items of other comprehensive income | (195) |  | (126) |  | (337) |  | (266) |
Other comprehensive (loss) income, net of tax | 544 |  | 358 |  | 646 |  | 392 |
Comprehensive income | 832 |  | 366 |  | 5,323 |  | 3,079 |
Less: comprehensive income attributable to noncontrolling interests | 3 |  | 3 |  | 14 |  | 51 |
Comprehensive income attributable to DuPont | 829 |  | 363 |  | 5,309 |  | 3,028 |
Pension Plans [Member] |  |  |  |  |  |  |  |
Net gain (loss) | (4) | [1] | (609) | [1] | 52 | [1] | (628) | [1]
Prior service benefit (cost) | 62 | [1] | 0 | [1] | 62 | [1] | 22 | [1]
Amortization of prior service cost (benefit) | 2 | [2] | 3 | [2] | 8 | [2] | 10 | [2]
Amortization of (gain) loss | 244 | [2] | 222 | [2] | 724 | [2] | 661 | [2]
Curtailment / settlement loss (gain) | 0 | [2] | 2 | [2] | 153 | [2] | 2 | [2]
Benefit plans, net | 304 |  | (382) |  | 999 |  | 67 |
Other Long-Term Employee Benefit Plans Defined Benefit [Member] |  |  |  |  |  |  |  |
Net gain (loss) | 95 | [1] | (141) | [1] | 140 | [1] | (141) | [1]
Prior service benefit (cost) | 199 | [1] | 857 | [1] | 199 | [1] | 857 | [1]
Amortization of prior service cost (benefit) | (48) | [2] | (44) | [2] | (142) | [2] | (104) | [2]
Amortization of (gain) loss | 26 | [2] | 24 | [2] | 51 | [2] | 68 | [2]
Curtailment / settlement loss (gain) | 0 | [2] | 3 | [2] | (153) | [2] | 3 | [2]
Benefit plans, net | $ 272 |  | $ 699 |  | $ 95 |  | $ 683 |
[1] | These amounts represent changes in accumulated other comprehensive income excluding changes due to reclassifying amounts to the interim Consolidated Income Statements.
[2] | These accumulated other comprehensive income 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 12 for additional information.

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