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Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Net income (loss) | $ 652 | $ (432)
Other comprehensive income (loss): |  |
Foreign currency translation adjustment | (204) | 123
Pension and other postretirement benefits: |  |
Gain arising during the period related to remeasurement due to plan amendments | 328 | 0
(Gain) loss reclassified into income related to: |  |
Net actuarial loss | 14 | 8
Prior service credit | (6) | (4)
Net gain on pension and other postretirement benefits | 336 | 4
Derivative instruments designated and qualifying as cash flow hedges: |  |
Net gain arising during the period | 1 | 47
Net gain reclassified into income | (3) | (48)
Net loss on cash flow hedges | (2) | (1)
Other comprehensive income, before income tax expense | 130 | 126
Income tax expense related to items of other comprehensive income | 117 | 1
Other comprehensive income | 13 | 125
Comprehensive income (loss) | 665 | (307)
Less: Comprehensive loss attributable to noncontrolling interests | (2) | 0
Comprehensive income (loss) attributable to Valero Energy Corporation stockholders | $ 667 | $ (307)

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