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Reclassification Adjustments Out of Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Other Comprehensive Income Loss Reclassification Adjustments [Line Items] |  |  |  |  |  |
Interest expense, net | $ (9,232) |  | $ (13,256) | $ (18,483) |  | $ (22,939)
Cost of sales | (608,107) |  | (554,360) | (1,180,883) |  | (1,080,698)
Income before taxes | 98,038 |  | 70,602 | 192,033 |  | 230,029
Provision for income taxes | (33,573) |  | (25,448) | (66,955) |  | (167,031)
Net income | 64,465 |  | 45,154 | 125,078 |  | 62,998
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) From Designated Or Qualifying Cash Flow Hedges | Treasury Lock |  |  |  |  |  |
Other Comprehensive Income Loss Reclassification Adjustments [Line Items] |  |  |  |  |  |
Interest expense, net | (1,414) | [1] |  | (2,827) | [1] |
Provision for income taxes | 549 |  |  | 1,098 |  |
Net income | (865) |  |  | (1,729) |  |
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) From Designated Or Qualifying Cash Flow Hedges | Foreign Exchange Contract |  |  |  |  |  |
Other Comprehensive Income Loss Reclassification Adjustments [Line Items] |  |  |  |  |  |
Cost of sales | (9) | [2] |  | (17) | [2] |
Provision for income taxes | 4 |  |  | 7 |  |
Net income | (5) |  |  | (10) |  |
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment |  |  |  |  |  |
Other Comprehensive Income Loss Reclassification Adjustments [Line Items] |  |  |  |  |  |
Amortization of prior service costs | (1,454) | [3] |  | (2,908) | [3] |
Curtailment loss | (7,776) | [3] |  | (7,776) | [3] |
Amortization of actuarial gains / (losses) | (1,636) | [3] |  | (3,271) | [3] |
Income before taxes | (10,866) |  |  | (13,955) |  |
Provision for income taxes | 4,221 |  |  | 5,421 |  |
Net income | $ (6,645) |  |  | $ (8,534) |  |
[1] | This AOCI component is included in interest expense, net. See Note 10 for additional information.
[2] | This AOCI component is included as depreciation in cost of sales.
[3] | These AOCI components are included in the computation of net pension and postretirement costs. See Note 8 for additional information.

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