Derivative Instruments - Summary of Change in Fair Value Reclassified or Expected to be Reclassified from Accumulated Other Comprehensive Loss to Earnings (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative [Line Items]
Amount released to pre - tax earnings	$ 4,511	$ 4,502	$ 13,863	$ 14,411
Amount released to pre - tax earnings	59,461	75,475	189,604	250,232
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member] \| Realized (Gains) Losses from Settlement of Cash Flow Hedges [Member]
Derivative [Line Items]
Amount released to pre - tax earnings	7	6	20	20
Amount released to pre - tax earnings	(17)	(59)	(187)	(196)
Foreign Currency Purchase Contracts [Member] \| Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member] \| Realized (Gains) Losses from Settlement of Cash Flow Hedges [Member]
Derivative [Line Items]
Estimated to be Reclassified in the Next 12 Months	28		28
Amount released to pre - tax earnings	7	6	20	20
Futures Contracts - Copper and Aluminum [Member] \| Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Member] \| Realized (Gains) Losses from Settlement of Cash Flow Hedges [Member]
Derivative [Line Items]
Estimated to be Reclassified in the Next 12 Months	316		316
Amount released to pre - tax earnings	$ (17)	$ (59)	$ (187)	$ (196)

Cost of product sold and service rendered, excluding depreciation, depletion, and amortization.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(2)(a))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(2)(d))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
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The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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-Publisher FASB
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