Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 261,058	$ 286,953	$ 244,859
Work-in-process	148,034	134,417	135,685
Finished goods	432,085	355,337	418,702
Other	13,126	12,793	12,850
Inventory, Gross, Total	854,303	789,500	812,096
Adjustment to value inventory at cost on the LIFO method	(156,495)	(156,495)	(125,883)
Inventories	$ 697,808	$ 633,005	$ 686,213

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of other inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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