Supplemental Balance Sheet Information (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jul. 02, 2011
Inventories
Raw materials and supplies	$ 227,780	$ 219,487	$ 246,414
Work-in-process	50,860	47,707	49,515
Finished goods	181,399	182,669	188,866
Total inventories	460,039	449,863	484,795
Property, plant and equipment
Land and land improvements	40,519	41,111	43,322
Buildings and leasehold improvements	251,977	244,246	255,317
Machinery and equipment	713,819	692,930	697,802
Construction in progress	34,699	40,251	41,066
Total property, plant and equipment	1,041,014	1,018,538	1,037,507
Less accumulated depreciation and amortization	659,951	631,013	626,960
Property, plant and equipment, net	$ 381,063	$ 387,525	$ 410,547