Supplemental Guarantor Information (Details) (USD $) In Thousands, unless otherwise specified	Jul. 01, 2012	Dec. 31, 2011	Jul. 03, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 337,278	$ 382,716	$ 329,312	$ 358,653
Receivables, net	322,572	299,070
Inventories, net	183,954	202,143
Deferred income taxes	20,073	19,660
Other current assets	21,013	21,832
Total current assets	884,890	925,421
Property, plant and equipment, less accumulated depreciation	287,802	286,933
Goodwill	343,795	348,032
Intangible assets, less accumulated amortization	143,513	151,683
Deferred income taxes	19,128	12,219
Other long-lived assets	65,193	63,832
Total assets	1,744,321	1,788,120
Current liabilities:
Accounts payable	214,595	227,571
Accrued liabilities	124,413	153,995
Total current liabilities	339,008	381,566
Long-term debt	550,265	550,926
Postretirement benefits	129,421	131,237
Other long-term liabilities	27,827	29,842
Total stockholders' equity	697,800	694,549
Total liabilities and stockholders' equity	1,744,321	1,788,120
Issuer [Member]
Current assets:
Cash and cash equivalents	30,489	92,586	100,925	173,699
Receivables, net	141,397	117,920
Inventories, net	106,650	125,168
Deferred income taxes	15,737	15,737
Other current assets	9,715	10,121
Total current assets	303,988	361,532
Property, plant and equipment, less accumulated depreciation	134,174	132,909
Goodwill	242,808	242,808
Intangible assets, less accumulated amortization	75,055	77,455
Deferred income taxes	(3,473)	(1,829)
Other long-lived assets	12,690	13,666
Investment in subsidiaries	1,356,804	1,306,843
Total assets	2,122,046	2,133,384
Current liabilities:
Accounts payable	80,899	94,647
Accrued liabilities	57,397	73,579
Total current liabilities	138,296	168,226
Long-term debt	550,265	550,926
Postretirement benefits	33,135	42,855
Other long-term liabilities	23,539	23,628
Intercompany accounts	(40,861)	(33,617)
Total stockholders' equity	1,417,672	1,381,366
Total liabilities and stockholders' equity	2,122,046	2,133,384
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	306,789	290,130	228,387	184,954
Receivables, net	181,175	181,150
Inventories, net	77,304	76,975
Deferred income taxes	4,336	3,923
Other current assets	11,298	11,711
Total current assets	580,902	563,889
Property, plant and equipment, less accumulated depreciation	153,628	154,024
Goodwill	100,987	105,224
Intangible assets, less accumulated amortization	68,458	74,228
Deferred income taxes	22,601	14,048
Other long-lived assets	52,503	50,166
Total assets	979,079	961,579
Current liabilities:
Accounts payable	133,696	132,924
Accrued liabilities	67,016	80,416
Total current liabilities	200,712	213,340
Postretirement benefits	96,286	88,382
Other long-term liabilities	4,288	6,214
Intercompany accounts	40,861	33,617
Total stockholders' equity	636,932	620,026
Total liabilities and stockholders' equity	979,079	961,579
Eliminations [Member]
Current assets:
Investment in subsidiaries	(1,356,804)	(1,306,843)
Total assets	(1,356,804)	(1,306,843)
Current liabilities:
Total stockholders' equity	(1,356,804)	(1,306,843)
Total liabilities and stockholders' equity	$ (1,356,804)	$ (1,306,843)