Supplemental Guarantor Information (Details) (USD $) In Thousands	Oct. 02, 2011	Dec. 31, 2010	Oct. 03, 2010	Dec. 31, 2009
Current assets:
Cash and cash equivalents	$ 348,190	$ 358,653	$ 296,081	$ 308,879
Receivables, net	349,247	298,266
Inventories, net	197,100	175,659
Deferred income taxes	9,659	9,473
Other current assets	21,847	18,804
Total current assets	926,043	860,855
Property, plant and equipment, less accumulated depreciation	283,992	278,866
Goodwill	352,847	322,556
Intangible assets, less accumulated amortization	156,396	143,820
Deferred income taxes	20,997	27,565
Other long-lived assets	70,377	62,822
Investment in subsidiaries	0	0
Total assets	1,810,652	1,696,484
Current liabilities:
Accounts payable	233,989	212,084
Accrued liabilities	166,529	145,840
Total current liabilities	400,518	357,924
Long-term debt	550,955	551,155
Postretirement benefits	116,926	112,426
Other long-term liabilities	32,539	36,464
Intercompany accounts	0	0
Total stockholders' equity	709,714	638,515
Total liabilities and stockholders' equity	1,810,652	1,696,484
Issuer [Member]
Current assets:
Cash and cash equivalents	72,858	173,699	109,027	58,855
Receivables, net	141,702	117,303
Inventories, net	108,578	109,127
Deferred income taxes	7,745	5,590
Other current assets	9,773	10,199
Total current assets	340,656	415,918
Property, plant and equipment, less accumulated depreciation	124,694	120,857
Goodwill	220,842	258,094
Intangible assets, less accumulated amortization	66,582	93,695
Deferred income taxes	7,249	9,342
Other long-lived assets	13,863	12,771
Investment in subsidiaries	1,303,682	1,227,959
Total assets	2,077,568	2,138,636
Current liabilities:
Accounts payable	98,804	92,996
Accrued liabilities	77,265	78,013
Total current liabilities	176,069	171,009
Long-term debt	550,955	551,155
Postretirement benefits	30,670	27,949
Other long-term liabilities	22,227	30,047
Intercompany accounts	(39,565)	(249,051)
Total stockholders' equity	1,337,212	1,607,527
Total liabilities and stockholders' equity	2,077,568	2,138,636
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	275,332	184,954	187,054	250,024
Receivables, net	207,545	180,963
Inventories, net	88,522	66,532
Deferred income taxes	1,914	3,883
Other current assets	12,074	8,605
Total current assets	585,387	444,937
Property, plant and equipment, less accumulated depreciation	159,298	158,009
Goodwill	132,005	64,462
Intangible assets, less accumulated amortization	89,814	50,125
Deferred income taxes	13,748	18,223
Other long-lived assets	56,514	50,051
Investment in subsidiaries	0	0
Total assets	1,036,766	785,807
Current liabilities:
Accounts payable	135,185	119,088
Accrued liabilities	89,264	67,827
Total current liabilities	224,449	186,915
Long-term debt	0	0
Postretirement benefits	86,256	84,477
Other long-term liabilities	10,312	6,417
Intercompany accounts	39,565	249,051
Total stockholders' equity	676,184	258,947
Total liabilities and stockholders' equity	1,036,766	785,807
Eliminations [Member]
Current assets:
Cash and cash equivalents	0	0
Receivables, net	0	0
Inventories, net	0	0
Deferred income taxes	0	0
Other current assets	0	0
Total current assets	0	0
Property, plant and equipment, less accumulated depreciation	0	0
Goodwill	0	0
Intangible assets, less accumulated amortization	0	0
Deferred income taxes	0	0
Other long-lived assets	0	0
Investment in subsidiaries	(1,303,682)	(1,227,959)
Total assets	(1,303,682)	(1,227,959)
Current liabilities:
Accounts payable	0	0
Accrued liabilities	0	0
Total current liabilities	0	0
Long-term debt	0	0
Postretirement benefits	0	0
Other long-term liabilities	0	0
Intercompany accounts	0	0
Total stockholders' equity	(1,303,682)	(1,227,959)
Total liabilities and stockholders' equity	$ (1,303,682)	$ (1,227,959)