Guarantor Financial Information (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016	Apr. 02, 2016	Jan. 02, 2016
ASSETS
Cash and cash equivalents	$ 138,880	$ 114,564	$ 147,326	$ 156,884
Restricted cash	282	293
Accounts receivable, net	389,864	388,397
Inventories	342,114	330,815
Income taxes refundable	6,978	7,479
Prepaid expenses	32,852	29,984
Other current assets	16,331	21,770
Total current assets	927,301	893,302
Investment in subsidiaries	0	0
Property, plant and equipment, net	1,532,583	1,515,575
Intangible assets, net	697,820	711,927
Goodwill	1,233,271	1,225,893
Investment in unconsolidated subsidiaries	270,921	292,717
Other assets	42,138	43,613
Deferred income taxes	15,627	14,990
Total assets	4,719,661	4,698,017
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	24,965	23,247
Accounts payable	181,439	180,895
Income taxes payable	12,066	4,913
Accrued expenses	233,324	242,796
Total current liabilities	451,794	451,851
Long-term debt, net of current portion	1,727,496	1,727,696
Other non-current liabilities	95,720	96,114
Deferred income taxes	340,814	346,134
Total liabilities	2,615,824	2,621,795
Total stockholders’ equity	2,103,837	2,076,222
Total liabilities and stockholders' equity	4,719,661	4,698,017
Parent [Member]
ASSETS
Cash and cash equivalents	1,492	1,470	1,233	3,443
Restricted cash	103	103
Accounts receivable, net	37,683	39,209
Inventories	15,485	16,573
Income taxes refundable	3,035	3,566
Prepaid expenses	12,066	11,152
Other current assets	4,861	5,859
Total current assets	74,725	77,932
Investment in subsidiaries	4,334,518	4,296,200
Property, plant and equipment, net	240,775	233,456
Intangible assets, net	12,935	13,746
Goodwill	21,860	21,860
Investment in unconsolidated subsidiaries	3,315	1,438
Other assets	34,987	36,063
Deferred income taxes	0	0
Total assets	4,723,115	4,680,695
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	5,712	4,220
Accounts payable	174,121	116,075
Income taxes payable	2,140	(383)
Accrued expenses	64,391	86,581
Total current liabilities	246,364	206,493
Long-term debt, net of current portion	1,107,240	1,109,523
Other non-current liabilities	62,795	63,072
Deferred income taxes	135,404	140,543
Total liabilities	1,551,803	1,519,631
Total stockholders’ equity	3,171,312	3,161,064
Total liabilities and stockholders' equity	4,723,115	4,680,695
Guarantors [Member]
ASSETS
Cash and cash equivalents	2,548	5,754	2,080	3,993
Restricted cash	0	0
Accounts receivable, net	132,374	97,220
Inventories	86,262	85,890
Income taxes refundable	0	0
Prepaid expenses	2,210	2,769
Other current assets	2,568	3,165
Total current assets	225,962	194,798
Investment in subsidiaries	1,154,398	1,154,398
Property, plant and equipment, net	497,348	497,312
Intangible assets, net	283,060	291,724
Goodwill	549,956	549,960
Investment in unconsolidated subsidiaries	0	0
Other assets	396,174	396,222
Deferred income taxes	0	0
Total assets	3,106,898	3,084,414
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	0	0
Accounts payable	22,212	18,142
Income taxes payable	373	373
Accrued expenses	26,697	33,834
Total current liabilities	49,282	52,349
Long-term debt, net of current portion	0	0
Other non-current liabilities	0	0
Deferred income taxes	0	0
Total liabilities	49,282	52,349
Total stockholders’ equity	3,057,616	3,032,065
Total liabilities and stockholders' equity	3,106,898	3,084,414
Non-guarantors [Member]
ASSETS
Cash and cash equivalents	134,840	107,340	144,013	149,448
Restricted cash	179	190
Accounts receivable, net	374,206	339,251
Inventories	240,367	228,352
Income taxes refundable	3,943	3,913
Prepaid expenses	18,576	16,063
Other current assets	10,060	19,221
Total current assets	782,171	714,330
Investment in subsidiaries	909,263	909,263
Property, plant and equipment, net	794,460	784,807
Intangible assets, net	401,825	406,457
Goodwill	661,455	654,073
Investment in unconsolidated subsidiaries	267,606	291,279
Other assets	161,982	160,505
Deferred income taxes	15,627	14,990
Total assets	3,994,389	3,935,704
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	20,411	25,502
Accounts payable	134,387	130,718
Income taxes payable	9,553	4,923
Accrued expenses	147,354	125,624
Total current liabilities	311,705	286,767
Long-term debt, net of current portion	1,171,260	1,167,349
Other non-current liabilities	32,925	33,042
Deferred income taxes	205,410	205,591
Total liabilities	1,721,300	1,692,749
Total stockholders’ equity	2,273,089	2,242,955
Total liabilities and stockholders' equity	3,994,389	3,935,704
Eliminations [Member]
ASSETS
Cash and cash equivalents	0	0	$ 0	$ 0
Restricted cash	0	0
Accounts receivable, net	(154,399)	(87,283)
Inventories	0	0
Income taxes refundable	0	0
Prepaid expenses	0	0
Other current assets	(1,158)	(6,475)
Total current assets	(155,557)	(93,758)
Investment in subsidiaries	(6,398,179)	(6,359,861)
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Goodwill	0	0
Investment in unconsolidated subsidiaries	0	0
Other assets	(551,005)	(549,177)
Deferred income taxes	0	0
Total assets	(7,104,741)	(7,002,796)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	(1,158)	(6,475)
Accounts payable	(149,281)	(84,040)
Income taxes payable	0	0
Accrued expenses	(5,118)	(3,243)
Total current liabilities	(155,557)	(93,758)
Long-term debt, net of current portion	(551,004)	(549,176)
Other non-current liabilities	0	0
Deferred income taxes	0	0
Total liabilities	(706,561)	(642,934)
Total stockholders’ equity	(6,398,180)	(6,359,862)
Total liabilities and stockholders' equity	$ (7,104,741)	$ (7,002,796)