Guarantor Financial Information Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 30, 2018	Dec. 29, 2018	Oct. 05, 2018	May 31, 2018	Dec. 30, 2017	Dec. 31, 2016
Assets:
Cash and cash equivalents	$ 72,935		$ 107,262
Restricted cash	110		107
Accounts receivable, net	406,338		385,737
Inventories	362,957		341,028
Income taxes refundable	3,317		6,462
Prepaid expenses	46,599		35,247
Other current assets	25,032		22,099
Total current assets	917,288		897,942
Investment in subsidiaries	0		0
Property, plant and equipment, net	1,802,411		1,687,858
Intangible assets, net	526,394		595,862
Goodwill	1,223,291		1,229,159	$ 8,400	$ 19,600	$ 1,301,093
Investment in unconsolidated subsidiaries	689,354		410,177
Operating right-of-use assets, net	124,726	$ 135,700	0
Other assets	47,400		53,375
Non-current deferred tax asset	14,394		14,981
Total assets	5,345,258		4,889,354
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	90,996		7,492
Accounts payable, principally trade	239,252		219,479
Income taxes payable	8,895		4,043
Operating lease liability, current	37,805		0
Accrued expenses	311,391		309,484
Total current liabilities	688,339		540,498
Long-term debt, net of current portion	1,558,429		1,666,940
Operating lease liability, non-current	91,424		0
Other noncurrent liabilities	115,785		115,032
Deferred income taxes	247,931		231,063
Total liabilities	2,701,908		2,553,533
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	2,643,350		2,335,821			$ 2,327,697	$ 2,076,222
Total liabilities and stockholders' equity	5,345,258		4,889,354
Parent Company [Member]
Assets:
Cash and cash equivalents	551		995
Restricted cash	103		103
Accounts receivable, net	51,097		56,113
Inventories	26,893		23,752
Income taxes refundable	1,106		2,851
Prepaid expenses	20,888		12,890
Other current assets	5,399		2,680
Total current assets	106,037		99,384
Investment in subsidiaries	5,365,956		4,880,193
Property, plant and equipment, net	434,237		375,824
Intangible assets, net	44,404		50,132
Goodwill	49,902		49,506
Investment in unconsolidated subsidiaries	0		13,969
Operating right-of-use assets, net	74,005
Other assets	35,456		39,395
Non-current deferred tax asset	0		0
Total assets	6,109,997		5,508,403
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	40,916		3,558
Accounts payable, principally trade	893,490		783,406
Income taxes payable	(10)		(10)
Operating lease liability, current	20,454
Accrued expenses	116,758		107,572
Total current liabilities	1,071,608		894,526
Long-term debt, net of current portion	1,040,974		1,019,130
Operating lease liability, non-current	58,970
Other noncurrent liabilities	80,409		78,589
Deferred income taxes	122,109		95,710
Total liabilities	2,374,070		2,087,955
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,735,927		3,420,448
Total liabilities and stockholders' equity	6,109,997		5,508,403
Guarantors [Member]
Assets:
Cash and cash equivalents	26		32
Restricted cash	0		0
Accounts receivable, net	702,945		619,628
Inventories	86,609		83,261
Income taxes refundable	0		0
Prepaid expenses	2,241		2,936
Other current assets	(2,326)		(1,418)
Total current assets	789,495		704,439
Investment in subsidiaries	1,366,635		1,366,126
Property, plant and equipment, net	524,577		503,130
Intangible assets, net	170,581		200,936
Goodwill	490,748		490,748
Investment in unconsolidated subsidiaries	0		0
Operating right-of-use assets, net	31,243
Other assets	134		138
Non-current deferred tax asset	0		0
Total assets	3,373,413		3,265,517
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	10		5
Accounts payable, principally trade	29,535		24,388
Income taxes payable	0		0
Operating lease liability, current	10,510
Accrued expenses	32,861		33,387
Total current liabilities	72,916		57,780
Long-term debt, net of current portion	30		18
Operating lease liability, non-current	20,281
Other noncurrent liabilities	0		0
Deferred income taxes	0		0
Total liabilities	93,227		57,798
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,280,186		3,207,719
Total liabilities and stockholders' equity	3,373,413		3,265,517
Non-guarantors [Member]
Assets:
Cash and cash equivalents	72,358		106,235
Restricted cash	7		4
Accounts receivable, net	518,614		461,005
Inventories	249,455		234,015
Income taxes refundable	2,211		3,611
Prepaid expenses	23,470		19,421
Other current assets	40,872		20,837
Total current assets	906,987		845,128
Investment in subsidiaries	844,043		844,044
Property, plant and equipment, net	843,597		808,904
Intangible assets, net	311,409		344,794
Goodwill	682,641		688,905
Investment in unconsolidated subsidiaries	689,354		396,208
Operating right-of-use assets, net	19,478
Other assets	61,974		13,842
Non-current deferred tax asset	14,394		14,981
Total assets	4,373,877		3,956,806
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	68,983		3,929
Accounts payable, principally trade	182,484		162,678
Income taxes payable	8,905		4,053
Operating lease liability, current	6,841
Accrued expenses	161,833		168,541
Total current liabilities	429,046		339,201
Long-term debt, net of current portion	567,589		647,792
Operating lease liability, non-current	12,173
Other noncurrent liabilities	35,376		36,443
Deferred income taxes	125,822		135,353
Total liabilities	1,170,006		1,158,789
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,203,871		2,798,017
Total liabilities and stockholders' equity	4,373,877		3,956,806
Consolidation, Eliminations [Member]
Assets:
Operating right-of-use assets, net	0
LIABILITIES AND STOCKHOLDERS’ EQUITY
Operating lease liability, current	0
Operating lease liability, non-current	0
Consolidation, Eliminations [Member]
Assets:
Cash and cash equivalents	0		0
Restricted cash	0		0
Accounts receivable, net	(866,318)		(751,009)
Inventories	0		0
Income taxes refundable	0		0
Prepaid expenses	0		0
Other current assets	(18,913)		0
Total current assets	(885,231)		(751,009)
Investment in subsidiaries	(7,576,634)		(7,090,363)
Property, plant and equipment, net	0		0
Intangible assets, net	0		0
Goodwill	0		0
Investment in unconsolidated subsidiaries	0		0
Other assets	(50,164)		0
Non-current deferred tax asset	0		0
Total assets	(8,512,029)		(7,841,372)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current portion of long-term debt	(18,913)		0
Accounts payable, principally trade	(866,257)		(750,993)
Income taxes payable	0		0
Accrued expenses	(61)		(16)
Total current liabilities	(885,231)		(751,009)
Long-term debt, net of current portion	(50,164)		0
Other noncurrent liabilities	0		0
Deferred income taxes	0		0
Total liabilities	(935,395)		(751,009)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(7,576,634)		(7,090,363)
Total liabilities and stockholders' equity	$ (8,512,029)		$ (7,841,372)