Segment Information - Results of Business Segments (Details) - USD ($) $ in Thousands		3 Months Ended										12 Months Ended
		Dec. 28, 2019		Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018		Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 28, 2019		Dec. 29, 2018		Dec. 30, 2017
Segment Reporting Information [Line Items]
Net sales		$ 787,626		$ 724,014	$ 761,004	$ 686,802	$ 756,672		$ 713,331	$ 668,128	$ 584,800	$ 2,959,446		$ 2,722,931		$ 2,335,542
Operating Income (Loss)		152,030		$ 121,345	$ 139,607	$ 101,061	139,987		$ 107,677	$ 111,310	$ 86,992	514,043	[1],[2]	445,966	[2]	378,613	[2],[3],[4]
Depreciation												37,852		35,782		29,710
Amortization expense (5)	[5]											65,576		61,456		40,064
Net capital expenditures												46,609		36,040		54,493
Total assets		5,002,143					4,549,781					5,002,143		4,549,781		3,339,713
Long-lived assets	[6]	499,819					383,988					499,819		383,988		362,588
Commercial Foodservice Equipment Group
Segment Reporting Information [Line Items]
Net sales												1,984,345		1,729,814		1,382,108
Operating Income (Loss)	[2]											429,946	[1]	393,380		357,085	[3],[4]
Depreciation												21,054		17,374		12,643
Amortization expense (5)	[5]											45,906		35,224		17,338
Net capital expenditures												29,353		17,444		41,457
Total assets		3,188,304					2,906,373					3,188,304		2,906,373		1,693,820
Long-lived assets		261,466	[6]				181,636	[7]				261,466	[6]	181,636	[7]	148,565	[6]
Food Processing Group
Segment Reporting Information [Line Items]
Net sales												400,951		389,594		352,717
Operating Income (Loss)	[2]											68,935	[1]	62,435		88,121	[3],[4]
Depreciation												4,944		5,207		3,677
Amortization expense (5)	[5]											8,162		7,527		3,680
Net capital expenditures												6,683		7,373		5,519
Total assets		621,619					513,189					621,619		513,189		450,932
Long-lived assets		57,403	[6]				33,127	[7]				57,403	[6]	33,127	[7]	25,346	[6]
Residential Kitchen
Segment Reporting Information [Line Items]
Net sales												574,150		603,523		600,717
Operating Income (Loss)	[2]											89,312	[1]	53,959		(377)	[3],[4]
Depreciation												11,742		12,838		12,984
Amortization expense (5)	[5]											9,896		17,226		17,567
Net capital expenditures												9,168		11,721		7,637
Total assets		1,157,211					1,089,103					1,157,211		1,089,103		1,140,668
Long-lived assets		176,834	[6]				146,897	[7]				176,834	[6]	146,897	[7]	167,486	[6]
Corporate and Other
Segment Reporting Information [Line Items]
Net sales												0		0		0
Operating Income (Loss)	[2]											(74,150)	[1]	(63,808)		(66,216)	[3],[4]
Depreciation												112		363		406
Amortization expense (5)	[5]											1,612		1,479		1,479
Net capital expenditures												1,405		(498)		(120)
Total assets		35,009					41,116					35,009		41,116		54,293
Long-lived assets		$ 4,116	[6]				$ 22,328	[7]				$ 4,116	[6]	$ 22,328	[7]	$ 21,191	[6]

[1] Gain on litigation settlement is included in Residential Kitchen.

[2] Restructuring expenses are included in operating income of the segment to which they pertain. See note 13 for further details.

[3] Impairment of intangible assets is included in Residential Kitchen.

[4] Impairment of intangible assets is included in Residential Kitchen.

[5] Includes amortization of deferred financing costs

[6] Gain on sale of plant is included in Commercial Foodservice.

[7] Includes corporate and other general company assets and operations.