Segment Information - Results of Business Segments (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 29, 2018		Dec. 30, 2017		Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales		$ 756,672	$ 713,331	$ 668,128	$ 584,800	$ 632,859	$ 593,043	$ 579,343	$ 530,297	$ 2,722,931		$ 2,335,542		$ 2,267,852
Operating Income (Loss)		139,987	$ 107,677	$ 111,310	$ 86,992	62,904	$ 109,444	$ 113,524	$ 92,741	445,966	[1]	378,613	[1],[2],[3]	419,018	[1]
Depreciation and amortization										97,238		69,774		58,234
Net capital expenditures										36,040		54,493		24,817
Total assets		4,549,781				3,339,713				4,549,781		3,339,713		2,917,136
Long-lived assets	[4]	383,988				362,588				383,988		362,588		316,544
Commercial Foodservice Equipment Group
Segment Reporting Information [Line Items]
Net sales										1,729,814		1,382,108		1,266,955
Operating Income (Loss)	[1]									393,380		357,085	[2],[3]	350,483
Depreciation and amortization										52,598		29,981		19,548
Net capital expenditures										17,444		41,457		11,958
Total assets		2,906,373				1,693,820				2,906,373		1,693,820		1,347,441
Long-lived assets	[4]	181,636				148,565				181,636		148,565		84,475
Food Processing Group
Segment Reporting Information [Line Items]
Net sales										389,594		352,717		342,235
Operating Income (Loss)	[1]									62,435		88,121	[2],[3]	87,039
Depreciation and amortization										12,734		7,357		5,696
Net capital expenditures										7,373		5,519		5,667
Total assets		513,189				450,932				513,189		450,932		340,088
Long-lived assets	[4]	33,127				25,346				33,127		25,346		21,763
Residential Kitchen
Segment Reporting Information [Line Items]
Net sales										603,523		600,717		658,662
Operating Income (Loss)	[1]									53,959		(377)	[2],[3]	62,326
Depreciation and amortization										30,064		30,551		29,897
Net capital expenditures										11,721		7,637		6,961
Total assets		1,089,103				1,140,668				1,089,103		1,140,668		1,179,640
Long-lived assets	[4]	146,897				167,486				146,897		167,486		175,206
Corporate and Other
Segment Reporting Information [Line Items]
Net sales										0		0		0	[5]
Operating Income (Loss)	[1]									(63,808)		(66,216)	[2],[3]	(80,830)
Depreciation and amortization										1,842		1,885		3,093
Net capital expenditures										(498)		(120)		231
Total assets		41,116				54,293				41,116		54,293		49,967
Long-lived assets	[4]	$ 22,328				$ 21,191				$ 22,328		$ 21,191		$ 35,100

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

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

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

[4] Long-lived assets consist of property, plant and equipment, long-term deferred tax assets and other assets.

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