Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 02, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Disaggregation of Revenue [Line Items]
Net sales	$ 729,296	$ 634,525	$ 471,977	$ 677,459	$ 787,626	$ 724,014	$ 761,004	$ 686,802	$ 2,513,257	$ 2,959,446	$ 2,722,931
United States And Canada
Disaggregation of Revenue [Line Items]
Net sales									1,752,778	1,944,101	1,806,428
Asia
Disaggregation of Revenue [Line Items]
Net sales									189,231	258,432	224,142
Europe And Middle East
Disaggregation of Revenue [Line Items]
Net sales									508,454	647,099	601,727
Latin America
Disaggregation of Revenue [Line Items]
Net sales									62,794	109,814	90,634
Commercial Foodservice Equipment Group
Disaggregation of Revenue [Line Items]
Net sales									1,510,279	1,984,345	1,729,814
Commercial Foodservice Equipment Group | United States And Canada
Disaggregation of Revenue [Line Items]
Net sales									1,067,872	1,334,776	1,176,006
Commercial Foodservice Equipment Group | Asia
Disaggregation of Revenue [Line Items]
Net sales									155,742	221,422	180,409
Commercial Foodservice Equipment Group | Europe And Middle East
Disaggregation of Revenue [Line Items]
Net sales									246,845	349,613	315,935
Commercial Foodservice Equipment Group | Latin America
Disaggregation of Revenue [Line Items]
Net sales									39,820	78,534	57,464
Food Processing Group
Disaggregation of Revenue [Line Items]
Net sales									437,272	400,951	389,594
Food Processing Group | United States And Canada
Disaggregation of Revenue [Line Items]
Net sales									311,042	246,572	263,743
Food Processing Group | Asia
Disaggregation of Revenue [Line Items]
Net sales									26,778	31,250	36,578
Food Processing Group | Europe And Middle East
Disaggregation of Revenue [Line Items]
Net sales									78,690	98,814	64,666
Food Processing Group | Latin America
Disaggregation of Revenue [Line Items]
Net sales									20,762	24,315	24,607
Residential Kitchen
Disaggregation of Revenue [Line Items]
Net sales									565,706	574,150	603,523
Residential Kitchen | United States And Canada
Disaggregation of Revenue [Line Items]
Net sales									373,864	362,753	366,679
Residential Kitchen | Asia
Disaggregation of Revenue [Line Items]
Net sales									6,711	5,760	7,155
Residential Kitchen | Europe And Middle East
Disaggregation of Revenue [Line Items]
Net sales									182,919	198,672	221,126
Residential Kitchen | Latin America
Disaggregation of Revenue [Line Items]
Net sales									$ 2,212	$ 6,965	$ 8,563