Acquisitions and Purchase Accounting Acquisitions and Purchase Accounting - QualServ (Details) - USD ($) $ in Thousands		12 Months Ended
	Aug. 31, 2017	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Business Acquisition [Line Items]
Goodwill		$ 1,264,810	$ 1,092,722	$ 983,339
Payments to Acquire Businesses, Net of Cash Acquired		305,251	210,921	348,625
QualServ [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	$ 4,785
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	1,130
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	17,967
Goodwill	14,785
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	9,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(6,941)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	41,326
Payments to Acquire Businesses, Net of Cash Acquired	40,200
Scenario, Previously Reported [Member] | QualServ [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	4,785
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	1,130
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	18,031
Goodwill	14,590
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	9,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(6,810)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	41,326
Scenario, Adjustment [Member] | QualServ [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	(64)
Goodwill	195
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(131)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	0
Customer Relationships [Member] | QualServ [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 3,300
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 years
Backlog [Member] | QualServ [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 100
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 months
Commercial Foodservice Equipment Group [Member]
Business Acquisition [Line Items]
Goodwill		$ 631,451	$ 542,090	$ 473,127
Commercial Foodservice Equipment Group [Member] | Trade Names [Member] | QualServ [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 6,200