Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for Sveba Dahlen Acquisition - USD ($) $ in Thousands		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2018	Jul. 01, 2017	Dec. 30, 2017
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		$ 1,415,669	$ 1,432,093
Payments to Acquire Businesses, Net of Cash Acquired		1,144,541	$ 119,262
Goodwill		1,824,755		$ 1,264,810
Sveba Dahlen [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	$ 8,377
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	4,569
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	21,689
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	8,697
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent	7,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	900
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	34,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	12,124
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	(140)
Payments to Acquire Businesses, Net of Cash Acquired	81,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	1,767
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	890
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt	(14)
Goodwill	38,115
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	85,938
Scenario, Previously Reported [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	7,751
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	4,569
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	22,686
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	9,128
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	34,175
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	11,782
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	42
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	1,170
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt	0
Goodwill	33,785
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	85,938
Scenario, Adjustment [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Net	626
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	(997)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	(431)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	225
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	342
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	(140)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	1,725
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	(280)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt	(14)
Goodwill	4,330
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	0
Commercial Foodservice Equipment Group [Member]
Business Acquisition [Line Items]
Goodwill		$ 1,179,697		$ 631,451
Commercial Foodservice Equipment Group [Member] | Trade Names [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	21,100
Backlog [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 500
Backlog [Member] | Commercial Foodservice Equipment Group [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 months
Customer Relationships [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 12,800
Customer Relationships [Member] | Commercial Foodservice Equipment Group [Member] | Sveba Dahlen [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 years