Investments in Unconsolidated Affiliates - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		57 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020
Schedule of Equity Method Investments [Line Items]
Net loss	$ 43,957	$ 30,444	$ 106,395	$ 76,259
Tecumseh Products Holdings LLC [Member]
Schedule of Equity Method Investments [Line Items]
Interest in the joint venture, ownership percentage	50.00%		50.00%		50.00%
Net loss	$ (5,500)	(1,900)	$ (20,400)	(21,800)
Second Unconsolidated Affiliate [Member]
Schedule of Equity Method Investments [Line Items]
Interest in the joint venture, ownership percentage	50.00%		50.00%		50.00%
Mueller Middle East [Member]
Schedule of Equity Method Investments [Line Items]
Interest in the joint venture, ownership percentage	40.00%		40.00%		40.00%
Net loss		$ (500)	$ 200	$ (1,900)
Cash invested to acquire joint venture interest					$ 5,000