Acquisitions and Dispositions - Narrative (Details) - USD ($) $ in Thousands			3 Months Ended		9 Months Ended
	Dec. 07, 2021	Jan. 29, 2021	Sep. 24, 2022	Sep. 25, 2021	Sep. 25, 2021	Dec. 25, 2021	Oct. 25, 2021	Sep. 02, 2021	Jul. 28, 2021
Business Acquisition [Line Items]
Goodwill, net			$ 156,938			$ 171,330
Mueller Middle East
Business Acquisition [Line Items]
Interest in the joint venture, ownership percentage	15.00%
Mueller Middle East | Corporate Joint Venture
Business Acquisition [Line Items]
Interest in the joint venture, ownership percentage	40.00%
Retail Distribution Business
Business Acquisition [Line Items]
Interest in the joint venture, ownership percentage								17.00%
Copper Bar | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Consideration for sale of businesses							$ 10,100
Assets of disposed business							$ 3,600
Net sales of disposed of business				$ 14,800	$ 39,600
Disposal group, including discontinued operation, operating income (loss)				(100)	100
Die-Mold | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Consideration for sale of businesses								$ 22,800
Net sales of disposed of business				3,000	10,900
Net income of disposed business				800	2,200
Gain (loss) on disposal of businesses				4,700
Fabricated Tube Products and Shoals Tubular, Inc. | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Consideration for sale of businesses									$ 75,700
Assets of disposed business									32,700
Net sales of disposed of business				5,100	37,000
Net income of disposed business				500	$ 5,400
Gain (loss) on disposal of businesses				$ 46,600
Liabilities of disposed business									$ 3,600
Mueller Middle East
Business Acquisition [Line Items]
Ownership interest acquired (as a percent)	55.00%
Consideration transferred net of working capital adjustments	$ 20,100
Cash portion of acquisition price	15,800
Debt assumed	2,600
Payment for contingent consideration	1,000
Equity interest issued or issuable	700
Fair value of assets acquired	44,800
Fair value of property, plant and equipment acquired	26,700
Fair value of accounts receivable acquired	10,700
Fair value of inventories acquired	4,700
Business combination, recognized identifiable assets acquired and liabilities assumed, current assets, other	2,700
Fair value of liabilities acquired	16,200
Fair value of other current liabilities acquired	11,600
Fair value of accounts payable acquired	4,600
Goodwill, net	1,300
Business combination, acquisition of less than 100 percent, noncontrolling interest, fair value	$ 9,800
Decrease in goodwill			$ 3,200
Hart & Cooley Flexible Duct Business
Business Acquisition [Line Items]
Consideration transferred net of working capital adjustments		$ 15,300
Cash portion of acquisition price		14,000
Payment for contingent consideration		1,300
Fair value of assets acquired		15,300
Fair value of property, plant and equipment acquired		10,800
Fair value of inventories acquired		$ 4,500