Acquisitions and Dispositions - Narrative (Details) - USD ($) $ in Thousands							3 Months Ended	5 Months Ended	12 Months Ended
	Dec. 07, 2021	Oct. 25, 2021	Sep. 02, 2021	Jan. 29, 2021	Aug. 03, 2020	Jan. 17, 2020	Sep. 25, 2021	Dec. 26, 2020	Dec. 25, 2021	Dec. 26, 2020	Jul. 28, 2021
Mueller Middle East
Business Acquisition [Line Items]
Interest in joint venture	15.00%
Mueller Middle East | Joint Venture
Business Acquisition [Line Items]
Interest in joint venture	40.00%
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Copper Bar
Business Acquisition [Line Items]
Gain (loss) on disposal of businesses		$ 6,500
Consideration for sale of businesses		$ 10,100
Assets											$ 3,600
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Die-Mold
Business Acquisition [Line Items]
Net sales of disposed of business									$ 10,900	$ 13,500
Operating income of disposed business									2,200
Net income of disposed business										2,300
Gain (loss) on disposal of businesses			$ 4,700
Consideration for sale of businesses			$ 22,800
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Fabricated Tube Products and Shoals Tubular, Inc.
Business Acquisition [Line Items]
Net sales of disposed of business									37,000	51,500
Net income of disposed business									5,500	6,400
Gain (loss) on disposal of businesses									46,600
Consideration for sale of businesses											75,700
Assets											32,700
Carrying value of the liabilities disposed											$ 3,600
Mueller Middle East
Business Acquisition [Line Items]
Ownership interest acquired (as a percent)	55.00%
Total consideration paid	$ 20,017
Cash paid for acquisition	15,800
Debt assumed	2,600
Payment for contingent consideration liability	1,000
Equity interest issued or issuable	$ 700
Asset acquisition, revenue from acquiree									48,200	$ 37,400
Hart & Cooley Flexible Duct Business
Business Acquisition [Line Items]
Total consideration paid				$ 15,300
Cash paid for acquisition				$ 14,000
Payment for contingent consideration liability							$ 1,300
Kessler
Business Acquisition [Line Items]
Total consideration paid					$ 57,200
Asset acquisition, revenue from acquiree								$ 55,000	207,900
Increase in intangible assets									1,500
Decrease in property, plant, and equipment									(1,400)
Goodwill, purchase accounting adjustments									$ (100)
Shoals
Business Acquisition [Line Items]
Total consideration paid						$ 15,321
Retail Distribution Business
Business Acquisition [Line Items]
Interest in joint venture			17.00%
Ownership interest acquired (as a percent)			17.00%