Acquisitions and Dispositions - Narrative (Details) - USD ($) $ in Millions					3 Months Ended			9 Months Ended
	Sep. 02, 2021	Jan. 29, 2021	Aug. 03, 2020	Jan. 17, 2020	Sep. 25, 2021	Jun. 26, 2021	Mar. 27, 2021	Sep. 25, 2021	Sep. 26, 2020	Jul. 28, 2021
Die-Mold | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Consideration for sale of businesses	$ 24.0
Net sales of disposed of business								$ 10.9	$ 10.4
Net income of disposed business								1.6	1.4
Gain (loss) on disposal of businesses	$ 4.7
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										$ 78.2
Net sales of disposed of business								37.0	38.3
Net income of disposed business								5.5	$ 4.8
Assets of disposed business										31.7
Liabilities of disposed business										$ 3.6
Gain (loss) on disposal of businesses								$ 50.1
Hart & Cooley Flexible Duct Business
Business Acquisition [Line Items]
Consideration transferred net of working capital adjustments		$ 15.3
Cash portion of acquisition price		14.0
Payment for contingent consideration		1.3
Fair value of assets acquired		15.3
Fair value of property, plant and equipment acquired		10.8
Fair value of inventories acquired		4.5
Tax-deductible goodwill		$ 0.1
Increase (decrease) in property plant and equipment					$ 2.4
Increase (decrease) in goodwill					1.0
Recognition of contingent consideration					$ 1.4
Wieland-Kessler LLC
Business Acquisition [Line Items]
Consideration transferred net of working capital adjustments			$ 57.2
Fair value of assets acquired			27.3
Tax-deductible goodwill			$ 29.9
Increase (decrease) in property plant and equipment						$ (1.4)
Increase (decrease) in goodwill						$ 1.4	$ (1.5)
Increase in intangible assets							$ 1.5
Shoals Tubular, Inc.
Business Acquisition [Line Items]
Consideration transferred net of working capital adjustments				$ 15.3
Cash portion of acquisition price				15.3
Fair value of assets acquired				6.2
Fair value of property, plant and equipment acquired				3.7
Fair value of inventories acquired				1.8
Tax-deductible goodwill				9.3
Fair value of accounts receivable acquired				0.7
Fair value of liabilities acquired				$ 0.2
Retail Distribution Business
Business Acquisition [Line Items]
Ownership interest acquired (as a percent)	17.00%