Acquisitions - Condensed Pro Forma Consolidated Results of Operations (Details) - Nehring Electrical Works Company - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 28, 2024	Sep. 28, 2024
Business Combination [Line Items]
Net sales	$ 997,831	$ 2,979,692
Net income attributable to Mueller Industries, Inc.	$ 165,199	$ 464,756
Basic earnings per share (in dollars per share)	$ 1.48	$ 4.17
Diluted earnings per share (in dollars per share)	$ 1.45	$ 4.08