Acquisitions - Condensed Pro Forma Consolidated Results of Operations (Details) - Nehring Electrical Works Company - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 29, 2024	Jun. 29, 2024
Business Combination [Line Items]
Net sales	$ 1,048,353	$ 1,981,861
Net income attributable to Mueller Industries, Inc.	$ 159,922	$ 299,557
Basic earnings per share (in dollars per share)	$ 1.44	$ 2.69
Diluted earnings per share (in dollars per share)	$ 1.40	$ 2.63