Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 28, 2024	Sep. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Dec. 30, 2023	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 923,536	$ 997,831	$ 997,745	$ 849,654	$ 732,377	$ 819,792	$ 896,984	$ 971,192	$ 3,768,766	$ 3,420,345	$ 3,982,455
Gross Profit	255,370	275,362	272,755	240,951	195,994	240,734	257,712	292,394
Consolidated net income	140,603	171,783	163,447	141,709	119,296	135,709	179,551	175,093	617,542	609,649	662,820
Net income attributable to Mueller Industries, Inc.	$ 137,652	$ 168,699	$ 160,165	$ 138,363	$ 119,238	$ 132,709	$ 177,711	$ 173,239	$ 604,879	$ 602,897	$ 658,316
Basic earnings per share (in dollars per share)	$ 1.23	$ 1.51	$ 1.44	$ 1.24	$ 1.07	$ 1.19	$ 1.60	$ 1.56	$ 5.43	$ 5.41	$ 5.90
Diluted earnings per share (in dollars per share)	1.21	1.48	1.41	1.21	1.05	1.17	1.56	1.54	5.31	5.30	5.82
Dividends per share (in dollars per share)	$ 0.20	$ 0.20	$ 0.20	$ 0.20	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.80	$ 0.60	$ 0.50