Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 24, 2022	Jun. 25, 2022	Mar. 26, 2022	Dec. 25, 2021	Sep. 25, 2021	Jun. 26, 2021	Mar. 27, 2021	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 877,581	$ 944,830	$ 1,150,042	$ 1,010,002	$ 956,357	$ 982,248	$ 1,012,592	$ 818,148	$ 3,982,455	$ 3,769,345	$ 2,398,043
Gross profit	256,781	266,193	329,128	265,491	229,763	237,983	212,880	149,730
Consolidated net income	140,235	155,813	207,524	159,248	126,698	172,256	110,932	65,238	662,820	475,124	143,649
Net income attributable to Mueller Industries, Inc.	$ 138,906	$ 154,542	$ 206,552	$ 158,316	$ 125,601	$ 170,980	$ 108,832	$ 63,107	$ 658,316	$ 468,520	$ 139,493
Basic earnings per share (in dollars per share)	$ 2.50	$ 2.78	$ 3.70	$ 2.82	$ 2.24	$ 3.05	$ 1.95	$ 1.13	$ 11.80	$ 8.36	$ 2.50
Diluted earnings per share (in dollars per share)	2.46	2.74	3.65	2.78	2.21	3.01	1.92	1.11	11.64	8.25	2.47
Dividends per share (in dollars per share)	$ 0.25	$ 0.25	$ 0.25	$ 0.25	$ 0.13	$ 0.13	$ 0.13	$ 0.13	$ 1.00	$ 0.52	$ 0.40