CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 210,248	$ 171,783	$ 618,018	$ 476,939
Other comprehensive (loss) income, net of tax:
Foreign currency translation	(6,701)	6,117	20,318	(5,909)
Net change with respect to derivative instruments and hedging activities, net of tax of $34, $(425), $(176), and $(304)	(114)	1,460	601	1,041
Net change in pension and postretirement obligation adjustments, net of tax of $(57), $134, $(765), and $155	135	(323)	2,344	(380)
Attributable to unconsolidated affiliates, net of tax of $353, $(27), $566, and $433	(1,217)	90	(1,950)	(1,493)
Total other comprehensive (loss) income, net	(7,897)	7,344	21,313	(6,741)
Consolidated comprehensive income	202,351	179,127	639,331	470,198
Comprehensive income attributable to noncontrolling interests	(1,588)	(3,499)	(6,048)	(8,983)
Comprehensive income attributable to Mueller Industries, Inc.	$ 200,763	$ 175,628	$ 633,283	$ 461,215