CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2026	Mar. 29, 2025
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 241,389	$ 159,287
Other comprehensive (loss) income, net of tax:
Foreign currency translation	(5,910)	2,919
Net change with respect to derivative instruments and hedging activities, net of tax of $584 and $(594)	(2,010)	2,046
Net change in pension and postretirement obligation adjustments, net of tax of $(40) and $(822)	92	2,495
Attributable to unconsolidated affiliates, net of tax of $75 and $817	(257)	(2,814)
Total other comprehensive (loss) income, net	(8,085)	4,646
Consolidated comprehensive income	233,304	163,933
Comprehensive income attributable to noncontrolling interests	(2,527)	(1,059)
Comprehensive income attributable to Mueller Industries, Inc.	$ 230,777	$ 162,874