CONDENSED CONSOLIDATED BALANCE SHEETS - (Parenthetical) - USD ($) $ in Thousands	Mar. 28, 2026	Dec. 27, 2025
Current assets:
Allowance for doubtful accounts	$ 3,651	$ 2,545
Mueller Industries, Inc. stockholders' equity:
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	160,366,008	160,366,008
Common stock, shares outstanding (in shares)	110,562,284	111,179,750