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Schedule II - Valuation And Qualifying Accounts
 12 Months Ended
Dec. 30, 2023
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation And Qualifying Accounts
MUELLER INDUSTRIES, INC.
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
Years Ended December 30, 2023, December 31, 2022, and December 25, 2021
  
  Additions  
(In thousands)Balance at beginning of yearCharged to costs and expensesOther additionsDeductionsBalance at end
of year
2023     
Allowance for doubtful accounts
$2,687 $(84)$227 $— $2,830 
Environmental reserves
$20,534 $652 $— $2,246 $18,940 
Valuation allowance for deferred tax assets
$21,504 $4,939 $267 $3,632 $23,078 
 
2022     
Allowance for doubtful accounts
$2,590 $323 $— $226 $2,687 
Environmental reserves
$27,426 $1,367 $— $8,259 $20,534 
Valuation allowance for deferred tax assets
$26,624 $(1,648)$509 $3,981 $21,504 
 
2021
 
 
 
 
 
Allowance for doubtful accounts
$1,538 $1,216 $— $164 $2,590 
Environmental reserves
$24,001 $4,964 $— $1,539 $27,426 
Valuation allowance for deferred tax assets
$27,199 $108 $642 $1,325 $26,624