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Schedule II - Valuation And Qualifying Accounts
 12 Months Ended
Dec. 31, 2022
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 31, 2022, December 25, 2021, and December 26, 2020
  
  Additions  
(In thousands)Balance at beginning of yearCharged to costs and expensesOther additionsDeductionsBalance at end
of year
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 
 
2020
 
 
 
 
 
Allowance for doubtful accounts
$770 $1,208 $— $440 $1,538 
Environmental reserves
$20,866 $4,242 $— $1,107 $24,001 
Valuation allowance for deferred tax assets
$23,130 $2,317 $1,898 $146 $27,199