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SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS | 12 Months Ended
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Dec. 31, 2011
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS [Abstract] |
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS | MUELLER INDUSTRIES, INC. SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS Years Ended December 31, 2011, December 25, 2010, and December 26, 2009
|  |  |  |  | Additions |  |  |  |  |  |  |  |  |  |  |
|  | Balance at |  |  | Charged to |  |  |  |  |  |  |  |  |  |  |  |  | Balance |
|  | beginning |  |  | costs and |  |  | Other |  |  |  |  |  |  |  |  |  | at end |
(In thousands) |  | of year |  |  | expenses |  |  | additions |  |  |  |  | Deductions |  |  |  |  | of year |
2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 5,447 |  |  | $ | (229 | ) |  | $ | (2 | ) | (1) |  |  | $ | 3,652 |  |  |  |  | $ | 1,564 |
Environmental reserves |  | $ | 23,902 |  |  | $ | 392 |  |  | $ | - |  |  |  |  | $ | 1,402 |  |  |  |  | $ | 22,892 |
Valuation allowance for deferred tax assets |  | $ | 28,714 |  |  | $ | (443 | ) |  | $ | 1,434 |  | (2) |  |  | $ | - |  |  |  |  | $ | 29,705 |
2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 5,947 |  |  | $ | 4,763 |  |  | $ | 111 |  | (1) |  |  | $ | 5,374 |  |  |  |  | $ | 5,447 |
Environmental reserves |  | $ | 23,268 |  |  | $ | 5,378 |  |  | $ | (6 | ) |  |  |  | $ | 4,738 |  |  |  |  | $ | 23,902 |
Valuation allowance for deferred tax assets |  | $ | 33,812 |  |  | $ | (5,496 | ) |  | $ | 398 |  |  |  |  | $ | - |  |  |  |  | $ | 28,714 |
2009 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 6,690 |  |  | $ | 506 |  |  | $ | 85 |  | (1) |  |  | $ | 1,334 |  |  |  |  | $ | 5,947 |
Environmental reserves |  | $ | 23,248 |  |  | $ | 1,087 |  |  | $ | 5 |  |  |  |  | $ | 1,072 |  |  |  |  | $ | 23,268 |
Valuation allowance for deferred tax assets |  | $ | 32,624 |  |  | $ | 52 |  |  | $ | 1,136 |  | (2) |  |  | $ | - |  |  |  |  | $ | 33,812 |
(1) Other consists primarily of bad debt recoveries as well as the effect of fluctuating foreign currency exchange rates in all years presented. |
(2) Other includes the additions to valuation allowances in which previously unrecorded gross deferred tax assets and valuation allowances were recognized. |

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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