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Commitments and Contingencies (Details) (USD $) | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended |  |  | 12 Months Ended
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Dec. 31, 2011 | Dec. 25, 2010 | Dec. 26, 2009 | Dec. 31, 2011 Facilities vehicles and equipment [Member] | Dec. 25, 2010 Facilities vehicles and equipment [Member] | Dec. 26, 2009 Facilities vehicles and equipment [Member] | Dec. 31, 2011 United States Department of Commerce and United States International Trade Commission Antidumping Investigation [Member] | Dec. 25, 2010 United States Department of Commerce and United States International Trade Commission Antidumping Investigation [Member] Department of Commerce [Member] | Dec. 25, 2010 United States Department of Commerce and United States International Trade Commission Antidumping Investigation [Member] International Trade Commission [Member] | Dec. 31, 2011 Insurance Settlement [Member] Bilston, Great Britain [Member] | Dec. 31, 2011 Insurance Settlement [Member] Fulton, Mississippi [Member] | Dec. 31, 2011 Insurance Settlement [Member] Wynne, Arkansas [Member] | Dec. 31, 2011 United States Department of Commerce Antidumping Review [Member] | Dec. 27, 2008 United States Department of Commerce Antidumping Review [Member] | Dec. 31, 2011 Canadian Dumping and Countervail Investigation [Member] | Dec. 31, 2011 Supplier Litigation [Member] | Dec. 31, 2011 Operating Properties [Member] Mueller Copper Tube Products, Inc [Member] | Dec. 25, 2010 Operating Properties [Member] Belding Michigan Lead Matters [Member] | Dec. 31, 2011 Non-operating Properties [Member] Southeast Kansas Sites [Member] | Dec. 27, 2008 Non-operating Properties [Member] Southeast Kansas Sites [Member] | Dec. 31, 2011 Non-operating Properties [Member] Eureka Mills Site [Member] | Dec. 31, 2011 Non-operating Properties [Member] Shasta Area Mine Sites [Member] | Dec. 25, 2010 Non-operating Properties [Member] Shasta Area Mine Sites [Member] | Dec. 26, 2009 Non-operating Properties [Member] Shasta Area Mine Sites [Member] | Dec. 31, 2011 Non-operating Properties [Member] Lead Refinery Site [Member] | Dec. 25, 2010 Non-operating Properties [Member] Lead Refinery Site [Member] | Dec. 26, 2009 Non-operating Properties [Member] Lead Refinery Site [Member]
Site Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental expense | $ 400,000 | $ 5,400,000 | $ 1,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 600,000 | $ 700,000 | $ 500,000 | $ 100,000 | $ 100,000 | $ 100,000
Environmental reserves | 22,892,000 | 23,902,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 400,000 |  | 9,500,000 |  |  |  |  |  |  |
Expected environmental expenditures for 2012 | 1,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected environmental expenditures for 2013 | 1,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected environmental expenditures for 2014 | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected environmental expenditures for 2015 | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected environmental expenditures for 2016 | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected environmental expenditures after 2016 | 9,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of former smelters |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |
Number of parties involved in settlement negotiations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |
Number of smelting sites the company will share the preliminary site assessment costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |
Number of potentially responsible parties sharing site assessment cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |
Annual amount spent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,500,000 |  |  |  |  |  |
Settlement claims paid to the State of Utah |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 250,000 |  |  |  |  |  |
Mitigation estimates minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 900,000 |  |  |  |  | 8,200,000 |  |  | 2,100,000 |  |
Mitigation estimates maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,500,000 |  |  | 3,300,000 |  |
Estimated number of years until mitigation resolution |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10Y |  |  |  |  | 20Y |  |  | 20Y |  |
Civil fine paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 176,000 |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Period of measures under antidumping investigation (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5Y |  |  |  |  |  |  |  |  |  |  |  |
Insurance settlement proceeds |  |  |  |  |  |  |  |  |  | 35,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of subsidiaries jointly filed antidumping petitions |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assignment of antidumping duty rate on U.S. imports by Company subsidiaries (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  | 19.80% | 48.33% |  |  |  |  |  |  |  |  |  |  |  |  |
Reserve for Antidumping Duties for Report Issued on April 19, 2010 |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 | 4,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of subsidiaries that filed related to supplier litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
Number of Xiamen Lota employees that filed a patent lawsuit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
Number of US patents alleged by the plaintiff |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Final antidumping rates minimum (in hundredths) |  |  |  |  |  |  |  | 24.89% | 11.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Final antidumping rates maximum (in hundredths) |  |  |  |  |  |  |  | 27.16% | 60.85% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance claim deductible amount |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pre-tax gain from settlement |  |  |  |  |  |  |  |  |  | 21,200,000 | 1,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Period of production curtailment for cleanup and repairs (in weeks) |  |  |  |  |  |  |  |  |  |  | 1W |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Book value of inventories prior to potential scrap recoveries |  |  |  |  |  |  |  |  |  |  |  | 2,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net book value of certain production equipment and building structures that were damaged |  |  |  |  |  |  |  |  |  |  |  | 9,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Receivable for clean-up and other out of pocket costs incurred |  |  |  |  |  |  |  |  |  |  |  | 2,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Advance from insurance company |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net claim receivable |  |  |  |  |  |  |  |  |  |  | 1,500,000 | 4,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent advance from insurance company |  |  |  |  |  |  |  |  |  |  |  | 40,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property damage claim |  |  |  |  |  |  |  |  |  |  | 1,500,000 | 4,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum amount payable under the Consulting agreement | 6,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Litigation Settlement [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Litigation settlement | 10,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease payments scheduled for 2012 |  |  |  | 7,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease payments scheduled for 2013 |  |  |  | 6,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease payments scheduled for 2014 |  |  |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease payments scheduled for 2015 |  |  |  | 4,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease payments scheduled for 2016 |  |  |  | 3,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease payments scheduled after 2016 |  |  |  | 6,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease expense |  |  |  | $ 8,800,000 | $ 8,000,000 | $ 8,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consulting agreement term (in years) | 6Y |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial period of the consulting agreement (in years) | 4Y |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial period rate of pay based on final base compensation (in hundredths) | two-thirds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Final period of the consulting agreement (in years) | 2Y |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Final period rate of pay of based on final base compensation (in hundredths) | one-third |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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