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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. 29, 2012 | Dec. 31, 2011 | Dec. 25, 2010 | Dec. 29, 2012 Consulting Agreement [Member] | Dec. 29, 2012 Facilities Vehicles and Equipment [Member] | Dec. 31, 2011 Facilities Vehicles and Equipment [Member] | Dec. 25, 2010 Facilities Vehicles and Equipment [Member] | Dec. 29, 2012 United States Department of Commerce and United States International Trade Commission Antidumping Investigation [Member] | Dec. 29, 2012 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] Department of Commerce [Member] | Dec. 29, 2012 United States Department of Commerce and United States International Trade Commission Antidumping Investigation [Member] Department of Commerce [Member] Hailiang [Member] | Dec. 29, 2012 United States Department of Commerce and United States International Trade Commission Antidumping Investigation [Member] Department of Commerce [Member] Golden Dragon [Member] | Dec. 25, 2010 United States Department of Commerce and United States International Trade Commission Antidumping Investigation [Member] International Trade Commission [Member] | Dec. 25, 2010 Insurance Settlement [Member] Bilston, Great Britain [Member] | Mar. 31, 2012 Insurance Settlement [Member] Fulton, Mississippi [Member] | Dec. 31, 2010 Insurance Settlement [Member] Fulton, Mississippi [Member] | Dec. 29, 2012 Insurance Settlement [Member] Wynne, Arkansas [Member] | Dec. 31, 2011 Litigation Settlement [Member] | Dec. 29, 2012 United States Department of Commerce Antidumping Review [Member] | Dec. 27, 2008 United States Department of Commerce Antidumping Review [Member] | Dec. 29, 2012 Operating Properties [Member] Mueller Copper Tube Products, Inc. [Member] | Dec. 25, 2010 Operating Properties [Member] Belding Michigan Lead Matters [Member] | Dec. 29, 2012 Non-Operating Properties [Member] Southeast Kansas Sites [Member] | Dec. 27, 2008 Non-Operating Properties [Member] Southeast Kansas Sites [Member] | Dec. 29, 2012 Non-Operating Properties [Member] Shasta Area Mine Sites [Member] | Dec. 29, 2012 Non-Operating Properties [Member] Lead Refinery Site [Member] | Dec. 31, 2011 Non-Operating Properties [Member] Lead Refinery Site [Member] | Dec. 25, 2010 Non-Operating Properties [Member] Lead Refinery Site [Member]
Site Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental expense | $ 3,100,000 | $ 400,000 | $ 5,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,700,000 | $ 100,000 | $ 100,000 | $ 100,000
Environmental reserves | 24,600,000 | 22,892,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 400,000 |  | 9,500,000 |  |  |  |
Expected environmental expenditures for 2013 | 1,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected environmental expenditures for 2014 | 900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected environmental expenditures for 2015 | 800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected environmental expenditures for 2016 | 900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected environmental expenditures for 2017 | 900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected environmental expenditures after 2017 | 9,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |
Payment towards past costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000 |  |  |  |  |
Mitigation estimates minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,600,000 |  |  |  | 8,400,000 | 2,400,000 |  |
Mitigation estimates maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,400,000 | 3,600,000 |  |
Estimated number of years until mitigation resolution |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10Y |  |  |  | 20Y | 20Y |  |
Lead refinery site [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
EPA's estimated cost of site remediation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 28,900,000 |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assignment of antidumping duty rate on U.S. imports by Company subsidiaries (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 19.80% | 48.30% |  |  |  |  |  |  |  |
Reserve for Antidumping Duties for Report Issued on April 19, 2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,100,000 | 3,800,000 |  |  |  |  |  |  |  |
Gain Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of subsidiaries jointly filed antidumping petitions |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Final antidumping rates minimum (in hundredths) |  |  |  |  |  |  |  |  |  | 24.89% |  |  | 11.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Final antidumping rates maximum (in hundredths) |  |  |  |  |  |  |  |  |  | 27.16% |  |  | 60.85% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average dumping margin (in hundredths) |  |  |  |  |  |  |  |  | 5.53% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of dumping margin (in hundredths) |  |  |  |  |  |  |  |  |  |  | 60.58% | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance settlement proceeds |  |  |  |  |  |  |  |  |  |  |  |  |  | 35,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance claim deductible amount |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pre-tax gain from settlement |  |  |  |  |  |  |  |  |  |  |  |  |  | 21,200,000 | 1,500,000 | 1,500,000 |  | 10,500,000 |  |  |  |  |  |  |  |  |  |
Advance from insurance company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 65,000,000 |  |  |  |  |  |  |  |  |  |  |
Proceeds from insurance company received |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 55,000,000 |  |  |  |  |  |  |  |  |  |  |
Property damage claim |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 44,600,000 |  |  |  |  |  |  |  |  |  |  |
Supplier Litigation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of subsidiaries that filed related to supplier litigation | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Litigation settlement amount | 5,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Canadian Dumping and Countervail Investigation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial period of potential antidumping duties | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Potential additional antidumping term | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease payments scheduled for 2013 |  |  |  |  | 7,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease payments scheduled for 2014 |  |  |  |  | 6,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease payments scheduled for 2015 |  |  |  |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease payments scheduled for 2016 |  |  |  |  | 4,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease payments scheduled for 2017 |  |  |  |  | 3,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease payments scheduled after 2017 |  |  |  |  | 3,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease expense |  |  |  |  | 8,500,000 | 8,800,000 | 8,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consulting agreement term (in years) |  |  |  | 6Y |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial period of the consulting agreement |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial period rate of pay based on final base compensation (in hundredths) |  |  |  | two-thirds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Final period of the consulting agreement |  |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Final period rate of pay of based on final base compensation (in hundredths) |  |  |  | one-third |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining amount payable under the Consulting agreement |  |  |  | $ 5,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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