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Contingencies - Additional Information (Detail) $ in Millions |  |  | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 01, 2014 USD ($) | Mar. 25, 2014 USD ($) | Jul. 04, 2015 USD ($) Manufacturers_Distributors Complaints Defendant | Dec. 31, 2014 USD ($)
Commitments and Contingencies Disclosure [Abstract] |  |  |  |
Accrual for environmental loss contingencies, gross |  |  | $ 22.0 | $ 27.2
Accrued environmental loss contingencies, current |  |  | 10.6 | 11.3
Accrued environmental loss contingencies, noncurrent |  |  | $ 11.4 | $ 15.9
Steel manufacturers, number of manufacturers | Manufacturers_Distributors |  |  | 8 |
Additional complaints being filed in July and December of 2010 | Complaints |  |  | 2 |
Complaints that are dismissed | Complaints |  |  | 2 |
Defendants that have reached court approved settlements with the plaintiffs | Defendant |  |  | 5 |
Damages against all defendants jointly and severally | $ 160.8 | $ 52.0 |  |
Practical estimable exposure |  |  | $ 40.0 |

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- Definition Undiscounted amount of the accrual for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q1) -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section Y -Paragraph Question 1 + Details
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