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Commitments and Contingencies - Additional Information (Detail) $ in Millions | Mar. 31, 2016 USD ($) LegalMatter | Dec. 31, 2015 USD ($)
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Loss Contingencies [Line Items] |  |
Loss Contingency, Pending Claims, Number | LegalMatter | 4,000 |
Liability For Claims And Contingencies | $ 235.4 | $ 237.9
Liability Reserve For Insurance Claims | 110.3 | 111.0
Environmental Reserve Other Accrued Costs | 19.7 | 22.8
Letters of credit outstanding | $ 382.8 | $ 402.2

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- Definition Environmental reserve, other accrued costs. + References No definition available. + Details
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- Definition Liability For Claims And Contingencies + References No definition available. + Details
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- Definition Liability Reserve For Insurance Claims + References No definition available. + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition Number of pending claims pertaining to a loss contingency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 + Details
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