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Environmental	9 Months Ended
Environmental	Sep. 30, 2014
Environmental Expense and Liabilities [Abstract]
Environmental	Environmental We expensed zero and $1.1 million for the three months ended September 30, 2014 and 2013, respectively, and $1.3 million and $1.9 million, for the nine months ended September 30, 2014 and 2013, respectively, for environmental remediation obligations. The accrued environmental liability reflected in our consolidated balance sheets was $81.0 million and $87.8 million at September 30, 2014 and December 31, 2013, respectively, of which $67.5 million and $73.6 million, respectively, were classified as other long-term liabilities. These accruals include remediation and monitoring costs expected to be incurred over an extended period of time (up to 30 years for certain projects).

The entire disclosure for environmental loss contingencies, such as presence of hazardous waste, relevant information from reports issued by regulators, and estimated costs to achieve compliance with regulatory requirements. This element may be used for all of an entity's disclosures about environmental loss contingencies.

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