Contingency Reserves (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Loss Contingencies [Line Items]
Loss contingency accrual	$ 15.8	$ 15.3
Current portion of contingency reserves	(2.0)	(2.0)
Long-term portion of contingency reserves	13.8	13.3
Environmental reserves [Member]
Loss Contingencies [Line Items]
Loss contingency accrual	15.0	14.9
Other Reserves [Member]
Loss Contingencies [Line Items]
Loss contingency accrual	$ 0.8	$ 0.4

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Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

+ Details

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Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer.

+ References

+ Details

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- Definition

Amount of loss contingency liability expected to be resolved after one year or beyond the normal operating cycle, if longer.

+ References

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