Number of parties involved in settlement negotiations.

No definition available.

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- Definition

Number of properties surrounding the Lead Refinery site.

+ References

No definition available.

+ Details

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- Definition

Site Contingency, Environmental Remedial and Feasibility Study, Financial Guarantee

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Estimated time frame for resolution of the uncertainty as to the loss for an individual site.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Best estimate of the properties loss exposure around the refinery site, for reasonably possible environmental contingencies for which no accrual has been recorded.

+ References

No definition available.

+ Details

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Balance Type:	debit
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- Definition

Estimate of reasonably possible loss exposure in excess of amount accrued for remediation, site restoration, postclosure, monitoring commitments, or other exit costs associated with the sale, disposal or abandonment of a particular property resulting from unanticipated contamination of the assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14394-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 3: 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.Q4)
-URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751

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Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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- Details

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Namespace Prefix:
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Balance Type:
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Commitments and Contingencies - Lead Refinery Site (Details) - Lead Refinery Site [Member] $ in Millions	1 Months Ended	9 Months Ended
	Sep. 30, 2014 USD ($) property	Sep. 30, 2017 USD ($)	Sep. 27, 2014 potentially_responsible_party	Jul. 17, 2009 potentially_responsible_party
Site Contingency [Line Items]
Financial guarantee		$ 1.0
Non operating Properties [Member]
Site Contingency [Line Items]
Estimated number of years until mitigation resolution		20 years
Number of parties involved in settlement negotiations \| potentially_responsible_party			2	2
EPA's estimated cost of site remediation	$ 26.0
Number of surrounding properties \| property	300
Non operating Properties [Member] \| Minimum [Member]
Site Contingency [Line Items]
Mitigation estimates		$ 2.1
Non operating Properties [Member] \| Maximum [Member]
Site Contingency [Line Items]
Mitigation estimates		$ 4.7