Environmental and Legal Matters Environmental and Legal Matters (Details) (USD $)	12 Months Ended
Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Estimated environmental investigations and remediation costs (less than)	$ 10,000,000

The total anticipated costs with respect to site restoration or other environmental exit costs that may occur on the sale, disposal, or abandonment of property.

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.Q4)

-URI http://asc.fasb.org/extlink&oid=6572457&loc=d3e149879-122751

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section Y

-Paragraph Question 4

Name:	us-gaap_EnvironmentalCostsOfPropertyForSaleDisposalOrAbandonmentAnticipatedExitCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration