Sale of Assets Sale of Assets [Table] (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Significant Acquisitions and Disposals [Line Items]
Significant Acquisitions and Disposals, Gain (Loss) on Sale or Disposal, Net of Tax	$ 0

The difference between the value of the consideration received by the Entity on the sale or disposal and the consideration received by the Entity, including any tax related impact.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2941-110230

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant