General (Investment in JV) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2013
Schedule of Equity Method Investments [Line Items]
Investment Commitment in Joint Venture	$ 75.0
E2 [Member]
Investment In L L C [Abstract]
Payments to Acquire Interest in Joint Venture	$ 49.1
Noncontrolling Interest, Ownership Percentage by Parent	93.00%

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

Name:	us-gaap_PaymentsToAcquireInterestInJointVenture
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration