Debt Obligations (Revolving Credit Facility Narrative) (Details) (Cyan Partners Limited Partnership [Member], Revolving Credit Facility [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Jan. 24, 2014
Cyan Partners Limited Partnership [Member] \| Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Issuance date	Apr. 12, 2012
Amount borrowed		$ 115

Date the debt instrument was issued, in CCYY-MM-DD format.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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