Subsequent Events (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended
Jul. 31, 2013	May 08, 2013
Subsequent Events [Abstract]
Distribution Made to Member or Limited Partner, Cash Distributions Declared		$ 18.6
Share Per Unit Exchange Ratio		0.2234
Distribution Made to Member or Limited Partner, Distributions Declared, Per Unit	$ 0.52	$ 0.52

The equity impact of cash distributions declared to a common shareholder or unit-holder by a LLC or LP.

No definition available.

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