Debt - Joint Venture Debt (Narrative) (Details)	Mar. 31, 2016	Mar. 03, 2016	Apr. 30, 2013	Apr. 04, 2013
Debt Disclosure [Abstract]
Additional interest acquired (as a percent)				39.00%
Ownership interest (as a percent)	77.00%	77.00%	65.00%	65.00%

Percentage of voting equity interests acquired at the acquisition date in the business combination.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant