Organization and Basis of Presentation June 2015 Adjustment to Partners’ Capital for the Excess of Fair Value (Details) - USD ($) $ in Millions	Jun. 05, 2015	Mar. 10, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash	$ 209.9	$ 303.4
Carrying value of non-controlling interest acquired	(45.4)	(66.4)
Excess of fair value of consideration transferred over carrying value of non-controlling interest acquired	$ 164.5	$ 237.0

This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

Name:	us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant