Condensed Consolidated Balance Sheets (Parenthetical) - Limited Partner - shares	Jun. 30, 2020	Dec. 31, 2019
Limited partners’ interest units issued (in shares)	78,006,842	77,560,355
Limited Partners' Capital Account, Units Outstanding	78,006,842	77,560,355

The number of limited partner units outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770

Name:	us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant