v3.19.3.a.u2

ORGANIZATION AND OPERATIONS Narrative 4 (Details) - USD ($) $ in Thousands							12 Months Ended
	Nov. 26, 2019	Jun. 29, 2018	May 04, 2017	Apr. 28, 2017	Apr. 18, 2017	Feb. 22, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Feb. 26, 2014
Class of Stock [Line Items]
Net proceeds from issuance of units							$ 15,000	$ 10,204	$ 657,475
Debt Instrument [Line Items]
Proceeds from note offering, net of issuance costs							491,580	0	543,333
Financing Receivable, Impaired [Line Items]
Proceeds from Axeon term loan							$ 0	$ 0	$ 110,000
Common Limited Partner [Member]
Class of Stock [Line Items]
Issuance of units (units)	527,426	413,736			14,375,000		527,426	413,736	14,375,000
Proceeds from common unit issuance including general partner contribution		$ 10,200			$ 657,500
Net proceeds from issuance of units							$ 15,000	$ 10,000	$ 643,878
Series B Preferred Limited Partner [Member]
Class of Stock [Line Items]
Issuance of units (units)				15,400,000
Preferred units distribution percentage				7.625%
Net proceeds from issuance of units				$ 371,800
5.625% senior notes
Debt Instrument [Line Items]
Senior notes issued				$ 550,000			$ 550,000	$ 550,000
Stated interest rate				5.625%			5.625%
Axeon [Member]
Financing Receivable, Impaired [Line Items]
Axeon Term Loan Receivable											$ 190,000
Maximum Amount Guarantees										$ 125,000
Proceeds from Axeon term loan						$ 110,000
Navigator Acquisition [Member]
Business Acquisition [Line Items]
Purchase price of Navigator Acquisition			$ 1,500,000

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