v3.20.4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Narrative (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended	12 Months Ended
	Oct. 01, 2020	Mar. 31, 2020	Jun. 30, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019
Goodwill impairment loss	$ 0			$ 225,000	$ 0	$ 0
Asset impairment losses					305,700
Unrecognized tax benefits				$ 0	0
Tax years subject to examination				For U.S. federal and state purposes, as well as for our major non-U.S. jurisdictions, tax years subject to examination are 2016 through 2019, according to standard statute of limitations.
Payment terms				Generally, payment terms do not exceed 30 days.
Common unitholders ownership interest			98.00%
General partner ownership interest			2.00%
Goodwill				$ 766,416	1,005,853	1,005,853
Pipeline Segment
Goodwill				479,231	704,231	704,231
St. Eustatius Bunkers [Member]
Goodwill						$ 31,100	$ 0
Crude Oil Pipelines | Pipeline Segment
Goodwill impairment loss		$ 225,000		225,000
Reporting unit, percentage of fair value in excess of carrying amount	4.00%
Goodwill				308,600
Other long-term assets, net
Restricted cash				$ 8,800	$ 8,800

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The general partner ownership interest (ownership percentage) in the limited partnership. Excludes other ownership interests held by the general partner in the limited partnership.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Description of payment terms in contract with customer. Includes, but is not limited to, timing of payment, existence of financing component, variability of consideration and constraint on variable consideration.

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