ORGANIZATION AND OPERATIONS Segment Information, Narrative (Details) bbl in Millions	12 Months Ended
Dec. 31, 2015 mi bbl
Organization and Operations [Abstract]
Total ownership interest held by general partner	14.90%
Segment Information
Number of business segments	3
Pipeline Segment \| Central West Refined Products Pipelines
Segment Information
Pipeline length, in miles	3,140
Pipeline Segment \| Crude Oil Pipelines
Segment Information
Pipeline length, in miles	1,200
Storage capacity, in barrels \| bbl	4.0
Pipeline Segment \| East and North Pipelines
Segment Information
Pipeline length, in miles	2,360
Storage capacity, in barrels \| bbl	6.4
Pipeline Segment \| Ammonia Pipeline
Segment Information
Pipeline length, in miles	2,000
Storage Segment
Segment Information
Storage capacity, in barrels \| bbl	82.9

Length of pipeline, in miles

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- Definition

Storage capacity of tanks at terminals and storage facilities, in barrels.

+ References

No definition available.

+ Details

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- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

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Period Type:	duration

- References

No definition available.

+ Details

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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