A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

The number of each class of partnership units outstanding at the balance sheet date. Units represent shares of ownership of the general, limited, and preferred partners.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04.16(b))
-URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04.16(a))
-URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-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=27012166&loc=d3e187171-122770

+ Details

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- Definition

The number of units sold in a private placement of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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=27012166&loc=d3e187171-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 16
-Subparagraph a, b
-Article 6

+ Details

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- Definition

The number of units sold in a public offering of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.

+ References

+ Details

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Equity - Schedule of Number of Units Outstanding (Details) - shares					3 Months Ended	9 Months Ended
	Jun. 09, 2016	May 23, 2016	Mar. 29, 2016	May 18, 2015	Mar. 31, 2016	Sep. 30, 2016
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at December 31, 2015 (in units)					154,941,269	154,941,269
Units issued in connection with ATM Offering (in units)						765,307
Units issued in connection with public offering (in units)						25,229,591
Balance at March 31, 2016 (in units)						180,936,167
Common Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Units issued in connection with ATM Offering (in units)				7,692,308
General Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at December 31, 2015 (in units)					3,098,825	3,098,825
Units issued in connection with ATM Offering (in units)				156,986	15,307	15,307
Units issued in connection with public offering (in units)	32,143		258,163			504,591
Balance at March 31, 2016 (in units)						3,618,723
General Public \| Common Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at December 31, 2015 (in units)					62,892,308	62,892,308
Units issued in connection with ATM Offering (in units)					750,000	750,000
Units issued in connection with public offering (in units)		1,575,000	12,650,000			24,725,000
Balance at March 31, 2016 (in units)						88,367,308
Shell Pipeline Company L P \| Common Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at December 31, 2015 (in units)					21,475,068	21,475,068
Units issued in connection with ATM Offering (in units)						0
Units issued in connection with public offering (in units)						0
Balance at March 31, 2016 (in units)						21,475,068
Shell Pipeline Company L P \| Subordinate Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance at December 31, 2015 (in units)					67,475,068	67,475,068
Units issued in connection with ATM Offering (in units)						0
Units issued in connection with public offering (in units)						0
Balance at March 31, 2016 (in units)						67,475,068