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Organization and Basis of Consolidation and Presentation - Simplification Agreement (Details) - Simplification Agreement - Forecast shares in Millions	3 Months Ended
	Dec. 31, 2016 shares
PAA GP
Simplification Transactions
Economic general partner interest converted into non-economic interest (as a percent)	2.00%
AAP
Simplification Transactions
Issuance of common units (in units)	245.5

X

- Definition

Percentage of economic interest held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP), converted into a non-economic interest.

+ References

No definition available.

+ Details

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Namespace Prefix:	paa_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of limited partner units issued.

+ 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 FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

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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.

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- Details

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