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Leases - Narrative Information (Details)	9 Months Ended
	Sep. 30, 2019
Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating and finance leases term	1 year
Lessee, operating and finance leases, optional renewal term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating and finance leases term	60 years
Lessee, operating and finance leases, optional renewal term	40 years

X

- Definition

Lessee, Leases, Renewal Term

+ References

No definition available.

+ Details

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Namespace Prefix:	paa_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lessee, Leases, Term Of Contract

+ References

No definition available.

+ Details

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Namespace Prefix:	paa_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: