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Equity-Indexed Compensation Plans - AAP Management Units (Details) - AAP Management Units | Dec. 31, 2017 shares
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Equity-Indexed Compensation Plans |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 0
Unearned units | 800,000
Conversion Of AAP Management Units Into AAP Units |
Equity-Indexed Compensation Plans |
Unit conversion ratio | 0.941
AAP |
Equity-Indexed Compensation Plans |
Equivalent distribution entitled to be received when earned (as a percent) | 94.10%
AAP |
Equity-Indexed Compensation Plans |
Common units to be issued | 0.941

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- Definition The percentage of the distribution paid by AAP to an AAP unit on a quarterly basis that each AAP Management Unit will be entitled to receive once earned. + References No definition available. + Details
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Namespace Prefix: | paa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Unearned Units + References No definition available. + Details
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Namespace Prefix: | paa_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Ratio applied to determine the number of units or shares that would be received by holders choosing to convert or exchange one class of units or shares into another, as specified. + References No definition available. + Details
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Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

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- Definition The number of common units to be issued for each AAP Management Unit once earned. + References No definition available. + Details
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Namespace Prefix: | paa_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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Balance Type: | na
Period Type: | instant

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- Details
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