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Debt (Details 3) (USD $) In Millions, unless otherwise specified | 9 Months Ended |  |  |  |  |  | 9 Months Ended |  |  | 9 Months Ended | 12 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2012 Senior secured hedged inventory facility | Jun. 30, 2012 Senior secured hedged inventory facility | May 31, 2012 Senior secured hedged inventory facility | Sep. 30, 2012 Letters of credit | Jun. 30, 2012 Letters of credit | May 31, 2012 Letters of credit | Sep. 30, 2012 PNG senior unsecured revolving credit facility maturing in August 2016 | Jun. 30, 2012 PNG senior unsecured revolving credit facility maturing in August 2016 | May 31, 2012 PNG senior unsecured revolving credit facility maturing in August 2016 | Sep. 30, 2012 PNG senior unsecured revolving credit facility maturing in August 2016 Minimum extension | Dec. 31, 2011 Terminated PAA senior unsecured 364-day revolving credit agreement | Sep. 30, 2012 Senior secured hedged inventory debt facility scheduled to mature in August 2014 Minimum extension
Debt |  |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity | $ 1,400 | $ 1,400 | $ 850 | $ 400 | $ 400 | $ 250 | $ 350 | $ 350 | $ 250 |  | $ 1,200 |
Period for activation of credit facility |  |  |  |  |  |  |  |  |  |  | 6 months |
Tenure of credit facility |  |  |  |  |  |  |  |  |  |  | 364 days |
Maximum borrowing capacity | $ 1,900 | $ 1,900 |  |  |  |  | $ 550 | $ 550 |  |  |  |
Credit facility extensions available |  |  |  |  |  |  |  |  |  | 1 |  | 1
Maturity date extension | 1 year |  |  |  |  |  |  |  |  |  |  |
Extension period subject to approval | 1 year |  |  |  |  |  | 1 year |  |  |  |  |

X
- Definition Period of extension that is provided for under the credit facility. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

X
- Definition Represents the period for activation of credit facility. + References No definition available. + Details
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Balance Type: | na
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X
- Definition This element represents the tenure of the line of credit facility. + References No definition available. + Details
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Balance Type: | na
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- Definition Period of extension of credit facility maturity date. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of one-year extensions provided for under the credit facility. + References No definition available. + Details
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Namespace Prefix: | paa_
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- Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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