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Debt (Details 3) (USD $) | 12 Months Ended |  |  |  |  |  |  | 12 Months Ended |  |  |  | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended
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Dec. 31, 2012 PAA senior secured hedged inventory facility | Jun. 30, 2012 PAA senior secured hedged inventory facility | May 31, 2012 PAA senior secured hedged inventory facility | Dec. 31, 2011 PAA senior secured hedged inventory facility | Dec. 31, 2012 Letters of credit | Jun. 30, 2012 Letters of credit | May 31, 2012 Letters of credit | Dec. 31, 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 | Dec. 31, 2011 PNG senior unsecured revolving credit facility maturing in August 2016 | Dec. 31, 2012 PNG senior unsecured revolving credit facility maturing in August 2016 Minimum extension | Dec. 31, 2012 PAA senior unsecured revolving credit facility maturing in August 2016 | Dec. 31, 2011 PAA senior unsecured revolving credit facility maturing in August 2016 | Aug. 31, 2011 PAA senior unsecured revolving credit facility maturing in August 2016 | Dec. 31, 2012 Canadian sub-facility | Aug. 31, 2011 Canadian sub-facility | Jun. 30, 2012 PNG GO Zone term loans item | Dec. 31, 2011 Terminated PAA senior unsecured 364-day revolving credit agreement | Aug. 31, 2011 Terminated PAA senior unsecured revolving credit facility maturing in July 2012 | Dec. 31, 2012 Senior secured hedged inventory debt facility scheduled to mature in August 2014 Minimum extension
Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing capacity | $ 1,400,000,000 | $ 1,400,000,000 | $ 850,000,000 |  | $ 400,000,000 | $ 400,000,000 | $ 250,000,000 | $ 350,000,000 | $ 350,000,000 | $ 250,000,000 |  |  | $ 1,600,000,000 |  | $ 1,600,000,000 | $ 600,000,000 | $ 600,000,000 |  | $ 1,200,000,000 | $ 1,600,000,000 |
Period for activation of credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 months |  |
Tenure of credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 364 days |  |
Maximum borrowing capacity | 1,900,000,000 | 1,900,000,000 |  |  |  |  |  | 550,000,000 | 550,000,000 |  |  |  | 2,100,000,000 |  | 2,100,000,000 |  |  |  |  |  |
Credit facility extensions available |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  | 1
Maturity date extension | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extension period subject to approval | 1 year |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings outstanding | 665,000,000 |  |  | 75,000,000 |  |  |  | 382,000,000 |  |  | 322,000,000 |  | 92,000,000 | 32,000,000 |  |  |  |  |  |  |
Acquisition period | 9 months |  |  |  |  |  |  |  |  |  |  |  | 9 months |  |  |  |  |  |  |  |
Threshold for acquisition period qualification | 150,000,000 |  |  |  |  |  |  |  |  |  |  |  | 150,000,000 |  |  |  |  |  |  |  |
Coverage ratio of EBITDA-to-interest, minimum |  |  |  |  |  |  |  | 3.00 |  |  |  |  |  |  |  |  |  |  |  |  |
Coverage ratio of debt-to-EBITDA, maximum | 5.00 |  |  |  |  |  |  | 5.00 |  |  |  |  | 5.00 |  |  |  |  |  |  |  |
Ratio of debt-to-EBITDA during acquisition period, maximum | 5.50 |  |  |  |  |  |  | 5.50 |  |  |  |  | 5.50 |  |  |  |  |  |  |  |
Basis Variable interest rate used | Eurocurrency Rate or the Base Rate |  |  |  |  |  |  | Eurodollar Rate or the Base Rate |  |  |  |  | Eurocurrency Rate or the Base Rate |  |  | Canadian Prime Rate |  |  |  |  |
Term Loans, amounts outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000 |  |  |
Number of term loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |

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- Definition Represents the period of time following a significant acquisition during which the debt-to-EBITDA coverage ratio covenant compliance requirement is modified. + References No definition available. + Details
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- Definition Represents the maximum ratio of debt to EBITDA (earnings before interest, taxes, depreciation and amortization) required to be maintained during acquisition period under credit facility. + References No definition available. + Details
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- Definition Represents the maximum ratio of debt to EBITDA (earnings before interest, taxes, depreciation and amortization) required to be maintained under credit facility. + References No definition available. + Details
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- Definition Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number APB14-1 -Paragraph 31 -Subparagraph b -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: 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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- 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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