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Equity Compensation Plans (Details 2) (USD $) | 1 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended
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Feb. 28, 2013 Special PAA Awards | Feb. 28, 2013 Special PAA Awards PNG | Feb. 28, 2013 Special PAA Awards Awards with a vesting date of August 2018 | Feb. 28, 2013 Special PAA Awards Awards with a vesting date of August 2018 PNG | Feb. 28, 2013 Special PAA Awards Awards with a vesting date of August 2019 | Feb. 28, 2013 Special PAA Awards Awards with a vesting date of August 2019 PNG | Mar. 31, 2013 PAA Long-term Incentive Plan Awards | Feb. 28, 2013 PAA Long-term Incentive Plan Awards Equity Awards | Feb. 28, 2013 PAA Long-term Incentive Plan Awards Equity Awards Awards with a minimum vesting date of August 2016 | Feb. 28, 2013 PAA Long-term Incentive Plan Awards Equity Awards Awards with a minimum vesting date of August 2017 | Feb. 28, 2013 PAA Long-term Incentive Plan Awards Equity Awards Awards with a minimum vesting date of August 2018 | Feb. 28, 2013 PAA Long-term Incentive Plan Awards Liability Awards | Mar. 31, 2013 PNG LTIP Awards Including Transaction Grants
Share-based Compensation Arrangement, by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |  |  |
Awards that will vest upon satisfaction of performance and/or service conditions (as a percent) |  |  | 50.00% |  | 50.00% |  |  |  | 33.00% | 33.00% | 33.00% |  |
Annualized distribution threshold for vesting of awards (in dollars per share) |  |  |  | $ 1.48 |  | $ 1.43 |  |  | $ 2.35 | $ 2.50 | $ 2.65 |  |
Period prior to each vesting date for which the average annualized distribution threshold must be maintained for vesting of awards |  |  |  | 12 months |  | 12 months |  |  |  |  |  |  |
Annualized distribution threshold for vesting of DERs (in dollars per share) | $ 2.40 | $ 1.43 |  |  |  |  |  |  |  |  |  |  |
DERs that will vest upon satisfaction of performance and/or service conditions (as a percent) |  |  |  |  |  |  |  | 33.00% |  |  |  |  |
Annualized quarterly distribution, low end of range (in dollars per unit) |  |  |  |  |  |  |  |  |  |  |  | $ 2.30 |
Annualized quarterly distribution, high end of range (in dollars per unit) |  |  |  |  |  |  |  |  |  |  |  | $ 2.50 |
Number of awards granted with associated distribution equivalent rights (in shares) |  |  |  |  |  |  |  |  |  |  |  | 0 |
Outstanding (in units) |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at beginning of period (in units) |  |  |  |  |  |  | 6,000,000 |  |  |  |  |  | 900,000
Granted (in units) | 143,000 |  |  |  |  |  | 4,100,000 | 2,700,000 |  |  |  | 1,200,000 | 400,000
Cancelled or forfeited (in units) |  |  |  |  |  |  | (100,000) |  |  |  |  |  |
Outstanding at end of period (in units) |  |  |  |  |  |  | 10,000,000 |  |  |  |  |  | 1,300,000
Weighted Average Grant Date Fair Value per unit |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at beginning of period (in dollars per unit) |  |  |  |  |  |  | $ 25.55 |  |  |  |  |  | $ 17.49
Granted (in dollars per unit) |  |  |  |  |  |  | $ 47.04 |  |  |  |  |  | $ 17.42
Cancelled or forfeited (in dollars per unit) |  |  |  |  |  |  | $ 31.47 |  |  |  |  |  |
Outstanding at end of period (in dollars per unit) |  |  |  |  |  |  | $ 34.24 |  |  |  |  |  | $ 17.47

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- Definition Percentage of awards that will vest upon satisfaction of applicable performance and service conditions. + References No definition available. + Details
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- Definition Percentage of distribution equivalent rights that will vest upon satisfaction of applicable performance and/or service conditions. + References No definition available. + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(e) -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. + Details
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -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. + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(1) -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 FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -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. + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(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 FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(a) -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. + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(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 FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(a) -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. + Details
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