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Derivatives and Risk Management Activities (Details 3) In Millions, unless otherwise specified | Sep. 30, 2013 USD ($) | Sep. 30, 2013 Foreign exchange contracts USD ($) | Sep. 30, 2013 Foreign exchange contracts CAD | Sep. 30, 2013 Foreign exchange forward contracts maturing in 2013 USD ($) | Sep. 30, 2013 Foreign exchange forward contracts maturing in 2013 CAD | Sep. 30, 2013 Foreign exchange forward contracts that exchange CAD for USD at the rate USD 1.00 to CAD 1.03 maturing in 2013 USD ($) | Sep. 30, 2013 Foreign exchange forward contracts that exchange CAD for USD at the rate USD 1.00 to CAD 1.03 maturing in 2013 CAD | Sep. 30, 2013 Foreign exchange forward contracts that exchange CAD for USD at the rate USD 1.00 to CAD 1.03 maturing in 2014 USD ($) | Sep. 30, 2013 Foreign exchange forward contracts that exchange CAD for USD at the rate USD 1.00 to CAD 1.03 maturing in 2014 CAD | Sep. 30, 2013 Foreign exchange forward contracts that exchange CAD for USD at the rate USD 1.00 to CAD 1.04 maturing in 2015 USD ($) | Sep. 30, 2013 Foreign exchange forward contracts that exchange CAD for USD at the rate USD 1.00 to CAD 1.04 maturing in 2015 CAD | Sep. 30, 2013 Foreign exchange forward contracts that exchange CAD for USD at the rate USD 1.00 to CAD 1.03 USD ($) | Sep. 30, 2013 Foreign exchange forward contracts that exchange CAD for USD at the rate USD 1.00 to CAD 1.03 CAD | Sep. 30, 2013 Foreign exchange forward contract that exchange USD for CAD at the rate USD 1.00 to CAD 1.03 maturing in 2013 USD ($) | Sep. 30, 2013 Foreign exchange forward contract that exchange USD for CAD at the rate USD 1.00 to CAD 1.03 maturing in 2013 CAD | Sep. 30, 2013 Foreign exchange forward contract that exchange USD for CAD at the rate USD 1.00 to CAD 1.04 maturing in 2014 USD ($) | Sep. 30, 2013 Foreign exchange forward contract that exchange USD for CAD at the rate USD 1.00 to CAD 1.04 maturing in 2014 CAD | Sep. 30, 2013 Foreign exchange forward contract that exchange USD for CAD at the rate USD 1.00 to CAD 1.06 maturing in 2015 USD ($) | Sep. 30, 2013 Foreign exchange forward contract that exchange USD for CAD at the rate USD 1.00 to CAD 1.06 maturing in 2015 CAD | Sep. 30, 2013 Foreign exchange forward contract that exchange USD for CAD at the rate USD 1.00 to CAD 1.03 USD ($) | Sep. 30, 2013 Foreign exchange forward contract that exchange USD for CAD at the rate USD 1.00 to CAD 1.03 CAD
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Currency Exchange Rate Risk Hedging: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net deferred gains from currency risk rate hedging included in AOCI | $ 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of outstanding foreign currency forward exchange contracts |  | $ 2 | 2 | $ 2 | 2 | $ 283 | 292 | $ 104 | 108 | $ 9 | 9 | $ 396 | 409 | $ 281 | 290 | $ 104 | 108 | $ 9 | 9 | $ 394 | 407
Average exchange rate for outstanding foreign currency forward exchange contracts |  |  |  |  |  |  | 1.03 |  | 1.03 |  | 1.04 |  | 1.03 |  | 1.03 |  | 1.04 |  | 1.06 |  | 1.03

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- Definition This element represents the pre-tax gain or loss on open and settled foreign currency cash flow hedges, which are included in AOCI. + References No definition available. + Details
Name: | paa_GainLossOnForeignCurrencyCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncome
Namespace Prefix: | paa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Average contractual rate at which a foreign currency can be purchased or sold. + References No definition available. + Details
Name: | us-gaap_DerivativeAverageForwardExchangeRate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

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

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- Definition Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 + Details
Name: | us-gaap_NotionalAmountOfForeignCurrencyDerivatives
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant