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Goodwill (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013
Changes in goodwill |  |
Balance at beginning of period | $ 2,503 us-gaap_Goodwill | $ 2,535 us-gaap_Goodwill
Acquisitions | 1 us-gaap_GoodwillAcquiredDuringPeriod | 6 us-gaap_GoodwillAcquiredDuringPeriod
Foreign currency translation adjustments | (39)us-gaap_GoodwillTranslationAdjustments | (33)us-gaap_GoodwillTranslationAdjustments
Purchase price accounting adjustments and other |  | (5)paa_GoodwillPurchasePriceAccountingAndOtherAdjustments
Balance at end of period | 2,465 us-gaap_Goodwill | 2,503 us-gaap_Goodwill
Transportation |  |
Changes in goodwill |  |
Balance at beginning of period | 878 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentPipelineTariffActivitiesTruckingMember | 897 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentPipelineTariffActivitiesTruckingMember
Acquisitions |  | 6 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentPipelineTariffActivitiesTruckingMember
Foreign currency translation adjustments | (24)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentPipelineTariffActivitiesTruckingMember | (20)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentPipelineTariffActivitiesTruckingMember
Purchase price accounting adjustments and other |  | (5)paa_GoodwillPurchasePriceAccountingAndOtherAdjustments / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentPipelineTariffActivitiesTruckingMember
Balance at end of period | 854 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentPipelineTariffActivitiesTruckingMember | 878 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentPipelineTariffActivitiesTruckingMember
Facilities |  |
Changes in goodwill |  |
Balance at beginning of period | 1,162 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentStorageTerminallingProcessingMember | 1,171 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentStorageTerminallingProcessingMember
Acquisitions | 1 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentStorageTerminallingProcessingMember |
Foreign currency translation adjustments | (11)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentStorageTerminallingProcessingMember | (9)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentStorageTerminallingProcessingMember
Balance at end of period | 1,152 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentStorageTerminallingProcessingMember | 1,162 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentStorageTerminallingProcessingMember
Supply and Logistics |  |
Changes in goodwill |  |
Balance at beginning of period | 463 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentSalesAndLogisticsMember | 467 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentSalesAndLogisticsMember
Foreign currency translation adjustments | (4)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentSalesAndLogisticsMember | (4)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentSalesAndLogisticsMember
Balance at end of period | $ 459 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentSalesAndLogisticsMember | $ 463 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = paa_SegmentSalesAndLogisticsMember

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- Definition Represents the purchase price accounting adjustments and other required to revise the carrying amount of goodwill to fair value. + References No definition available. + Details
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Balance Type: | debit
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Details
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- Definition Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Details
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- Details
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Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |