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Goodwill (Details) (USD $) In Millions | 6 Months Ended
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Jun. 30, 2011
Changes in goodwill |
Balance at beginning of period | $ 1,376
Southern Pines acquisition | 301
Purchase price accounting adjustments | 10
Foreign currency translation adjustments | 8
Other | (3)
Balance at end of period | 1,692
Transportation |
Changes in goodwill |
Balance at beginning of period | 640
Foreign currency translation adjustments | 7
Balance at end of period | 647
Facilities |
Changes in goodwill |
Balance at beginning of period | 308
Southern Pines acquisition | 301
Balance at end of period | 609
Supply and Logistics |
Changes in goodwill |
Balance at beginning of period | 428
Purchase price accounting adjustments | 10
Foreign currency translation adjustments | 1
Other | (3)
Balance at end of period | $ 436

X
- Definition Other increases or decreases during the reporting period in the carrying value of goodwill that are not separately disclosed. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Reflects net changes to the recorded value of goodwill for foreign currency translation adjustments needed to revise the carrying amount of goodwill to fair value. + Details
Name: | paa_GoodwillTranslationAdjustments
Namespace Prefix: | paa
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Carrying amount as of the balance sheet date, which is the cumulative amount paid, adjusted for any amortization recognized prior to adoption of FAS 142 and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 43 + Details
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Balance Type: | debit
Period Type: | instant

X
- Definition The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e(1) + Details
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Balance Type: | debit
Period Type: | duration

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- Definition Purchase price allocation adjustment for allocation not yet complete at the prior year end. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + Details
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Namespace Prefix: | us-gaap
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Balance Type: | na
Period Type: | duration