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Acquisitions and Dispositions (Details) (USD $) | 12 Months Ended | 0 Months Ended | 1 Months Ended | 12 Months Ended | 0 Months Ended |  | 12 Months Ended | 0 Months Ended |  | 12 Months Ended | 0 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Apr. 02, 2012 BP NGL Acquisition | Mar. 31, 2012 BP NGL Acquisition | Dec. 31, 2013 BP NGL Acquisition | Dec. 31, 2012 BP NGL Acquisition | Dec. 31, 2013 BP NGL Acquisition Minimum | Dec. 31, 2013 BP NGL Acquisition Maximum | Dec. 12, 2012 railterminal | Dec. 31, 2012 | Dec. 31, 2013 2013 Acquisitions | Dec. 31, 2012 Other 2012 Acquisitions | Feb. 09, 2011 Southern Pines Acquisition | Dec. 31, 2011 Southern Pines Acquisition | Dec. 31, 2013 Southern Pines Acquisition Minimum | Dec. 31, 2013 Southern Pines Acquisition Maximum | Dec. 31, 2011 Other 2011 Acquisitions entity | Dec. 29, 2011 Western Acquisition transaction mi in | Nov. 29, 2011 Gardendale Gathering System Acquisition mi
Business acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest acquired (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  | 100.00%
Purchase Price |  |  |  | $ 1,680,000,000 |  |  |  |  |  | $ 503,000,000 |  | $ 19,000,000 | $ 150,000,000 | $ 765,000,000 |  |  |  | $ 20,000,000 | $ 220,000,000 | $ 349,000,000
Number of operating crude oil rail terminals acquired |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |  |  |  |  |  |
Number of terminals under development acquired |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |
Imputed interest |  |  |  | 17,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price net of cash and other working capital acquired |  |  |  |  |  |  |  |  |  |  |  |  |  | 750,000,000 |  |  |  |  |  |
Release of restricted cash previously held in escrow |  |  | (20,000,000) |  |  |  |  |  |  |  |  |  |  | (20,000,000) |  |  |  |  |  |
Number of transactions completed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |
Number of additional acquisitions completed (in entities) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 |  |
Pipelines acquired (in miles) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 82 | 120
Diameter of pipeline acquired (in inches) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16 |
Business acquisition, allocation of fair value of assets and liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Working capital |  |  |  |  |  |  | 241,000,000 |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |
Inventory |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14,000,000 |  |  | 2,000,000 |  |
Property and equipment |  |  |  |  |  |  | 1,081,000,000 |  |  |  | 76,000,000 |  |  |  | 340,000,000 |  |  | 280,000,000 |  |
Base Gas |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,000,000 |  |  |  |  |
Other working capital (including cash acquired) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,000,000 |  |  |  |  |
Cash acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,000,000 |  |  |  |  |
Linefill |  |  |  |  |  |  | 85,000,000 |  |  |  |  |  |  |  |  |  |  | 2,000,000 |  |
Other working capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (6,000,000) |  |
Long-term inventory |  |  |  |  |  |  | 165,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  | 130,000,000 |  |  |  |  |  |  |  | 92,000,000 |  |  | 142,000,000 |  |
Environmental liability |  |  |  |  |  |  | (14,000,000) |  |  |  |  |  |  |  |  |  |  | (9,000,000) |  |
Goodwill | 2,503,000,000 | 2,535,000,000 | 1,854,000,000 |  |  |  | 236,000,000 |  |  |  | 426,000,000 | 6,000,000 | 10,000,000 |  | 301,000,000 |  |  | 178,000,000 |  | 155,000,000
Deferred tax liability |  |  |  |  |  |  | (236,000,000) |  |  |  |  |  |  |  |  |  |  |  |  |
Other long-term liabilities |  |  |  |  |  |  | (5,000,000) |  |  |  |  |  |  |  |  |  |  |  |  |
Total net assets acquired |  |  |  |  |  |  | 1,683,000,000 |  |  |  |  |  |  |  | 765,000,000 |  |  | 589,000,000 |  |
Net proceeds from issuance of common units and senior notes |  |  |  |  | 1,690,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition-related costs |  |  |  |  |  |  | 13,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Property and equipment, useful life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average Depreciable Life |  |  |  |  |  |  |  | 5 years | 70 years |  |  |  |  |  |  | 5 years | 70 years |  |  |
Finite Lived Intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average Depreciable Life |  |  |  |  |  | 13 years |  |  |  |  |  |  |  |  |  | 2 years | 10 years |  |  |
Amortization under the declining balance method | 85,000,000 | 90,000,000 | 36,000,000 |  |  | 31,000,000 | 41,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Tax abatement included in amortizable intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,000,000 |  |  |  |  |
Contracts value included in amortizable intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 77,000,000 |  |  |  |  |
Estimated amortization expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 | 59,000,000 |  |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 | 52,000,000 |  |  |  |  | 8,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2016 | 45,000,000 |  |  |  |  | 7,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2017 | 42,000,000 |  |  |  |  | 6,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Supplemental pro forma: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pro Forma, Total revenues |  | 38,729,000,000 | 37,493,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pro forma, Net income attributable to PAA |  | 1,149,000,000 | 1,153,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pro forma, limited partner interest in net income attributable to PAA |  | $ 846,000,000 | $ 928,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pro forma, Basic net income per limited partner unit (in dollars per unit) |  | $ 2.57 | $ 3.01 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pro forma, Diluted net income per limited partner unit (in dollars per unit) |  | $ 2.55 | $ 2.99 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Represents the amount of acquisition cost of a business combination allocated to a contract value included in amortizable intangible assets. + References No definition available. + Details
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- Definition Represents the amount of acquisition cost of a business combination allocated to a tax abatement included in amortizable intangible assets. + References No definition available. + Details
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- Definition Amount of base gas recognized as of the acquisition date. + References No definition available. + Details
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- Definition Amount of other working capital recognized as of the acquisition date. + References No definition available. + Details
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- Definition Amount of working capital recognized as of the acquisition date. + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition. + References No definition available. + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
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- Definition The amount of inventory recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
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- Definition Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
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- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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