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Acquisitions (Details) (USD $) | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Apr. 30, 2012 | Mar. 31, 2012 | Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011 | Apr. 02, 2012 barrel bcfperday plant mi barrelperday railcar
BP NGL Acquisition |  |  |  |  |  |  |
Business acquisition |  |  |  |  |  |  |
Interest acquried (as a percent) |  |  |  |  |  |  | 100.00%
Aggregate purchase price |  |  |  |  |  |  | $ 1,680,000,000
Imputed interest |  |  |  |  |  |  | 17,000,000
Contractual rights related to NGL pipelines acquired (in miles) |  |  |  |  |  |  | 2,600
NGL storage capacity acquired (in barrels) |  |  |  |  |  |  | 20,000,000
Number of fractionation plants acquired |  |  |  |  |  |  | 7
Aggregate net capacity of fractionation plants acquired (in barrels per day) |  |  |  |  |  |  | 232,000
Number of straddle plants acquired |  |  |  |  |  |  | 4
Number of field gas processing plants acquired |  |  |  |  |  |  | 2
Aggregate capacity of straddle and field gas processing plants acquired (in Bcf per day) |  |  |  |  |  |  | 6
Long-term and seasonal NGL inventories acquired (in barrels) |  |  |  |  |  |  | 8,000,000
Throughput capacity of third-party straddle plant long-term contract acquired (in Bcf per day) |  |  |  |  |  |  | 2.5
Number of rail cars under long-term leases acquired |  |  |  |  |  |  | 720
Period of sourcing services for gas supply will be provided after acquisition | 2 years |  |  |  |  |  |
Business acquisition, preliminary allocation of fair value of assets and liabilities |  |  |  |  |  |  |
Working capital |  |  |  |  |  |  | 253,000,000
Property and equipment |  |  |  |  |  |  | 1,067,000,000
Linefill |  |  |  |  |  |  | 84,000,000
Long-term inventory |  |  |  |  |  |  | 166,000,000
Intangible assets (contract) |  |  |  |  |  |  | 132,000,000
Goodwill |  |  |  |  |  |  | 233,000,000
Deferred tax liability |  |  |  |  |  |  | (233,000,000)
Environmental liability |  |  |  |  |  |  | (14,000,000)
Other long-term liabilities |  |  |  |  |  |  | (5,000,000)
Total net assets due to assets acquired |  |  | 1,683,000,000 |  | 1,683,000,000 |  | 1,683,000,000
Total assets due to assets acquired |  |  | 2,461,000,000 |  | 2,461,000,000 |  |
Net proceeds from issuance of common units and senior notes |  | 1,690,000,000 |  |  |  |  |
Acquisition-related costs |  |  | 13,000,000 |  | 13,000,000 |  |
Intangible assets, useful life |  |  |  |  |  |  |
Average Depreciable Life | 13 years |  |  |  |  |  |
Estimated amortization expense for the five full or partial calendar years |  |  |  |  |  |  |
2012 |  |  | 39,000,000 |  | 39,000,000 |  |
2013 |  |  | 30,000,000 |  | 30,000,000 |  |
2014 |  |  | 10,000,000 |  | 10,000,000 |  |
2015 |  |  | 8,000,000 |  | 8,000,000 |  |
2016 |  |  | 7,000,000 |  | 7,000,000 |  |
2017 |  |  | 6,000,000 |  | 6,000,000 |  |
Supplemental pro forma: |  |  |  |  |  |  |
Pro Forma, Total revenues |  |  | 9,354,000,000 | 9,185,000,000 | 29,182,000,000 | 27,726,000,000 |
Pro forma, Net income attributable to Plains |  |  | 165,000,000 | 333,000,000 | 772,000,000 | 836,000,000 |
Limited partner interest in net income attributable to Plains |  |  | 89,000,000 | 276,000,000 | 556,000,000 | 675,000,000 |
Pro forma, Basic (in dollars per unit) |  |  | $ 0.27 | $ 0.89 | $ 1.70 | $ 2.21 |
Pro forma, Diluted (in dollars per unit) |  |  | $ 0.27 | $ 0.88 | $ 1.69 | $ 2.20 |
BP NGL Acquisition | Transportation |  |  |  |  |  |  |
Business acquisition, preliminary allocation of fair value of assets and liabilities |  |  |  |  |  |  |
Total net assets due to assets acquired |  |  | 398,000,000 |  | 398,000,000 |  |
Total assets due to assets acquired |  |  | 555,000,000 |  | 555,000,000 |  |
BP NGL Acquisition | Facilities |  |  |  |  |  |  |
Business acquisition, preliminary allocation of fair value of assets and liabilities |  |  |  |  |  |  |
Total net assets due to assets acquired |  |  | 787,000,000 |  | 787,000,000 |  |
Total assets due to assets acquired |  |  | 1,061,000,000 |  | 1,061,000,000 |  |
BP NGL Acquisition | Supply and Logistics |  |  |  |  |  |  |
Business acquisition, preliminary allocation of fair value of assets and liabilities |  |  |  |  |  |  |
Total net assets due to assets acquired |  |  | 498,000,000 |  | 498,000,000 |  |
Total assets due to assets acquired |  |  | 845,000,000 |  | 845,000,000 |  |
BP NGL Acquisition | Minimum |  |  |  |  |  |  |
Property and equipment, useful life |  |  |  |  |  |  |
Average Depreciable Life | 5 years |  |  |  |  |  |
BP NGL Acquisition | Maximum |  |  |  |  |  |  |
Property and equipment, useful life |  |  |  |  |  |  |
Average Depreciable Life | 70 years |  |  |  |  |  |
Other Acquisitions |  |  |  |  |  |  |
Business acquisition |  |  |  |  |  |  |
Aggregate purchase price |  |  | 25,000,000 |  | 25,000,000 |  |
Business acquisition, preliminary allocation of fair value of assets and liabilities |  |  |  |  |  |  |
Goodwill |  |  | $ 10,000,000 |  | $ 10,000,000 |  |

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- Definition Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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