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Inventory, Linefill and Base Gas and Long-term Inventory (Details) bbl in Thousands, Mcf in Thousands, $ in Millions | Mar. 31, 2018 USD ($) $ / Mcf $ / bbl Mcf bbl | Dec. 31, 2017 USD ($) $ / Mcf $ / bbl Mcf bbl
--- | --- | ---
Inventory by category |  |
Inventory | $ 620 | $ 713
Linefill and base gas | 870 | 872
Long-term inventory | 159 | 164
Total | 1,649 | 1,749
Crude oil |  |
Inventory by category |  |
Inventory | 494 | 402
Linefill and base gas | 719 | 719
Long-term inventory | $ 108 | $ 105
Inventory, Volumes (in barrels or in Mcf) | bbl | 9,171 | 7,800
Linefill and base gas, Volumes (in barrels or in Mcf) | bbl | 12,428 | 12,340
Long-term inventory, Volumes (in barrels or in Mcf) | bbl | 1,823 | 1,870
Inventory (Price/Unit of measure) | $ / bbl | 53.87 | 51.54
Linefill and base gas (Price/Unit of measure) | $ / bbl | 57.85 | 58.27
Long-term inventory (Price/Unit of measure) | $ / bbl | 59.24 | 56.15
NGL |  |
Inventory by category |  |
Inventory | $ 115 | $ 294
Linefill and base gas | 43 | 45
Long-term inventory | $ 51 | $ 59
Inventory, Volumes (in barrels or in Mcf) | bbl | 4,144 | 10,774
Linefill and base gas, Volumes (in barrels or in Mcf) | bbl | 1,596 | 1,597
Long-term inventory, Volumes (in barrels or in Mcf) | bbl | 1,989 | 2,167
Inventory (Price/Unit of measure) | $ / bbl | 27.75 | 27.29
Linefill and base gas (Price/Unit of measure) | $ / bbl | 26.94 | 28.18
Long-term inventory (Price/Unit of measure) | $ / bbl | 25.64 | 27.23
Natural gas |  |
Inventory by category |  |
Linefill and base gas | $ 108 | $ 108
Linefill and base gas, Volumes (in barrels or in Mcf) | Mcf | 24,976 | 24,976
Linefill and base gas (Price/Unit of measure) | $ / Mcf | 4.32 | 4.32
Other |  |
Inventory by category |  |
Inventory | $ 11 | $ 17

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- Definition This element represents the aggregate of current and non-current inventory, including linefill and base gas. + References No definition available. + Details
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Namespace Prefix: | paa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The volume of current inventory as of the balance sheet date. + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

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- Definition The volume of linefill and base gas inventory as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | paa_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

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- Definition The volume of noncurrent inventory as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | paa_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

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- Definition The weighted-average price per unit of current inventory. + References No definition available. + Details
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Balance Type: | na
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- Definition The weighted-average price per unit of linefill and base gas inventory. + References No definition available. + Details
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Namespace Prefix: | paa_
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- Definition The weighted-average price per unit of noncurrent inventory. + References No definition available. + Details
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- Definition Crude oil and NGL linefill in pipelines, tanks and caverns as well as base gas in natural gas storage facilities that are owned by the entity. Linefill and base gas are intended for long-term use. + References No definition available. + Details
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Namespace Prefix: | paa_
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Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68049868&loc=d3e3927-108312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765 + Details
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- Definition Inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(d)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Details
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