XML 65 R53.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Derivatives and Financial Instruments (Summary of Commodity Derivative Assets and Liabilities) (Details) - Commodity Derivatives [Member] - USD ($) $ in Millions | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Prepaid Expenses and Other Current Assets [Member] |  |  |
Fair value of commodity derivative assets and liabilities, without netting |  |  |
Commodity derivative assets, fair value gross | [1] | $ 612 | $ 2,607
Other Assets [Member] |  |  |
Fair value of commodity derivative assets and liabilities, without netting |  |  |
Commodity derivative assets, fair value gross | [1] | 20 | 5
Other Accruals [Member] |  |  |
Fair value of commodity derivative assets and liabilities, without netting |  |  |
Commodity derivative liabilities, fair value gross | [1] | 637 | 2,425
Other Liabilities and Deferred Credits [Member] |  |  |
Fair value of commodity derivative assets and liabilities, without netting |  |  |
Commodity derivative liabilities, fair value gross | [1] | $ 17 | $ 5
[1] | Hedge accounting has not been used for any item in the table.

X
- Definition Derivative assets liabilities at fair value gross by balance sheet classification. + References No definition available. + Details
Name: | psx_DerivativeAssetsLiabilitiesAtFairValueGrossByBalanceSheetClassificationAbstract
Namespace Prefix: | psx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value as of the balance sheet date of all price risk derivative assets not designated as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 + Details
Name: | us-gaap_PriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value as of the balance sheet date of all price risk derivative liabilities not designated as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 + Details
Name: | us-gaap_PriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CommodityContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=psx_OtherAccrualsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |