XML 62 R51.htm IDEA: XBRL DOCUMENT v3.20.2

Investments, Loans and Long-Term Receivables (Gray Oak Pipeline, LLC) (Details) - USD ($)	Jun. 30, 2020	Jan. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Equity investments	$ 3,340,000,000		$ 2,961,000,000
Third Party | Gray Oak Holdings LLC
Schedule of Equity Method Investments [Line Items]
Percentage of ownership	35.00%			35.00%
Gray Oak Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Maximum loan		$ 1,379,000,000
Gray Oak Pipeline LLC | Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Effective ownership percent	42.25%
Maximum potential amount of future payments under the guarantees	$ 583,000,000
Equity investments	$ 896,000,000
Gray Oak Pipeline LLC | Phillips 66 Partners LP | Variable Interest Entity, Primary Beneficiary | Gray Oak Holdings LLC
Schedule of Equity Method Investments [Line Items]
Percentage of ownership	65.00%

X

- Definition

Equity Method Investment, Effective Ownership Percent

+ References

No definition available.

+ Details

Name:	psx_EquityMethodInvestmentEffectiveOwnershipPercent
Namespace Prefix:	psx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Maximum Loan, Amount with Co-venturers

+ References

No definition available.

+ Details

Name:	psx_MaximumLoanAmountWithCoVenturers
Namespace Prefix:	psx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Percentage Of Ownership

+ References

No definition available.

+ Details

Name:	psx_PercentageOfOwnership
Namespace Prefix:	psx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8813-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_EquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248

+ Details

Name:	us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=psx_Phillips66PartnersLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ConsolidatedEntitiesAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=psx_ThirdPartyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_OwnershipAxis=psx_GrayOakHoldingsLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=psx_GrayOakPipelineLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: