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- Definition

Equity Method Investment, Effective Ownership Percent

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- Definition

Gain or loss on disposition of assets, including property, plant and equipment, tangible and intangible assets, and equity method investments.

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- Definition

Percentage investment the public holds of limited common units in the limited partnership (LP).

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No definition available.

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- Definition

Limited Liability Company LLC Or Limited Partnership LP Members Or Limited Partners Ownership Interest Held By Public, Shares

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- Definition

Limited Liability Company LLC Or Limited Partnership LP Members Or Limited Partners Ownership Interest, Shares

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- Definition

Percentage Of Ownership

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- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 272
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-Section 50
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- Definition

The cash outflow to reacquire preferred stock during the period.

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-Topic 230
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Number of shares that have been repurchased and retired during the period.

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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.

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No definition available.

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Phillips 66 Partners LP - Narrative (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2018
Subsidiary or Equity Method Investee [Line Items]
Net gain on dispositions			$ 2	$ 85	$ 2	$ 86
Gray Oak Pipeline LLC \| Third Party
Subsidiary or Equity Method Investee [Line Items]
Capital spending funded by joint venture partner						$ 61
Variable Interest Entity, Primary Beneficiary \| Phillips 66 Partners LP \| Gray Oak Pipeline LLC
Subsidiary or Equity Method Investee [Line Items]
Effective ownership percent	42.25%	42.25%	42.25%		42.25%
Preferred Units \| Phillips 66 Partners LP
Subsidiary or Equity Method Investee [Line Items]
Repurchase of preferred units (in shares)		368,528
Repurchase of preferred units		$ 24
Phillips 66 Partners LP
Subsidiary or Equity Method Investee [Line Items]
Limited partner interest in Phillips 66 Partners owned by public, percentage	26.00%
Phillips 66 Partners LP \| Variable Interest Entity, Primary Beneficiary
Subsidiary or Equity Method Investee [Line Items]
Limited partnership interest in Phillips 66 Partners, percentage	74.00%
Phillips 66 Partners LP \| Preferred Units \| Variable Interest Entity, Primary Beneficiary
Subsidiary or Equity Method Investee [Line Items]
Ownership interest (in shares)	13,500,000	13,500,000	13,500,000		13,500,000
Phillips 66 Partners LP \| Common Units \| Variable Interest Entity, Primary Beneficiary
Subsidiary or Equity Method Investee [Line Items]
Ownership interest (in shares)	170,000,000	170,000,000	170,000,000		170,000,000
Gray Oak Holdings LLC \| Third Party
Subsidiary or Equity Method Investee [Line Items]
Percentage of ownership	35.00%	35.00%	35.00%	35.00%	35.00%	35.00%	35.00%
Net gain on dispositions				$ 84
Gray Oak Holdings LLC \| Variable Interest Entity, Primary Beneficiary \| Phillips 66 Partners LP \| Gray Oak Pipeline LLC
Subsidiary or Equity Method Investee [Line Items]
Percentage of ownership	65.00%	65.00%	65.00%		65.00%