Eligible retirement age

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- Definition

Eligible Retirement Age, Years Of Service Requirement

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No definition available.

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- Definition

Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Longest Period for Recognition

+ References

No definition available.

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- Definition

Minimum Service Period to Avoid Award Forfeiture

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- Definition

Number of shares of common stock to be issued per stock unit

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No definition available.

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- Definition

Share-based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Performance Measurement Period

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Issued in Period, Fair Value

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Cash Settlement, Fair Value

+ References

No definition available.

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- Definition

Maximum term of the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date.

+ References

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of tax benefit from exercise of option under share-based payment arrangement.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2A
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- Definition

Amount of cash inflow from exercise of option under share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- 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.

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No definition available.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Percentage of vesting of award under share-based payment arrangement.

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- Definition

Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Share-Based Compensation Plans - Narrative (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2019 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.33%
Weighted-average grant date fair value, granted (in dollars per share) \| $ / shares	$ 12.06	$ 15.80	$ 17.58
Aggregate intrinsic value, exercised	$ 24	$ 21	$ 51
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option terms in years	10 years
Weighted-average remaining contractual terms of vested options	5 years 3 months
Weighted-average remaining contractual terms of exercisable options	4 years 10 months 28 days
Cash received from the exercise of options	$ 26
Tax benefit from the exercise of options	3
Unrecognized compensation expense from unvested awards held by employees	$ 4
Weighted-average period for recognition of unrecognized compensation expense from unvested awards	21 months
Longest period for recognition of unrecognized compensation expense from unvested awards	25 months
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense from unvested awards held by employees	$ 75
Weighted-average period for recognition of unrecognized compensation expense from unvested awards	14 months
Longest period for recognition of unrecognized compensation expense from unvested awards	38 months
Number of shares of common stock to be issued per stock unit (in shares) \| shares	1
Units, granted (in dollars per share) \| $ / shares	$ 75.91	$ 83.48	$ 95.16
Aggregate fair value, Issued shares	$ 61	$ 69	$ 80
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock to be issued per stock unit (in shares) \| shares	1
Units, granted (in dollars per share) \| $ / shares	$ 68.18	$ 112.73	$ 87.42
Aggregate fair value, Issued shares	$ 12	$ 41	$ 44
Performance measurement period	3 years
Fair value of cash settled units	$ 27	$ 63	$ 25
Employees Eligible for Retirement \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	6 months
Employees Eligible for Retirement \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	6 months
Awards Vesting Ratably Over Three Years On Anniversary Of Grant Date \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
2013 Omnibus Stock And Performance Incentive Plan Of Phillips 66
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issuable under P66 Omnibus Plan, maximum (in shares) \| shares	45,000,000
Minimum time required for an award not to be subject to forfeiture	6 months
Eligible retirement age	55
Years of service	5 years
2013 Omnibus Stock And Performance Incentive Plan Of Phillips 66 \| Cliff Vesting \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years