Cover - USD ($)
$ in Billions

12 Months Ended

Dec. 31, 2019

Jan. 31, 2020

Jun. 28, 2019

Cover page.

Document Type

10-K

Document Annual Report

true

Document Period End Date

Dec. 31, 2019

Document Transition Report

false

Entity File Number

001-35349

Entity Registrant Name

Phillips 66

Entity Incorporation, State or Country Code

DE

Entity Tax Identification Number

45-3779385

Entity Address, Address Line One

2331 CityWest Blvd

Entity Address, City or Town

Houston

Entity Address, State or Province

TX

Entity Address, Postal Zip Code

77042

City Area Code

281

Local Phone Number

293-6600

Title of 12(b) Security

Common Stock, $0.01 Par Value

Trading Symbol

PSX

Security Exchange Name

NYSE

Entity Well-known Seasoned Issuer

Yes

Entity Voluntary Filers

No

Entity Current Reporting Status

Yes

Entity Interactive Data Current

Yes

Entity Filer Category

Large Accelerated Filer

Entity Small Business

false

Entity Emerging Growth Company

false

Entity Shell Company

false

Entity Public Float

$ 41.9

Entity Common Stock, Shares Outstanding

439,445,842

Documents Incorporated by Reference

Portions of the Proxy Statement for the Annual Meeting of Stockholders to be held on May 6, 2020 (Part III).

Entity Central Index Key

0001534701

Current Fiscal Year End Date

--12-31

Document Fiscal Year Focus

2019

Document Fiscal Period Focus

FY

Amendment Flag

false