v3.25.2
Cover
 6 Months Ended
Jun. 30, 2025
shares
Cover [Abstract]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Jun. 30, 2025
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 832
Local Phone Number 765-3010
Title of 12(b) Security Common Stock, $0.01 Par Value
Trading Symbol PSX
Security Exchange Name NYSE
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 Common Stock, Shares Outstanding 404,124,265
Entity Central Index Key 0001534701
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2025
Document Fiscal Period Focus Q2
Amendment Flag false