v3.25.2
Cover Page
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 0-12014
Entity Registrant Name IMPERIAL OIL LIMITED
Entity Incorporation, State or Country Code Z4
Entity Tax Identification Number 98-0017682
Entity Address, Address Line One 505 Quarry Park Boulevard S.E.
Entity Address, City or Town Calgary
Entity Address, State or Province AB
Entity Address, Country CA
Entity Address, Postal Zip Code T2C 5N1
City Area Code 800
Local Phone Number 567-3776
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 509,044,963
Amendment Flag false
Document Fiscal Year Focus 2025
Document Fiscal Period Focus Q2
Entity Central Index Key 0000049938
Current Fiscal Year End Date --12-31