v3.26.3
Document and Entity Information
Sep. 25, 2026
Document And Entity Information [Line Items]  
Entity Registrant Name ExxonMobil Holdings Corp
Amendment Flag false
Entity Central Index Key 0002115436
Document Type 8-K
Document Period End Date Sep. 25, 2026
Entity Incorporation State Country Code TX
Entity File Number 1-43384
Entity Tax Identification Number 41-4104094
Entity Address, Address Line One 22777 Springwoods
Entity Address, Address Line Two Village Parkway
Entity Address, City or Town Spring
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77389-1425
City Area Code (972)
Local Phone Number 940-6000
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock [Member]  
Document And Entity Information [Line Items]  
Security 12b Title Common Stock, par value $0.001 per share
Trading Symbol XOM
Security Exchange Name NYSE
Zero Point Five Two Four Percent Notes Due 2028 [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 0.524% Notes due 2028
Trading Symbol XOM28
Security Exchange Name NYSE
Zero Point Five Two Four Percent Notes Due 2032 [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 0.835% Notes due 2032
Trading Symbol XOM32
Security Exchange Name NYSE
One Point Four Zero Eight Percent Notes Due 2039 [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 1.408% Notes due 2039
Trading Symbol XOM39A
Security Exchange Name NYSE