v3.26.1
Document and Entity Information
Aug. 28, 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 Aug. 28, 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 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