v3.25.2
Cover Page - shares
6 Months Ended
Jun. 30, 2025
Jul. 21, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Entity File Number 1-10667  
Entity Registrant Name General Motors Financial Company, Inc.  
Entity Incorporation, State or Country Code TX  
Entity Tax Identification Number 75-2291093  
Entity Address, Address Line One 801 Cherry Street  
Entity Address, Address Line Two Suite 3500  
Entity Address, City or Town Fort Worth  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 76102  
City Area Code 817  
Local Phone Number 302-7000  
Title of 12(b) Security 5.250% Senior Notes due 2026  
Trading Symbol GM/26  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   5,050,000
Amendment Flag false  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Entity Central Index Key 0000804269  
Current Fiscal Year End Date --12-31