v3.25.2
Cover Page - shares
6 Months Ended
Jun. 30, 2025
Aug. 06, 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 001-11241  
Entity Registrant Name CATERPILLAR FINANCIAL SERVICES CORPORATION  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 37-1105865  
Entity Address, Address Line One 2120 West End Ave.  
Entity Address, City or Town Nashville  
Entity Address, State or Province TN  
Entity Address, Postal Zip Code 37203-0001  
City Area Code 615  
Local Phone Number 341-1000  
Title of 12(b) Security Medium-Term Notes, Series K,4.850% Notes Due 2029  
Trading Symbol CAT/29  
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   1
Entity Central Index Key 0000764764  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Amendment Flag false