Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2023	Feb. 16, 2024
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
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 H,3.300% Notes Due 2024
Trading Symbol	CAT/24
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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 Public Float	$ 0
Entity Common Stock, Shares Outstanding		1
Entity Central Index Key	0000764764
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Amendment Flag	false
Document Financial Statement Error Correction [Flag]	false
ICFR Auditor Attestation Flag	true