Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 27, 2020	Jun. 30, 2019
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	1-6908
Entity Registrant Name	AMERICAN EXPRESS CREDIT CORP
Entity Central Index Key	0000004969
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	11-1988350
Entity Address, Address Line One	200 Vesey Street
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10285
City Area Code	212
Local Phone Number	640-2000
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Public Float			$ 0
Entity Common Stock, Shares Outstanding		1,504,938
Medium-Term Senior Notes Series [Member]
Entity Information [Line Items]
Title of 12(b) Security	2.375 percent Medium-Term Senior Notes Series F, due May 26, 2020
Trading Symbol	AXP/20
Security Exchange Name	NYSE
Senior Notes, due 2021 [Member]
Entity Information [Line Items]
Title of 12(b) Security	0.625 percent Senior Notes, due November 22, 2021
Trading Symbol	AXP/21
Security Exchange Name	NYSE