Cover Page - shares	3 Months Ended
	Mar. 31, 2021	Apr. 16, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	001-35004
Entity Registrant Name	FLEETCOR Technologies, Inc
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	72-1074903
Entity Address, Address Line One	3280 Peachtree Road
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30305
City Area Code	770
Local Phone Number	449-0479
Title of 12(b) Security	Common Stock
Trading Symbol	FLT
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		83,349,560
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001175454
Current Fiscal Year End Date	--12-31