Cover - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Jan. 31, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	1-4364
Entity Registrant Name	RYDER SYSTEM, INC.
Entity Incorporation, State or Country Code	FL
Entity Tax Identification Number	59-0739250
Entity Address, Address Line One	11690 N.W. 105th Street
Entity Address, City or Town	Miami,
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33178
City Area Code	(305)
Local Phone Number	500-3726
Title of 12(b) Security	Ryder System, Inc. Common Stock ($0.50 par value)
Trading Symbol	R
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	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1,955
Entity Common Stock, Shares Outstanding		53,697,961
Entity Central Index Key	0000085961
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY