Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Jan. 31, 2022	Jun. 30, 2021
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2021
Entity File Number	001-36101
Entity Registrant Name	RE/MAX Holdings, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	80-0937145
Entity Address Line One	5075 South Syracuse Street
Entity Address City or Town	Denver
Entity Address State or Province	CO
Entity Address Postal Zip Code	80237
City Area Code	303
Local Phone Number	770-5531
Title of 12(b) Security	Class A Common Stock, par value $0.0001 per share
Trading Symbol	RMAX
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Auditor Name	KPMG LLP
Auditor Firm ID	185
Auditor Location	Denver, Colorado
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Central Index Key	0001581091
Amendment Flag	false
ICFR Auditor Attestation Flag	true
Entity Public Float			$ 611.5
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		18,898,703
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		1