Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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Name:	us-gaap_SeveranceCosts1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Leadership Changes and the New Service Model (Details) - USD ($) $ in Millions		3 Months Ended	20 Months Ended
	Feb. 09, 2018	Mar. 31, 2019	Sep. 30, 2019
Former President
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
The period for payment of restructuring costs.	39 months
RE/MAX Franchising \| President \| Separation And Transition Agreement \| Selling, General and Administrative Expenses
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Incurred cost under Separation Agreement	$ 1.8
RE/MAX Franchising \| Restructuring Plan \| Selling, General and Administrative Expenses
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Severance and other related expenses			$ 2.1
RE/MAX Franchising \| Restructuring Plan \| Former Employees \| Selling, General and Administrative Expenses
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Severance and other related expenses		$ 0.7