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ACQUISITIONS (Intangible Assets Acquired) (Details) - USD ($) $ in Millions		1 Months Ended
	May 24, 2021	Dec. 31, 2023
OnTheMarket
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value		$ 55.2
OnTheMarket | Customer base
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value		$ 42.0
Estimated Useful Life		8 years
OnTheMarket | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value		$ 10.2
Estimated Useful Life		15 years
OnTheMarket | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value		$ 3.0
Estimated Useful Life		2 years
Homes.com
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 53.4
Homes.com | Customer base
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 32.0
Estimated Useful Life	8 years
Homes.com | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 21.0
Estimated Useful Life	15 years
Homes.com | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 0.4
Estimated Useful Life	2 years

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482665/350-30-50-1

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