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Reconciliation of Other Segment Items from Segment to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Equity Method Investments	$ 166		$ 166		$ 182
Depreciation and amortization	49	$ 48	95	$ 103
Segment Reporting, Reconciling Item, Corporate Non-Segment
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Equity Method Investments	0		0		0
Depreciation and amortization	5	4	9	8
Franchise Group | Operating Segments
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Equity Method Investments	0		0		0
Depreciation and amortization	31	30	60	59
Owned Brokerage Group | Operating Segments
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Equity Method Investments	32		32		31
Depreciation and amortization	10	11	20	23
Title Group | Operating Segments
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Equity Method Investments	134		134		151
Depreciation and amortization	3	3	6	13
Reportable Segment, Aggregation before Other Operating Segment | Operating Segments
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Equity Method Investments	166		166		$ 182
Depreciation and amortization	$ 44	$ 44	$ 86	$ 95

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
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-Paragraph 1
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
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