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Reconciliation of Other Segment Items from Segment to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Equity Method Investments	$ 169		$ 169		$ 182
Depreciation and amortization	48	$ 48	143	$ 151
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	14	12
Franchise Group | Operating Segments
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Equity Method Investments	0		0		0
Depreciation and amortization	30	29	90	88
Owned Brokerage Group | Operating Segments
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Equity Method Investments	33		33		31
Depreciation and amortization	11	13	31	36
Title Group | Operating Segments
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Equity Method Investments	136		136		151
Depreciation and amortization	2	2	8	15
Reportable Segment, Aggregation before Other Operating Segment | Operating Segments
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Equity Method Investments	169		169		$ 182
Depreciation and amortization	$ 43	$ 44	$ 129	$ 139

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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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-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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