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Reconciliation of Capital Expenditures from Segment to Consolidated (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures	$ 95	$ 119	$ 105
Realogy Franchise Group
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures	27	32	23
Realogy Brokerage Group
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures	39	56	44
Realogy Title Group
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures	9	10	11
Corporate and Other
Segment Reporting, Other Significant Reconciling Item [Line Items]
Capital expenditures	$ 20	$ 21	$ 27

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585

+ Details

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- 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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