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Reconciliation of Capital Expenditures from Segment to Consolidated (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Capital expenditures | $ 78 | $ 72 | $ 109
Segment Reporting, Reconciling Item, Corporate Nonsegment |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Capital expenditures | 17 | 13 | 16
Franchise Group | Operating Segments |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Capital expenditures | 26 | 28 | 42
Owned Brokerage Group | Operating Segments |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Capital expenditures | 28 | 24 | 40
Title Group | Operating Segments |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Capital expenditures | 7 | 7 | 11
Reportable Segment, Aggregation before Other Operating Segment | Operating Segments |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Capital expenditures | $ 61 | $ 59 | $ 93

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