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Reconciliation of Capital Expenditures 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
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Capital Expenditures | $ 26 | $ 18 | $ 69 | $ 54
Segment Reporting, Reconciling Item, Corporate Non-Segment |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Capital Expenditures | 4 | 3 | 13 | 12
Franchise Group | Operating Segments |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Capital Expenditures | 11 | 7 | 28 | 20
Owned Brokerage Group | Operating Segments |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Capital Expenditures | 8 | 6 | 21 | 17
Title Group | Operating Segments |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Capital Expenditures | 3 | 2 | 7 | 5
Reportable Segment, Aggregation before Other Operating Segment | Operating Segments |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Capital Expenditures | $ 22 | $ 15 | $ 56 | $ 42

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