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Reconciliation of Other Segment Items 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] |  |  |
Equity Method Investments | $ 182 | $ 178 |
Depreciation and amortization | 198 | 196 | $ 214
Segment Reporting, Reconciling Item, Corporate Nonsegment |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Equity Method Investments | 0 | 0 |
Depreciation and amortization | 17 | 18 | 21
Franchise Group | Operating Segments |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Equity Method Investments | 0 | 0 |
Depreciation and amortization | 117 | 114 | 119
Owned Brokerage Group | Operating Segments |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Equity Method Investments | 31 | 26 |
Depreciation and amortization | 46 | 52 | 63
Title Group | Operating Segments |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Equity Method Investments | 151 | 152 |
Depreciation and amortization | 18 | 12 | 11
Reportable Segment, Aggregation before Other Operating Segment | Operating Segments |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Equity Method Investments | 182 | 178 |
Depreciation and amortization | $ 181 | $ 178 | $ 193

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