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v3.24.3

Acquisitions - Additional Information (Detail) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) vote | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Dec. 31, 2024 USD ($) | Mar. 31, 2024 | Dec. 31, 2023 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Payment to acquire business, net of cash acquired |  |  |  | $ 18.9 | $ (0.7) |  |  |  |  |
Total contingent consideration | $ 26.6 | $ 26.9 | $ 18.8 | 26.6 | 18.8 |  |  | $ 20.9 | $ 17.6 | $ 14.0
Goodwill | 234.1 |  |  | 234.1 |  |  |  | $ 209.8 |  |
Contingent liabilities undiscounted maximum payment | 39.7 |  |  | 39.7 |  |  |  |  |  |
Future consideration to be paid to the acquirees | 2.6 |  |  | 2.6 |  |  |  |  |  |
Compensation expenses, future services | 0.0 |  | $ 0.1 | 0.0 | $ 2.1 |  |  |  |  |
Residential Real Estate Brokerages, Title Insurance And Escrow Settlement Services Company |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Equity interest issued or issuable |  |  |  | 26.1 |  |  |  |  |  |
Payment to acquire business, net of cash acquired |  |  |  | 21.3 |  |  |  |  |  |
Deferred cash payment | 2.7 |  |  | 2.7 |  |  |  |  |  |
Total contingent consideration | 7.1 |  |  | 7.1 |  |  |  |  |  |
Recognized identifiable assets and liabilities assumed, other assets | 20.1 |  |  | 20.1 |  |  |  |  |  |
Recognized identifiable assets and liabilities assumed, other liabilities | 18.9 |  |  | 18.9 |  |  |  |  |  |
Goodwill | 24.9 |  |  | 24.9 |  |  |  |  |  |
Goodwill, expected tax deductible amount | $ 9.8 |  |  | $ 9.8 |  |  |  |  |  |
Residential Real Estate Brokerages, Title Insurance And Escrow Settlement Services Company | Minimum |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Useful life (in years) | 5 years |  |  | 5 years |  |  |  |  |  |
Residential Real Estate Brokerages, Title Insurance And Escrow Settlement Services Company | Maximum |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Useful life (in years) | 6 years |  |  | 6 years |  |  |  |  |  |
Residential Real Estate Brokerages, Title Insurance And Escrow Settlement Services Company | Forecast |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill, expected tax deductible amount |  |  |  |  |  | $ 17.0 |  |  |  |
Residential Real Estate Brokerages, Title Insurance And Escrow Settlement Services Company | Customer Relationships |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Recognized identifiable assets and liabilities assumed, intangible assets, other than goodwill | $ 28.7 |  |  | $ 28.7 |  |  |  |  |  |
Residential Real Estate Brokerages, Title Insurance And Escrow Settlement Services Company | Trademarks |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Recognized identifiable assets and liabilities assumed, intangible assets, other than goodwill | $ 2.4 |  |  | $ 2.4 |  |  |  |  |  |
Residential Real Estate Brokerages |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Number of businesses acquired | vote |  | 2 |  |  |  |  |  |  |  |
Title Insurance And Escrow Settlement Services Company |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership interest acquired (in percent) |  |  |  |  |  |  | 100.00% |  |  |
Latter & Blum Holdings, LLC |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership interest acquired (in percent) |  | 100.00% |  |  |  |  |  |  |  |
Parks Village Nashville, LLC |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership interest acquired (in percent) |  | 100.00% |  |  |  |  |  |  |  |

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