Acquisitions - Schedule of Preliminary Allocation of Purchase Price to the Estimated Fair Values of Net Assets Acquired (Details) - USD ($) $ in Millions |
Jun. 30, 2025 |
Jan. 13, 2025 |
Dec. 31, 2024 |
|---|---|---|---|
| Business Combination [Line Items] | |||
| Goodwill | $ 474.2 | $ 233.6 | |
| Christie's International Real Estate | |||
| Business Combination [Line Items] | |||
| Cash and cash equivalents | $ 3.5 | ||
| Accounts receivable | 14.6 | ||
| Other current assets | 5.5 | ||
| Property and equipment | 11.9 | ||
| Operating lease right-of-use assets | 20.2 | ||
| Other non-current assets | 8.1 | ||
| Goodwill | 230.0 | ||
| Intangible assets | 164.1 | ||
| Total assets | 457.9 | ||
| Accounts payable | (2.0) | ||
| Commissions payable | (6.3) | ||
| Accrued expenses and other current liabilities | (21.7) | ||
| Current lease liabilities | (4.9) | ||
| Non-current lease liabilities | (15.4) | ||
| Other non-current liabilities | (4.5) | ||
| Total liabilities | (54.8) | ||
| Net assets | $ 403.1 |
| X | ||||||||||
- Definition Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Liabilities And Current Liabilities, Other No definition available.
|
| X | ||||||||||
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Commissions Payable No definition available.
|
| X | ||||||||||
- Definition Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Lease Obligation, Current No definition available.
|
| X | ||||||||||
- Definition Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Lease Obligation, Noncurrent No definition available.
|
| X | ||||||||||
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease, Right-of-Use Asset No definition available.
|
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of asset acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cash and cash equivalent acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of asset acquired in business combination and recognized at acquisition date, classified as other and current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of receivable acquired in business combination and recognized at acquisition date, classified as current. Includes, but is not limited to, receivable from customer for product and service. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of accounts payable assumed in business combination and recognized at acquisition date, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of identifiable indefinite-lived intangible asset acquired in business combination and recognized at acquisition date. Excludes goodwill and financial asset. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of liability assumed in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of asset acquired in excess of (less than) liability assumed in business combination and recognized at acquisition date. Excludes goodwill. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of liability assumed in business combination and recognized at acquisition date, classified as other and noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of asset acquired in business combination and recognized at acquisition date, classified as other and noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of property, plant, and equipment acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Details
|