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Fair Value Measurements - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details) | Mar. 31, 2024
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Discount rate |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Investment in unconsolidated subsidiaries, measurement input | 0.25
Weighted average, measurement input | 0.00%
Other assets, measurement input | 0.25
Other assets, weighted average, measurement input | 0.00%
Contingent consideration measurement input | 0.05
Contingent consideration, weighted average, measurement input | 0.00%
Volatility |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Weighted average, measurement input | 38.00%
Contingent consideration measurement input | 0.21
Contingent consideration, weighted average, measurement input | 0.00%
Volatility | Minimum |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Investment in unconsolidated subsidiaries, measurement input | 0.35
Volatility | Maximum |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Investment in unconsolidated subsidiaries, measurement input | 0.65
Discount rate |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Investment in unconsolidated subsidiaries, measurement input | 0.25
Weighted average, measurement input | 0.00%

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- Definition Contingent Consideration Measurement Input + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

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- Definition Contingent consideration, Weighted Average, Measurement Input + References No definition available. + Details
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Namespace Prefix: | cbre_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Equity Method Investment, Weighted Average, Measurement Input + References No definition available. + Details
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Namespace Prefix: | cbre_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Other Assets, Measurement Input + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

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- Definition Other Assets, Weighted Average, Measurement Input + References No definition available. + Details
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Balance Type: | na
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- Definition Value of input used to measure investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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Balance Type: | na
Period Type: | instant

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- 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. + References No definition available. + Details
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Data Type: | xbrli:stringItemType
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Period Type: | duration

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- Details
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- Details
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- Details
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- Details
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- Details
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