| Document and Entity Information | Dec. 06, 2021 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001828723 |
| Document Type | 8-K |
| Document Period End Date | Dec. 6, 2021 |
| Entity Registrant Name | CBRE ACQUISITION HOLDINGS, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39798 |
| Entity Tax Identification Number | 85-3448396 |
| Entity Address, Address Line One | 2100 McKinney |
| Entity Address, Address Line Two | Avenue |
| Entity Address, Address Line Three | Suite 1250 |
| Entity Address, City or Town | Dallas |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 75201 |
| City Area Code | (214) |
| Local Phone Number | 979-6100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Class A Common Stock And Warrants [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | SAILSM (Stakeholder Aligned Initial Listing) securities, each consisting of one share of Class A Common Stock, $0.0001 par value, and one-fourth of |
| Trading Symbol | CBAH.U |
| Security Exchange Name | NYSE |
| Defined Benefit Plan, Equity Securities, Class A Common Stock, Employer, Related Party [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A Common Stock included as part of theSAILSM securities |
| Trading Symbol | CBAH |
| Security Exchange Name | NYSE |
| Warrant [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Warrants included as part of the SAILSMsecurities, each whole warrant exercisable forone share of Class A Common Stock atan exercise price of $11.00 |
| Trading Symbol | CBAH WS |
| Security Exchange Name | NYSE |
