| Document and Entity Information | Aug. 25, 2021 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001828723 |
| Document Type | 8-K |
| Document Period End Date | Aug. 25, 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 Avenue |
| Entity Address, Address Line Two | 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 | true |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Sailsm Stakeholder Aligned Initial Listing Securities Each Consisting Ofone Share Of Class A Common Stock 0.0001 Par Value And One Fourth Ofone Redeemable Warrant [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | SAILSM (Stakeholder Aligned InitialListing) securities, each consisting ofone share of Class A Common Stock,$0.0001 par value, and one-fourth ofone |
| Trading Symbol | CBAH.U |
| Security Exchange Name | NYSE |
| Class 160 A 160 Common 160 Stock 160included 160as 160partbrof 160the 160 Sai Lsmall S Msmall 160securities [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A Common Stock included as partof the SAILSM securities |
| Trading Symbol | CBAH |
| Security Exchange Name | NYSE |
| Warrants Included As Part Of The SAILSM Securities Each Whole Warrantexercisable For One Share Of Class A Common Stock At An Exercise Price Of 11.00 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Warrants included as part of theSAILSM securities, each whole warrantexercisable for one share of Class ACommon Stock at an exercise price of$11.00 |
| Trading Symbol | CBAH WS |
| Security Exchange Name | NYSE |
