| Document and Entity Information | Apr. 17, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Apr. 17, 2023 |
| Entity File Number | 001-41686 |
| Entity Registrant Name | Peakstone Realty Trust |
| Entity Central Index Key | 0001600626 |
| Entity Incorporation, State or Country Code | MD |
| Entity Tax Identification Number | 46-4654479 |
| Entity Address, Address Line One | 1520 E. Grand Avenue |
| Entity Address, City or Town | El Segundo |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 90245 |
| City Area Code | 310 |
| Local Phone Number | 606-3200 |
| Title of 12(b) Security | Common shares, $0.001 par value per share |
| Trading Symbol | PKST |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
