v3.26.1
Cover Page - shares
3 Months Ended
Mar. 31, 2026
May 01, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 001-41686  
Entity Registrant Name Peakstone Realty Trust  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 46-4654479  
Entity Address, Address Line One 400 North Continental Boulevard  
Entity Address, Address Line Two Suite 200  
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 Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   37,233,536
Entity Central Index Key 0001600626  
Amendment Flag false  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --12-31