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Organization (Details)
ft² in Millions
9 Months Ended 12 Months Ended
Sep. 30, 2023
ft²
Real_Estate_Properties
yr
shares
Dec. 31, 2022
Real Estate Properties [Line Items]    
Restriction on redemption of OP units from date of issuance (years) | yr 1  
One OP unit is equivalent to one share of Common Stock (in shares) | shares 1  
OP unit conversion rate (in shares) | shares 1  
2012 OPP Units and Vested MYLTIPs    
Real Estate Properties [Line Items]    
Vesting Period 3 years  
Construction in Progress    
Real Estate Properties [Line Items]    
Number of real estate properties 11  
Net Rentable Area (in sf) | ft² 2.8  
Commercial Real Estate Properties [Member]    
Real Estate Properties [Line Items]    
Number of real estate properties 190  
Net Rentable Area (in sf) | ft² 53.5  
Office and Life Sciences Building [Member]    
Real Estate Properties [Line Items]    
Number of real estate properties 169  
Office and Life Sciences Building [Member] | Construction in Progress    
Real Estate Properties [Line Items]    
Number of real estate properties 8  
Retail Site [Member]    
Real Estate Properties [Line Items]    
Number of real estate properties 14  
Retail Site [Member] | Construction in Progress    
Real Estate Properties [Line Items]    
Number of real estate properties 2  
Residential Building    
Real Estate Properties [Line Items]    
Number of real estate properties 6  
Residential Building | Construction in Progress    
Real Estate Properties [Line Items]    
Number of real estate properties 1  
Hotel [Member]    
Real Estate Properties [Line Items]    
Number of real estate properties 1  
Boston Properties Limited Partnership    
Real Estate Properties [Line Items]    
General and limited partnership interest in the operating partnership (percent) 89.40% 89.60%