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Organization (Details)
ft² in Millions
9 Months Ended
Dec. 31, 2021
Sep. 30, 2022
ft²
Real_Estate_Properties
yr
shares
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
Construction in Progress    
Real Estate Properties [Line Items]    
Number of real estate properties   14
Net Rentable Area (in sf) | ft²   4.4
Commercial Real Estate Properties [Member]    
Real Estate Properties [Line Items]    
Number of real estate properties   193
Net Rentable Area (in sf) | ft²   53.5
Office Building [Member]    
Real Estate Properties [Line Items]    
Number of real estate properties   173
Office Building [Member] | Construction in Progress    
Real Estate Properties [Line Items]    
Number of real estate properties   12
Retail Site [Member]    
Real Estate Properties [Line Items]    
Number of real estate properties   12
Retail Site [Member] | Construction in Progress    
Real Estate Properties [Line Items]    
Number of real estate properties   1
Residential Building    
Real Estate Properties [Line Items]    
Number of real estate properties   7
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) 89.70% 89.60%