XML 64 R76.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Noncontrolling Interests Common Units Distributions (Details) - Boston Properties Limited Partnership - $ / shares
Oct. 31, 2019
Jul. 31, 2019
Apr. 30, 2019
Jan. 30, 2019
Oct. 31, 2018
Jul. 31, 2018
Apr. 30, 2018
Jan. 30, 2018
Dec. 17, 2019
Dividends Payable [Line Items]                  
Distributions Declared To OP And LTIP Units Per Unit                 $ 0.98
Distributions Declared To MYLTIP Units Per Unit                 $ 0.098
Distributions made to OP and LTIP units per unit (in dollars per share) $ 0.95 $ 0.95 $ 0.95 $ 0.95 $ 0.95 $ 0.80 $ 0.80 $ 0.80  
Distributions Made To MYLTIP Units Per Unit $ 0.095 $ 0.095 $ 0.095 $ 0.095 $ 0.095 $ 0.080 $ 0.080 $ 0.080