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Stockholders' Equity / Partners' Capital Stockholders' Equity / Partners' Capital Dividends / Distributions (Details) - $ / shares
May 15, 2017
Apr. 28, 2017
Feb. 15, 2017
Jan. 30, 2017
Jun. 16, 2017
Entity Information [Line Items]          
Dividends Payable, Amount Per Share / Unit         $ 0.75
Dividends, Per Share / Unit   $ 0.75   $ 0.75  
Boston Properties Limited Partnership          
Entity Information [Line Items]          
Dividends Payable, Amount Per Share / Unit         0.75
Dividends, Per Share / Unit   $ 0.75   $ 0.75  
Series B Cumulative Redeemable Preferred Stock [Member]          
Entity Information [Line Items]          
Dividends Payable, Amount Per Share / Unit         $ 32.8125
Dividends, Per Share / Unit $ 32.8125   $ 32.8125