(Common Units) (Narrative) (Details) $ / shares in Units, $ in Thousands		3 Months Ended
	Feb. 01, 2024 USD ($) shares	Mar. 31, 2024 USD ($) yr shares	Mar. 28, 2024 $ / shares	Dec. 31, 2023 USD ($)
Boston Properties Limited Partnership
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount | $		$ 1,300,409		$ 1,347,575
MYLTIP | Boston Properties Limited Partnership
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Vesting Period		3 years
Unvested MYLTIP Units [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
unvested MYLTIP distributions as compared to total distributions (percentage)		10.00%
MYLTIP 2021
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Final awards percentage of target	112.00%
Value of MYLTIP Awards | $	$ 12,600
Forfeitures, in units	155,625
OP Units [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
OP Units for redemption (in shares)		36,305
Restriction on redemption of OP Unit to Common Stock (in years) | yr		1
Redemption of OP Unit equivalent to Common Stock (in shares)		1
Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount | $		$ 1,300,000
Closing price of common stock (in dollars per share) | $ / shares			$ 65.31
Vested 2012 OPP units and MYLTIPS
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
OP Units for redemption (in shares)		22,155