Real Estate Schedule of Real Estate Properties (Details) - USD ($) $ in Thousands		Sep. 30, 2023	Dec. 31, 2022
Real Estate Properties [Line Items]
Land		$ 5,200,195	$ 5,189,811
Right-of-use assets - finance leases		237,532	237,510
Right of use assets - operating leases (amounts related to VIEs of $156,940 and $0 at September 30, 2023 and December 31, 2022, respectively)	[1]	322,790	167,351
Land held for future development	[2]	670,691	721,501
Buildings and improvements		16,112,969	15,820,724
Tenant improvements		3,442,669	3,200,743
Furniture, Fixtures and Equipment		53,536	50,310
Construction in progress		551,330	406,574
Total		26,591,712	25,794,524
Less: accumulated depreciation		(6,723,616)	(6,298,082)
Total real estate		19,868,096	19,496,442
Boston Properties Limited Partnership
Real Estate Properties [Line Items]
Land		5,105,486	5,095,102
Right-of-use assets - finance leases		237,532	237,510
Right of use assets - operating leases (amounts related to VIEs of $156,940 and $0 at September 30, 2023 and December 31, 2022, respectively)	[1]	322,790	167,351
Land held for future development	[2]	670,691	721,501
Buildings and improvements		15,841,413	15,547,919
Tenant improvements		3,442,669	3,200,743
Furniture, Fixtures and Equipment		53,536	50,310
Construction in progress		551,330	406,574
Total		26,225,447	25,427,010
Less: accumulated depreciation		(6,601,957)	(6,180,474)
Total real estate		$ 19,623,490	$ 19,246,536

[1] See Note 4.

[2] Includes pre-development costs.