Real Estate Schedule of Real Estate Properties (Details) - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Real Estate Properties [Line Items]
Land		$ 5,189,287	$ 5,189,811
Right-of-use assets - finance leases		237,503	237,510
Right of use assets - operating leases		166,699	167,351
Land held for future development	[1]	626,137	721,501
Buildings and improvements		15,783,962	15,820,724
Tenant improvements		3,291,322	3,200,743
Furniture, Fixtures and Equipment		50,242	50,310
Construction in progress		618,770	406,574
Total		25,963,922	25,794,524
Less: accumulated depreciation		(6,424,547)	(6,298,082)
Total real estate		19,539,375	19,496,442
Boston Properties Limited Partnership
Real Estate Properties [Line Items]
Land		5,094,578	5,095,102
Right-of-use assets - finance leases		237,503	237,510
Right of use assets - operating leases		166,699	167,351
Land held for future development	[1]	626,137	721,501
Buildings and improvements		15,512,406	15,547,919
Tenant improvements		3,291,322	3,200,743
Furniture, Fixtures and Equipment		50,242	50,310
Construction in progress		618,770	406,574
Total		25,597,657	25,427,010
Less: accumulated depreciation		(6,306,326)	(6,180,474)
Total real estate		$ 19,291,331	$ 19,246,536

[1] Includes pre-development costs.