Real Estate Schedule of Real Estate Properties (Details) - USD ($) $ in Thousands		Jun. 30, 2023	Dec. 31, 2022
Real Estate Properties [Line Items]
Land		$ 5,189,287	$ 5,189,811
Right-of-use assets - finance leases		237,526	237,510
Right of use assets - operating leases		166,421	167,351
Land held for future development	[1]	637,191	721,501
Buildings and improvements		16,054,447	15,820,724
Tenant improvements		3,345,766	3,200,743
Furniture, Fixtures and Equipment		53,181	50,310
Construction in progress		482,850	406,574
Total		26,166,669	25,794,524
Less: accumulated depreciation		(6,568,568)	(6,298,082)
Total real estate		19,598,101	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		237,526	237,510
Right of use assets - operating leases		166,421	167,351
Land held for future development	[1]	637,191	721,501
Buildings and improvements		15,782,891	15,547,919
Tenant improvements		3,345,766	3,200,743
Furniture, Fixtures and Equipment		53,181	50,310
Construction in progress		482,850	406,574
Total		25,800,404	25,427,010
Less: accumulated depreciation		(6,448,665)	(6,180,474)
Total real estate		$ 19,351,739	$ 19,246,536

[1] Includes pre-development costs.