Real Estate Schedule of Real Estate Properties (Details) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Real Estate Properties [Line Items]
Land		$ 5,208,688	$ 5,061,169
Right-of-use assets - finance leases		237,505	237,507
Right of use assets - operating leases		167,935	169,778
Land held for future development	[1]	601,676	560,355
Buildings and improvements		15,598,033	14,291,214
Tenant improvements		3,061,686	2,894,025
Furniture, Fixtures and Equipment		52,126	51,695
Construction in progress		670,167	894,172
Total		25,597,816	24,159,915
Less: accumulated depreciation		(6,170,472)	(5,883,961)
Total real estate		19,427,344	18,275,954
Boston Properties Limited Partnership
Real Estate Properties [Line Items]
Land		5,113,979	4,964,986
Right-of-use assets - finance leases		237,505	237,507
Right of use assets - operating leases		167,935	169,778
Land held for future development	[1]	601,676	560,355
Buildings and improvements		15,325,228	14,014,010
Tenant improvements		3,061,686	2,894,025
Furniture, Fixtures and Equipment		52,126	51,695
Construction in progress		670,167	894,172
Total		25,230,302	23,786,528
Less: accumulated depreciation		(6,055,172)	(5,772,018)
Total real estate		$ 19,175,130	$ 18,014,510

[1] Includes pre-development costs.