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Real Estate Schedule of Real Estate Properties (Details) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Real Estate Properties [Line Items]
Land		$ 5,177,647	$ 5,061,169
Right-of-use assets - finance leases		237,488	237,507
Right of use assets - operating leases		168,370	169,778
Land held for future development	[1]	583,700	560,355
Buildings and improvements		15,242,197	14,291,214
Tenant improvements		3,050,862	2,894,025
Furniture, Fixtures and Equipment		52,207	51,695
Construction in progress		593,958	894,172
Total		25,106,429	24,159,915
Less: accumulated depreciation		(6,077,270)	(5,883,961)
Total real estate		19,029,159	18,275,954
Boston Properties Limited Partnership
Real Estate Properties [Line Items]
Land		5,082,926	4,964,986
Right-of-use assets - finance leases		237,488	237,507
Right of use assets - operating leases		168,370	169,778
Land held for future development	[1]	583,700	560,355
Buildings and improvements		14,969,392	14,014,010
Tenant improvements		3,050,862	2,894,025
Furniture, Fixtures and Equipment		52,207	51,695
Construction in progress		593,958	894,172
Total		24,738,903	23,786,528
Less: accumulated depreciation		(5,963,676)	(5,772,018)
Total real estate		$ 18,775,227	$ 18,014,510
[1] Includes pre-development costs.

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Real Estate Investment Property At Cost Including Right of Use Assets

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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