Real Estate Schedule of Real Estate Properties (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
Real Estate Properties [Line Items]
Land		$ 5,059,311	$ 5,061,169
Right-of-use assets - finance leases		237,501	237,507
Right of use assets - operating leases		169,248	169,778
Land held for future development	[1]	582,511	560,355
Buildings and improvements		14,410,242	14,291,214
Tenant improvements		2,951,838	2,894,025
Furniture, Fixtures and Equipment		51,549	51,695
Construction in progress		846,775	894,172
Total		24,308,975	24,159,915
Less: accumulated depreciation		(5,995,760)	(5,883,961)
Total real estate		18,313,215	18,275,954
Boston Properties Limited Partnership
Real Estate Properties [Line Items]
Land		4,963,374	4,964,986
Right-of-use assets - finance leases		237,501	237,507
Right of use assets - operating leases		169,248	169,778
Land held for future development	[1]	582,511	560,355
Buildings and improvements		14,133,781	14,014,010
Tenant improvements		2,951,838	2,894,025
Furniture, Fixtures and Equipment		51,549	51,695
Construction in progress		846,775	894,172
Total		23,936,577	23,786,528
Less: accumulated depreciation		(5,882,385)	(5,772,018)
Total real estate		$ 18,054,192	$ 18,014,510

[1] Includes pre-development costs.