Real Estate Schedule of Real Estate Properties (Details) - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023
Real Estate Properties [Line Items]
Land		$ 5,317,032	$ 5,251,224
Right-of-use assets - finance leases		401,486	401,680
Operating Lease, Right-of-Use Asset	[1]	344,255	324,298
Land held for future development	[2]	661,713	697,061
Buildings and improvements		16,689,571	16,607,756
Tenant improvements		3,654,576	3,592,172
Furniture, Fixtures and Equipment		54,691	53,716
Construction in progress		685,465	547,280
Total		27,808,789	27,475,187
Less: accumulated depreciation		(7,040,501)	(6,881,728)
Total real estate		20,768,288	20,593,459
Boston Properties Limited Partnership
Real Estate Properties [Line Items]
Land		5,222,323	5,156,515
Right-of-use assets - finance leases		401,486	401,680
Operating Lease, Right-of-Use Asset	[1]	344,255	324,298
Land held for future development	[2]	661,713	697,061
Buildings and improvements		16,418,015	16,336,200
Tenant improvements		3,654,576	3,592,172
Furniture, Fixtures and Equipment		54,691	53,716
Construction in progress		685,465	547,280
Total		27,442,524	27,108,922
Less: accumulated depreciation		(6,915,437)	(6,758,361)
Total real estate		$ 20,527,087	$ 20,350,561

[1] See Note 4.

[2] Includes pre-development costs.