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Real Estate Schedule of Real Estate Properties (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Real Estate Properties [Line Items] |  |  |
Land |  | $ 5,200,195 | $ 5,189,811
Right-of-use assets - finance leases |  | 237,532 | 237,510
Right of use assets - operating leases (amounts related to VIEs of $156,940 and $0 at September 30, 2023 and December 31, 2022, respectively) | [1] | 322,790 | 167,351
Land held for future development | [2] | 670,691 | 721,501
Buildings and improvements |  | 16,112,969 | 15,820,724
Tenant improvements |  | 3,442,669 | 3,200,743
Furniture, Fixtures and Equipment |  | 53,536 | 50,310
Construction in progress |  | 551,330 | 406,574
Total |  | 26,591,712 | 25,794,524
Less: accumulated depreciation |  | (6,723,616) | (6,298,082)
Total real estate |  | 19,868,096 | 19,496,442
Boston Properties Limited Partnership |  |  |
Real Estate Properties [Line Items] |  |  |
Land |  | 5,105,486 | 5,095,102
Right-of-use assets - finance leases |  | 237,532 | 237,510
Right of use assets - operating leases (amounts related to VIEs of $156,940 and $0 at September 30, 2023 and December 31, 2022, respectively) | [1] | 322,790 | 167,351
Land held for future development | [2] | 670,691 | 721,501
Buildings and improvements |  | 15,841,413 | 15,547,919
Tenant improvements |  | 3,442,669 | 3,200,743
Furniture, Fixtures and Equipment |  | 53,536 | 50,310
Construction in progress |  | 551,330 | 406,574
Total |  | 26,225,447 | 25,427,010
Less: accumulated depreciation |  | (6,601,957) | (6,180,474)
Total real estate |  | $ 19,623,490 | $ 19,246,536
[1] | See Note 4.
[2] | Includes pre-development costs.

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- Definition Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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