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Noncontrolling Interests (Narrative) (Details) - Boston Properties Limited Partnership | Mar. 31, 2023 shares
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OP Units [Member] |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Noncontrolling Interest, Outstanding | 16,527,638
LTIP Units [Member] |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Noncontrolling Interest, Outstanding | 2,131,785
2012 OPP and 2013-2020 MYLTIP [Member] |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Noncontrolling Interest, Outstanding | 514,854
MYLTIP 2021 |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Noncontrolling Interest, Outstanding | 350,989
MYLTIP 2022 |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Noncontrolling Interest, Outstanding | 253,453
MYLTIP 2023 |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Noncontrolling Interest, Outstanding | 322,053

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