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Noncontrolling Interests | 12 Months Ended
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Dec. 31, 2023
Noncontrolling Interest [Abstract] |
Noncontrolling Interest Disclosure [Text Block] | 10. Noncontrolling Interests Noncontrolling interests relate to the interests in BPLP not owned by BXP and interests in consolidated property partnerships not wholly-owned by the Company. As of December 31, 2023, the noncontrolling interests in BPLP consisted of 16,508,277 OP Units, 2,065,861 LTIP Units (including 480,511 LTIP Units earned by employees under the Company’s multi-year long-term incentive awards granted between 2012 and 2020 (i.e., 2012 OPP and 2013 - 2020 MYLTIP awards)), 349,267 2021 MYLTIP Units, 252,151 2022 MYLTIP Units and 322,053 2023 MYLTIP Units held by parties other than BXP. Noncontrolling Interest—Common Units During the years ended December 31, 2023 and 2022, 102,699 and 182,929 OP Units, respectively, were presented by the holders for redemption (including an aggregate of 94,863 and 78,249 OP Units, respectively, issued upon conversion of LTIP Units, 2012 OPP Units and MYLTIP Units) and were redeemed by BXP in exchange for an equal number of shares of Common Stock. At December 31, 2023, BPLP had outstanding 349,267 2021 MYLTIP Units, 252,151 2022 MYLTIP Units and 322,053 2023 MYLTIP Units. Prior to the end of the respective three-year performance period for each plan, holders of MYLTIP Units are entitled to receive per unit distributions equal to one-tenth (10%) of the regular quarterly distributions payable on an OP Unit, but will not be entitled to receive any special distributions. After the three-year performance period for each plan has ended, (1) the number of MYLTIP Units, both vested and unvested, that MYLTIP award recipients have earned, if any, based on the establishment of a performance pool, will be entitled to receive distributions in an amount per unit equal to distributions, both regular and special, payable on an OP Unit and (2) with respect to the 2021 - 2023 MYLTIP Units, the Company will make a “catch-up” cash payment on the MYLTIP Units that are ultimately earned in an amount equal to the regular and special dividends, if any, declared during the performance period on a number of shares of Common Stock agreed to the number of 2021 - 2023 MYLTIP Units that are earned, less the distributions actually paid during the performance period on all of the awarded 2021 - 2023 MYLTIP Units. On February 5, 2021, the measurement period for the Company’s 2018 MYLTIP awards ended and, based on BXP’s relative TSR performance, the final awards were determined to be 29.2% of target, or an aggregate of approximately $4.6 million (after giving effect to employee separations). As a result, an aggregate of 285,925 2018 MYLTIP Units that had been previously granted were automatically forfeited. On December 14, 2021, BPLP issued approximately 866,503 OP Units as partial consideration for the acquisition of 360 Park Avenue South in New York, New York. The OP Units issued totaled approximately $99.7 million based on the average closing price per share of BXP’s common stock for the five trading days immediately preceding the closing date. On February 4, 2022, the measurement period for the Company’s 2019 MYLTIP awards ended and, based on BXP’s relative TSR performance, the final payout was determined to be 69.0% of target, or an aggregate of approximately $8.6 million (after giving effect to employee separations). As a result, an aggregate of 144,043 2019 MYLTIP Units that had been previously granted were automatically forfeited. On February 3, 2023, the measurement period for the Company’s 2020 MYLTIP awards ended and, based on BXP’s relative TSR performance, the final payout was determined to be 50% of target, or an aggregate of approximately $3.8 million (after giving effect to employee separations). As a result, an aggregate of 152,460 2020 MYLTIP Units that had been previously granted were automatically forfeited. The following table presents BPLP’s distributions on the OP Units and LTIP Units (including the 2012 OPP Units, 2013 - 2019 MYLTIP Units and, after the February 3, 2023 measurement date, the 2020 MYLTIP Units) and its distributions on the 2020 MYLTIP Units (prior to the February 3, 2023 measurement date) and 2021 - 2023 MYLTIP Units (after the February 7, 2023 issuance date of the 2023 MYLTIP Units) that occurred during the year ended December 31, 2023:
Record Date |  | Payment Date |  | Distributions per OP Unit and LTIP Unit |  | Distributions per MYLTIP Unit
December 29, 2023 |  | January 30, 2024 |  | $0.98 |  |  | $0.098 |
September 29, 2023 |  | October 31, 2023 |  | $0.98 |  |  | $0.098 |
June 30, 2023 |  | July 31, 2023 |  | $0.98 |  |  | $0.098 |
March 31, 2023 |  | April 28, 2023 |  | $0.98 |  |  | $0.098 |
December 30, 2022 |  | January 30, 2023 |  | $0.98 |  |  | $0.098 |
The following table presents BPLP’s distributions on the OP Units and LTIP Units (including the 2012 OPP Units, 2013 - 2018 MYLTIP Units and, after the February 4, 2022 measurement date, the 2019 MYLTIP Units) and its distributions on the 2019 MYLTIP Units (prior to the February 4, 2022 measurement date) and 2020 - 2022 MYLTIP Units (after the February 1, 2022 issuance date of the 2022 MYLTIP Units) that occurred during the year ended December 31, 2022:
Record Date |  | Payment Date |  | Distributions per OP Unit and LTIP Unit |  | Distributions per MYLTIP Unit
December 30, 2022 |  | January 30, 2023 |  | $0.98 |  |  | $0.098 |
September 30, 2022 |  | October 31, 2022 |  | $0.98 |  |  | $0.098 |
June 30, 2022 |  | July 29, 2022 |  | $0.98 |  |  | $0.098 |
March 31, 2022 |  | April 29, 2022 |  | $0.98 |  |  | $0.098 |
December 31, 2021 |  | January 28, 2022 |  | $0.98 |  |  | $0.098 |
The following table presents BPLP’s distributions on the OP Units and LTIP Units (including the 2012 OPP Units, 2013 - 2017 MYLTIP Units and, after the February 5, 2021 measurement date, the 2018 MYLTIP Units) and its distributions on the 2018 MYLTIP Units (prior to the February 5, 2021 measurement date) and 2019 - 2021 MYLTIP Units (after the February 2, 2021 issuance date of the 2021 MYLTIP Units) that occurred during the year ended December 31, 2021:
Record Date |  | Payment Date |  | Distributions per OP Unit and LTIP Unit |  | Distributions per MYLTIP Unit
December 31, 2021 |  | January 28, 2022 |  | $0.98 |  |  | $0.098 |
September 30, 2021 |  | October 29, 2021 |  | $0.98 |  |  | $0.098 |
June 30, 2021 |  | July 30, 2021 |  | $0.98 |  |  | $0.098 |
March 31, 2021 |  | April 30, 2021 |  | $0.98 |  |  | $0.098 |
December 31, 2020 |  | January 28, 2021 |  | $0.98 |  |  | $0.098 |
A holder of an OP Unit may present the OP Unit to BPLP for redemption at any time (subject to restrictions agreed upon at the time of issuance of OP Units to particular holders that may restrict such redemption right for a period of time, generally one year from issuance). Upon presentation of an OP Unit for redemption, BPLP must redeem the OP Unit for cash equal to the then value of a share of Common Stock of BXP. BXP may, in its sole discretion, elect to assume and satisfy the redemption obligation by paying either cash or issuing one share of Common Stock. The value of the OP Units (other than OP Units owned by BXP), and LTIP Units (including the 2012 OPP Units and 2013 - 2020 MYLTIP Units), assuming in each case that all conditions had been met for the conversion thereof, had all of such units been redeemed at December 31, 2023 was approximately $1.3 billion based on the last reported price of a share of Common Stock on the New York Stock Exchange of $70.17 per share on December 29, 2023. Noncontrolling Interests—Property Partnerships The noncontrolling interests in property partnerships consist of the outside equity interests in ventures that are consolidated with the financial results of the Company because the Company exercises control over the entities that own the properties. The equity interests in these ventures that are not owned by the Company, totaling approximately $1.6 billion and $1.5 billion at December 31, 2023 and December 31, 2022, respectively, are included in Noncontrolling Interests—Property Partnerships on the accompanying Consolidated Balance Sheets. On July 28, 2023, the Company entered into a joint venture agreement with an institutional investor for the future development of 343 Madison Avenue located on Madison Avenue between 44th and 45th Streets in New York City, New York adjacent to Grand Central Station. Prior to the formation of the joint venture, the Company and the institutional investor were engaged in a collaborative arrangement. The Company owns a 55% interest in the joint venture and its partner owns a 45% interest, and the Company will provide customary development, property management, and leasing services. The joint venture partner contributed approximately $4.8 million in cash and $17.5 million in improvements and prepaid ground rent for their 45% ownership interest in the joint venture. The Company contributed approximately $5.9 million in cash and $21.4 million in improvements and prepaid ground rent for its 55% ownership interest in the joint venture. The transaction did not qualify as a sale of real estate for financial reporting purposes as the Company continues to effectively control this property and will continue to account for the property on a consolidated basis in its financial statements, s ee Note 4. On November 13, 2023, the Company entered into agreements to sell a 45% interest in 290 Binney Street and 300 Binney Street, two life sciences development projects located in Kendall Square in Cambridge, Massachusetts, to an institutional investor (See Note 3). Upon entry into the agreement, the Company completed the sale of a 45% interest in 300 Binney Street. The institutional investor funded approximately $212.9 million in cash at closing for its investment in 300 Binney Street, including future costs to fund completion of the development project. The Company will retain a 55% ownership interest in the joint venture and fund all remaining costs of the development. The Company has accounted for the transaction as an equity transaction and has recognized noncontrolling interest in its Consolidated Balance Sheets totaling approximately $35.5 million, which is equal to 45% of the aggregate carrying value of the total equity of the property immediately prior to the transaction. The difference between the cash proceeds received and the noncontrolling interest recognized, which was approximately $177.4 million, has been reflected as an increase in additional paid-in capital in the Company’s Consolidated Balance Sheets. The transaction did not qualify as a sale of real estate for financial reporting purposes as the Company continues to effectively control the property and thus will continue to account for the property on a consolidated basis in its financial statements and no gain was recognized in the Consolidated Statements of Operations. As the institutional investor pre-funded their contributions, it resulted in the partners’ equity balances not being proportionate to each partners’ ownership percentage. As a result, at the end of each reporting period, there will be a reallocation of the partners’ equity balances such that the ending balance in each partners’ capital account reflects each partners’ claim on net assets. These adjustments will impact additional paid-in capital and noncontrolling interest in property partnerships in the Company’s Consolidated Balance Sheets. For the period ended December 31, 2023, the adjustment was approximately $17.0 million. The Company will provide customary development, property management and leasing services to the joint venture.

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- Definition The entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 810 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//810/tableOfContent + Details
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