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Consolidated Statement of Capital and Noncontrolling Interests - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Common Stock, Shares, Outstanding | 156,726,430 | 156,136,000 | 156,726,430 | 156,136,000 | 156,712,000 | 156,544,849 | 156,074,000 |
Net activity from stock option and incentive plan, value | $ 18,025 | $ 12,897 | $ 36,946 | $ 51,364 |  |  |  |
Net activity from stock option and incentive plan, shares | 3,000 | 3,000 |  |  |  |  |  |
Preferred Stock Redemption Charge | $ 0 | $ 0 | 0 | (6,412) |  |  |  |
Conversion of redeemable partnership units | 11,000 | 59,000 |  |  |  |  |  |
Effective portion of interest rate contracts | $ 35 | $ 654 | 7,600 | 4,394 |  |  |  |
Amortization of interest rate contracts | 1,677 | 1,676 | 3,353 | 3,352 |  |  |  |
Contributions from noncontrolling interests in property partnerships |  | 2,139 | 849 | 2,420 |  |  |  |
Distributions to noncontrolling interests in property partnerships | $ (14,439) | $ (19,704) | $ (41,079) | $ (37,929) |  |  |  |
General Partner [Member] |  |  |  |  |  |  |  |
Common Stock, Shares, Outstanding | 1,750,000 | 1,737,000 | 1,750,000 | 1,737,000 | 1,749,000 | 1,746,000 | 1,737,000 | 1,731,000
Net activity from stock option and incentive plan, shares | 1,000 |  | 1,000 | 4,000 |  |  |  |
Conversion of redeemable partnership units |  |  | 3,000 | 2,000 |  |  |  |
Limited Partner [Member] |  |  |  |  |  |  |  |
Common Stock, Shares, Outstanding | 154,977,000 | 154,399,000 | 154,977,000 | 154,399,000 | 154,962,000 | 154,799,000 | 154,338,000 | 153,988,000
Net activity from stock option and incentive plan, shares | 4,000 | 2,000 | 29,000 | 235,000 |  |  |  |
Conversion of redeemable partnership units | 11,000 | 59,000 | 149,000 | 176,000 |  |  |  |
Partners' Capital (General and Limited Partners)[Member] |  |  |  |  |  |  |  |
Beginning Balance | $ 4,716,430 | $ 4,132,880 | $ 4,716,430 | $ 4,132,880 | $ 3,914,832 | $ 4,173,290 | $ 4,392,624 | $ 4,554,639
Contributions, value | 4,418 | (294) | 4,885 | 20,195 |  |  |  |
Allocated net income for the period | 228,088 | 113,508 | 373,556 | 214,609 |  |  |  |
Distributions | (153,592) | (153,013) | (307,169) | (305,966) |  |  |  |
Preferred Stock Redemption Charge |  |  |  | (6,412) |  |  |  |
Conversion of redeemable partnership units, value | 401 | 2,087 | 5,429 | 6,285 |  |  |  |
Adjustment to reflect redeemable partnership units at redemption value | 722,283 | (222,032) | 466,439 | (350,470) |  |  |  |
Preferred Units [Member] |  |  |  |  |  |  |  |
Beginning Balance |  |  |  |  |  |  |  | 193,623
Allocated net income for the period |  |  |  | 2,560 |  |  |  |
Distributions |  |  |  | (2,560) |  |  |  |
Preferred Units [Member] | Boston Properties Limited Partnership |  |  |  |  |  |  |  |
Beginning Balance |  | 0 |  | 0 |  |  |  |
Preferred Stock, Redemption Amount |  | (193,623) |  | (193,623) |  |  |  |
Accumulated Other Comprehensive Loss [Member] |  |  |  |  |  |  |  |
Beginning Balance | (27,077) | (43,166) | (27,077) | (43,166) | (28,485) | (36,662) | (45,139) | (49,890)
Effective portion of interest rate contracts | 31 | 593 | 6,831 | 3,962 |  |  |  |
Amortization of interest rate contracts | 1,377 | 1,380 | 2,754 | 2,762 |  |  |  |
Noncontrolling interest - property partnerships [Member] |  |  |  |  |  |  |  |
Beginning Balance | 1,552,706 | 1,725,343 | 1,552,706 | 1,725,343 | 1,548,455 | 1,556,553 | 1,725,600 | 1,726,933
Allocated net income for the period | 18,546 | 17,164 | 36,095 | 33,631 |  |  |  |
Amortization of interest rate contracts | 144 | 144 | 288 | 288 |  |  |  |
Contributions from noncontrolling interests in property partnerships |  | 2,139 | 849 | 2,420 |  |  |  |
Distributions to noncontrolling interests in property partnerships | (14,439) | (19,704) | (41,079) | (37,929) |  |  |  |
Total Capital [Member] |  |  |  |  |  |  |  |
Beginning Balance | 6,242,059 | 5,815,057 | 6,242,059 | 5,815,057 | 5,434,802 | 5,693,181 | 6,073,085 | 6,425,305
Contributions, value | 4,418 | (294) | 4,885 | 20,195 |  |  |  |
Allocated net income for the period | 246,634 | 130,672 | 409,651 | 250,800 |  |  |  |
Distributions | (153,592) | (153,013) | (307,169) | (308,526) |  |  |  |
Preferred Stock, Redemption Amount |  | (193,623) |  | (193,623) |  |  |  |
Preferred Stock Redemption Charge |  |  |  | (6,412) |  |  |  |
Conversion of redeemable partnership units, value | 401 | 2,087 | 5,429 | 6,285 |  |  |  |
Adjustment to reflect redeemable partnership units at redemption value | 722,283 | (222,032) | 466,439 | (350,470) |  |  |  |
Effective portion of interest rate contracts | 31 | 593 | 6,831 | 3,962 |  |  |  |
Amortization of interest rate contracts | 1,521 | 1,524 | 3,042 | 3,050 |  |  |  |
Contributions from noncontrolling interests in property partnerships |  | 2,139 | 849 | 2,420 |  |  |  |
Distributions to noncontrolling interests in property partnerships | (14,439) | (19,704) | (41,079) | (37,929) |  |  |  |
Noncontrolling interest - Redeemable partnership units [Member] |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount | 1,646,678 | 2,008,478 | 1,646,678 | 2,008,478 | $ 2,347,834 | $ 2,078,603 | $ 1,780,044 | $ 1,643,024
Contributions, value | 13,607 | 13,191 | 32,661 | 31,653 |  |  |  |
Allocated net income for the period | 25,700 | 12,338 | 42,061 | 23,422 |  |  |  |
Distributions | (17,939) | (17,253) | (35,859) | (34,540) |  |  |  |
Conversion of redeemable partnership units, value | (401) | (2,087) | (5,429) | (6,285) |  |  |  |
Adjustment to reflect redeemable partnership units at redemption value | (722,283) | 222,032 | (466,439) | 350,470 |  |  |  |
Effective portion of interest rate contracts | 4 | 61 | 769 | 432 |  |  |  |
Amortization of interest rate contracts | $ 156 | $ 152 | $ 311 | $ 302 |  |  |  |

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