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Stockholders' Equity / Partners' Capital Stockholders Equity / Partners Capital (Tables) | 12 Months Ended
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Dec. 31, 2015
Class of Stock [Line Items] |
Dividends Declared [Table Text Block] | The following table presents Boston Properties, Inc.’s dividends per share and Boston Properties Limited Partnership’s distributions per unit for the periods presented:
Record Date |  | Payment Date |  | Dividend (Per Share) |  |  | Distribution (Per Unit) |  |
December 31, 2015 |  | January 28, 2016 |  |  | $1.90 |  | (1) |  | $1.90 |  | (1)
September 30, 2015 |  | October 30, 2015 |  | 0.65 |  |  | 0.65 |  |
June 30, 2015 |  | July 31, 2015 |  | 0.65 |  |  | 0.65 |  |
March 31, 2015 |  | April 30, 2015 |  | 0.65 |  |  | 0.65 |  |
December 31, 2014 |  | January 28, 2015 |  | 5.15 |  | (2) | 5.15 |  | (2)
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(1) | Includes a special dividend/distribution of $1.25 per share/common unit.
(2) | Includes a special dividend/distribution of $4.50 per share/common unit.
Schedule Of Changes In Partners Capital Unit [Table Text Block] [Table Text Block] | The following table presents the changes in the issued and outstanding partners’ capital units since January 1, 2013:
|  | General Partner Units |  | Limited Partner Units |  | Total Partners’ Capital Units
Outstanding at December 31, 2012 |  | 1,689,580 |  |  | 149,911,629 |  |  | 151,601,209 |
Units issued to Boston Properties, Inc. related to Common Stock issued under the Employee Stock Purchase Plan |  | 50 |  |  | 6,392 |  |  | 6,442 |
Units issued to Boston Properties, Inc. related to Common Stock issued under the Stock Option and Incentive Plan, net |  | 207 |  |  | 26,686 |  |  | 26,893 |
Units issued to Boston Properties, Inc. related to Common Stock issued in exchange for OP Units |  | 7,158 |  |  | 922,283 |  |  | 929,441 |
Units issued to Boston Properties, Inc. related to Common Stock issued under the “at the market” (ATM) stock offering programs |  | 3,227 |  |  | 415,889 |  |  | 419,116 |
Outstanding at December 31, 2013 |  | 1,700,222 |  |  | 151,282,879 |  |  | 152,983,101 |
Units issued to Boston Properties, Inc. related to Common Stock issued under the Employee Stock Purchase Plan |  | 555 |  |  | 6,409 |  |  | 6,964 |
Units issued to Boston Properties, Inc. related to Common Stock issued under the Stock Option and Incentive Plan, net |  | 3,476 |  |  | 40,158 |  |  | 43,634 |
Units issued to Boston Properties, Inc. related to Common Stock issued in exchange for OP Units |  | 6,391 |  |  | 73,855 |  |  | 80,246 |
Outstanding at December 31, 2014 |  | 1,710,644 |  |  | 151,403,301 |  |  | 153,113,945 |
Units issued to Boston Properties, Inc. related to Common Stock issued under the Employee Stock Purchase Plan |  | 59 |  |  | 6,140 |  |  | 6,199 |
Units issued to Boston Properties, Inc. related to Common Stock issued under the Stock Option and Incentive Plan, net |  | 340 |  |  | 35,246 |  |  | 35,586 |
Units issued to Boston Properties, Inc. related to Common Stock issued in exchange for OP Units |  | 4,049 |  |  | 420,187 |  |  | 424,236 |
Outstanding at December 31, 2015 |  | 1,715,092 |  |  | 151,864,874 |  |  | 153,579,966 |
Schedule of changes in Series B Preferred Units [Table Text Block] [Table Text Block] | The following table reflects the activity of the Series B Preferred Units for the years ended December 31, 2015, 2014 and 2013 (in thousands), which activity is included within Boston Properties Limited Partnership’s Consolidated Statements of Partners’ Capital:
Balance at December 31, 2012 | $ | — |
Issuance of Series B Preferred Units | 193,623 |
Net income | 8,057 |
Distributions | (8,057 | )
Balance at December 31, 2013 | 193,623 |
Net income | 10,500 |
Distributions | (10,500 | )
Balance at December 31, 2014 | 193,623 |
Net income | 10,500 |
Distributions | (10,500 | )
Balance at December 31, 2015 | $ | 193,623 |
Series B Preferred Stock [Member] |
Class of Stock [Line Items] |
Dividends Declared [Table Text Block] | The following table presents Boston Properties Inc.’s dividends per share on its outstanding Series B Preferred Stock:
Record Date |  | Payment Date |  | Dividend (Per Share) |
February 5, 2016 |  | February 16, 2016 |  |  | $32.8125 |
November 5, 2015 |  | November 16, 2015 |  | 32.8125 |
August 5, 2015 |  | August 17, 2015 |  | 32.8125 |
May 5, 2015 |  | May 15, 2015 |  | 32.8125 |
February 5, 2015 |  | February 17, 2015 |  | 32.8125 |

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