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Stockholders' Equity / Partners' Capital Dividends / distributions (Details) - $ / shares | Nov. 16, 2015 | Oct. 30, 2015 | Aug. 17, 2015 | Jul. 31, 2015 | May. 15, 2015 | Apr. 30, 2015 | Feb. 17, 2015 | Jan. 28, 2015 | Feb. 16, 2016 | Jan. 28, 2016
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Dividends / Distributions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Special dividend / distribution (per share / common unit amount) |  |  |  |  |  |  |  |  | $ 4.50 |  |  | $ 1.25
Common Stock / Unit, Dividends / Distributions, Per Share / Unit, Cash Paid |  |  | $ 0.65 |  | $ 0.65 |  | $ 0.65 |  | 5.15 | [1] |  |
Dividends Payable, Amount Per Share / Unit | [2] |  |  |  |  |  |  |  |  |  |  | 1.90
Boston Properties Limited Partnership [Member] |  |  |  |  |  |  |  |  |  |  |  |
Dividends / Distributions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Special dividend / distribution (per share / common unit amount) |  |  |  |  |  |  |  |  | 4.50 |  |  | 1.25
Common Stock / Unit, Dividends / Distributions, Per Share / Unit, Cash Paid |  |  | $ 0.65 |  | $ 0.65 |  | $ 0.65 |  | $ 5.15 | [1] |  |
Dividends Payable, Amount Per Share / Unit | [2] |  |  |  |  |  |  |  |  |  |  | $ 1.90
Series B Cumulative Redeemable Preferred Stock / Unit [Member] |  |  |  |  |  |  |  |  |  |  |  |
Dividends / Distributions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common Stock / Unit, Dividends / Distributions, Per Share / Unit, Cash Paid |  | $ 32.8125 |  | $ 32.8125 |  | $ 32.8125 |  | $ 32.8125 |  |  |  |
Dividends Payable, Amount Per Share / Unit |  |  |  |  |  |  |  |  |  |  | $ 32.8125 |
[1] | Includes a special dividend/distribution of $4.50 per share/common unit.
[2] | Includes a special dividend/distribution of $1.25 per share/common unit.

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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