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Selected Interim Financial Information (unaudited) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Information [Text Block] | 19. Selected Interim Financial Information (unaudited) Boston Properties, Inc. The tables below reflect Boston Properties, Inc.’s selected quarterly information for the years ended December 31, 2017 and 2016.
|  | 2017 Quarter Ended
|  | March 31, |  | June 30, |  | September 30, |  | December 31,
|  | (in thousands, except for per share amounts)
Total revenue |  | $ | 632,228 |  |  | $ | 656,907 |  |  | $ | 657,712 |  |  | $ | 655,229 |
Income before gains on sales of real estate |  | $ | 115,431 |  |  | $ | 163,243 |  |  | $ | 144,813 |  |  | $ | 131,331 |
Net income attributable to Boston Properties, Inc. common shareholders |  | $ | 97,083 |  |  | $ | 133,709 |  |  | $ | 117,337 |  |  | $ | 103,829 |
Income attributable to Boston Properties, Inc. per share—basic |  | $ | 0.63 |  |  | $ | 0.87 |  |  | $ | 0.76 |  |  | $ | 0.67 |
Income attributable to Boston Properties, Inc. per share—diluted |  | $ | 0.63 |  |  | $ | 0.87 |  |  | $ | 0.76 |  |  | $ | 0.67 |
|  | 2016 Quarter Ended
|  | March 31, |  | June 30, |  | September 30, |  | December 31,
|  | (in thousands, except for per share amounts)
Total revenue |  | $ | 665,985 |  |  | $ | 623,546 |  |  | $ | 625,228 |  |  | $ | 636,061 |
Income before gains on sales of real estate |  | $ | 148,599 |  |  | $ | 117,357 |  |  | $ | 58,521 |  |  | $ | 164,894 |
Net income attributable to Boston Properties, Inc. common shareholders |  | $ | 181,747 |  |  | $ | 96,597 |  |  | $ | 76,753 |  |  | $ | 147,214 |
Income attributable to Boston Properties, Inc. per share—basic |  | $ | 1.18 |  |  | $ | 0.63 |  |  | $ | 0.50 |  |  | $ | 0.96 |
Income attributable to Boston Properties, Inc. per share—diluted |  | $ | 1.18 |  |  | $ | 0.63 |  |  | $ | 0.50 |  |  | $ | 0.96 |
Boston Properties Limited Partnership The tables below reflect Boston Properties Limited Partnership’s selected quarterly information for the years ended December 31, 2017 and 2016.
|  | 2017 Quarter Ended
|  | March 31, |  | June 30, |  | September 30, |  | December 31,
|  | (in thousands, except for per unit amounts)
Total revenue |  | $ | 632,228 |  |  | $ | 656,907 |  |  | $ | 657,712 |  |  | $ | 655,229 |
Income before gains on sales of real estate |  | $ | 117,578 |  |  | $ | 165,328 |  |  | $ | 146,767 |  |  | $ | 133,285 |
Net income attributable to Boston Properties Limited Partnership common unitholders |  | $ | 110,662 |  |  | $ | 151,844 |  |  | $ | 132,693 |  |  | $ | 117,667 |
Income attributable to Boston Properties Limited Partnership per unit—basic |  | $ | 0.64 |  |  | $ | 0.88 |  |  | $ | 0.77 |  |  | $ | 0.69 |
Income attributable to Boston Properties Limited Partnership per unit—diluted |  | $ | 0.64 |  |  | $ | 0.88 |  |  | $ | 0.77 |  |  | $ | 0.68 |
|  | 2016 Quarter Ended
|  | March 31, |  | June 30, |  | September 30, |  | December 31,
|  | (in thousands, except for per unit amounts)
Total revenue |  | $ | 665,985 |  |  | $ | 623,546 |  |  | $ | 625,228 |  |  | $ | 636,061 |
Income before gains on sales of real estate |  | $ | 150,586 |  |  | $ | 119,341 |  |  | $ | 63,687 |  |  | $ | 167,384 |
Net income attributable to Boston Properties Limited Partnership common unitholders |  | $ | 207,296 |  |  | $ | 109,938 |  |  | $ | 91,306 |  |  | $ | 166,801 |
Income attributable to Boston Properties Limited Partnership per unit—basic |  | $ | 1.21 |  |  | $ | 0.64 |  |  | $ | 0.53 |  |  | $ | 0.97 |
Income attributable to Boston Properties Limited Partnership per unit—diluted |  | $ | 1.21 |  |  | $ | 0.64 |  |  | $ | 0.53 |  |  | $ | 0.97 |

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1570-108306 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305 + Details
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