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Noncontrolling Interests (Tables) | 12 Months Ended
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Dec. 31, 2016
Entity Information [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 OP Unit and LTIP Unit paid or payable in 2016:
Record Date |  | Payment Date |  | Dividend (Per Share) |  |  | Distribution (Per Unit) |  |
December 30, 2016 |  | January 30, 2017 |  |  | $0.75 |  |  |  | $0.75 |  |
September 30, 2016 |  | October 31, 2016 |  | 0.65 |  |  | 0.65 |  |
June 30, 2016 |  | July 29, 2016 |  | 0.65 |  |  | 0.65 |  |
March 31, 2016 |  | April 29, 2016 |  | 0.65 |  |  | 0.65 |  |
December 31, 2015 |  | January 28, 2016 |  | 1.90 |  | (1) | 1.90 |  | (1)
_______________
(1) | Includes a special dividend/distribution of $1.25 per share/OP Unit and LTIP Unit.
Schedule of Redeemable Interest in Property Partnerships [Table Text Block] | The following table reflects the activity of the noncontrolling interest—redeemable interest in property partnership in the Company’s Fountain Square consolidated entity for the years ended December 31, 2015 and 2013 (in thousands):
Balance at December 31, 2013 | $ | 99,609 |
Net loss | (603 | )
Distributions | (6,000 | )
Adjustment to reflect redeemable interest at redemption value | 11,686 |
Balance at December 31, 2014 | 104,692 |
Net loss | (7 | )
Distributions | (2,900 | )
Adjustment to reflect redeemable interest at redemption value | 5,128 |
Acquisition of interest | (106,913 | )
Balance at December 31, 2015 | $ | — |
Schedule Of Noncontrolling Interest Property Partnerships [Table Text Block] | The following table reflects the activity of the noncontrolling interests—property partnerships for the years ended December 31, 2016, 2015 and 2014 (in thousands):
Balance at December 31, 2013 | $ | 726,132 |
Capital contributions | 887,975 |
Net income | 19,478 |
Distributions | (31,118 | )
Balance at December 31, 2014 | 1,602,467 |
Capital contributions | 3,758 |
Dissolution | (4,082 | )
Net income | 144,734 |
Accumulated other comprehensive loss | (2,428 | )
Distributions | (170,049 | )
Balance at December 31, 2015 | 1,574,400 |
Capital contributions | 10,756 |
Net loss | (2,068 | )
Accumulated other comprehensive loss | (877 | )
Distributions | (51,564 | )
Balance at December 31, 2016 | $ | 1,530,647 |
Boston Properties, Inc. [Member] |
Entity Information [Line Items] |
Schedule Of Redeemable Preferred Units of the Operating Partnership | The following table reflects the activity of the noncontrolling interests—redeemable preferred units of Boston Properties, Inc. for the years ended December 31, 2015 and 2014 (in thousands):
Balance at December 31, 2013 | $ | 51,312 |
Net income | 1,023 |
Distributions | (1,023 | )
Redemption of redeemable preferred units (Series Four Preferred Units) | (17,373 | )
Conversion of redeemable preferred units (Series Two Preferred Units) to common units | (33,306 | )
Balance at December 31, 2014 | 633 |
Net income | 6 |
Distributions | (6 | )
Redemption of redeemable preferred units (Series Four Preferred Units) | (633 | )
Balance at December 31, 2015 | $ | — |
Boston Properties Limited Partnership |
Entity Information [Line Items] |
Schedule Of Redeemable Preferred Units of the Operating Partnership | The following table reflects the activity of the noncontrolling interests—redeemable preferred units of Boston Properties Limited Partnership for the years ended December 31, 2015 and 2014 (in thousands):
Balance at December 31, 2013 | $ | 105,746 |
Net income | 1,023 |
Distributions | (1,023 | )
Redemption of redeemable preferred units (Series Four Preferred Units) | (17,373 | )
Reallocation of partnership interest (1) | (87,740 | )
Balance at December 31, 2014 | 633 |
Net income | 6 |
Distributions | (6 | )
Redemption of redeemable preferred units (Series Four Preferred Units) | (633 | )
Balance at December 31, 2015 | $ | — |
_____________
(1) | Includes the conversion of 666,116 Series Two Preferred Units into 874,168 OP Units during the year ended December 31, 2014.
Schedule Of Noncontrolling Interest Common Units [Table Text Block] | The following table reflects the activity of noncontrolling interests—redeemable common units of Boston Properties Limited Partnership for the years ended December 31, 2016, 2015 and 2014 (in thousands):
Balance at December 31, 2013 | $ | 1,710,218 |
Contributions | 23,990 |
Net income | 50,862 |
Distributions | (126,948 | )
Conversion of redeemable partnership units | (2,700 | )
Unearned compensation | (2,813 | )
Other comprehensive income | 256 |
Adjustment to reflect redeemable partnership units at redemption value | 657,181 |
Balance at December 31, 2014 | 2,310,046 |
Contributions | 39,030 |
Net income | 66,951 |
Distributions | (69,447 | )
Conversion of redeemable partnership units | (14,343 | )
Unearned compensation | (4,579 | )
Other comprehensive loss | (554 | )
Adjustment to reflect redeemable partnership units at redemption value | (40,415 | )
Balance at December 31, 2015 | 2,286,689 |
Contributions | 31,395 |
Net income | 59,260 |
Distributions | (49,087 | )
Conversion of redeemable partnership units | (6,461 | )
Unearned compensation | (3,464 | )
Other comprehensive loss | (4,379 | )
Adjustment to reflect redeemable partnership units at redemption value | (51,913 | )
Balance at December 31, 2016 | $ | 2,262,040 |
Noncontrolling Interests [Member] |
Entity Information [Line Items] |
Dividends Declared [Table Text Block] | The following table presents Boston Properties Limited Partnership’s distributions on the OP Units and LTIP Units (including the 2012 OPP Units and, after the February 4, 2016 measurement date, the 2013 MYLTIP Units) and its distributions on the 2013 MYLTIP Units (prior to the February 4, 2016 measurement date), 2014 MYLTIP Units, 2015 MYLTIP Units and 2016 MYLTIP Units (after the February 10, 2016 issuance date) paid in 2016:
Record Date |  | Payment Date |  | Distributions per OP Unit and LTIP Unit |  | Distributions per MYLTIP Unit
December 30, 2016 |  | January 30, 2017 |  |  | $0.75 |  |  |  | $0.075 |
September 30, 2016 |  | October 31, 2016 |  |  | $0.65 |  |  |  | $0.065 |
June 30, 2016 |  | July 29, 2016 |  |  | $0.65 |  |  |  | $0.065 |
March 31, 2016 |  | April 29, 2016 |  |  | $0.65 |  |  |  | $0.065 |
December 31, 2015 |  | January 28, 2016 |  |  | $1.90 |  | (1) |  | $0.065 |
_______________
(1) | Includes a special distribution of $1.25 per unit.

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