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Real Estate (Tables) | 12 Months Ended
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Dec. 31, 2015
Real Estate Properties [Line Items] |
Schedule of Property Subject to or Available for Operating Lease [Table Text Block] | Boston Properties, Inc. Real estate consisted of the following at December 31 (in thousands):
|  | 2015 |  | 2014
Land |  | $ | 4,806,021 |  |  | $ | 4,785,772 |
Land held for future development |  | 252,195 |  |  | 268,114 |
Buildings and improvements |  | 11,709,285 |  |  | 11,666,105 |
Tenant improvements |  | 1,920,247 |  |  | 1,752,115 |
Furniture, fixtures and equipment |  | 29,852 |  |  | 27,986 |
Construction in progress |  | 763,935 |  |  | 736,311 |
Total |  | 19,481,535 |  |  | 19,236,403 |
Less: Accumulated depreciation |  | (3,925,894 | ) |  | (3,547,659 | )
|  | $ | 15,555,641 |  |  | $ | 15,688,744 |
Boston Properties Limited Partnership Real estate consisted of the following at December 31 (in thousands):
|  | 2015 |  | 2014
Land |  | $ | 4,700,793 |  |  | $ | 4,680,181 |
Land held for future development |  | 252,195 |  |  | 268,114 |
Buildings and improvements |  | 11,394,119 |  |  | 11,349,851 |
Tenant improvements |  | 1,920,247 |  |  | 1,752,115 |
Furniture, fixtures and equipment |  | 29,852 |  |  | 27,986 |
Construction in progress |  | 763,935 |  |  | 736,311 |
Total |  | 19,061,141 |  |  | 18,814,558 |
Less: Accumulated depreciation |  | (3,846,816 | ) |  | (3,476,321 | )
|  | $ | 15,214,325 |  |  | $ | 15,338,237 |
Summary Of The Discontinued Operations | The following table summarizes the income from discontinued operations related to One Preserve Parkway, 10 & 20 Burlington Mall Road, 1301 New York Avenue, 303 Almaden Boulevard and Montvale Center and the related gains on sales of real estate, gain on forgiveness of debt and impairment loss for the year ended December 31, 2013: Boston Properties, Inc.
| For the year ended December 31, 2013
| (in thousands)
Total revenue | $ | 20,138 |
Expenses |
Operating | 6,996 |
Depreciation and amortization | 4,760 |
Total expenses | 11,756 |
Operating income | 8,382 |
Other expense |
Interest expense | 360 |
Income from discontinued operations | $ | 8,022 |
Noncontrolling interest in income from discontinued operations – common units of the Operating Partnership | (803 | )
Income from discontinued operations attributable to Boston Properties, Inc. | $ | 7,219 |
Gains on sales of real estate from discontinued operations | $ | 112,829 |
Gain on forgiveness of debt from discontinued operations | 20,182 |
Impairment loss from discontinued operations | (3,241 | )
Noncontrolling interest in gains on sales of real estate, gain on forgiveness of debt and impairment loss from discontinued operations – common units of the Operating Partnership | (13,348 | )
Gains on sales of real estate, gain on forgiveness of debt and impairment loss from discontinued operations attributable to Boston Properties, Inc. | $ | 116,422 |
Boston Properties Limited Partnership
| For the year ended December 31, 2013
| (in thousands)
Total revenue | $ | 20,138 |
Expenses |
Operating | 6,996 |
Depreciation and amortization | 4,760 |
Total expenses | 11,756 |
Operating income | 8,382 |
Other expense |
Interest expense | 360 |
Income from discontinued operations attributable to Boston Properties Limited Partnership | $ | 8,022 |
Gains on sales of real estate from discontinued operations attributable to Boston Properties Limited Partnership | $ | 115,459 |
Gain on forgiveness of debt from discontinued operations attributable to Boston Properties Limited Partnership | $ | 20,736 |
Impairment loss from discontinued operations attributable to Boston Properties Limited Partnership | $ | (2,852 | )
Pro Forma In Connection With Acquisition | This unaudited pro forma information is based upon the historical consolidated financial statements of the Company and should be read in conjunction with the consolidated financial statements and notes thereto. This pro forma information does not purport to represent what the actual results of operations of the Company would have been had the above occurred, nor do they purport to predict the results of operations of future periods. Additional information for these transactions are provided below. Boston Properties, Inc.
Pro Forma (Unaudited) | Year ended December 31, 2013
(in thousands, except per share data) |
Total revenue | $ | 2,257,098 |
Income from continuing operations | $ | 302,354 |
Net income attributable to Boston Properties, Inc. | $ | 400,017 |
Basic earnings per share: |
Net income per share attributable to Boston Properties, Inc. | $ | 2.58 |
Diluted earnings per share: |
Net income per share attributable to Boston Properties, Inc. | $ | 2.57 |
Boston Properties Limited Partnership
Pro Forma (Unaudited) | Year ended December 31, 2013
(in thousands, except per unit data) |
Total revenue | $ | 2,257,098 |
Income from continuing operations | $ | 314,307 |
Net income attributable to Boston Properties Limited Partnership | $ | 452,813 |
Basic earnings per unit: |
Net income per unit attributable to Boston Properties Limited Partnership | $ | 2.68 |
Diluted earnings per unit: |
Net income per unit attributable to Boston Properties Limited Partnership | $ | 2.67 |
Mountain View Research And Technology Parks [Member] |
Real Estate Properties [Line Items] |
Schedule Of Allocation Of The Aggregate Purchase Price Of Acquisition | The following table summarizes the allocation of the aggregate purchase price of Mountain View Research Park and Mountain View Technology Park at the date of acquisition (in thousands) in accordance with the guidance in ASC 805 “Business Combinations.”
Land | $ | 126,521 |
Building and improvements | 82,451 |
Tenant improvements | 7,326 |
In-place lease intangibles | 23,279 |
Above-market rents | 843 |
Below-market rents | (7,336 | )
Net assets acquired | $ | 233,084 |
767 Fifth Avenue (the General Motors Building) |
Real Estate Properties [Line Items] |
Schedule Of Allocation Of The Aggregate Purchase Price Of Acquisition | The following table summarizes the allocation of the aggregate purchase price of 767 Fifth Avenue (the General Motors Building) at the date of consolidation on May 31, 2013 (in thousands) in accordance with the guidance in ASC 805 “Business Combinations.”
Real estate and related intangibles recorded upon consolidation |  |
Land | $ | 1,796,252 |  |
Building and improvements | 1,447,446 |  |
Tenant improvements | 85,208 |  |
In-place lease intangibles | 357,781 |  |
Above market rents | 101,897 |  |
Below market rents | (239,641 | ) |
Above market assumed debt adjustments | (192,943 | ) |
| $ | 3,356,000 |  |
Debt recorded upon consolidation |  |
Mortgage notes payable | $ | (1,300,000 | ) |
Mezzanine notes payable | (306,000 | ) |
Members’ notes payable | (450,000 | ) | (1)
| $ | (2,056,000 | ) |
Working capital recorded upon consolidation |  |
Cash and cash equivalents | $ | 79,468 |  |
Cash held in escrows | 2,403 |  |
Tenant and other receivables | 7,104 |  |
Prepaid expenses and other assets | 4,269 |  |
Accounts payable and accrued expenses | (2,418 | ) |
Accrued interest payable | (182,369 | ) | (2)
Other liabilities | (6,304 | ) |
| $ | (97,847 | ) |
Noncontrolling interest recorded upon consolidation |  |
Noncontrolling interests | $ | (520,000 | ) |
Noncontrolling interests - working capital | 39,139 |  |
| $ | (480,861 | ) |
Net assets recorded upon consolidation | $ | 721,292 |  |
_______________
(1) | The Company’s member loan totaling $270.0 million eliminates in consolidation.
(2) | The Company’s share of the accrued interest payable on the members’ loans totaling approximately $105.5 million eliminates in consolidation.

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