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Consolidated Statements Of Cash Flows - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Cash flows from operating activities: |  |
Net income | $ 216,222 | $ 209,170
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 159,448 | 154,223
Non-cash compensation expense | 10,069 | 11,011
Income from unconsolidated joint ventures | (1,791) | (14,834)
Distributions of net cash flow from operations of unconsolidated joint ventures | 10,718 | 1,350
Gains from investments in securities | (259) | (393)
Non-cash portion of interest expense | (10,138) | (10,884)
Gains on sales of real estate | (67,623) | (95,084)
Change in assets and liabilities: |  |
Cash held in escrows | 1,940 | 1,044
Tenant and other receivables, net | 25,018 | (1,173)
Accrued rental income, net | (12,981) | (23,250)
Prepaid expenses and other assets | 45,560 | 3,447
Accounts payable and accrued expenses | (5,209) | (5,535)
Accrued interest payable | 31,192 | 23,098
Other liabilities | (33,319) | (23,136)
Tenant leasing costs | (19,867) | (27,608)
Total adjustments | 132,758 | (7,724)
Net cash provided by operating activities | 348,980 | 201,446
Cash flows from investing activities: |  |
Construction in progress | (122,940) | (60,013)
Building and other capital improvements | (25,329) | (19,391)
Tenant improvements | (55,739) | (26,950)
Proceeds from sales of real estate | 104,816 | 194,821
Proceeds from sales of real estate placed in escrow | (104,696) | (201,857)
Proceeds from sales of real estate released from escrow | 104,696 | 99,916
Cash released from scrow for land sale contracts | 488 | 0
Deposit on real estate | 0 | (5,000)
Capital contributions to unconsolidated joint ventures | (10,215) | (2,444)
Capital distributions from unconsolidated joint ventures | 0 | 24,527
Investments in securities, net | (438) | (884)
Net cash provided by (used in) investing activities | (109,357) | 2,725
Cash flows from financing activities: |  |
Repayments of mortgage notes payable | (6,265) | (7,024)
Proceeds from unsecured senior notes | 997,080 | 0
Proceeds from real estate financing transaction | 0 | 6,000
Payments on real estate financing transactions | (781) | (636)
Deferred financing costs | (8,047) | (20)
Net proceeds from equity transactions | (657) | (145)
Dividends and distributions | (328,567) | (883,684)
Contributions from noncontrolling interests in property partnerships | 2,489 | 629
Distributions to noncontrolling interests in property partnerships | (12,915) | (17,974)
Net cash provided by (used in) financing activities | 642,337 | (902,854)
Net increase (decrease) in cash and cash equivalents | 881,960 | (698,683)
Cash and cash equivalents, beginning of period | 723,718 | 1,763,079
Cash and cash equivalents, end of period | 1,605,678 | 1,064,396
Supplemental disclosures: |  |
Cash paid for interest | 93,524 | 104,508
Interest capitalized | 9,269 | 7,965
Non-cash investing and financing activities: |  |
Additions to real estate included in accounts payable and accrued expenses | (24,857) | 9,243
Dividends and distributions declared but not paid | 113,079 | 112,796
Conversions of noncontrolling interests to stockholders’ equity | 446 | 8,689
Issuance of restricted securities to employees | 32,630 | 42,279
Boston Properties Limited Partnership |  |
Cash flows from operating activities: |  |
Net income | 220,378 | 211,169
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 157,461 | 152,224
Non-cash compensation expense | 10,069 | 11,011
Income from unconsolidated joint ventures | (1,791) | (14,834)
Distributions of net cash flow from operations of unconsolidated joint ventures | 10,718 | 1,350
Gains from investments in securities | (259) | (393)
Non-cash portion of interest expense | (10,138) | (10,884)
Gains on sales of real estate | (69,792) | (95,084)
Change in assets and liabilities: |  |
Cash held in escrows | 1,940 | 1,044
Tenant and other receivables, net | 25,018 | (1,173)
Accrued rental income, net | (12,981) | (23,250)
Prepaid expenses and other assets | 45,560 | 3,447
Accounts payable and accrued expenses | (5,209) | (5,535)
Accrued interest payable | 31,192 | 23,098
Other liabilities | (33,319) | (23,136)
Tenant leasing costs | (19,867) | (27,608)
Total adjustments | 128,602 | (9,723)
Net cash provided by operating activities | 348,980 | 201,446
Cash flows from investing activities: |  |
Construction in progress | (122,940) | (60,013)
Building and other capital improvements | (25,329) | (19,391)
Tenant improvements | (55,739) | (26,950)
Proceeds from sales of real estate | 104,816 | 194,821
Proceeds from sales of real estate placed in escrow | (104,696) | (201,857)
Proceeds from sales of real estate released from escrow | 104,696 | 99,916
Cash released from scrow for land sale contracts | 488 | 0
Deposit on real estate | 0 | (5,000)
Capital contributions to unconsolidated joint ventures | (10,215) | (2,444)
Capital distributions from unconsolidated joint ventures | 0 | 24,527
Investments in securities, net | (438) | (884)
Net cash provided by (used in) investing activities | (109,357) | 2,725
Cash flows from financing activities: |  |
Repayments of mortgage notes payable | (6,265) | (7,024)
Proceeds from unsecured senior notes | 997,080 | 0
Proceeds from real estate financing transaction | 0 | 6,000
Payments on real estate financing transactions | (781) | (636)
Deferred financing costs | (8,047) | (20)
Net proceeds from equity transactions | (657) | (145)
Dividends and distributions | (328,567) | (883,684)
Contributions from noncontrolling interests in property partnerships | 2,489 | 629
Distributions to noncontrolling interests in property partnerships | (12,915) | (17,974)
Net cash provided by (used in) financing activities | 642,337 | (902,854)
Net increase (decrease) in cash and cash equivalents | 881,960 | (698,683)
Cash and cash equivalents, beginning of period | 723,718 | 1,763,079
Cash and cash equivalents, end of period | 1,605,678 | 1,064,396
Supplemental disclosures: |  |
Cash paid for interest | 93,524 | 104,508
Interest capitalized | 9,269 | 7,965
Non-cash investing and financing activities: |  |
Additions to real estate included in accounts payable and accrued expenses | (24,857) | 9,243
Dividends and distributions declared but not paid | 113,079 | 112,796
Conversions of noncontrolling interests to stockholders’ equity | (446) | (8,689)
Issuance of restricted securities to employees | $ 32,630 | $ 42,279

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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3574-108585 + Details
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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585 + Details
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- Definition Interest paid other than in cash for example by issuing additional debt securities. As a noncash item, it is added to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition The cash outflow for acquisition of or capital improvements to properties held for investment (operating, managed, leased) or for use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
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- Definition Net cash outflow or inflow from the amount given in advance to show intention to complete the acquisition piece of land, anything permanently fixed to it, including buildings, structures on it, and so forth. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 + Details
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- Definition Amount of cash outflow for the allowance granted to lessee and/or direct costs incurred by lessor used to prepare the leased premises for tenant's occupancy. + References No definition available. + Details
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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 + Details
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- Definition The cash outflow for loan and debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash outflow from the acquisition of a piece of land and anything permanently fixed to it, including buildings, structures on it and so forth, and payments to develop real estate assets by adding improvements on or to a parcel of land. Such improvements may include drainage, utilities, subdividing, access, buildings, and any combination of these elements. Including real estate intended to generate income for the owner; excluding real estate acquired for use by the owner. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
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- Definition Cash outflow for purchase of trading, available-for-sale securities and held-to-maturity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26853-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
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- Definition Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash inflow from the issuance of long-term debt that is not secured by collateral. Excludes proceeds from tax exempt unsecured debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 + Details
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- Definition The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 + Details
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- Definition Amount of cash inflow (outflow) from (to) a noncontrolling interest. Excludes dividends paid to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 + Details
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- Definition The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 + Details
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- Definition Cash received from the sale of real estate that is held for investment, that is, it is part of an investing activity during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=51664549&loc=SL4569616-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591552-111686 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
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- Definition The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition Difference between actual rental income due and rental income recognized on a straight-line basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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