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Consolidated Statements Of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Net income | $ 631,932 | $ 1,018,691 | $ 651,999
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 717,336 | 683,751 | 677,764
Amortization of right of use assets - operating leases | 3,516 | 2,234 | 2,412
Impairment of Real Estate | 0 | 0 | 24,038
Non-cash compensation expense | 50,860 | 44,142 | 40,958
Loss (income) from unconsolidated joint ventures | 2,570 | 85,110 | (46,592)
Distributions of net cash flow from operations of unconsolidated joint ventures | 21,542 | 31,892 | 17,155
Gains from investments in securities | (5,626) | (5,261) | (6,417)
Allowance for current expected credit losses | (1,207) | 1,849 | 0
Non-cash portion of interest expense | 23,368 | 23,384 | 22,254
Settlement of accreted debt discount on redemption of unsecured senior notes | (8,500) | 0 | (763)
Loss from early extinguishment of debt | 45,182 | 0 | 29,540
Gains on sales of real estate | (123,660) | (618,982) | (709)
Change in assets and liabilities: |  |  |
Tenant and other receivables, net | 4,820 | 22,550 | (24,876)
Notes receivable, net | (545) | (19) | 4
Accrued rental income, net | (101,548) | (97,099) | (56,817)
Prepaid expenses and other assets | (20,811) | 12,488 | 2,965
Lease liabilities - finance leases | 0 | (568) | 0
Lease liabilities - operating leases | (23,599) | 1,533 | 1,616
Accounts payable and accrued expenses | 20,025 | (4,059) | 12,627
Accrued interest payable | (10,839) | 16,211 | 858
Other liabilities | (28,739) | 17,629 | (49,569)
Tenant leasing costs | (62,850) | (79,772) | (117,282)
Total adjustments | 501,295 | 138,149 | 529,166
Net cash provided by operating activities | 1,133,227 | 1,156,840 | 1,181,165
Cash flows from investing activities: |  |  |
Acquisitions of real estate | (222,260) | (137,976) | (149,031)
Construction in progress | (513,878) | (482,507) | (546,060)
Building and other capital improvements | (150,998) | (160,126) | (180,556)
Tenant improvements | (263,952) | (234,423) | (251,831)
Right of use assets - finance leases | 0 | 0 | (5,152)
Proceeds from sales of real estate | 179,887 | 519,303 | 90,824
Capital contributions to unconsolidated joint ventures | (98,152) | (172,436) | (87,392)
Capital distributions from unconsolidated joint ventures | 122 | 55,298 | 136,807
Cash and cash equivalents deconsolidated | 0 | 0 | (24,112)
Issuance of notes receivable, net | 0 | (9,800) | 0
Proceeds from note receivable | 10,035 | 6,397 | (3,544)
Proceeds from sale of investment in unconsolidated joint venture | 17,789 | 0 | 0
Investments in securities, net | 1,451 | 2,551 | (2,132)
Net cash used in investing activities | (1,039,956) | (613,719) | (1,015,091)
Cash flows from financing activities: |  |  |
Proceeds from mortgage notes payable | 1,201,388 | 0 | 0
Repayments of mortgage notes payable | (832,296) | (17,168) | (46,173)
Proceeds from unsecured senior notes | 1,695,996 | 1,248,125 | 1,548,106
Redemption of unsecured senior notes | (1,841,500) | 0 | (699,237)
Borrowings on unsecured line of credit | 770,000 | 265,000 | 380,000
Repayments of unsecured line of credit | (625,000) | (265,000) | (380,000)
Repayment of unsecured term loan | (500,000) | 0 | 0
Redemption of preferred stock | (200,000) | 0 | 0
Payments on finance lease obligations | 1,250 | 0 | 502
Deferred financing costs | (20,757) | (10,416) | (13,213)
Debt issuance costs | (16,186) | 0 | 0
Debt prepayment and extinguishment costs | (43,036) | 0 | (28,716)
Net proceeds from equity transactions | 24,214 | 3,277 | 13,710
Dividends and distributions | (683,753) | (688,904) | (666,294)
Contributions from noncontrolling interests in property partnerships | 18,002 | 8,219 | 35,816
Distributions to noncontrolling interests in property partnerships | (259,764) | (58,811) | (69,913)
Acquisition of noncontrolling interest in property partnership | 0 | 0 | (186,963)
Net cash provided by (used in) financing activities | (1,311,442) | 484,322 | (113,379)
Net increase (decrease) in cash and cash equivalents and cash held in escrows | (1,218,171) | 1,027,443 | 52,695
Cash and cash equivalents and cash held in escrows, beginning of period | 1,719,329 | 691,886 | 639,191
Cash and cash equivalents and cash held in escrows, end of period | 501,158 | 1,719,329 | 691,886
Reconciliation of cash and cash equivalents and cash held in escrow |  |  |
Cash and cash equivalents, beginning of period | 1,668,742 | 644,950 | 543,359
Cash held in escrows, beginning of period | 50,587 | 46,936 | 95,832
Cash and cash equivalents, end of period | 452,692 | 1,668,742 | 644,950
Cash held in escrows,end of period | 48,466 | 50,587 | 46,936
Supplemental disclosures: |  |  |
Cash paid for interest | 465,442 | 433,492 | 439,059
Interest capitalized | 53,097 | 53,881 | 54,911
Non-cash investing and financing activities: |  |  |
Write-off of fully depreciated real estate | (239,317) | (99,494) | (129,831)
Change in real estate included in accounts payable and accrued expenses | (25,183) | (19,848) | 89,245
Right-of-use assets obtained in exchange for operating lease liabilities | 26,887 | 0 | 287,540
Prepaid rent reclassified to right of use asset | 0 | 0 | 15,000
Accrued rental income, net deconsolidated | 0 | (4,558) | 0
Tenant leasing costs, net deconsolidated | 0 | (3,462) | 0
Building and other capital improvements, net deconsolidated | 0 | (111,889) | (12,767)
Tenant improvements, net deconsolidated | 0 | (12,331) | 0
Construction in progress, net deconsolidated | (299,947) | 0 | 0
Prepaid expenses and other assets, net deconsolidated | (5,011) | 0 | 0
Right of use asset - finance lease deconsolidated | 0 | 0 | (135,004)
Lease liability - finance lease deconsolidated | 0 | 0 | 119,534
Investment in unconsolidated joint venture recorded upon deconsolidation | 107,132 | 347,898 | 29,246
Issuance of operating partnership units for 360 Park Avenue South | 99,689 | 0 | 0
Assumption of mortgage notes payable | 200,311 | 0 | 0
Mortgage notes payable - deconsolidated | (198,381) | 0 | 0
Dividends and distributions declared but not paid | 169,859 | 171,082 | 170,713
Conversions of noncontrolling interests to stockholders’ equity | 18,386 | 29,698 | 4,885
Issuance of restricted securities to employees and non-employee directors | 44,405 | 42,607 | 37,622
Boston Properties Limited Partnership |  |  |
Net income | 641,771 | 1,038,739 | 661,722
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 709,035 | 676,666 | 669,956
Amortization of right of use assets - operating leases | 3,516 | 2,234 | 2,412
Impairment of Real Estate | 0 | 0 | 22,272
Non-cash compensation expense | 50,860 | 44,142 | 40,958
Loss (income) from unconsolidated joint ventures | 2,570 | 85,110 | (46,592)
Distributions of net cash flow from operations of unconsolidated joint ventures | 21,542 | 31,892 | 17,155
Gains from investments in securities | (5,626) | (5,261) | (6,417)
Allowance for current expected credit losses | (1,207) | 1,849 | 0
Non-cash portion of interest expense | 23,368 | 23,384 | 22,254
Settlement of accreted debt discount on redemption of unsecured senior notes | (8,500) | 0 | (763)
Loss from early extinguishment of debt | 45,182 | 0 | 29,540
Gains on sales of real estate | (125,198) | (631,945) | (858)
Change in assets and liabilities: |  |  |
Tenant and other receivables, net | 4,820 | 22,550 | (24,876)
Notes receivable, net | (545) | (19) | 4
Accrued rental income, net | (101,548) | (97,099) | (56,817)
Prepaid expenses and other assets | (20,811) | 12,488 | 2,965
Lease liabilities - finance leases | 0 | (568) | 0
Lease liabilities - operating leases | (23,599) | 1,533 | 1,616
Accounts payable and accrued expenses | 20,025 | (4,059) | 12,627
Accrued interest payable | (10,839) | 16,211 | 858
Other liabilities | (28,739) | 17,629 | (49,569)
Tenant leasing costs | (62,850) | (79,772) | (117,282)
Total adjustments | 491,456 | 118,101 | 519,443
Net cash provided by operating activities | 1,133,227 | 1,156,840 | 1,181,165
Cash flows from investing activities: |  |  |
Acquisitions of real estate | (222,260) | (137,976) | (149,031)
Construction in progress | (513,878) | (482,507) | (546,060)
Building and other capital improvements | (150,998) | (160,126) | (180,556)
Tenant improvements | (263,952) | (234,423) | (251,831)
Right of use assets - finance leases | 0 | 0 | (5,152)
Proceeds from sales of real estate | 179,887 | 519,303 | 90,824
Capital contributions to unconsolidated joint ventures | (98,152) | (172,436) | (87,392)
Capital distributions from unconsolidated joint ventures | 122 | 55,298 | 136,807
Cash and cash equivalents deconsolidated | 0 | 0 | (24,112)
Issuance of notes receivable, net | 0 | (9,800) | 0
Proceeds from note receivable | 10,035 | 6,397 | 3,544
Proceeds from sale of investment in unconsolidated joint venture | 17,789 | 0 | 0
Investments in securities, net | 1,451 | 2,551 | (2,132)
Net cash used in investing activities | (1,039,956) | (613,719) | (1,015,091)
Cash flows from financing activities: |  |  |
Proceeds from mortgage notes payable | 1,201,388 | 0 | 0
Repayments of mortgage notes payable | (832,296) | (17,168) | (46,173)
Proceeds from unsecured senior notes | 1,695,996 | 1,248,125 | 1,548,106
Redemption of unsecured senior notes | (1,841,500) | 0 | (699,237)
Borrowings on unsecured line of credit | 770,000 | 265,000 | 380,000
Repayments of unsecured line of credit | (625,000) | (265,000) | (380,000)
Repayment of unsecured term loan | (500,000) | 0 | 0
Redemption of preferred stock | (200,000) | 0 | 0
Payments on finance lease obligations | 1,250 | 0 | (502)
Deferred financing costs | (20,757) | (10,416) | (13,213)
Debt issuance costs | (16,186) | 0 | 0
Debt prepayment and extinguishment costs | (43,036) | 0 | (28,716)
Net proceeds from equity transactions | 24,214 | 3,277 | 13,710
Dividends and distributions | (683,753) | (688,904) | (666,294)
Contributions from noncontrolling interests in property partnerships | 18,002 | 8,219 | 35,816
Distributions to noncontrolling interests in property partnerships | (259,764) | (58,811) | (69,913)
Acquisition of noncontrolling interest in property partnership | 0 | 0 | (186,963)
Net cash provided by (used in) financing activities | (1,311,442) | 484,322 | (113,379)
Net increase (decrease) in cash and cash equivalents and cash held in escrows | (1,218,171) | 1,027,443 | 52,695
Cash and cash equivalents and cash held in escrows, beginning of period | 1,719,329 | 691,886 | 639,191
Cash and cash equivalents and cash held in escrows, end of period | 501,158 | 1,719,329 | 691,886
Reconciliation of cash and cash equivalents and cash held in escrow |  |  |
Cash and cash equivalents, beginning of period | 1,668,742 | 644,950 | 543,359
Cash held in escrows, beginning of period | 50,587 | 46,936 | 95,832
Cash and cash equivalents, end of period | 452,692 | 1,668,742 | 644,950
Cash held in escrows,end of period | 48,466 | 50,587 | 46,936
Supplemental disclosures: |  |  |
Cash paid for interest | 465,442 | 433,492 | 439,059
Interest capitalized | 53,097 | 53,881 | 54,911
Non-cash investing and financing activities: |  |  |
Write-off of fully depreciated real estate | (238,003) | (99,494) | (129,253)
Change in real estate included in accounts payable and accrued expenses | (25,183) | (19,848) | 89,245
Right-of-use assets obtained in exchange for operating lease liabilities | 26,887 | 0 | 287,540
Prepaid rent reclassified to right of use asset | 0 | 0 | 15,000
Accrued rental income, net deconsolidated | 0 | (4,558) | 0
Tenant leasing costs, net deconsolidated | 0 | (3,462) | 0
Building and other capital improvements, net deconsolidated | 0 | (111,889) | (12,767)
Tenant improvements, net deconsolidated | 0 | (12,331) | 0
Construction in progress, net deconsolidated | (299,947) | 0 | 0
Prepaid expenses and other assets, net deconsolidated | (5,011) | 0 | 0
Right of use asset - finance lease deconsolidated | 0 | 0 | (135,004)
Lease liability - finance lease deconsolidated | 0 | 0 | 119,534
Investment in unconsolidated joint venture recorded upon deconsolidation | 107,132 | 347,898 | 29,246
Issuance of operating partnership units for 360 Park Avenue South | 99,689 | 0 | 0
Assumption of mortgage notes payable | 200,311 | 0 | 0
Mortgage notes payable - deconsolidated | (198,381) | 0 | 0
Dividends and distributions declared but not paid | 169,859 | 171,082 | 170,713
Conversions of noncontrolling interests to stockholders’ equity | 18,386 | 29,698 | 4,885
Issuance of restricted securities to employees and non-employee directors | $ 44,405 | $ 42,607 | $ 37,622

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- Definition Amount of interest paid on finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918643-209977 + Details
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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2443-110228 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 + Details
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- Definition The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period in outstanding loans including accrued interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition Amount of increase (decrease) in prepaid expenses, and assets classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition Amount of interest capitalized during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585 + Details
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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585 + Details
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- Definition The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4313-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586 + Details
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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