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v3.19.2

Leases Narrative (Details) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jan. 01, 2019 USD ($) | Dec. 31, 2018 USD ($)
Finance leases under development | 3 | 3 |  |  |
Cumulative effect of a change in accounting principle |  | $ 4,379,000 | $ (5,496,000) |  |
Right of use assets - operating leases | $ 149,839,000 | 149,839,000 |  | $ 151,800,000 | $ 0
Lease liabilities - operating leases | $ 199,344,000 | 199,344,000 |  | $ 199,300,000 | 0
Lessee, Finance Lease, Description | four |  |  |  |
Boston Properties Limited Partnership |  |  |  |  |
Right of use assets - operating leases | $ 149,839,000 | 149,839,000 |  |  | 0
Lease liabilities - operating leases | 199,344,000 | 199,344,000 |  |  | $ 0
Dividends In Excess Of Earnings [Member] |  |  |  |  |
Cumulative effect of a change in accounting principle |  | 3,864,000 | (4,933,000) |  |
Dividends In Excess Of Earnings [Member] | Boston Properties Limited Partnership |  |  |  |  |
Cumulative effect of a change in accounting principle |  | 3,900,000 |  |  |
Noncontrolling Interests - Common units [Member] |  |  |  |  |
Cumulative effect of a change in accounting principle |  | 445,000 | $ (563,000) |  |
Noncontrolling Interests - Common units [Member] | Boston Properties Limited Partnership |  |  |  |  |
Cumulative effect of a change in accounting principle |  | 400,000 |  |  |
Noncontrolling interest - property partnerships [Member] |  |  |  |  |
Cumulative effect of a change in accounting principle | $ 0 | 70,000 |  |  |
Noncontrolling interest - property partnerships [Member] | Boston Properties Limited Partnership |  |  |  |  |
Cumulative effect of a change in accounting principle |  | $ 70,000 |  |  |

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- Definition Amount of the cumulative effect on retained earnings net of related income tax effect. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794 + Details
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- Definition Description of lessee's finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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