Douglas Emmett (DEI) 10-Q 8 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 03, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	Douglas Emmett Inc
Entity Central Index Key	1,364,250
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		169,525,292

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Investment in real estate:
Land	$ 1,055,604	$ 1,022,340
Buildings and improvements	7,735,718	7,221,124
Tenant improvements and lease intangibles	737,606	696,197
Property under development	106,891	58,459
Investment in real estate, gross	9,635,819	8,998,120
Less: accumulated depreciation and amortization	(1,959,448)	(1,789,678)
Investment in real estate, net	7,676,371	7,208,442
Cash and cash equivalents	167,742	112,927
Tenant receivables, net	2,856	2,165
Deferred rent receivables, net	102,178	93,165
Acquired lease intangible assets, net	4,616	5,147
Interest rate contract assets	37,115	35,656
Investment in unconsolidated real estate funds	105,016	144,289
Other assets	17,278	11,914
Total Assets	8,113,172	7,613,705
Liabilities
Secured notes payable and revolving credit facility, net	4,048,828	4,369,537
Interest payable, accounts payable and deferred revenue	118,363	75,229
Security deposits	48,799	45,990
Acquired lease intangible liabilities, net	69,114	67,191
Interest rate contract liabilities	2,002	6,830
Dividends payable	38,989	34,857
Total liabilities	4,326,095	4,599,634
Douglas Emmett, Inc. stockholders' equity:
Common Stock, $0.01 par value, 750,000,000 authorized, 169,487,292 and 151,530,210 outstanding at September 30, 2017 and December 31, 2016, respectively	1,695	1,515
Additional paid-in capital	3,278,642	2,725,157
Accumulated other comprehensive income	22,539	15,156
Accumulated deficit	(866,954)	(820,685)
Total Douglas Emmett, Inc. stockholders' equity	2,435,922	1,921,143
Noncontrolling interests	1,351,155	1,092,928
Total equity	3,787,077	3,014,071
Total Liabilities and Equity	$ 8,113,172	$ 7,613,705

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Common Stock, par value (usd per share)	$ 0.01	$ 0.01
Common Stock, shares authorized (in shares)	750,000,000	750,000,000
Common Stock, shares outstanding (in shares)	169,487,292	151,530,210

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Office rental
Rental revenues	$ 140,993	$ 128,744	$ 409,674	$ 366,400
Tenant recoveries	15,854	12,914	39,705	34,111
Parking and other income	27,771	25,950	81,129	74,572
Total office revenues	184,618	167,608	530,508	475,083
Multifamily rental
Rental revenues	22,282	22,801	66,760	67,634
Parking and other income	1,849	1,712	5,594	5,191
Total multifamily revenues	24,131	24,513	72,354	72,825
Total revenues	208,749	192,121	602,862	547,908
Operating Expenses
Office expenses	62,468	56,926	175,240	158,190
Multifamily expenses	6,041	5,950	17,866	17,322
General and administrative	8,441	8,099	27,189	25,573
Depreciation and amortization	69,974	63,827	206,141	181,947
Total operating expenses	146,924	134,802	426,436	383,032
Operating income	61,825	57,319	176,426	164,876
Other income	2,659	2,295	7,152	6,527
Other expenses	(1,659)	(2,916)	(5,156)	(7,828)
Income, including depreciation, from unconsolidated real estate funds	1,137	2,334	4,427	5,564
Interest expense	(35,454)	(36,479)	(110,408)	(109,842)
Income before gains	28,508	22,553	72,441	59,297
Gains on sales of investments in real estate	0	13,245	0	14,327
Net income	28,508	35,798	72,441	73,624
Less: Net income attributable to noncontrolling interests	(2,894)	(3,950)	(7,534)	(7,928)
Net income attributable to common stockholders	$ 25,614	$ 31,848	$ 64,907	$ 65,696
Net income attributable to common stockholders per share – basic (usd per share)	$ 0.154	$ 0.210	$ 0.409	$ 0.440
Net income attributable to common stockholders per share – diluted (usd per share)	0.154	0.206	0.408	0.428
Dividends declared per common share (usd per share)	$ 0.23	$ 0.22	$ 0.69	$ 0.66

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 28,508	$ 35,798	$ 72,441	$ 73,624
Other comprehensive income (loss): cash flow hedges	1,493	18,429	7,129	(17,069)
Comprehensive income	30,001	54,227	79,570	56,555
Less: Comprehensive income attributable to noncontrolling interests	(2,719)	(9,048)	(7,280)	(5,235)
Comprehensive income attributable to common stockholders	$ 27,282	$ 45,179	$ 72,290	$ 51,320

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating Activities
Net income	$ 72,441	$ 73,624
Adjustments to reconcile net income to net cash provided by operating activities:
Income, including depreciation, from unconsolidated real estate funds	(4,427)	(5,564)
Gains on sales of investments in real estate	0	(14,327)
Depreciation and amortization	206,141	181,947
Net accretion of acquired lease intangibles	(13,290)	(13,415)
Straight-line rent	(9,012)	(10,915)
Bad debt expense	139	1,190
Amortization of deferred loan costs	6,865	5,470
Non-cash market value adjustments on interest rate contracts	38	0
Amortization of stock-based compensation	7,910	7,077
Operating distributions from unconsolidated real estate funds	4,427	1,356
Change in working capital components:
Tenant receivables	(830)	(1,451)
Interest payable, accounts payable and deferred revenue	40,110	37,389
Security deposits	2,809	7,461
Other assets	(4,639)	(4,179)
Net cash provided by operating activities	308,682	265,663
Investing Activities
Capital expenditures for improvements to real estate	(80,102)	(57,771)
Capital expenditures for developments	(42,143)	(18,635)
Property acquisitions	(532,324)	(1,619,760)
Proceeds from sale of investments in real estate, net	0	348,203
Loan payments received from related parties	0	763
Acquisitions of additional interests in unconsolidated real estate funds	(2,571)	0
Capital distributions from unconsolidated real estate funds	41,965	21,973
Net cash used in investing activities	(615,175)	(1,325,227)
Financing Activities
Proceeds from borrowings	1,010,500	1,589,500
Repayment of borrowings	(1,330,945)	(786,156)
Loan cost payments	(7,173)	(18,239)
Contributions from noncontrolling interests in consolidated JVs	284,248	459,750
Distributions paid to noncontrolling interests	(28,682)	(26,185)
Dividends paid to common stockholders	(107,045)	(97,575)
Taxes paid on exercise of stock options	(52,867)	(53,467)
Repurchase of OP Units	0	(826)
Proceeds from issuance of common stock, net	593,272	49,379
Net cash provided by financing activities	361,308	1,116,181
Increase in cash and cash equivalents	54,815	56,617
Cash and cash equivalents at the beginning of the year	112,927	101,798
Cash and cash equivalents at quarter end	167,742	158,415
Supplemental Cash Flows Information
Cash paid for interest, net of capitalized interest	103,305	104,205
Capitalized interest paid	1,906	793
Non-cash Investing Transactions
Accrual increase for capital expenditures for improvements to real estate and developments	3,024	68
Capitalized stock-based compensation for improvements to real estate and developments	732	683
Removal of fully depreciated and amortized tenant improvements and lease intangibles	36,367	13,746
Removal of fully amortized acquired lease intangible assets	85	1,241
Removal of fully accreted acquired lease intangible liabilities	4,026	11,142
Application of deposit to purchase price of property	0	75,000
Non-cash Financing Transactions
Gain (loss) from market value adjustments	(4,027)	(37,927)
Dividends declared	111,177	98,501
Common stock issued in exchange for OP Units	13,261	17,733
Unconsolidated Funds [Member]
Non-cash Financing Transactions
Gain (loss) from market value adjustments	$ 610	$ (814)

Overview

Overview	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Overview	Overview Organization and Business Description Douglas Emmett, Inc. is a fully integrated, self-administered and self-managed REIT. We are one of the largest owners and operators of high-quality office and multifamily properties in Los Angeles County, California and Honolulu, Hawaii. We focus on owning, acquiring, developing and managing a substantial share of top-tier office properties and premier multifamily communities in neighborhoods that possess significant supply constraints, high-end executive housing and key lifestyle amenities. Through our interest in our Operating Partnership and its subsidiaries, our consolidated JVs and our unconsolidated Funds, we own or partially own, acquire, develop and manage real estate, consisting primarily of office and multifamily properties in Los Angeles, California and Honolulu, Hawaii. The terms "us," "we" and "our" as used in the financial statements refer to Douglas Emmett, Inc. and its subsidiaries on a consolidated basis. As of September 30, 2017 , our portfolio of properties consisted of the following properties (not including two parcels of land from which we receive rent under ground leases): Consolidated Portfolio Total Portfolio Office (includes ancillary retail space) Wholly-owned properties 52 52 Consolidated JV properties 10 10 Unconsolidated Fund properties — 8 62 70 Multifamily Wholly-owned properties 10 10 Total 72 80 Basis of Presentation The accompanying financial statements are the consolidated financial statements of Douglas Emmett, Inc. and its subsidiaries, including our Operating Partnership and our consolidated JVs. All significant intercompany balances and transactions have been eliminated in our consolidated financial statements. Our Operating Partnership and consolidated JVs are VIEs and we are the primary beneficiary. As of September 30, 2017 , the total consolidated assets, liabilities and equity of the VIEs was $8.11 billion (of which $7.68 billion related to investment in real estate), $4.33 billion and $3.79 billion (of which $1.35 billion related to noncontrolling interests), respectively. The accompanying unaudited interim financial statements have been prepared pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in the financial statements prepared in accordance with GAAP may have been condensed or omitted pursuant to SEC rules and regulations, although we believe that the disclosures are adequate to make their presentation not misleading. The accompanying unaudited interim financial statements include, in our opinion, all adjustments, consisting of normal recurring adjustments, necessary to present fairly the financial information set forth therein. The results of operations for the interim periods are not necessarily indicative of the results that may be expected for the year ending December 31, 2017 . The interim financial statements should be read in conjunction with the consolidated financial statements in our 2016 Annual Report on Form 10-K and the notes thereto. References in this Report to the number of properties, square footage, per square footage amounts, apartment units and geography, are outside the scope of our independent registered public accounting firm’s review of our financial statements in accordance with the standards of the PCAOB.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies We adopted ASU No. 2017-01, "Clarifying the Definition of a Business" in the first quarter of 2017. The ASU changed our accounting policy "Investment in Real Estate" disclosed in our 2016 Annual Report on Form 10-K. The ASU generally requires that our property acquisitions be accounted for as asset purchases, and the related acquisition expenses be capitalized as part of the respective asset. We historically accounted for our property acquisitions as business combinations and expensed the related acquisition expenses as incurred. During the nine months ended September 30, 2016, we expensed $2.9 million of acquisition-related expenses. We have not made any other changes during the period covered by this Report to our significant accounting policies disclosed in our 2016 Annual Report on Form 10-K. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make certain estimates that affect the reported amounts in the consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. Income Taxes We have elected to be taxed as a REIT under the Code. Provided that we qualify for taxation as a REIT, we are generally not subject to corporate-level income tax on the earnings distributed currently to our stockholders that we derive from our REIT qualifying activities. We are subject to corporate-level tax on the earnings that we derive through our TRS. New Accounting Pronouncements Changes to GAAP are established by the FASB in the form of ASUs. We consider the applicability and impact of all ASUs. Recently Issued Accounting Pronouncements In August 2017, the FASB issued ASU No. 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities". The purpose of the ASU is to better align financial reporting for hedging activities with the economic objectives of those activities. The ASU requires periodic hedge ineffectiveness for derivatives designated as cash flow hedges and net investment hedges to be recognized in AOCI and no longer in earnings. The ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those years, which for us would be the first quarter of 2019, and early adoption is permitted. The ASU requires the cumulative effect of initially applying the ASU as an adjustment to AOCI with a corresponding adjustment to the opening balance of retained earnings as of the beginning of the fiscal year that the ASU is adopted. The amended presentation and disclosure guidance is required on a prospective basis. We do not expect the ASU to have a material impact on our financial statements. In February 2016, the FASB issued ASU No. 2016-02, "Leases" (Topic 842). The primary difference between Topic 842 and current GAAP is the recognition of lease assets and liabilities by lessees for leases classified as operating leases under current GAAP. The accounting applied by lessors is largely unchanged from current GAAP. For example, the vast majority of operating leases will remain classified as operating leases, and lessors will continue to recognize lease income for those leases on a straight-line basis over the lease term. Topic 842 requires an entity to separate the lease components from the non-lease components (for example, maintenance services or other activities that transfer a good or service to the customer) in a contract. Only the lease components must be accounted for in accordance with Topic 842. The consideration in the contract is allocated to the lease and non-lease components on a relative standalone price basis for lessees, or in accordance with the allocation guidance in Topic 606 for lessors. Topic 842 defines initial direct costs of a lease (which may be capitalized) as costs that would not have been incurred had the lease not been executed. Costs to negotiate a lease that would have been incurred regardless of whether the lease was executed, such as fixed employee salaries, are not considered to be initial direct costs, and may not be capitalized. The ASU is effective for annual and interim periods beginning after December 15, 2018, which for us would be the first quarter of 2019, and early adoption is permitted. The ASU is required to be adopted using a modified retrospective approach which includes optional practical expedients related to leases that commenced before the effective date. We are currently evaluating the impact of this ASU on our financial statements. In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers" (Topic 606), which provides guidance for the accounting of revenue from contracts with customers. The guidance supersedes the revenue recognition requirements in Topic 605, "Revenue Recognition", and most industry-specific guidance throughout the Industry Topics of the Codification. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09 by one year. In March 2016, the FASB issued ASU No. 2016-08, "Principal versus Agent Considerations (Reporting Revenue Gross versus Net)" which amends Topic 606 and clarifies the guidance for principal versus agent considerations. In April 2016, the FASB issued ASU No. 2016-10, "Identifying Performance Obligations and Licensing" which amends Topic 606 and provides guidance for identifying performance obligations and licensing. In May 2016, the FASB issued ASU No. 2016-12, "Narrow-Scope Improvements and Practical Expedients" which amends Topic 606 and provides guidance for a variety of revenue recognition related topics. In February 2017, the FASB issued ASU No. 2017-05 "Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets" (Subtopic 610-20), which provides guidance for recognizing gains and losses from the transfer of nonfinancial assets in contracts with noncustomers. The various ASU's are effective for annual and interim periods beginning after December 15, 2017, which for us is the first quarter of 2018. Earlier application is permitted for annual and interim periods beginning after December 15, 2016, which for us was the first quarter of 2017. The amendments in these ASU's should be applied retrospectively. We are not planning on early adopting the ASU's and we currently evaluating method of adoption. We do not expect the ASU's to have a material impact on our financial statements. The FASB has not issued any other ASUs during 2017 that we expect to be applicable and have a material impact on our financial statements.

Investment in Real Estate

Investment in Real Estate	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Investment in Real Estate	Investment in Real Estate We generally account for our property acquisitions as asset purchases. Prior to January 1, 2017 we accounted for our acquisitions as business combinations. The results of operations from our acquisitions are included in our consolidated statements of operations after the respective acquisition dates. Acquisitions during the nine months ended September 30, 2017 On April 25, 2017 , a consolidated JV that we manage and in which we own an equity interest acquired two Class A office properties located in downtown Santa Monica, California for a total contract price of $352.8 million . The two properties are located at 1299 Ocean Avenue and 429 Santa Monica Boulevard. On July 20, 2017 , the same JV acquired a Class A office property in Beverly Hills, California located at 9665 Wilshire Boulevard, for a contract price of $177.0 million . The table below (in thousands) summarizes our purchase price allocations for the acquisitions. The difference between the contract prices and respective purchase prices below relates to prorations and similar matters: 1299 Ocean 429 Santa Monica 9665 Wilshire Building square footage 206 87 171 Investment in real estate: Land $ 22,748 $ 4,949 $ 5,568 Buildings and improvements 260,188 69,286 175,960 Tenant improvements and lease intangibles 5,010 3,248 1,112 Acquired above and below-market leases, net (10,683 ) (723 ) (4,339 ) Net assets and liabilities acquired $ 277,263 $ 76,760 $ 178,301 Acquisitions during the nine months ended September 30, 2016 Westwood Portfolio Acquisition On February 29, 2016 (Acquisition Date), a consolidated JV which we manage and in which we own an equity interest acquired four Class A office properties located in Westwood, California (Westwood Portfolio) for a contract price of $1.34 billion . As of the Acquisition Date, we had contributed sixty -percent of the equity to the JV, which was subsequently reduced to thirty -percent on May 31, 2016 (Sell Down Date) when we sold half of our equity interest to a third party investor. The table below (in thousands) summarizes our purchase accounting and funding sources for the acquisition: Sources and Uses of Funds Actual at Closing (1) Pro Forma Sell Down Adjustments (2) Pro Forma Building square footage 1,725 1,725 Uses of funds - Investment in real estate: Land $ 94,996 $ 94,996 Buildings and improvements 1,236,786 1,236,786 Tenant improvements and lease intangibles 50,439 50,439 Acquired above and below-market leases, net (3) (49,708 ) (49,708 ) Net assets and liabilities acquired (4) $ 1,332,513 $ 1,332,513 Source of funds: Cash on hand (5) $ 153,745 $ — $ 153,745 Credit facility (6) 290,000 (240,000 ) 50,000 Non-recourse term loan, net (7) 568,768 — 568,768 Noncontrolling interests 320,000 240,000 560,000 Total source of funds $ 1,332,513 $ — $ 1,332,513 ________________________________________________ (1) Reflects the purchase of the Westwood Portfolio on the Acquisition Date when we contributed sixty -percent of the equity to the consolidated JV. (2) Reflects our sale of thirty -percent of the equity in the JV on the Sell Down Date, presented as of the Acquisition Date, treated as in-substance real estate, which reduced our ownership interest in the JV to thirty -percent. We sold the interest for the $240.0 million we contributed plus an additional $1.1 million to compensate us for our costs of holding the investment. We recognized a gain on the sale of $1.1 million . We used the proceeds from the sale to pay down the balance owed on our revolving credit facility. (3) As of the Acquisition Date, the weighted average remaining life of the acquired above-and below-market leases was approximately 4.4 years . (4) The difference between the contract and purchase price related to credits received for prorations and similar matters. (5) Cash paid included a $75.0 million deposit, $67.5 million paid at closing and $11.2 million spent on loan costs in connection with securing the $580.0 million term loan. (6) Reflects borrowings using the Company's credit facility, which bears interest at LIBOR + 1.40% . (7) Reflects 100% (not the Company's pro rata share) of a $580.0 million interest-only non-recourse loan, net of deferred loan costs of $11.2 million incurred to secure the loan. The loan has a seven -year term and is secured by the Westwood Portfolio. Interest on the loan is floating at LIBOR + 1.40% , which has been effectively fixed at 2.37% per annum for five years through interest rate swaps. See Note 7 for information regarding our consolidated debt. The table below (in thousands) presents the revenues and net income attributable to common stockholders from the Westwood Portfolio included in the consolidated statement of operations after the Acquisition Date: Nine Months Ended September 30, 2017 2016 Total office revenues $ 71,530 $ 56,045 Net income attributable to common stockholders (1) $ 4,449 $ 1,444 ______________________________________________________ (1) Excluding transaction costs, net income attributable to common stockholders was $4.4 million and $3.5 million for the nine months ended September 30, 2017 and 2016 , respectively. The table below (in thousands, except per share information) presents the historical results of Douglas Emmett, Inc. and the Westwood Portfolio on a combined basis as if the acquisition was completed on January 1, 2016, based on our thirty -percent ownership interest and includes adjustments that give effect to events that are (i) directly attributable to the acquisition, (ii) expected to have a continuing impact on us, and (iii) are factually supportable. The pro forma reflects the hypothetical impact of the acquisition on us and does not purport to represent what our results of operations would have been had the acquisition occurred on January 1, 2016, or project the results of operations for any future period. The information does not reflect cost savings or operating synergies that may result from the acquisition or the costs to achieve any such potential cost savings or operating synergies. Transaction costs related to the acquisition have been excluded. Nine Months Ended September 30, 2016 Pro forma revenues $ 561,235 Pro forma net income attributable to common stockholders $ 64,623 Pro forma net income attributable to common stockholders per share – basic $ 0.433 Pro forma net income attributable to common stockholders per share – diluted $ 0.421 Other 2016 Acquisitions During the nine months ended September 30, 2016 , a consolidated JV that we manage and in which we own an equity interest acquired two Class A properties: (i) on July 21, 2016 , the JV acquired a multi-tenant office property located in Brentwood, California (12100 Wilshire Boulevard) for a contract price of $225.0 million , and (ii) on September 27, 2016 the JV acquired a multi-tenant office property located in Santa Monica, California (233 Wilshire Boulevard) for a contract price of $139.5 million . As of July 21, 2016 , we had contributed fifty-five percent of the equity to the JV, which was reduced to twenty -percent when we sold thirty-five percent to a third party investor for $51.6 million , which included $194 thousand to compensate us for our costs of holding the investment. We recognized a gain of $587 thousand on the sale, which is included in Gains on sales of investments in real estate in our consolidated statements of operations. In addition to purchasing a thirty-five percent interest from us, investors contributed $139.8 million to the JV. As of September 30, 2016 , including the effect of the sale of our interest, investors hold an aggregate of eighty -percent of the capital interests in the JV. As part of the acquisitions, the JV borrowed a total of $146.0 million under a three year, interest only, non-recourse loan bearing interest at LIBOR + 1.55% . The loan is secured by the acquired properties. See Note 7 . The table below (in thousands) summarizes our purchase accounting for the acquisitions. The difference between the contract prices and respective purchase prices relate to credits received for prorations and similar matters: 233 Wilshire 12100 Wilshire Building square footage 129 365 Investment in real estate: Land $ 9,263 $ 20,164 Buildings and improvements 126,938 199,698 Tenant improvements and lease intangibles 3,488 9,057 Acquired above and below-market leases, net (1,838 ) (4,523 ) Net assets and liabilities acquired $ 137,851 $ 224,396 2016 Disposition During the third quarter of 2016, we sold a 168,000 square foot Class A office property located in Sherman Oaks, California with a carrying value of $42.8 million for a contract price of $56.7 million , and we incurred transaction costs of $1.2 million resulting in a net gain of $12.7 million . The gain is included in Gains on sales of investments in real estate in our consolidated statements of operations.

Acquired Lease Intangibles

Acquired Lease Intangibles	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Acquired Lease Intangibles	Acquired Lease Intangibles Summary of our Acquired Lease Intangibles The table below (in thousands) summarizes our above/below-market leases: September 30, 2017 December 31, 2016 Above-market tenant leases $ 5,461 $ 5,110 Accumulated amortization - above-market tenant leases (3,203 ) (2,379 ) Below-market ground leases 3,198 3,198 Accumulated amortization - below-market ground leases (840 ) (782 ) Acquired lease intangible assets, net $ 4,616 $ 5,147 Below-market tenant leases $ 117,077 $ 104,925 Accumulated accretion - below-market tenant leases (51,433 ) (41,241 ) Above-market ground leases 4,017 16,200 Accumulated accretion - above-market ground leases (547 ) (12,693 ) Acquired lease intangible liabilities, net $ 69,114 $ 67,191 Impact on the Consolidated Statements of Operations The table below (in thousands) summarizes the net amortization/accretion related to our above/below-market leases: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Net accretion of above/below-market tenant leases (1) $ 4,805 $ 5,093 $ 13,265 $ 13,390 Amortization of above-market ground lease (2) (4 ) (4 ) (13 ) (13 ) Accretion of above-market ground lease (3) 13 13 38 38 Total $ 4,814 $ 5,102 $ 13,290 $ 13,415 _______________________________________________ (1) Recorded as a net increase to office and multifamily rental revenues. (2) The amortization of the above-market rent we receive under this ground lease is recorded as a decrease to office parking and other income. (3) The accretion of the above-market rent we pay under this ground lease is recorded as a decrease to office expense.

Investments in Unconsolidated R

Investments in Unconsolidated Real Estate Funds	9 Months Ended
	Sep. 30, 2017
Real Estate Investments, Net [Abstract]
Investments In Unconsolidated Real Estate Funds	Investments in Unconsolidated Real Estate Funds Description of our Funds We manage and own equity interests in three unconsolidated Funds, the Opportunity Fund, Fund X and Partnership X, through which we and investors own eight office properties totaling 1.8 million square feet. We purchased a 3.7% interest in the Opportunity Fund during the second quarter of 2017. The Opportunity Fund's only investment is a 13.1% equity interest in Fund X. At September 30, 2017 , we held direct and indirect equity interests of 3.7% of the Opportunity Fund, 69.1% of Fund X and 24.3% of Partnership X. Our Funds pay us fees and reimburse us for certain expenses related to property management and other services we provide. We also receive distributions based on invested capital and on any profits that exceed certain specified cash returns to the investors. The table below presents (in thousands) cash distributions received from our Funds: Nine Months Ended September 30, 2017 2016 Operating distributions received $ 4,427 $ 1,356 Capital distributions received 41,965 21,973 Total distributions received $ 46,392 $ 23,329 Summarized Financial Information for our Funds The accounting policies of the Funds are consistent with ours. The tables below present (in thousands) selected financial information for the Funds on a combined basis. The amounts presented represent 100% (not our pro-rata share) of amounts related to the Funds, and are based upon historical acquired book value: September 30, 2017 December 31, 2016 Total assets $ 703,776 $ 690,028 Total liabilities $ 524,968 $ 448,544 Total equity $ 178,808 $ 241,484 Nine Months Ended September 30, 2017 2016 Total revenues $ 56,550 $ 54,104 Operating income $ 14,918 $ 14,235 Net income $ 3,974 $ 6,539

Other Assets

Other Assets	9 Months Ended
	Sep. 30, 2017
Other Assets [Abstract]
Other Assets	Other Assets Other assets consisted of the following (in thousands): September 30, 2017 December 31, 2016 Restricted cash $ 121 $ 121 Prepaid expenses 11,481 6,779 Other indefinite-lived intangible 1,988 1,988 Furniture, fixtures and equipment, net 1,078 1,093 Other 2,610 1,933 Total other assets $ 17,278 $ 11,914

Secured Notes Payable and Revol

Secured Notes Payable and Revolving Credit Facility, Net	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Secured Notes Payable and Revolving Credit Facility, Net	Secured Notes Payable and Revolving Credit Facility, Net The following table summarizes (in thousands) our secured notes payable and revolving credit facility: Description Maturity Date (1) Principal Balance as of September 30, 2017 Principal Balance as of December 31, 2016 Variable Interest Rate Fixed Interest Rate (2) Swap Maturity Date Wholly Owned Subsidiaries Term loan (3) — $ — $ 1,000 — — — Term loan (3) — — 349,933 — — — Fannie Mae loans (3) — — 388,080 — — — Term loan (3) — — 345,759 — — — Term loan (4) 2/1/2019 147,719 149,911 N/A 4.00% — Term loan (4) 6/5/2019 282,019 285,000 N/A 3.85% — Fannie Mae loan 10/1/2019 145,000 145,000 LIBOR + 1.25% N/A — Term loan (5) 4/15/2022 340,000 340,000 LIBOR + 1.40% 2.77% 4/1/2020 Term loan (5) 7/27/2022 180,000 180,000 LIBOR + 1.45% 3.06% 7/1/2020 Term loan (5) 11/1/2022 400,000 400,000 LIBOR + 1.35% 2.64% 11/1/2020 Term loan (5) 6/23/2023 360,000 360,000 LIBOR + 1.55% 2.57% 7/1/2021 Term loan (5) 12/23/2023 220,000 220,000 LIBOR + 1.70% 3.62% 12/23/2021 Term loan (5) 1/1/2024 300,000 300,000 LIBOR + 1.55% 3.46% 1/1/2022 Fannie Mae loan (5) 4/1/2025 102,400 102,400 LIBOR + 1.25% 2.84% 3/1/2020 Fannie Mae loans (5) 12/1/2025 115,000 115,000 LIBOR + 1.25% 2.76% 12/1/2020 Fannie Mae loans (5)(6) 6/1/2027 550,000 — LIBOR + 1.37% 3.51% 6/1/2022 Revolving credit facility (7) 8/21/2020 — — LIBOR + 1.40% N/A — Total Wholly Owned Subsidiary Debt 3,142,138 3,682,083 Consolidated JVs Term loan 7/21/2019 365,500 146,000 LIBOR + 1.55% N/A — Term loan (5) 2/28/2023 580,000 580,000 LIBOR + 1.40% 2.37% 3/1/2021 Total Consolidated Debt (8) 4,087,638 4,408,083 Deferred loan costs, net (38,810 ) (38,546 ) Total Consolidated Debt, net $ 4,048,828 $ 4,369,537 ___________________________________________________ Except as noted below, each loan (including our revolving credit facility) is non-recourse and secured by one or more separate collateral pools consisting of one or more properties, and requires monthly payments of interest only with the outstanding principal due upon maturity. (1) Maturity dates include the effect of extension options. (2) Includes the effect of interest rate swaps and excludes the effect of prepaid loan fees. See Note 9 for details of our interest rate swaps. (3) At September 30, 2017 , this loan had been paid off. (4) Require monthly payments of principal and interest. Principal amortization is based upon a 30 -year amortization schedule. (5) Loan agreement includes a zero-percent LIBOR floor. The corresponding swaps do not include such a floor. (6) Effective rate decreases to 3.16% on November 1, 2017 . (7) $400.0 million revolving credit facility. Unused commitment fees range from 0.15% to 0.20% . (8) See Note 12 for our fair value disclosures. Debt Statistics The following table summarizes (in thousands) our fixed and floating rate debt: Principal Balance as of September 30, 2017 Principal Balance as of December 31, 2016 Aggregate swapped to fixed rate loans $ 3,147,400 $ 2,985,480 Aggregate fixed rate loans 429,738 1,131,603 Aggregate floating rate loans 510,500 291,000 Total Debt $ 4,087,638 $ 4,408,083 The following table summarizes our fixed rate debt statistics: Fixed Rate Debt (fixed under the terms of the loan or a swap) Principal balance (in billions) $3.58 Weighted average remaining life (including extension options) 5.8 years Weighted average remaining fixed interest period 3.3 years Weighted average annual interest rate 3.08% Future Principal Payments At September 30, 2017 , the minimum future principal payments due on our secured notes payable and revolving credit facility, excluding the impact of any maturity extension options, were as follows (in thousands): Twelve months ending September 30: 2018 $ 8,294 2019 786,944 2020 325,000 2021 115,000 2022 640,000 Thereafter 2,212,400 Total future principal payments $ 4,087,638 Loan Costs Deferred loan costs are net of accumulated amortization of $15.9 million and $15.4 million at September 30, 2017 and December 31, 2016 , respectively. The table below presents (in thousands) our loan costs, which are included in Interest Expense in our consolidated statements of operations: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Loan costs expensed $ 163 $ — $ 539 $ 818 Deferred loan cost amortization 2,343 2,227 6,865 5,470 Total $ 2,506 $ 2,227 $ 7,404 $ 6,288

Interest Payable, Accounts Paya

Interest Payable, Accounts Payable and Deferred Revenue	9 Months Ended
	Sep. 30, 2017
Accounts Payable and Accrued Liabilities [Abstract]
Interest Payable, Accounts Payable and Deferred Revenue	Interest Payable, Accounts Payable and Deferred Revenue Interest payable, accounts payable and deferred revenue consisted of the following (in thousands): September 30, 2017 December 31, 2016 Interest payable $ 9,760 $ 9,561 Accounts payable and accrued liabilities 80,572 36,880 Deferred revenue 28,031 28,788 Total interest payable, accounts payable and deferred revenue $ 118,363 $ 75,229

Derivative Contracts

Derivative Contracts	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Contracts	Derivative Contracts Derivative Summary As of September 30, 2017 , all of our interest rate swaps, which include the interest rate swaps of our consolidated JVs and our unconsolidated Funds, were designated as cash flow hedges: Number of Interest Rate Swaps Notional (in thousands) Consolidated derivatives (1) 26 $ 3,147,400 Unconsolidated Funds' derivatives (2) 4 $ 510,000 ___________________________________________________ (1) The notional amount includes 100% , not our pro-rata share, of our consolidated JVs' derivatives. (2) The notional amount includes 100% , not our pro-rata share, of our unconsolidated Funds' derivatives. Credit-risk-related Contingent Features We have agreements with each of our interest rate swap counterparties that contain a provision under which we could also be declared in default on our derivative obligations if we default on the underlying indebtedness that we are hedging. As of September 30, 2017 , there have been no events of default with respect to our interest rate swaps or our unconsolidated Funds' interest rate swaps. We do not post collateral for our swaps in a liability position. The fair value of our interest rate swaps in a liability position were as follows (in thousands): Fair value of derivatives in a liability position (1) September 30, 2017 December 31, 2016 Consolidated derivatives (2) $ 2,636 $ 7,689 Unconsolidated Funds' derivatives (3) $ — $ — __________________________________________________________________________________ (1) Includes accrued interest and excludes adjustments for credit risk. (2) Includes 100% , not our pro-rata share, of our consolidated JVs' derivatives. (3) Our unconsolidated Funds did not have any derivatives in a liability position. Counterparty Credit Risk We are also subject to credit risk from the counterparties on our interest rate swap and interest rate cap contracts. We seek to minimize our credit risk by entering into agreements with a variety of high quality counterparties with investment grade ratings. We do not receive collateral for our swaps in an asset position. The fair value of our interest rate swaps in an asset position were as follows (in thousands): Fair value of derivatives in an asset position (1) September 30, 2017 December 31, 2016 Consolidated derivatives (2) $ 37,258 $ 35,144 Unconsolidated Funds' derivatives (3) $ 4,437 $ 3,724 ___________________________________________________ (1) Includes accrued interest and excludes adjustments for credit risk. (2) Includes 100% , not our pro-rata share, of our consolidated JVs' derivatives. (3) Includes 100% , not our pro-rata share, of our unconsolidated Funds' derivatives. Impact of Hedges on AOCI and Consolidated Statements of Operations The table below presents (in thousands) the effect of derivative instruments on our AOCI and statements of operations: Nine Months Ended September 30, 2017 2016 Derivatives Designated as Cash Flow Hedges: Loss recorded in AOCI - consolidated derivatives (1)(5) $ (4,027 ) $ (37,927 ) Gain (loss) recorded in AOCI - unconsolidated Funds' derivatives (2)(5) $ 610 $ (814 ) Loss reclassified from AOCI - consolidated derivatives (3)(5) $ (10,353 ) $ (21,361 ) Loss reclassified from AOCI - unconsolidated Funds' derivatives (4)(5) $ (193 ) $ (311 ) Gain recorded - consolidated derivatives (6) $ 38 $ — Derivatives Not Designated as Cash Flow Hedges: Gain (loss) recorded as interest expense (7) $ — $ — ___________________________________________________ (1) Represents the effective portion of the change in fair value of interest rate swaps. (2) Represents our share of the effective portion of the change in fair value of our unconsolidated Funds' interest rate swaps. (3) Reclassified from AOCI as an increase to Interest expense. (4) Reclassified from AOCI as an increase (decrease) to Income, including depreciation, from unconsolidated real estate funds (our share). (5) See the reconciliation of our AOCI in Note 10 . (6) Represents the ineffective portion of the change in fair value of interest rate swaps, which is recorded as a decrease (increase) to interest expense. Our unconsolidated Funds did not have any ineffectiveness related to their interest rate swaps. (7) We and our unconsolidated Funds do not have any derivatives that are not designated as cash flow hedges. Future Reclassifications from AOCI At September 30, 2017 , our estimate of the AOCI related to derivatives, designated as cash flow hedges, that will be reclassified to earnings during the next twelve months as swap interest payments are made, is presented in the table below (in thousands): Consolidated derivatives (1) $ (702 ) Unconsolidated Funds' derivatives (2) $ 772 ________________________________________ (1) Reclassified as an increase to Interest expense. (2) Reclassified as an increase to Income, including depreciation, from unconsolidated real estate funds (our share).

Equity

Equity	9 Months Ended
	Sep. 30, 2017
Stockholders' Equity Note [Abstract]
Equity	Equity Equity Transactions During the nine months ended September 30, 2017 , we (i) acquired 986 thousand OP Units in exchange for issuing an equal number of shares of our common stock to the holders of the OP Units, (ii) issued 1.3 million shares of our common stock for the exercise of 3.9 million stock options on a net settlement basis (net of the exercise price and related taxes) and (iii) issued 15.7 million shares of our common stock under our ATM program for net proceeds of $593.3 million . During the nine months ended September 30, 2016 , we (i) acquired 1.3 million OP Units in exchange for issuing an equal number of shares of our common stock to the holders of the OP Units, (ii) acquired 25 thousand OP Units for $826 thousand in cash, at an average price of $33.05 per OP Unit, (iii) issued 1.5 million shares of our common stock for the exercise of 7.6 million stock options on a net settlement basis (net of the exercise price and related taxes) and (iv) issued 1.4 million shares of our common stock under our ATM program for net proceeds of $49.4 million . We also created two JV's to acquire various properties: (i) in the first JV, which acquired the Westwood Portfolio, investors acquired an aggregate of seventy -percent of the capital interests, as a result of contributing $320.0 million directly to the JV for a forty -percent interest and acquiring a thirty -percent interest from us for $241.1 million (resulting in a gain of $1.1 million ), and (ii) in the second JV, which acquired properties during the third quarter, investors acquired an aggregate of eighty -percent of the capital interests, as a result of contributing $139.8 million directly to the JV and acquiring a thirty-five -percent interest from us for $51.6 million (resulting in a gain of $587 thousand ). See Note 3 . Condensed Consolidated Statements of Equity The tables below present (in thousands) our condensed consolidated statements of equity: DEI Stockholders' Equity Noncontrolling Interests Total Equity Balance as of January 1, 2017 $ 1,921,143 $ 1,092,928 $ 3,014,071 Net income 64,907 7,534 72,441 Cash flow hedge fair value adjustments 7,383 (254 ) 7,129 Contributions to consolidated JVs — 284,248 284,248 Dividends and distributions (111,177 ) (28,682 ) (139,859 ) Exchange of OP units for common stock 13,261 (13,261 ) — Exercise of stock options (1) (52,867 ) — (52,867 ) Stock-based compensation — 8,642 8,642 Sale of common stock, net of offering costs 593,272 — 593,272 Balance as of September 30, 2017 $ 2,435,922 $ 1,351,155 $ 3,787,077 __________________________________________________ (1) Reflects withholding taxes. We issued shares of our common stock for the exercise of stock options on a net settlement basis (net of the exercise price and related taxes). DEI Stockholders' Equity Noncontrolling Interests Total Equity Balance as of January 1, 2016 $ 1,926,211 $ 355,337 $ 2,281,548 Net income 65,696 7,928 73,624 Cash flow hedge fair value adjustments (14,376 ) (2,693 ) (17,069 ) Contributions to consolidated JV — 459,750 459,750 Sale of equity interest in consolidated JV — 291,029 291,029 Dividends and distributions (98,501 ) (26,185 ) (124,686 ) Exchange of OP units for common stock 17,733 (17,733 ) — Repurchase of OP units (498 ) (328 ) (826 ) Exercise of stock options (1) (53,467 ) — (53,467 ) Stock-based compensation — 7,759 7,759 Sale of common stock, net of offering costs 49,379 — 49,379 Balance as of September 30, 2016 $ 1,892,177 $ 1,074,864 $ 2,967,041 __________________________________________________ (1) Reflects withholding taxes. We issued shares of our common stock for the exercise of stock options on a net settlement basis (net of the exercise price and related taxes). Noncontrolling Interests Our noncontrolling interests consist of interests in our Operating Partnership and consolidated JVs which are not owned by us. Noncontrolling interests in our Operating Partnership consist of OP Units and fully-vested LTIP Units, and represented approximately 13% of our Operating Partnership's total interests as of September 30, 2017 when we and our Operating Partnership had 169.5 million shares of common stock and 24.7 million OP Units and fully-vested LTIP Units outstanding. A share of our common stock, an OP Unit and an LTIP Unit (once vested and booked up) have essentially the same economic characteristics, sharing equally in the distributions from our Operating Partnership. Investors who own OP Units have the right to cause our Operating Partnership to redeem their OP Units for an amount of cash per unit equal to the market value of one share of our common stock at the date of redemption, or, at our election, exchange their OP Units for shares of our common stock on a one-for-one b asis. LTIP Units have been granted to our key employees and non-employee directors as part of their compensation. These awards generally vest over the service period and once vested can generally be converted to OP Units. Changes in our Ownership Interest in our Operating Partnership The table below presents (in thousands) the effect on our equity from net income attributable to common stockholders and changes in our ownership interest in our Operating Partnership: Nine Months Ended September 30, 2017 2016 Net income attributable to common stockholders $ 64,907 $ 65,696 Transfers from noncontrolling interests: Exchange of OP Units with noncontrolling interests 13,261 17,733 Repurchase of OP Units from noncontrolling interests — (498 ) Net transfers from noncontrolling interests 13,261 17,235 Change from net income attributable to common stockholders and transfers from noncontrolling interests $ 78,168 $ 82,931 AOCI Reconciliation (1) The table below presents (in thousands) a reconciliation of our AOCI, which consists solely of adjustments related to derivatives designated as cash flow hedges for the nine months ended September 30 : 2017 2016 Beginning balance $ 15,156 $ (9,285 ) Other comprehensive loss before reclassifications - our derivatives (4,027 ) (37,927 ) Other comprehensive income (loss) before reclassifications - our Funds' derivatives 610 (814 ) Reclassifications from AOCI - our derivatives (2) 10,353 21,361 Reclassifications from AOCI - our Funds' derivatives (3) 193 311 Net current period OCI 7,129 (17,069 ) OCI attributable to noncontrolling interests 254 2,693 OCI attributable to common stockholders 7,383 (14,376 ) Ending balance $ 22,539 $ (23,661 ) ___________________________________________________ (1) See Note 9 for the details of our derivatives and Note 12 for our derivative fair value disclosures. (2) Reclassification as an increase to Interest expense. (3) Reclassification as an (increase) decrease to Income, including depreciation, from unconsolidated real estate funds. Equity Compensation On June 2, 2016, the Douglas Emmett 2016 Omnibus Stock Incentive Plan ("2016 Plan") became effective after receiving stockholder approval, superseding our prior plan, the Douglas Emmett 2006 Omnibus Stock Incentive Plan ("2006 Plan"), both of which allow for awards to our directors, officers, employees and consultants. The key terms of the two plans are substantially identical, except for the date of expiration, the number of shares authorized for grants and various technical provisions. Grants after June 2, 2016 were awarded under the 2016 Plan, while grants prior to that date were awarded under the 2006 Plan (grants under the 2006 Plan remain outstanding according to their terms). Both plans are administered by the compensation committee of our board of directors. Total net stock-based compensation expense was $2.6 million and $2.3 million for the three months ended September 30, 2017 and 2016 , and $7.9 million and $7.1 million for the nine months ended September 30, 2017 and 2016 respectively. These amounts are net of capitalized stock-based compensation of $257 thousand and $235 thousand for the three months ended September 30, 2017 and 2016 , and $732 thousand and $683 thousand for the nine months ended September 30, 2017 and 2016 respectively. The intrinsic value of options exercised was $0.4 million and $2.1 million for the three months ended September 30, 2017 and 2016 , and $102.5 million and $104.0 million during the nine months ended September 30, 2017 and 2016 , respectively.

EPS

EPS	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
EPS	EPS We calculate basic EPS by dividing the net income attributable to common stockholders for the period by the weighted average number of common shares outstanding during the period. We calculate diluted EPS by dividing the net income attributable to common stockholders for the period by the weighted average number of common shares and dilutive instruments outstanding during the period using the treasury stock method. We account for unvested LTIP awards that contain nonforfeitable rights to dividends as participating securities and include these securities in the computation of basic and diluted EPS using the two-class method. The table below presents the calculation of basic and diluted EPS: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Numerator (in thousands): Net income attributable to common stockholders $ 25,614 $ 31,848 $ 64,907 $ 65,696 Allocation to participating securities: Unvested LTIP Units (158 ) (180 ) (345 ) (365 ) Numerator for basic and diluted net income attributable to common stock holders $ 25,456 $ 31,668 $ 64,562 $ 65,331 Denominator (in thousands): Weighted average shares of common stock outstanding - basic 165,471 150,753 158,000 148,578 Effect of dilutive securities: Stock options (1) 49 2,666 419 4,241 Weighted average shares of common stock and common stock equivalents outstanding - diluted 165,520 153,419 158,419 152,819 Basic EPS: Net income attributable to common stockholders per share $ 0.154 $ 0.210 $ 0.409 $ 0.440 Diluted EPS: Net income attributable to common stockholders per share $ 0.154 $ 0.206 $ 0.408 $ 0.428 ____________________________________________________ (1) The following securities (in thousands) were excluded from the computation of the weighted average shares of common stock and common stock equivalents outstanding - diluted because the effect of including them would be anti-dilutive to the calculation of diluted EPS: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 OP Units 24,790 24,788 24,750 25,148 Vested LTIP Units 8 675 358 766

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments Our estimates of the fair value of financial instruments were determined using available market information and widely used valuation methods. Considerable judgment is necessary to interpret market data and determine an estimated fair value. The use of different market assumptions or valuation methods may have a material effect on the estimated fair values. The FASB fair value framework hierarchy distinguishes between assumptions based on market data obtained from sources independent of the reporting entity, and the reporting entity’s own assumptions about market-based inputs. The hierarchy is as follows: Level 1 - inputs utilize unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 - inputs are observable either directly or indirectly for similar assets and liabilities in active markets. Level 3 - inputs are unobservable assumptions generated by the reporting entity As of September 30, 2017 , we did not have any fair value estimates of financial instruments using Level 3 inputs. Financial instruments disclosed at fair value Short term financial instruments: The carrying amounts for cash and cash equivalents, tenant receivables, revolving credit line, interest payable, accounts payable, security deposits and dividends payable approximate fair value because of the short-term nature of these instruments. Secured notes payable: See Note 7 for the details of our secured notes payable. We estimate the fair value of our secured notes payable, which includes the secured notes payable of our consolidated JVs, by calculating the credit-adjusted present value of the principal and interest payments for each secured note payable. The calculation incorporates observable market interest rates which we consider to be Level 2 inputs, assumes that the loans will be outstanding through maturity, and excludes any maturity extension options. The table below presents (in thousands) the estimated fair value of our secured notes payable: Secured Notes Payable: September 30, 2017 December 31, 2016 Fair value $ 4,080,901 $ 4,429,224 Carrying value $ 4,087,638 $ 4,408,083 Financial instruments measured at fair value Derivative instruments: See Note 9 for the details of our derivatives. We present our derivatives on the balance sheet at fair value, on a gross basis, excluding accrued interest. We estimate the fair value of our derivative instruments by calculating the credit-adjusted present value of the expected future cash flows of each derivative. The calculation incorporates the contractual terms of the derivatives, observable market interest rates which we consider to be Level 2 inputs, and credit risk adjustments to reflect the counterparty's as well as our own nonperformance risk. Our derivatives are not subject to master netting arrangements. The table below presents (in thousands) the estimated fair value of our derivatives: September 30, 2017 December 31, 2016 Derivative Assets: Fair value - consolidated derivatives (1) $ 37,115 $ 35,656 Fair value - unconsolidated Funds' derivatives (2) $ 4,632 $ 3,605 Derivative Liabilities: Fair value - consolidated derivatives (1) $ 2,002 $ 6,830 Fair value - unconsolidated Funds' derivatives (2) $ — $ — ____________________________________________________ (1) Consolidated derivatives, which include 100% , not our pro-rata share, of our consolidated JVs' derivatives, are included in interest rate contracts in our consolidated balance sheet. The fair value excludes accrued interest which is included in interest payable in the consolidated balance sheet. (2) Represents 100% , not our pro-rata share, of our unconsolidated Funds' derivatives. Our pro-rata share of the amounts related to the unconsolidated Funds' derivatives is included in our Investment in unconsolidated real estate funds in our consolidated balance sheet. See Note 5 for more information regarding our unconsolidated Funds.

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting Segment information is prepared on the same basis that our management reviews information for operational decision-making purposes. We operate in two business segments: (i) the acquisition, development, ownership and management of office real estate and (ii) the acquisition, development, ownership and management of multifamily real estate. The services for our office segment primarily include rental of office space and other tenant services, including parking and storage space rental. The services for our multifamily segment include rental of apartments and other tenant services, including parking and storage space rental. Asset information by segment is not reported because we do not use this measure to assess performance or make decisions to allocate resources. Therefore, depreciation and amortization expense is not allocated among segments. General and administrative expenses and interest expense are not included in segment profit as our internal reporting addresses these items on a corporate level. Segment profit is not a measure of operating income or cash flows from operating activities as measured by GAAP, it is not indicative of cash available to fund cash needs, and it should not be considered as an alternative to cash flows as a measure of liquidity. Not all companies may calculate segment profit in the same manner. We consider segment profit to be an appropriate supplemental measure to net income because it can assist both investors and management in understanding the core operations of our properties. The table below presents (in thousands) the operating activity of our reportable segments: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Office Segment Total office revenues $ 184,618 $ 167,608 $ 530,508 $ 475,083 Office expenses (62,468 ) (56,926 ) (175,240 ) (158,190 ) Office segment profit 122,150 110,682 355,268 316,893 Multifamily Segment Total multifamily revenues 24,131 24,513 72,354 72,825 Multifamily expenses (6,041 ) (5,950 ) (17,866 ) (17,322 ) Multifamily segment profit 18,090 18,563 54,488 55,503 Total profit from all segments $ 140,240 $ 129,245 $ 409,756 $ 372,396 The table below (in thousands) is a reconciliation of the total profit from all segments to net income attributable to common stockholders: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Total profit from all segments $ 140,240 $ 129,245 $ 409,756 $ 372,396 General and administrative (8,441 ) (8,099 ) (27,189 ) (25,573 ) Depreciation and amortization (69,974 ) (63,827 ) (206,141 ) (181,947 ) Other income 2,659 2,295 7,152 6,527 Other expenses (1,659 ) (2,916 ) (5,156 ) (7,828 ) Income, including depreciation, from unconsolidated real estate funds 1,137 2,334 4,427 5,564 Interest expense (35,454 ) (36,479 ) (110,408 ) (109,842 ) Income before gains 28,508 22,553 72,441 59,297 Gains on sales of investments in real estate — 13,245 — 14,327 Net income 28,508 35,798 72,441 73,624 Less: Net income attributable to noncontrolling interests (2,894 ) (3,950 ) (7,534 ) (7,928 ) Net income attributable to common stockholders $ 25,614 $ 31,848 $ 64,907 $ 65,696

Future Minimum Lease Rental Rec

Future Minimum Lease Rental Receipts	9 Months Ended
	Sep. 30, 2017
Operating Leases, Future Minimum Payments Receivable [Abstract]
Future Minimum Lease Rental Receipts	Future Minimum Lease Rental Receipts We lease space to tenants primarily under non-cancelable operating leases that generally contain provisions for a base rent plus reimbursement of certain operating expenses, and we own fee interests in two parcels of land subject to ground leases from which we earn ground rent income. The table below presents (in thousands) the future minimum base rentals on our non-cancelable office tenant and ground leases at September 30, 2017 : Twelve months ending September 30: 2018 $ 528,867 2019 477,732 2020 416,289 2021 333,742 2022 251,975 Thereafter 657,646 Total future minimum base rentals (1) $ 2,666,251 _____________________________________________________ (1) Does not include (i) residential leases, which typically have a term of one year or less, (ii) holdover rent, (iii) other types of rent such as storage rent and antenna rent, (iv) tenant reimbursements, (v) straight line rent, (vi) amortization/accretion of acquired above/below-market lease intangibles and (vii) percentage rents. The amounts assume that early termination options held by tenants are not exercised.

Future Minimum Lease Rental Pay

Future Minimum Lease Rental Payments	9 Months Ended
	Sep. 30, 2017
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Future Minimum Lease Rental Payments	Future Minimum Lease Rental Payments We incurred ground rent expense for a ground lease of $183 thousand for the three months ended September 30, 2017 and 2016 and $550 thousand for the nine months ended September 30, 2017 and 2016 . The table below (in thousands) presents the future minimum ground lease payments as of September 30, 2017 : Twelve months ending September 30: 2018 $ 733 2019 733 2020 733 2021 733 2022 733 Thereafter 47,094 Total future minimum lease payments (1) $ 50,759 ___________________________________________________ (1) Lease term ends on December 31, 2086 . Ground rent is fixed at $733 thousand per year until February 28, 2019 , and will then reset to the greater of the existing ground rent or market. The table above assumes that the rental payments will continue to be $733 thousand per year after February 28, 2019 .

Commitments, Contingencies and

Commitments, Contingencies and Guarantees	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies and Guarantees	Commitments, Contingencies and Guarantees Legal Proceedings From time to time, we are party to various lawsuits, claims and other legal proceedings that arise in the ordinary course of our business. Excluding ordinary, routine litigation incidental to our business, we are not currently a party to any legal proceedings that we believe would reasonably be expected to have a materially adverse effect on our business, financial condition or results of operations. Concentration of Risk We are subject to credit risk with respect to our tenant receivables and deferred rent receivables related to our tenant leases. Our tenants' ability to honor the terms of their respective leases remains dependent upon economic, regulatory and social factors. We seek to minimize our credit risk from our tenant leases by (i) targeting smaller, more affluent tenants, from a diverse mix of industries, (ii) performing credit evaluations of prospective tenants and (iii) obtaining security deposits or letters of credit from our tenants. For the nine months ended September 30, 2017 and 2016 , no tenant accounted for more than 10% of our total revenues. All of our properties, including the properties of our consolidated JVs and unconsolidated Funds, are located in Los Angeles County, California and Honolulu, Hawaii, and we are therefore susceptible to adverse economic and regulatory developments, as well as natural disasters, in those markets. We are also subject to credit risk with respect to our interest rate swap counterparties that we use to manage the risk associated with our floating rate debt. We do not post or receive collateral with respect to our swap transactions. See Note 9 for the details of our interest rate contracts. We seek to minimize our credit risk by entering into agreements with a variety of high quality counterparties with investment grade ratings. We have significant cash balances invested in a variety of short-term money market funds that are intended to preserve principal value and maintain a high degree of liquidity while providing current income. These investments are not insured against loss of principal and there is no guarantee that our investments in these funds will be redeemable at par value. We also have significant cash balances in bank accounts with high quality financial institutions with investment grade ratings. Interest bearing bank accounts at each U.S. banking institution are insured by the FDIC up to $250 thousand . Asset Retirement Obligations Conditional asset retirement obligations represent a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement is conditional on a future event that may or may not be within our control. A liability for a conditional asset retirement obligation must be recorded if the fair value of the obligation can be reasonably estimated. Environmental site assessments have identified twenty-seven buildings in our Consolidated Portfolio and four buildings owned by our unconsolidated Funds which contain asbestos, and would have to be removed in compliance with applicable environmental regulations if these properties are demolished or undergo major renovations. As of September 30, 2017 , the obligations to remove the asbestos from these properties have indeterminable settlement dates, and we are unable to reasonably estimate the fair value of the associated conditional asset retirement obligation. Development Contracts During the first quarter of 2016, we commenced building an additional 475 apartments (net of existing apartments removed) at our Moanalua Hillside Apartments in Honolulu, Hawaii. The $120.0 million estimated cost of the new apartments does not include the cost of the land which we already owned before beginning the project. We are also investing additional capital to upgrade the existing apartments, improve the parking and landscaping, building a new leasing and management office, and construct a new recreation and fitness facility with a new pool. In West Los Angeles, we plan to build a high-rise apartment building with 376 apartments. We expect the cost of the development to be approximately $180.0 million to $200.0 million , which does not include the cost of the land or the existing underground parking garage, both of which we owned before beginning the project. As of September 30, 2017 , we had an aggregate remaining contractual commitment for these development projects of approximately $73.1 million . Other Contracts As of September 30, 2017 , we had an aggregate remaining contractual commitment for capital expenditure projects and repositionings of approximately $4.8 million . Guarantees We made certain environmental and other limited indemnities and guarantees covering customary non-recourse carve- outs for our unconsolidated Funds' debt. We also guaranteed the related swaps. Our Funds have agreed to indemnify us for any amounts that we would be required to pay under these agreements. As of September 30, 2017 , all of the obligations under the related debt and swap agreements have been performed in accordance with the terms of those agreements. The table below summarizes our Funds' debt as of September 30, 2017 . The amounts represent 100% (not our pro-rata share) of amounts related to our Funds: Fund (1) Loan Maturity Date Principal Balance (in millions) Variable Interest Rate Swap Fixed Interest Rate Swap Maturity Date Partnership X (2)(4) 3/1/2023 $ 110.0 LIBOR + 1.40% 2.30% 3/1/2021 Fund X (3)(4)(5) 7/1/2024 400.0 LIBOR + 1.65% 3.44% 7/1/2022 $ 510.0 ___________________________________________________ (1) See Note 5 for more information regarding our unconsolidated Funds. (2) Floating rate term loan, swapped to fixed, which is secured by two properties and requires monthly payments of interest only, with the outstanding principal due upon maturity. As of September 30, 2017 , assuming a zero-percent LIBOR interest rate during the remaining life of the swap, the maximum future payments under the swap agreement were $3.4 million . (3) Floating rate term loan, swapped to fixed, which is secured by six properties and requires monthly payments of interest only, with the outstanding principal due upon maturity. As of September 30, 2017 , assuming a zero-percent LIBOR interest rate during the remaining life of the swap, the maximum future payments under the swap agreement were $34.5 million . (4) Loan agreement includes a zero-percent LIBOR floor. The corresponding swaps do not include such a floor. (5) Loan agreement includes the requirement to purchase an interest rate cap if one month LIBOR equals or exceeds 3.56% for fourteen consecutive days after the related swap matures.

Summary of Significant Accoun23

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying financial statements are the consolidated financial statements of Douglas Emmett, Inc. and its subsidiaries, including our Operating Partnership and our consolidated JVs. All significant intercompany balances and transactions have been eliminated in our consolidated financial statements. Our Operating Partnership and consolidated JVs are VIEs and we are the primary beneficiary.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make certain estimates that affect the reported amounts in the consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates.
Income Taxes	Income Taxes We have elected to be taxed as a REIT under the Code. Provided that we qualify for taxation as a REIT, we are generally not subject to corporate-level income tax on the earnings distributed currently to our stockholders that we derive from our REIT qualifying activities. We are subject to corporate-level tax on the earnings that we derive through our TRS.
New Accounting Pronouncements	New Accounting Pronouncements Changes to GAAP are established by the FASB in the form of ASUs. We consider the applicability and impact of all ASUs. Recently Issued Accounting Pronouncements In August 2017, the FASB issued ASU No. 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities". The purpose of the ASU is to better align financial reporting for hedging activities with the economic objectives of those activities. The ASU requires periodic hedge ineffectiveness for derivatives designated as cash flow hedges and net investment hedges to be recognized in AOCI and no longer in earnings. The ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those years, which for us would be the first quarter of 2019, and early adoption is permitted. The ASU requires the cumulative effect of initially applying the ASU as an adjustment to AOCI with a corresponding adjustment to the opening balance of retained earnings as of the beginning of the fiscal year that the ASU is adopted. The amended presentation and disclosure guidance is required on a prospective basis. We do not expect the ASU to have a material impact on our financial statements. In February 2016, the FASB issued ASU No. 2016-02, "Leases" (Topic 842). The primary difference between Topic 842 and current GAAP is the recognition of lease assets and liabilities by lessees for leases classified as operating leases under current GAAP. The accounting applied by lessors is largely unchanged from current GAAP. For example, the vast majority of operating leases will remain classified as operating leases, and lessors will continue to recognize lease income for those leases on a straight-line basis over the lease term. Topic 842 requires an entity to separate the lease components from the non-lease components (for example, maintenance services or other activities that transfer a good or service to the customer) in a contract. Only the lease components must be accounted for in accordance with Topic 842. The consideration in the contract is allocated to the lease and non-lease components on a relative standalone price basis for lessees, or in accordance with the allocation guidance in Topic 606 for lessors. Topic 842 defines initial direct costs of a lease (which may be capitalized) as costs that would not have been incurred had the lease not been executed. Costs to negotiate a lease that would have been incurred regardless of whether the lease was executed, such as fixed employee salaries, are not considered to be initial direct costs, and may not be capitalized. The ASU is effective for annual and interim periods beginning after December 15, 2018, which for us would be the first quarter of 2019, and early adoption is permitted. The ASU is required to be adopted using a modified retrospective approach which includes optional practical expedients related to leases that commenced before the effective date. We are currently evaluating the impact of this ASU on our financial statements. In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers" (Topic 606), which provides guidance for the accounting of revenue from contracts with customers. The guidance supersedes the revenue recognition requirements in Topic 605, "Revenue Recognition", and most industry-specific guidance throughout the Industry Topics of the Codification. In August 2015, the FASB issued ASU No. 2015-14, which defers the effective date of ASU No. 2014-09 by one year. In March 2016, the FASB issued ASU No. 2016-08, "Principal versus Agent Considerations (Reporting Revenue Gross versus Net)" which amends Topic 606 and clarifies the guidance for principal versus agent considerations. In April 2016, the FASB issued ASU No. 2016-10, "Identifying Performance Obligations and Licensing" which amends Topic 606 and provides guidance for identifying performance obligations and licensing. In May 2016, the FASB issued ASU No. 2016-12, "Narrow-Scope Improvements and Practical Expedients" which amends Topic 606 and provides guidance for a variety of revenue recognition related topics. In February 2017, the FASB issued ASU No. 2017-05 "Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets" (Subtopic 610-20), which provides guidance for recognizing gains and losses from the transfer of nonfinancial assets in contracts with noncustomers. The various ASU's are effective for annual and interim periods beginning after December 15, 2017, which for us is the first quarter of 2018. Earlier application is permitted for annual and interim periods beginning after December 15, 2016, which for us was the first quarter of 2017. The amendments in these ASU's should be applied retrospectively. We are not planning on early adopting the ASU's and we currently evaluating method of adoption. We do not expect the ASU's to have a material impact on our financial statements. The FASB has not issued any other ASUs during 2017 that we expect to be applicable and have a material impact on our financial statements.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Our estimates of the fair value of financial instruments were determined using available market information and widely used valuation methods. Considerable judgment is necessary to interpret market data and determine an estimated fair value. The use of different market assumptions or valuation methods may have a material effect on the estimated fair values. The FASB fair value framework hierarchy distinguishes between assumptions based on market data obtained from sources independent of the reporting entity, and the reporting entity’s own assumptions about market-based inputs. The hierarchy is as follows: Level 1 - inputs utilize unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 - inputs are observable either directly or indirectly for similar assets and liabilities in active markets. Level 3 - inputs are unobservable assumptions generated by the reporting entity

Overview (Tables)

Overview (Tables)	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Real Estate Properties	As of September 30, 2017 , our portfolio of properties consisted of the following properties (not including two parcels of land from which we receive rent under ground leases): Consolidated Portfolio Total Portfolio Office (includes ancillary retail space) Wholly-owned properties 52 52 Consolidated JV properties 10 10 Unconsolidated Fund properties — 8 62 70 Multifamily Wholly-owned properties 10 10 Total 72 80

Investment in Real Estate (Tabl

Investment in Real Estate (Tables)	9 Months Ended
	Sep. 30, 2017
Santa Monica Properties [Member]
Real Estate Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The table below (in thousands) summarizes our purchase price allocations for the acquisitions. The difference between the contract prices and respective purchase prices below relates to prorations and similar matters: 1299 Ocean 429 Santa Monica 9665 Wilshire Building square footage 206 87 171 Investment in real estate: Land $ 22,748 $ 4,949 $ 5,568 Buildings and improvements 260,188 69,286 175,960 Tenant improvements and lease intangibles 5,010 3,248 1,112 Acquired above and below-market leases, net (10,683 ) (723 ) (4,339 ) Net assets and liabilities acquired $ 277,263 $ 76,760 $ 178,301
Westwood Portfolio [Member]
Real Estate Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The table below (in thousands) summarizes our purchase accounting and funding sources for the acquisition: Sources and Uses of Funds Actual at Closing (1) Pro Forma Sell Down Adjustments (2) Pro Forma Building square footage 1,725 1,725 Uses of funds - Investment in real estate: Land $ 94,996 $ 94,996 Buildings and improvements 1,236,786 1,236,786 Tenant improvements and lease intangibles 50,439 50,439 Acquired above and below-market leases, net (3) (49,708 ) (49,708 ) Net assets and liabilities acquired (4) $ 1,332,513 $ 1,332,513 Source of funds: Cash on hand (5) $ 153,745 $ — $ 153,745 Credit facility (6) 290,000 (240,000 ) 50,000 Non-recourse term loan, net (7) 568,768 — 568,768 Noncontrolling interests 320,000 240,000 560,000 Total source of funds $ 1,332,513 $ — $ 1,332,513 ________________________________________________ (1) Reflects the purchase of the Westwood Portfolio on the Acquisition Date when we contributed sixty -percent of the equity to the consolidated JV. (2) Reflects our sale of thirty -percent of the equity in the JV on the Sell Down Date, presented as of the Acquisition Date, treated as in-substance real estate, which reduced our ownership interest in the JV to thirty -percent. We sold the interest for the $240.0 million we contributed plus an additional $1.1 million to compensate us for our costs of holding the investment. We recognized a gain on the sale of $1.1 million . We used the proceeds from the sale to pay down the balance owed on our revolving credit facility. (3) As of the Acquisition Date, the weighted average remaining life of the acquired above-and below-market leases was approximately 4.4 years . (4) The difference between the contract and purchase price related to credits received for prorations and similar matters. (5) Cash paid included a $75.0 million deposit, $67.5 million paid at closing and $11.2 million spent on loan costs in connection with securing the $580.0 million term loan. (6) Reflects borrowings using the Company's credit facility, which bears interest at LIBOR + 1.40% . (7) Reflects 100% (not the Company's pro rata share) of a $580.0 million interest-only non-recourse loan, net of deferred loan costs of $11.2 million incurred to secure the loan. The loan has a seven -year term and is secured by the Westwood Portfolio. Interest on the loan is floating at LIBOR + 1.40% , which has been effectively fixed at 2.37% per annum for five years through interest rate swaps. See Note 7 for information regarding our consolidated debt.
Revenue and Net Income Attributable to Common Stockholders from the Westwood Portfolio	The table below (in thousands) presents the revenues and net income attributable to common stockholders from the Westwood Portfolio included in the consolidated statement of operations after the Acquisition Date: Nine Months Ended September 30, 2017 2016 Total office revenues $ 71,530 $ 56,045 Net income attributable to common stockholders (1) $ 4,449 $ 1,444 ______________________________________________________ (1) Excluding transaction costs, net income attributable to common stockholders was $4.4 million and $3.5 million for the nine months ended September 30, 2017 and 2016 , respectively.
Business Acquisition, Pro Forma Information	The table below (in thousands, except per share information) presents the historical results of Douglas Emmett, Inc. and the Westwood Portfolio on a combined basis as if the acquisition was completed on January 1, 2016, based on our thirty -percent ownership interest and includes adjustments that give effect to events that are (i) directly attributable to the acquisition, (ii) expected to have a continuing impact on us, and (iii) are factually supportable. The pro forma reflects the hypothetical impact of the acquisition on us and does not purport to represent what our results of operations would have been had the acquisition occurred on January 1, 2016, or project the results of operations for any future period. The information does not reflect cost savings or operating synergies that may result from the acquisition or the costs to achieve any such potential cost savings or operating synergies. Transaction costs related to the acquisition have been excluded. Nine Months Ended September 30, 2016 Pro forma revenues $ 561,235 Pro forma net income attributable to common stockholders $ 64,623 Pro forma net income attributable to common stockholders per share – basic $ 0.433 Pro forma net income attributable to common stockholders per share – diluted $ 0.421
233 Wilshire and 12100 Wilshire Properties [Member]
Real Estate Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The table below (in thousands) summarizes our purchase accounting for the acquisitions. The difference between the contract prices and respective purchase prices relate to credits received for prorations and similar matters: 233 Wilshire 12100 Wilshire Building square footage 129 365 Investment in real estate: Land $ 9,263 $ 20,164 Buildings and improvements 126,938 199,698 Tenant improvements and lease intangibles 3,488 9,057 Acquired above and below-market leases, net (1,838 ) (4,523 ) Net assets and liabilities acquired $ 137,851 $ 224,396

Acquired Lease Intangibles (Tab

Acquired Lease Intangibles (Tables)	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Acquired Lease Intangibles	The table below (in thousands) summarizes our above/below-market leases: September 30, 2017 December 31, 2016 Above-market tenant leases $ 5,461 $ 5,110 Accumulated amortization - above-market tenant leases (3,203 ) (2,379 ) Below-market ground leases 3,198 3,198 Accumulated amortization - below-market ground leases (840 ) (782 ) Acquired lease intangible assets, net $ 4,616 $ 5,147 Below-market tenant leases $ 117,077 $ 104,925 Accumulated accretion - below-market tenant leases (51,433 ) (41,241 ) Above-market ground leases 4,017 16,200 Accumulated accretion - above-market ground leases (547 ) (12,693 ) Acquired lease intangible liabilities, net $ 69,114 $ 67,191
Schedule of Net Amortization or Accretion of Above/Below-Market Leases	The table below (in thousands) summarizes the net amortization/accretion related to our above/below-market leases: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Net accretion of above/below-market tenant leases (1) $ 4,805 $ 5,093 $ 13,265 $ 13,390 Amortization of above-market ground lease (2) (4 ) (4 ) (13 ) (13 ) Accretion of above-market ground lease (3) 13 13 38 38 Total $ 4,814 $ 5,102 $ 13,290 $ 13,415 _______________________________________________ (1) Recorded as a net increase to office and multifamily rental revenues. (2) The amortization of the above-market rent we receive under this ground lease is recorded as a decrease to office parking and other income. (3) The accretion of the above-market rent we pay under this ground lease is recorded as a decrease to office expense.

Investments in Unconsolidated27

Investments in Unconsolidated Real Estate Funds (Tables)	9 Months Ended
	Sep. 30, 2017
Real Estate Investments, Net [Abstract]
Summary of Statement of Operations for Investments in Unconsolidated Real Estate Funds and Cash Received from Funds	The table below presents (in thousands) cash distributions received from our Funds: Nine Months Ended September 30, 2017 2016 Operating distributions received $ 4,427 $ 1,356 Capital distributions received 41,965 21,973 Total distributions received $ 46,392 $ 23,329 The tables below present (in thousands) selected financial information for the Funds on a combined basis. The amounts presented represent 100% (not our pro-rata share) of amounts related to the Funds, and are based upon historical acquired book value: September 30, 2017 December 31, 2016 Total assets $ 703,776 $ 690,028 Total liabilities $ 524,968 $ 448,544 Total equity $ 178,808 $ 241,484 Nine Months Ended September 30, 2017 2016 Total revenues $ 56,550 $ 54,104 Operating income $ 14,918 $ 14,235 Net income $ 3,974 $ 6,539

Other Assets (Tables)

Other Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Other Assets [Abstract]
Schedule of Other Assets	Other assets consisted of the following (in thousands): September 30, 2017 December 31, 2016 Restricted cash $ 121 $ 121 Prepaid expenses 11,481 6,779 Other indefinite-lived intangible 1,988 1,988 Furniture, fixtures and equipment, net 1,078 1,093 Other 2,610 1,933 Total other assets $ 17,278 $ 11,914

Secured Notes Payable and Rev29

Secured Notes Payable and Revolving Credit Facility, Net (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Schedule of Secured Notes Payable and Revolving Credit Facility	The following table summarizes (in thousands) our secured notes payable and revolving credit facility: Description Maturity Date (1) Principal Balance as of September 30, 2017 Principal Balance as of December 31, 2016 Variable Interest Rate Fixed Interest Rate (2) Swap Maturity Date Wholly Owned Subsidiaries Term loan (3) — $ — $ 1,000 — — — Term loan (3) — — 349,933 — — — Fannie Mae loans (3) — — 388,080 — — — Term loan (3) — — 345,759 — — — Term loan (4) 2/1/2019 147,719 149,911 N/A 4.00% — Term loan (4) 6/5/2019 282,019 285,000 N/A 3.85% — Fannie Mae loan 10/1/2019 145,000 145,000 LIBOR + 1.25% N/A — Term loan (5) 4/15/2022 340,000 340,000 LIBOR + 1.40% 2.77% 4/1/2020 Term loan (5) 7/27/2022 180,000 180,000 LIBOR + 1.45% 3.06% 7/1/2020 Term loan (5) 11/1/2022 400,000 400,000 LIBOR + 1.35% 2.64% 11/1/2020 Term loan (5) 6/23/2023 360,000 360,000 LIBOR + 1.55% 2.57% 7/1/2021 Term loan (5) 12/23/2023 220,000 220,000 LIBOR + 1.70% 3.62% 12/23/2021 Term loan (5) 1/1/2024 300,000 300,000 LIBOR + 1.55% 3.46% 1/1/2022 Fannie Mae loan (5) 4/1/2025 102,400 102,400 LIBOR + 1.25% 2.84% 3/1/2020 Fannie Mae loans (5) 12/1/2025 115,000 115,000 LIBOR + 1.25% 2.76% 12/1/2020 Fannie Mae loans (5)(6) 6/1/2027 550,000 — LIBOR + 1.37% 3.51% 6/1/2022 Revolving credit facility (7) 8/21/2020 — — LIBOR + 1.40% N/A — Total Wholly Owned Subsidiary Debt 3,142,138 3,682,083 Consolidated JVs Term loan 7/21/2019 365,500 146,000 LIBOR + 1.55% N/A — Term loan (5) 2/28/2023 580,000 580,000 LIBOR + 1.40% 2.37% 3/1/2021 Total Consolidated Debt (8) 4,087,638 4,408,083 Deferred loan costs, net (38,810 ) (38,546 ) Total Consolidated Debt, net $ 4,048,828 $ 4,369,537 ___________________________________________________ Except as noted below, each loan (including our revolving credit facility) is non-recourse and secured by one or more separate collateral pools consisting of one or more properties, and requires monthly payments of interest only with the outstanding principal due upon maturity. (1) Maturity dates include the effect of extension options. (2) Includes the effect of interest rate swaps and excludes the effect of prepaid loan fees. See Note 9 for details of our interest rate swaps. (3) At September 30, 2017 , this loan had been paid off. (4) Require monthly payments of principal and interest. Principal amortization is based upon a 30 -year amortization schedule. (5) Loan agreement includes a zero-percent LIBOR floor. The corresponding swaps do not include such a floor. (6) Effective rate decreases to 3.16% on November 1, 2017 . (7) $400.0 million revolving credit facility. Unused commitment fees range from 0.15% to 0.20% . (8) See Note 12 for our fair value disclosures. Debt Statistics The following table summarizes (in thousands) our fixed and floating rate debt: Principal Balance as of September 30, 2017 Principal Balance as of December 31, 2016 Aggregate swapped to fixed rate loans $ 3,147,400 $ 2,985,480 Aggregate fixed rate loans 429,738 1,131,603 Aggregate floating rate loans 510,500 291,000 Total Debt $ 4,087,638 $ 4,408,083 The following table summarizes our fixed rate debt statistics: Fixed Rate Debt (fixed under the terms of the loan or a swap) Principal balance (in billions) $3.58 Weighted average remaining life (including extension options) 5.8 years Weighted average remaining fixed interest period 3.3 years Weighted average annual interest rate 3.08% Future Principal Payments At September 30, 2017 , the minimum future principal payments due on our secured notes payable and revolving credit facility, excluding the impact of any maturity extension options, were as follows (in thousands): Twelve months ending September 30: 2018 $ 8,294 2019 786,944 2020 325,000 2021 115,000 2022 640,000 Thereafter 2,212,400 Total future principal payments $ 4,087,638 Loan Costs Deferred loan costs are net of accumulated amortization of $15.9 million and $15.4 million at September 30, 2017 and December 31, 2016 , respectively. The table below presents (in thousands) our loan costs, which are included in Interest Expense in our consolidated statements of operations: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Loan costs expensed $ 163 $ — $ 539 $ 818 Deferred loan cost amortization 2,343 2,227 6,865 5,470 Total $ 2,506 $ 2,227 $ 7,404 $ 6,288

Interest Payable, Accounts Pa30

Interest Payable, Accounts Payable and Deferred Revenue (Tables)	9 Months Ended
	Sep. 30, 2017
Accounts Payable and Accrued Liabilities [Abstract]
Schedule of Interest Payable, Accounts Payable and Deferred Revenue	Interest payable, accounts payable and deferred revenue consisted of the following (in thousands): September 30, 2017 December 31, 2016 Interest payable $ 9,760 $ 9,561 Accounts payable and accrued liabilities 80,572 36,880 Deferred revenue 28,031 28,788 Total interest payable, accounts payable and deferred revenue $ 118,363 $ 75,229

Derivative Contracts (Tables)

Derivative Contracts (Tables)	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Other Derivatives	As of September 30, 2017 , all of our interest rate swaps, which include the interest rate swaps of our consolidated JVs and our unconsolidated Funds, were designated as cash flow hedges: Number of Interest Rate Swaps Notional (in thousands) Consolidated derivatives (1) 26 $ 3,147,400 Unconsolidated Funds' derivatives (2) 4 $ 510,000 ___________________________________________________ (1) The notional amount includes 100% , not our pro-rata share, of our consolidated JVs' derivatives. (2) The notional amount includes 100% , not our pro-rata share, of our unconsolidated Funds' derivatives.
Schedule of Derivative Liabilities at Fair Value	The fair value of our interest rate swaps in a liability position were as follows (in thousands): Fair value of derivatives in a liability position (1) September 30, 2017 December 31, 2016 Consolidated derivatives (2) $ 2,636 $ 7,689 Unconsolidated Funds' derivatives (3) $ — $ — __________________________________________________________________________________ (1) Includes accrued interest and excludes adjustments for credit risk. (2) Includes 100% , not our pro-rata share, of our consolidated JVs' derivatives. (3) Our unconsolidated Funds did not have any derivatives in a liability position.
Schedule of Derivative Assets at Fair Value	The fair value of our interest rate swaps in an asset position were as follows (in thousands): Fair value of derivatives in an asset position (1) September 30, 2017 December 31, 2016 Consolidated derivatives (2) $ 37,258 $ 35,144 Unconsolidated Funds' derivatives (3) $ 4,437 $ 3,724 ___________________________________________________ (1) Includes accrued interest and excludes adjustments for credit risk. (2) Includes 100% , not our pro-rata share, of our consolidated JVs' derivatives. (3) Includes 100% , not our pro-rata share, of our unconsolidated Funds' derivatives.
Effect of Derivative Instruments on Consolidated Statements of Operations	The table below presents (in thousands) the effect of derivative instruments on our AOCI and statements of operations: Nine Months Ended September 30, 2017 2016 Derivatives Designated as Cash Flow Hedges: Loss recorded in AOCI - consolidated derivatives (1)(5) $ (4,027 ) $ (37,927 ) Gain (loss) recorded in AOCI - unconsolidated Funds' derivatives (2)(5) $ 610 $ (814 ) Loss reclassified from AOCI - consolidated derivatives (3)(5) $ (10,353 ) $ (21,361 ) Loss reclassified from AOCI - unconsolidated Funds' derivatives (4)(5) $ (193 ) $ (311 ) Gain recorded - consolidated derivatives (6) $ 38 $ — Derivatives Not Designated as Cash Flow Hedges: Gain (loss) recorded as interest expense (7) $ — $ — ___________________________________________________ (1) Represents the effective portion of the change in fair value of interest rate swaps. (2) Represents our share of the effective portion of the change in fair value of our unconsolidated Funds' interest rate swaps. (3) Reclassified from AOCI as an increase to Interest expense. (4) Reclassified from AOCI as an increase (decrease) to Income, including depreciation, from unconsolidated real estate funds (our share). (5) See the reconciliation of our AOCI in Note 10 . (6) Represents the ineffective portion of the change in fair value of interest rate swaps, which is recorded as a decrease (increase) to interest expense. Our unconsolidated Funds did not have any ineffectiveness related to their interest rate swaps. (7) We and our unconsolidated Funds do not have any derivatives that are not designated as cash flow hedges.
Schedule of Future Reclassifications from AOCI	At September 30, 2017 , our estimate of the AOCI related to derivatives, designated as cash flow hedges, that will be reclassified to earnings during the next twelve months as swap interest payments are made, is presented in the table below (in thousands): Consolidated derivatives (1) $ (702 ) Unconsolidated Funds' derivatives (2) $ 772 ________________________________________ (1) Reclassified as an increase to Interest expense. (2) Reclassified as an increase to Income, including depreciation, from unconsolidated real estate funds (our share).

Equity (Tables)

Equity (Tables)	9 Months Ended
	Sep. 30, 2017
Stockholders' Equity Note [Abstract]
Condensed Consolidated Statements of Equity	The tables below present (in thousands) our condensed consolidated statements of equity: DEI Stockholders' Equity Noncontrolling Interests Total Equity Balance as of January 1, 2017 $ 1,921,143 $ 1,092,928 $ 3,014,071 Net income 64,907 7,534 72,441 Cash flow hedge fair value adjustments 7,383 (254 ) 7,129 Contributions to consolidated JVs — 284,248 284,248 Dividends and distributions (111,177 ) (28,682 ) (139,859 ) Exchange of OP units for common stock 13,261 (13,261 ) — Exercise of stock options (1) (52,867 ) — (52,867 ) Stock-based compensation — 8,642 8,642 Sale of common stock, net of offering costs 593,272 — 593,272 Balance as of September 30, 2017 $ 2,435,922 $ 1,351,155 $ 3,787,077 __________________________________________________ (1) Reflects withholding taxes. We issued shares of our common stock for the exercise of stock options on a net settlement basis (net of the exercise price and related taxes). DEI Stockholders' Equity Noncontrolling Interests Total Equity Balance as of January 1, 2016 $ 1,926,211 $ 355,337 $ 2,281,548 Net income 65,696 7,928 73,624 Cash flow hedge fair value adjustments (14,376 ) (2,693 ) (17,069 ) Contributions to consolidated JV — 459,750 459,750 Sale of equity interest in consolidated JV — 291,029 291,029 Dividends and distributions (98,501 ) (26,185 ) (124,686 ) Exchange of OP units for common stock 17,733 (17,733 ) — Repurchase of OP units (498 ) (328 ) (826 ) Exercise of stock options (1) (53,467 ) — (53,467 ) Stock-based compensation — 7,759 7,759 Sale of common stock, net of offering costs 49,379 — 49,379 Balance as of September 30, 2016 $ 1,892,177 $ 1,074,864 $ 2,967,041 __________________________________________________ (1) Reflects withholding taxes. We issued shares of our common stock for the exercise of stock options on a net settlement basis (net of the exercise price and related taxes).
Net Income Attributable to Common Stockholders and Transfers (to) from Noncontrolling Interests	The table below presents (in thousands) the effect on our equity from net income attributable to common stockholders and changes in our ownership interest in our Operating Partnership: Nine Months Ended September 30, 2017 2016 Net income attributable to common stockholders $ 64,907 $ 65,696 Transfers from noncontrolling interests: Exchange of OP Units with noncontrolling interests 13,261 17,733 Repurchase of OP Units from noncontrolling interests — (498 ) Net transfers from noncontrolling interests 13,261 17,235 Change from net income attributable to common stockholders and transfers from noncontrolling interests $ 78,168 $ 82,931
Schedule of Accumulated Other Comprehensive Income (Loss)	The table below presents (in thousands) a reconciliation of our AOCI, which consists solely of adjustments related to derivatives designated as cash flow hedges for the nine months ended September 30 : 2017 2016 Beginning balance $ 15,156 $ (9,285 ) Other comprehensive loss before reclassifications - our derivatives (4,027 ) (37,927 ) Other comprehensive income (loss) before reclassifications - our Funds' derivatives 610 (814 ) Reclassifications from AOCI - our derivatives (2) 10,353 21,361 Reclassifications from AOCI - our Funds' derivatives (3) 193 311 Net current period OCI 7,129 (17,069 ) OCI attributable to noncontrolling interests 254 2,693 OCI attributable to common stockholders 7,383 (14,376 ) Ending balance $ 22,539 $ (23,661 ) ___________________________________________________ (1) See Note 9 for the details of our derivatives and Note 12 for our derivative fair value disclosures. (2) Reclassification as an increase to Interest expense. (3) Reclassification as an (increase) decrease to Income, including depreciation, from unconsolidated real estate funds.

EPS (Tables)

EPS (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The table below presents the calculation of basic and diluted EPS: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Numerator (in thousands): Net income attributable to common stockholders $ 25,614 $ 31,848 $ 64,907 $ 65,696 Allocation to participating securities: Unvested LTIP Units (158 ) (180 ) (345 ) (365 ) Numerator for basic and diluted net income attributable to common stock holders $ 25,456 $ 31,668 $ 64,562 $ 65,331 Denominator (in thousands): Weighted average shares of common stock outstanding - basic 165,471 150,753 158,000 148,578 Effect of dilutive securities: Stock options (1) 49 2,666 419 4,241 Weighted average shares of common stock and common stock equivalents outstanding - diluted 165,520 153,419 158,419 152,819 Basic EPS: Net income attributable to common stockholders per share $ 0.154 $ 0.210 $ 0.409 $ 0.440 Diluted EPS: Net income attributable to common stockholders per share $ 0.154 $ 0.206 $ 0.408 $ 0.428 ____________________________________________________ (1) The following securities (in thousands) were excluded from the computation of the weighted average shares of common stock and common stock equivalents outstanding - diluted because the effect of including them would be anti-dilutive to the calculation of diluted EPS: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 OP Units 24,790 24,788 24,750 25,148 Vested LTIP Units 8 675 358 766

Fair Value of Financial Instr34

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of Estimated Fair Value of Secured Notes Payable	The table below presents (in thousands) the estimated fair value of our secured notes payable: Secured Notes Payable: September 30, 2017 December 31, 2016 Fair value $ 4,080,901 $ 4,429,224 Carrying value $ 4,087,638 $ 4,408,083
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The table below presents (in thousands) the estimated fair value of our derivatives: September 30, 2017 December 31, 2016 Derivative Assets: Fair value - consolidated derivatives (1) $ 37,115 $ 35,656 Fair value - unconsolidated Funds' derivatives (2) $ 4,632 $ 3,605 Derivative Liabilities: Fair value - consolidated derivatives (1) $ 2,002 $ 6,830 Fair value - unconsolidated Funds' derivatives (2) $ — $ — ____________________________________________________ (1) Consolidated derivatives, which include 100% , not our pro-rata share, of our consolidated JVs' derivatives, are included in interest rate contracts in our consolidated balance sheet. The fair value excludes accrued interest which is included in interest payable in the consolidated balance sheet. (2) Represents 100% , not our pro-rata share, of our unconsolidated Funds' derivatives. Our pro-rata share of the amounts related to the unconsolidated Funds' derivatives is included in our Investment in unconsolidated real estate funds in our consolidated balance sheet. See Note 5 for more information regarding our unconsolidated Funds.

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Summary of Operating Activity of Reportable Segments	The table below presents (in thousands) the operating activity of our reportable segments: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Office Segment Total office revenues $ 184,618 $ 167,608 $ 530,508 $ 475,083 Office expenses (62,468 ) (56,926 ) (175,240 ) (158,190 ) Office segment profit 122,150 110,682 355,268 316,893 Multifamily Segment Total multifamily revenues 24,131 24,513 72,354 72,825 Multifamily expenses (6,041 ) (5,950 ) (17,866 ) (17,322 ) Multifamily segment profit 18,090 18,563 54,488 55,503 Total profit from all segments $ 140,240 $ 129,245 $ 409,756 $ 372,396
Reconciliation of Segment Profit to Net Income Attributable to Common Stockholders	The table below (in thousands) is a reconciliation of the total profit from all segments to net income attributable to common stockholders: Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 Total profit from all segments $ 140,240 $ 129,245 $ 409,756 $ 372,396 General and administrative (8,441 ) (8,099 ) (27,189 ) (25,573 ) Depreciation and amortization (69,974 ) (63,827 ) (206,141 ) (181,947 ) Other income 2,659 2,295 7,152 6,527 Other expenses (1,659 ) (2,916 ) (5,156 ) (7,828 ) Income, including depreciation, from unconsolidated real estate funds 1,137 2,334 4,427 5,564 Interest expense (35,454 ) (36,479 ) (110,408 ) (109,842 ) Income before gains 28,508 22,553 72,441 59,297 Gains on sales of investments in real estate — 13,245 — 14,327 Net income 28,508 35,798 72,441 73,624 Less: Net income attributable to noncontrolling interests (2,894 ) (3,950 ) (7,534 ) (7,928 ) Net income attributable to common stockholders $ 25,614 $ 31,848 $ 64,907 $ 65,696

Future Minimum Lease Rental R36

Future Minimum Lease Rental Receipts (Tables)	9 Months Ended
	Sep. 30, 2017
Operating Leases, Future Minimum Payments Receivable [Abstract]
Schedule of Future Minimum Base Rentals on Non-Cancelable Office and Ground Operating Leases	The table below presents (in thousands) the future minimum base rentals on our non-cancelable office tenant and ground leases at September 30, 2017 : Twelve months ending September 30: 2018 $ 528,867 2019 477,732 2020 416,289 2021 333,742 2022 251,975 Thereafter 657,646 Total future minimum base rentals (1) $ 2,666,251 _____________________________________________________ (1) Does not include (i) residential leases, which typically have a term of one year or less, (ii) holdover rent, (iii) other types of rent such as storage rent and antenna rent, (iv) tenant reimbursements, (v) straight line rent, (vi) amortization/accretion of acquired above/below-market lease intangibles and (vii) percentage rents. The amounts assume that early termination options held by tenants are not exercised.

Future Minimum Lease Rental P37

Future Minimum Lease Rental Payments (Tables)	9 Months Ended
	Sep. 30, 2017
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Schedule of Future Minimum Ground Lease Payments	The table below (in thousands) presents the future minimum ground lease payments as of September 30, 2017 : Twelve months ending September 30: 2018 $ 733 2019 733 2020 733 2021 733 2022 733 Thereafter 47,094 Total future minimum lease payments (1) $ 50,759 ___________________________________________________ (1) Lease term ends on December 31, 2086 . Ground rent is fixed at $733 thousand per year until February 28, 2019 , and will then reset to the greater of the existing ground rent or market. The table above assumes that the rental payments will continue to be $733 thousand per year after February 28, 2019 .

Commitments, Contingencies an38

Commitments, Contingencies and Guarantees (Tables)	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule of Debt Related to Unconsolidated Funds	The table below summarizes our Funds' debt as of September 30, 2017 . The amounts represent 100% (not our pro-rata share) of amounts related to our Funds: Fund (1) Loan Maturity Date Principal Balance (in millions) Variable Interest Rate Swap Fixed Interest Rate Swap Maturity Date Partnership X (2)(4) 3/1/2023 $ 110.0 LIBOR + 1.40% 2.30% 3/1/2021 Fund X (3)(4)(5) 7/1/2024 400.0 LIBOR + 1.65% 3.44% 7/1/2022 $ 510.0 ___________________________________________________ (1) See Note 5 for more information regarding our unconsolidated Funds. (2) Floating rate term loan, swapped to fixed, which is secured by two properties and requires monthly payments of interest only, with the outstanding principal due upon maturity. As of September 30, 2017 , assuming a zero-percent LIBOR interest rate during the remaining life of the swap, the maximum future payments under the swap agreement were $3.4 million . (3) Floating rate term loan, swapped to fixed, which is secured by six properties and requires monthly payments of interest only, with the outstanding principal due upon maturity. As of September 30, 2017 , assuming a zero-percent LIBOR interest rate during the remaining life of the swap, the maximum future payments under the swap agreement were $34.5 million . (4) Loan agreement includes a zero-percent LIBOR floor. The corresponding swaps do not include such a floor. (5) Loan agreement includes the requirement to purchase an interest rate cap if one month LIBOR equals or exceeds 3.56% for fourteen consecutive days after the related swap matures.

Overview - Narrative (Details)

Overview - Narrative (Details) $ in Millions	Sep. 30, 2017USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable interest entity, assets	$ 8,110
Variable interest entity, assets related to real estate held for investment	7,680
Variable interest entity, liabilities	4,330
Variable interest entity, equity	3,790
Variable interest entity, equity, portion attributable to noncontrolling interest	$ 1,350

Overview - Schedule of Properti

Overview - Schedule of Properties Portfolio (Details)	Sep. 30, 2017land_parceloffice_property
Real Estate Properties [Line Items]
Number of office properties owned	70
Total properties	80
Wholly Owned Properties [Member]
Real Estate Properties [Line Items]
Number of office properties owned	52
Number of multifamily properties owned	10
Number of land parcels not included in portfolio | land_parcel	2
Consolidated JV Properties [Member]
Real Estate Properties [Line Items]
Number of office properties owned	10
Unconsolidated Fund Properties [Member]
Real Estate Properties [Line Items]
Number of office properties owned	8
Reportable Legal Entities [Member]
Real Estate Properties [Line Items]
Number of office properties owned	62
Total properties	72
Reportable Legal Entities [Member] | Wholly Owned Properties [Member]
Real Estate Properties [Line Items]
Number of office properties owned	52
Number of multifamily properties owned	10
Reportable Legal Entities [Member] | Consolidated JV Properties [Member]
Real Estate Properties [Line Items]
Number of office properties owned	10
Reportable Legal Entities [Member] | Unconsolidated Fund Properties [Member]
Real Estate Properties [Line Items]
Number of office properties owned	0

Summary of Significant Accoun41

Summary of Significant Accounting Policies - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2016USD ($)
Accounting Policies [Abstract]
Acquisition-related expenses	$ 2.9

Investment in Real Estate - Nar

Investment in Real Estate - Narrative (Details) $ in Millions	Jul. 20, 2017USD ($)	Apr. 25, 2017USD ($)property	Feb. 29, 2016USD ($)property	Sep. 30, 2017office_property	Sep. 30, 2016property	Jul. 21, 2016	May 31, 2016
Real Estate Acquisition [Line Items]
Number of office properties | office_property				80
Consolidated JV [Member]
Real Estate Acquisition [Line Items]
Percentage of equity contributed in joint venture					20.00%	55.00%
Consolidated JV [Member] | Office Building [Member]
Real Estate Acquisition [Line Items]
Number of office properties | property					2
Consolidated JV [Member] | Santa Monica Properties [Member]
Real Estate Acquisition [Line Items]
Contract price | $		$ 352.8
Consolidated JV [Member] | Santa Monica Properties [Member] | Office Building [Member]
Real Estate Acquisition [Line Items]
Number of office properties | property		2
Consolidated JV [Member] | Beverly Hills Property [Member]
Real Estate Acquisition [Line Items]
Contract price | $	$ 177
Consolidated JV [Member] | Westwood Portfolio [Member]
Real Estate Acquisition [Line Items]
Contract price | $			$ 1,340
Percentage of equity contributed in joint venture			60.00%		30.00%		30.00%
Consolidated JV [Member] | Westwood Portfolio [Member] | Office Building [Member]
Real Estate Acquisition [Line Items]
Number of office properties | property			4

Investment in Real Estate - Sum

Investment in Real Estate - Summary of Preliminary Purchase Accounting and Funding Sources for Acquisitions (Details) ft² in Thousands, $ in Thousands	Sep. 27, 2016USD ($)	May 31, 2016USD ($)	Feb. 29, 2016USD ($)ft²	Sep. 30, 2016USD ($)ft²	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)ft²	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)ft²	Jul. 20, 2017USD ($)ft²	Apr. 25, 2017USD ($)ft²	Dec. 31, 2016USD ($)	Jul. 21, 2016
Source of funds:
Credit facility					$ 4,087,638		$ 4,087,638				$ 4,408,083
Long-term debt					4,048,828		4,048,828				4,369,537
Proceeds from sale of interest in joint venture				$ 51,600
Gain on sale of investment in real estate					0	$ 13,245	0	$ 14,327
Line of Credit [Member] | Revolving Credit Facility With Maturity Date of August 21, 2020 [Member] | LIBOR [Member]
Source of funds:
Basis spread			1.40%
Secured Debt [Member] | Term Loan With Maturity Date of February 28, 2023 [Member]
Source of funds:
Credit facility			$ 580,000
Loan costs			$ 11,200
Percentage of loan			100.00%
Debt instrument, term			7 years
Fixed interest rate			2.37%
Fixed interest rate, term			5 years
Secured Debt [Member] | Term Loan With Maturity Date of February 28, 2023 [Member] | LIBOR [Member]
Source of funds:
Basis spread			1.40%
Consolidated JV [Member]
Source of funds:
Percentage of equity contributed in joint venture				20.00%		20.00%		20.00%				55.00%
Percentage of joint venture sold				35.00%		35.00%		35.00%
Gain on sale of investment in real estate	$ 587
Consolidated JV [Member] | Secured Debt [Member] | Term Loan With Maturity Date of February 28, 2023 [Member]
Source of funds:
Credit facility					$ 580,000		$ 580,000				$ 580,000
Variable Interest Rate							LIBOR + 1.40%
Fixed interest rate					2.37%		2.37%
Consolidated JV [Member] | Secured Debt [Member] | Term Loan With Maturity Date of February 28, 2023 [Member] | LIBOR [Member]
Source of funds:
Basis spread							1.40%
1299 Ocean [Member] | Consolidated JV [Member]
Real Estate Acquisition [Line Items]
Building square footage | ft²										206
Uses of funds - Investment in real estate:
Land										$ 22,748
Buildings and improvements										260,188
Tenant improvements and lease intangibles										5,010
Acquired above and below-market leases, net(3)										(10,683)
Net assets and liabilities acquired										$ 277,263
429 Santa Monica [Member] | Consolidated JV [Member]
Real Estate Acquisition [Line Items]
Building square footage | ft²										87
Uses of funds - Investment in real estate:
Land										$ 4,949
Buildings and improvements										69,286
Tenant improvements and lease intangibles										3,248
Acquired above and below-market leases, net(3)										(723)
Net assets and liabilities acquired										$ 76,760
9665 Wilshire [Member] | Consolidated JV [Member]
Real Estate Acquisition [Line Items]
Building square footage | ft²									171
Uses of funds - Investment in real estate:
Land									$ 5,568
Buildings and improvements									175,960
Tenant improvements and lease intangibles									1,112
Acquired above and below-market leases, net(3)									(4,339)
Net assets and liabilities acquired									$ 178,301
Westwood Portfolio [Member]
Source of funds:
Proceeds from sale of interest in joint venture		$ 240,000
Additional proceeds for compensation of costs		1,100
Gain on sale of investment in real estate		$ 1,100
Weighted average useful live of above and below market leases			4 years 5 months
Deposits in escrow			$ 75,000
Cash paid at closing			$ 67,500
Westwood Portfolio [Member] | Consolidated JV [Member]
Real Estate Acquisition [Line Items]
Building square footage | ft²			1,725
Uses of funds - Investment in real estate:
Land			$ 94,996
Buildings and improvements			1,236,786
Tenant improvements and lease intangibles			50,439
Acquired above and below-market leases, net(3)			(49,708)
Net assets and liabilities acquired			1,332,513
Source of funds:
Cash on hand			153,745
Noncontrolling interests			320,000
Total source of funds			$ 1,332,513
Percentage of equity contributed in joint venture		30.00%	60.00%	30.00%		30.00%		30.00%
Percentage of joint venture sold		30.00%
Westwood Portfolio [Member] | Consolidated JV [Member] | Line of Credit [Member]
Source of funds:
Credit facility			$ 290,000
Westwood Portfolio [Member] | Consolidated JV [Member] | Secured Debt [Member]
Source of funds:
Long-term debt			$ 568,768
Westwood Portfolio [Member] | Consolidated JV [Member] | Pro Forma Sell Down Adjustment [Member]
Source of funds:
Noncontrolling interests		$ 240,000
Westwood Portfolio [Member] | Consolidated JV [Member] | Pro Forma Sell Down Adjustment [Member] | Line of Credit [Member]
Source of funds:
Credit facility		$ (240,000)
Westwood Portfolio [Member] | Consolidated JV [Member] | Pro Forma [Member]
Real Estate Acquisition [Line Items]
Building square footage | ft²				1,725		1,725		1,725
Uses of funds - Investment in real estate:
Land				$ 94,996		$ 94,996		$ 94,996
Buildings and improvements				1,236,786		1,236,786		1,236,786
Tenant improvements and lease intangibles				50,439		50,439		50,439
Acquired above and below-market leases, net(3)				(49,708)		(49,708)		(49,708)
Net assets and liabilities acquired				1,332,513		1,332,513		1,332,513
Source of funds:
Cash on hand								153,745
Noncontrolling interests								560,000
Total source of funds								1,332,513
Westwood Portfolio [Member] | Consolidated JV [Member] | Pro Forma [Member] | Line of Credit [Member]
Source of funds:
Credit facility				50,000		50,000		50,000
Westwood Portfolio [Member] | Consolidated JV [Member] | Pro Forma [Member] | Secured Debt [Member]
Source of funds:
Long-term debt				$ 568,768		$ 568,768		$ 568,768

Investment in Real Estate - Rev

Investment in Real Estate - Revenue and Net Income Attributable to Common Stockholders from Westwood Portfolio (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Real Estate Acquisition [Line Items]
Total office revenues	$ 184,618	$ 167,608	$ 530,508	$ 475,083
Net income attributable to common stockholders(1)	$ 25,614	$ 31,848	64,907	65,696
Westwood Portfolio [Member]
Real Estate Acquisition [Line Items]
Total office revenues			71,530	56,045
Net income attributable to common stockholders(1)			4,449	1,444
Net income attributable to common stockholders excluding transaction costs			$ 4,400	$ 3,500

Investment in Real Estate - Pro

Investment in Real Estate - Pro Forma Results (Details) - Westwood Portfolio [Member] $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2016USD ($)$ / shares
Real Estate Acquisition [Line Items]
Pro forma revenues | $	$ 561,235
Pro forma net income attributable to common stockholders | $	$ 64,623
Pro forma net income attributable to common stockholders per share – basic (usd per share) | $ / shares	$ 0.433
Pro forma net income attributable to common stockholders per share – diluted (usd per share) | $ / shares	$ 0.421

Investment in Real Estate - Oth

Investment in Real Estate - Other 2016 Acquisitions (Details) - Consolidated JV [Member] ft² in Thousands, $ in Thousands	Sep. 27, 2016USD ($)ft²	Jul. 21, 2016USD ($)ft²
233 Wilshire Boulevard [Member]
Real Estate Acquisition [Line Items]
Building square footage | ft²	129
Land	$ 9,263
Buildings and improvements	126,938
Tenant improvements and lease intangibles	3,488
Acquired above and below-market leases, net	(1,838)
Net assets and liabilities acquired	$ 137,851
12100 Wilshire Boulevard [Member]
Real Estate Acquisition [Line Items]
Building square footage | ft²		365
Land		$ 20,164
Buildings and improvements		199,698
Tenant improvements and lease intangibles		9,057
Acquired above and below-market leases, net		(4,523)
Net assets and liabilities acquired		$ 224,396

Investment in Real Estate - O47

Investment in Real Estate - Other 2016 Acquisitions and Dispositions Narrative (Details) ft² in Thousands, $ in Thousands	Sep. 30, 2016USD ($)ft²property	Sep. 27, 2016USD ($)ft²	Jul. 21, 2016USD ($)ft²	Sep. 30, 2016USD ($)ft²property	Sep. 30, 2017USD ($)office_property	Sep. 30, 2016USD ($)ft²property	Sep. 30, 2017USD ($)office_property	Sep. 30, 2016USD ($)ft²property
Real Estate Acquisition [Line Items]
Number of office properties | office_property					80		80
Proceeds from sale of interest in joint venture				$ 51,600
Proceeds from sale of interest in real estate held for investment, compensation				$ 194
Gain on sale of investment in real estate					$ 0	$ 13,245	$ 0	$ 14,327
Sherman Oaks [Member] | Office Building [Member]
Real Estate Acquisition [Line Items]
Gain on sale of investment in real estate						$ 12,700
Building square footage | ft²	168			168		168		168
Real estate held-for-sale, carrying value	$ 42,800			$ 42,800		$ 42,800		$ 42,800
Sale of real estate						56,700
Sale of real estate, transaction costs						$ 1,200
Investor [Member]
Real Estate Acquisition [Line Items]
Joint venture, contributions received				$ 139,800
Investors ownership percentage in joint venture	80.00%
Consolidated JV [Member]
Real Estate Acquisition [Line Items]
Percentage of equity contributed in joint venture	20.00%		55.00%	20.00%		20.00%		20.00%
Percentage of joint venture sold	35.00%			35.00%		35.00%		35.00%
Gain on sale of investment in real estate		$ 587
Consolidated JV [Member] | Office Building [Member]
Real Estate Acquisition [Line Items]
Number of office properties | property	2			2		2		2
Consolidated JV [Member] | Secured Debt [Member] | Term Loan With Maturity Date of July 21, 2019 [Member]
Real Estate Acquisition [Line Items]
Proceeds from non-recourse loan								$ 146,000
Debt instrument, term							3 years
Variable interest rate							LIBOR + 1.55%
Consolidated JV [Member] | Secured Debt [Member] | Term Loan With Maturity Date of July 21, 2019 [Member] | LIBOR [Member]
Real Estate Acquisition [Line Items]
Basis spread							1.55%	1.55%
12100 Wilshire Boulevard [Member] | Consolidated JV [Member]
Real Estate Acquisition [Line Items]
Contract price			$ 225,000
Building square footage | ft²			365
233 Wilshire Boulevard [Member] | Consolidated JV [Member]
Real Estate Acquisition [Line Items]
Contract price		$ 139,500
Building square footage | ft²		129

Acquired Lease Intangibles - Su

Acquired Lease Intangibles - Summary of Acquired Lease Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired lease intangible assets, net	$ 4,616		$ 4,616		$ 5,147
Acquired lease intangible liabilities, net	69,114		69,114		67,191
Amortization/accretion of above/below-market leases	4,814	$ 5,102	13,290	$ 13,415
Above Market Tenant Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Off-market lease, assets	5,461		5,461		5,110
Accumulated amortization	(3,203)		(3,203)		(2,379)
Below Market Ground Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Off-market lease, assets	3,198		3,198		3,198
Accumulated amortization	(840)		(840)		(782)
Below Market Tenant Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Off-market lease, liabilities	117,077		117,077		104,925
Accumulated accretion	(51,433)		(51,433)		(41,241)
Tenant Lease [Member] | Operating Lease Revenue [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization/accretion of above/below-market leases	4,805	5,093	13,265	13,390
Above Market Ground Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Off-market lease, liabilities	4,017		4,017		16,200
Accumulated accretion	(547)		(547)		$ (12,693)
Above Market Ground Leases [Member] | Office Parking and Other Income [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization/accretion of above/below-market leases	(4)	(4)	(13)	(13)
Above Market Ground Leases [Member] | Office Expense [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization/accretion of above/below-market leases	$ 13	$ 13	$ 38	$ 38

Investments in Unconsolidated49

Investments in Unconsolidated Real Estate Funds - Narrative (Details) ft² in Millions	3 Months Ended	9 Months Ended
	Jun. 30, 2017	Sep. 30, 2017ft²office_propertyNumber_of_funds_managed
Schedule of Equity Method Investments [Line Items]
Number of office properties		80
Percentage of amounts related to the Fund		100.00%
Opportunity Fund [Member]
Schedule of Equity Method Investments [Line Items]
Purchase of equity interest, percent	3.70%
Equity interest of the Fund, percent		3.70%
Fund X [Member]
Schedule of Equity Method Investments [Line Items]
Equity interest of the Fund, percent		69.10%
Fund X Indirect [Member]
Schedule of Equity Method Investments [Line Items]
Equity interest of the Fund, percent		13.10%
Partnership X [Member]
Schedule of Equity Method Investments [Line Items]
Equity interest of the Fund, percent		24.30%
Unconsolidated Properties [Member]
Schedule of Equity Method Investments [Line Items]
Number of real estate funds owned and managed | Number_of_funds_managed		3
Number of office properties		8
Building square footage | ft²		1.8

Investments in Unconsolidated50

Investments in Unconsolidated Real Estate Funds - Summary of Cash Distributions Received from Funds (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Real Estate Investments, Net [Abstract]
Operating distributions received	$ 4,427	$ 1,356
Capital distributions received	41,965	21,973
Total distributions received	$ 46,392	$ 23,329

Investments in Unconsolidated51

Investments in Unconsolidated Real Estate Funds - Summary of Statement of Financial Position for Investments in Unconsolidated Real Estate Funds (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Real Estate Investments, Net [Abstract]
Total assets	$ 703,776	$ 690,028
Total liabilities	524,968	448,544
Total equity	$ 178,808	$ 241,484

Investments in Unconsolidated52

Investments in Unconsolidated Real Estate Funds - Summary of Statement of Operations for Investments in Unconsolidated Real Estate Funds (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Real Estate Investments, Net [Abstract]
Total revenues	$ 56,550	$ 54,104
Operating income	14,918	14,235
Net income	$ 3,974	$ 6,539

Other Assets - Summary of Other

Other Assets - Summary of Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Other Assets [Abstract]
Restricted cash	$ 121	$ 121
Prepaid expenses	11,481	6,779
Other indefinite-lived intangible	1,988	1,988
Furniture, fixtures and equipment, net	1,078	1,093
Other	2,610	1,933
Total other assets	$ 17,278	$ 11,914

Secured Notes Payable and Rev54

Secured Notes Payable and Revolving Credit Facility, Net - Schedule of Secured Notes Payable and Revolving Credit Facility (Details) - USD ($)	Feb. 29, 2016	Sep. 30, 2017	Sep. 30, 2016	Nov. 01, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Principal Balance		$ 4,087,638,000			$ 4,408,083,000
Deferred loan costs, net		(38,810,000)			(38,546,000)
Total Debt, Net		4,048,828,000			4,369,537,000
Revolving Credit Facility With Maturity Date of August 21, 2020 [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 400,000,000
Revolving Credit Facility With Maturity Date of August 21, 2020 [Member] | Minimum [Member]
Debt Instrument [Line Items]
Unused commitment fees (as a percent)		0.15%
Revolving Credit Facility With Maturity Date of August 21, 2020 [Member] | Maximum [Member]
Debt Instrument [Line Items]
Unused commitment fees (as a percent)		0.20%
Secured Debt [Member] | LIBOR [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread		0.00%
Secured Debt [Member] | Term Loans With Effective Annual Fixed Interest Rate At 4.00% And 3.85% [Member]
Debt Instrument [Line Items]
Fixed rate debt amortization period		30 years
Secured Debt [Member] | Term Loan With Maturity Date of February 28, 2023 [Member]
Debt Instrument [Line Items]
Principal Balance	$ 580,000,000
Fixed interest rate	2.37%
Secured Debt [Member] | Term Loan With Maturity Date of February 28, 2023 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread	1.40%
Line of Credit [Member] | Revolving Credit Facility With Maturity Date of August 21, 2020 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread	1.40%
Wholly Owned Subsidiaries [Member]
Debt Instrument [Line Items]
Principal Balance		$ 3,142,138,000			3,682,083,000
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 3.00% [Member]
Debt Instrument [Line Items]
Principal Balance		0			1,000,000
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 4.14% [Member]
Debt Instrument [Line Items]
Principal Balance		0			349,933,000
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Fannie Mae Loans With Maturity Date of November 1, 2020 [Member]
Debt Instrument [Line Items]
Principal Balance		0			388,080,000
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 4.46% [Member]
Debt Instrument [Line Items]
Principal Balance		$ 0			345,759,000
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 4.00% [Member]
Debt Instrument [Line Items]
Maturity Date		Feb. 1, 2019
Principal Balance		$ 147,719,000			149,911,000
Fixed interest rate		4.00%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 3.85% [Member]
Debt Instrument [Line Items]
Maturity Date		Jun. 5, 2019
Principal Balance		$ 282,019,000			285,000,000
Fixed interest rate		3.85%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Fannie Mae Loan With Maturity Date of October 1, 2019 [Member]
Debt Instrument [Line Items]
Maturity Date		Oct. 1, 2019
Principal Balance		$ 145,000,000			145,000,000
Variable Interest Rate		LIBOR + 1.25%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Fannie Mae Loan With Maturity Date of October 1, 2019 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.25%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 2.77% [Member]
Debt Instrument [Line Items]
Maturity Date		Apr. 15, 2022
Principal Balance		$ 340,000,000			340,000,000
Variable Interest Rate		LIBOR + 1.40%
Fixed interest rate		2.77%
Swap Maturity Date		Apr. 1, 2020
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 2.77% [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.40%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 3.06% [Member]
Debt Instrument [Line Items]
Maturity Date		Jul. 27, 2022
Principal Balance		$ 180,000,000			180,000,000
Variable Interest Rate		LIBOR + 1.45%
Fixed interest rate		3.06%
Swap Maturity Date		Jul. 1, 2020
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 3.06% [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.45%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 2.64% [Member]
Debt Instrument [Line Items]
Maturity Date		Nov. 1, 2022
Principal Balance		$ 400,000,000			400,000,000
Variable Interest Rate		LIBOR + 1.35%
Fixed interest rate		2.64%
Swap Maturity Date		Nov. 1, 2020
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 2.64% [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.35%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 2.57% [Member]
Debt Instrument [Line Items]
Maturity Date		Jun. 23, 2023
Principal Balance		$ 360,000,000			360,000,000
Variable Interest Rate		LIBOR + 1.55%
Fixed interest rate		2.57%
Swap Maturity Date		Jul. 1, 2021
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 2.57% [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.55%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 3.62% [Member]
Debt Instrument [Line Items]
Maturity Date		Dec. 23, 2023
Principal Balance		$ 220,000,000			220,000,000
Variable Interest Rate		LIBOR + 1.70%
Fixed interest rate		3.62%
Swap Maturity Date		Dec. 23, 2021
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 3.62% [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.70%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 3.46% [Member]
Debt Instrument [Line Items]
Maturity Date		Jan. 1, 2024
Principal Balance		$ 300,000,000			300,000,000
Variable Interest Rate		LIBOR + 1.55%
Fixed interest rate		3.46%
Swap Maturity Date		Jan. 1, 2022
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Term Loan With Effective Annual Fixed Interest Rate At 3.46% [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.55%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Fannie Mae Loan With Maturity Date of April 1, 2025 [Member]
Debt Instrument [Line Items]
Maturity Date		Apr. 1, 2025
Principal Balance		$ 102,400,000			102,400,000
Variable Interest Rate		LIBOR + 1.25%
Fixed interest rate		2.84%
Swap Maturity Date		Mar. 1, 2020
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Fannie Mae Loan With Maturity Date of April 1, 2025 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.25%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Fannie Mae Loans With Maturity Date of December 1, 2025 [Member]
Debt Instrument [Line Items]
Maturity Date		Dec. 1, 2025
Principal Balance		$ 115,000,000			115,000,000
Variable Interest Rate		LIBOR + 1.25%
Fixed interest rate		2.76%
Swap Maturity Date		Dec. 1, 2020
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Fannie Mae Loans With Maturity Date of December 1, 2025 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.25%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Fannie Mae Loans With Maturity Date of June 1, 2027 [Member]
Debt Instrument [Line Items]
Maturity Date		Jun. 1, 2027
Principal Balance		$ 550,000,000			0
Variable Interest Rate		LIBOR + 1.37%
Fixed interest rate		3.51%
Swap Maturity Date		Jun. 1, 2022
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Fannie Mae Loans With Maturity Date of June 1, 2027 [Member] | Forecast [Member]
Debt Instrument [Line Items]
Fixed interest rate				3.16%
Wholly Owned Subsidiaries [Member] | Secured Debt [Member] | Fannie Mae Loans With Maturity Date of June 1, 2027 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.37%
Wholly Owned Subsidiaries [Member] | Line of Credit [Member] | Revolving Credit Facility With Maturity Date of August 21, 2020 [Member]
Debt Instrument [Line Items]
Maturity Date		Aug. 21, 2020
Principal Balance		$ 0			0
Variable Interest Rate		LIBOR + 1.40%
Wholly Owned Subsidiaries [Member] | Line of Credit [Member] | Revolving Credit Facility With Maturity Date of August 21, 2020 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.40%
Consolidated JV [Member] | Secured Debt [Member] | Term Loan With Maturity Date of July 21, 2019 [Member]
Debt Instrument [Line Items]
Maturity Date		Jul. 21, 2019
Principal Balance		$ 365,500,000			146,000,000
Variable Interest Rate		LIBOR + 1.55%
Consolidated JV [Member] | Secured Debt [Member] | Term Loan With Maturity Date of July 21, 2019 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.55%	1.55%
Consolidated JV [Member] | Secured Debt [Member] | Term Loan With Maturity Date of February 28, 2023 [Member]
Debt Instrument [Line Items]
Maturity Date		Feb. 28, 2023
Principal Balance		$ 580,000,000			$ 580,000,000
Variable Interest Rate		LIBOR + 1.40%
Fixed interest rate		2.37%
Swap Maturity Date		Mar. 1, 2021
Consolidated JV [Member] | Secured Debt [Member] | Term Loan With Maturity Date of February 28, 2023 [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Basis spread		1.40%

Secured Notes Payable and Rev55

Secured Notes Payable and Revolving Credit Facility, Net - Schedule of Debt Statistics (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Principal balance of consolidated fixed rate debt	$ 3,580,000
Weighted average remaining life (including extension options) of consolidated fixed rate debt (in years)	5 years 10 months
Weighted average remaining fixed interest period of consolidated fixed rate debt (in years)	3 years 4 months
Weighted average annual interest rate of consolidated fixed rate debt (as a percent)	3.08%
Debt Instrument [Line Items]
Principal Balance	$ 4,087,638	$ 4,408,083
Aggregate Swapped to Fixed Rate Loans [Member]
Debt Instrument [Line Items]
Principal Balance	3,147,400	2,985,480
Aggregate Fixed Rate Loans [Member]
Debt Instrument [Line Items]
Principal Balance	429,738	1,131,603
Aggregate Floating Rate Loans [Member]
Debt Instrument [Line Items]
Principal Balance	$ 510,500	$ 291,000

Secured Notes Payable and Rev56

Secured Notes Payable and Revolving Credit Facility, Net - Schedule of Minimum Future Principal Payments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
2,018	$ 8,294
2,019	786,944
2,020	325,000
2,021	115,000
2,022	640,000
Thereafter	2,212,400
Total future principal payments	$ 4,087,638	$ 4,408,083

Secured Notes Payable and Rev57

Secured Notes Payable and Revolving Credit Facility, Net - Schedule of Loan Costs and Accumulated Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Debt Disclosure [Abstract]
Accumulated amortization on deferred loan costs	$ 15,900		$ 15,900		$ 15,400
Loan Costs Included In Interest Expense
Deferred loan cost amortization			6,865	$ 5,470
Interest Expense [Member]
Loan Costs Included In Interest Expense
Loan costs expensed	163	$ 0	539	818
Deferred loan cost amortization	2,343	2,227	6,865	5,470
Total	$ 2,506	$ 2,227	$ 7,404	$ 6,288

Interest Payable, Accounts Pa58

Interest Payable, Accounts Payable and Deferred Revenue - Summary of Balances (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accounts Payable and Accrued Liabilities [Abstract]
Interest payable	$ 9,760	$ 9,561
Accounts payable and accrued liabilities	80,572	36,880
Deferred revenue	28,031	28,788
Total interest payable, accounts payable and deferred revenue	$ 118,363	$ 75,229

Derivative Contracts - Summary

Derivative Contracts - Summary of Derivatives (Details) - Interest Rate Swap [Member] - Derivatives Designated as Cash Flow Hedges [Member] - Cash Flow Hedging [Member] $ in Thousands	Sep. 30, 2017USD ($)instrument
Derivative [Line Items]
Number of Interest Rate Swaps | instrument	26
Notional | $	$ 3,147,400
Percent of notional amount related to the Fund	100.00%
Unconsolidated Funds [Member]
Derivative [Line Items]
Number of Interest Rate Swaps | instrument	4
Notional | $	$ 510,000
Percent of notional amount related to the Fund	100.00%

Derivative Contracts - Credit-r

Derivative Contracts - Credit-risk-related Contingent Features (Details) - Interest Rate Swap [Member] - Derivatives Designated as Cash Flow Hedges [Member] - Cash Flow Hedging [Member] - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Fair value derivatives in a liability position	$ 2,636	$ 7,689
Percent of notional amount related to the Fund	100.00%
Unconsolidated Funds [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Fair value derivatives in a liability position	$ 0	$ 0
Percent of notional amount related to the Fund	100.00%

Derivative Contracts - Counterp

Derivative Contracts - Counterparty Credit Risk (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivatives in an asset position	$ 37,115	$ 35,656
Interest Rate Swap [Member] | Derivatives Designated as Cash Flow Hedges [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivatives in an asset position	$ 37,258	35,144
Percent of notional amount related to the Fund	100.00%
Interest Rate Swap [Member] | Derivatives Designated as Cash Flow Hedges [Member] | Cash Flow Hedging [Member] | Unconsolidated Funds [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of derivatives in an asset position	$ 4,437	$ 3,724
Percent of notional amount related to the Fund	100.00%

Derivative Contracts - Impact o

Derivative Contracts - Impact of Hedges on AOCI and Statements of Operations (Details) - Cash Flow Hedging [Member] - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Derivatives Designated as Cash Flow Hedges [Member]
Derivative [Line Items]
Gain (loss) recorded in AOCI	$ (4,027)	$ (37,927)
Gain (loss) reclassified from AOCI	(10,353)	(21,361)
Derivatives Designated as Cash Flow Hedges [Member] | Interest Expense [Member]
Derivative [Line Items]
Gain recorded	38	0
Derivatives Designated as Cash Flow Hedges [Member] | Unconsolidated Funds [Member]
Derivative [Line Items]
Gain (loss) recorded in AOCI	610	(814)
Gain (loss) reclassified from AOCI	(193)	(311)
Derivatives Not Designated as Cash Flow Hedges [Member] | Interest Expense [Member]
Derivative [Line Items]
Gain (loss) recorded as interest expense	$ 0	$ 0

Derivative Contracts - Future R

Derivative Contracts - Future Reclassifications from AOCI (Details) $ in Thousands	Sep. 30, 2017USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative designated as cash flow hedge to be reclassified	$ (702)
Unconsolidated Funds [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative designated as cash flow hedge to be reclassified	$ 772

Equity - Narrative (Details)

Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]
Number of operating partnership units converted to shares of common stock (shares)		986,000	1,300,000
Shares of common stock issued for exercise of stock options (shares)		1,300,000	1,500,000
Number of stock options exercised (shares)		3,900,000	7,600,000
Shares of common stock sold (shares)		15,700,000	1,400,000
Net proceeds from common stock issued		$ 593,300	$ 49,400
Number of operating partnership units redeemed for cash (shares)			25,000
Aggregate purchase price for redemption of operating partnership units			$ 826
Average price of units (usd per share)			$ 33.05
Common stock, shares outstanding (in shares)		169,487,292		151,530,210
Number of OP units and fully-vested LTIP units outstanding		24,700,000
Number of shares of common stock issued upon redemption of one OP unit (shares)		1
Partnership Interest [Member]
Schedule of Equity Method Investments [Line Items]
Investors' ownership in joint venture (percent)		13.00%
Westwood Portfolio [Member] | Investor [Member]
Schedule of Equity Method Investments [Line Items]
Investors' ownership in joint venture (percent)	70.00%		70.00%
Investors' contribution to joint venture	$ 320,000		$ 320,000
Investors' ownership acquired during period with direct investment (percent)			40.00%
Westwood Portfolio [Member] | Corporate Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of joint venture sold	30.00%		30.00%
Proceeds from divestiture of partial interest in joint venture			$ 241,100
Gain on sale of interest in joint venture			$ 1,100
Third Quarter Acquisitions [Member] | Investor [Member]
Schedule of Equity Method Investments [Line Items]
Investors' ownership in joint venture (percent)	80.00%		80.00%
Investors' contribution to joint venture	$ 139,800		$ 139,800
Third Quarter Acquisitions [Member] | Corporate Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of joint venture sold	35.00%		35.00%
Proceeds from divestiture of partial interest in joint venture	$ 51,600
Gain on sale of interest in joint venture	$ 587

Equity - Condensed Consolidated

Equity - Condensed Consolidated Statements of Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Douglas Emmett, Inc. Stockholders' Equity, Beginning Balance			$ 1,921,143
Noncontrolling Interests, Beginning Balance			1,092,928
Total Equity, Beginning Balance			3,014,071	$ 2,281,548
Net income attributable to common stockholders	$ 25,614	$ 31,848	64,907	65,696
Noncontrolling Interests, Net Income	2,894	3,950	7,534	7,928
Net income	28,508	35,798	72,441	73,624
Cash flow hedge fair value adjustment, total equity	1,493	18,429	7,129	(17,069)
Contributions to consolidated JVs			284,248	459,750
Sale of equity interest in consolidated JV				291,029
Dividends and distributions, Douglas Emmett, Inc. Stockholders' Equity			(111,177)	(98,501)
Dividends and distributions, total equity			(139,859)	(124,686)
Exchange of OP units for common stock			0	0
Repurchase of OP units				(826)
Exercise of stock options(1)			(52,867)	(53,467)
Stock-based compensation, total equity			8,642	7,759
Sale of common stock, net of offering costs			593,272	49,379
Douglas Emmett, Inc. Stockholders' Equity, Ending Balance	2,435,922		2,435,922
Noncontrolling Interests, Ending Balance	1,351,155		1,351,155
Total Equity, Ending Balance	3,787,077	2,967,041	3,787,077	2,967,041
Douglas Emmett Inc Stockholders' Equity [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Douglas Emmett, Inc. Stockholders' Equity, Beginning Balance			1,921,143	1,926,211
Net income attributable to common stockholders			64,907	65,696
Cash flow hedge fair value adjustment, Douglas Emmett, Inc. Stockholders' Equity			7,383	(14,376)
Contributions to consolidated JVs			0	0
Sale of equity interest in consolidated JV				0
Dividends and distributions, Douglas Emmett, Inc. Stockholders' Equity			(111,177)	(98,501)
Exchange of OP units for common stock			13,261	17,733
Repurchase of OP units				(498)
Exercise of stock options(1)			(52,867)	(53,467)
Stock-based compensation, Douglas Emmett Stockholders' Equity			0	0
Sale of common stock, net of offering costs			593,272	49,379
Douglas Emmett, Inc. Stockholders' Equity, Ending Balance	2,435,922	1,892,177	2,435,922	1,892,177
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling Interests, Beginning Balance			1,092,928	355,337
Noncontrolling Interests, Net Income			7,534	7,928
Cash flow hedge fair value adjustment, noncontrolling interest			(254)	(2,693)
Contributions to consolidated JVs			284,248	459,750
Sale of equity interest in consolidated JV				291,029
Dividends and distributions, noncontrolling interest			(28,682)	(26,185)
Exchange of OP units for common stock			(13,261)	(17,733)
Repurchase of OP units				(328)
Exercise of stock options(1)			0	0
Stock-based compensation, noncontrolling interest			8,642	7,759
Sale of common stock, net of offering costs			0	0
Noncontrolling Interests, Ending Balance	$ 1,351,155	$ 1,074,864	$ 1,351,155	$ 1,074,864

Equity - Net Income Attributabl

Equity - Net Income Attributable to Common Stockholders and Transfers (to) from Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Stockholders' Equity Note [Abstract]
Net income attributable to common stockholders	$ 25,614	$ 31,848	$ 64,907	$ 65,696
Exchange of OP Units with noncontrolling interests			13,261	17,733
Repurchase of OP Units from noncontrolling interests			0	(498)
Net transfers from noncontrolling interests			13,261	17,235
Change from net income attributable to common stockholders and transfers from noncontrolling interests			$ 78,168	$ 82,931

Equity - Accumulated Other Comp

Equity - Accumulated Other Comprehensive Income Schedule (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			$ 15,156
Net current period OCI	$ 1,493	$ 18,429	7,129	$ (17,069)
Ending balance	22,539		22,539
Cash Flow Hedging [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			15,156	(9,285)
Other comprehensive income (loss) before reclassifications			(4,027)	(37,927)
Reclassifications from AOCI			10,353	21,361
Net current period OCI			7,129	(17,069)
OCI attributable to noncontrolling interests			254	2,693
OCI attributable to common stockholders			7,383	(14,376)
Ending balance	$ 22,539	$ (23,661)	22,539	(23,661)
Cash Flow Hedging [Member] | Fund X [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Other comprehensive income (loss) before reclassifications			610	(814)
Reclassifications from AOCI			$ 193	$ 311

Equity - Equity Compensation (D

Equity - Equity Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Stockholders' Equity Note [Abstract]
Net stock-based compensation expense	$ 2,600	$ 2,300	$ 7,910	$ 7,077
Capitalized stock-based compensation for improvements to real estate and developments	257	235	732	683
Intrinsic value of options exercised	$ 400	$ 2,100	$ 102,500	$ 104,000

EPS - Summary of EPS Computatio

EPS - Summary of EPS Computation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Net income attributable to common stockholders	$ 25,614	$ 31,848	$ 64,907	$ 65,696
Allocation to participating securities: Unvested LTIP Units	(158)	(180)	(345)	(365)
Numerator for basic and diluted net income attributable to common stock holders	$ 25,456	$ 31,668	$ 64,562	$ 65,331
Weighted average shares of common stock outstanding - basic (in shares)	165,471	150,753	158,000	148,578
Effect of dilutive securities: Stock options (in shares)	49	2,666	419	4,241
Weighted average shares of common stock and common stock equivalents outstanding - diluted (in shares)	165,520	153,419	158,419	152,819
Basic EPS:
Net income attributable to common stockholders per share (usd per share)	$ 0.154	$ 0.210	$ 0.409	$ 0.440
Diluted EPS:
Net income attributable to common stockholders per share (usd per share)	$ 0.154	$ 0.206	$ 0.408	$ 0.428
Operating Partnership Units and Vested LTIP Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of weighted average diluted shares (in shares)	24,790	24,788	24,750	25,148
Vested LTIP Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of weighted average diluted shares (in shares)	8	675	358	766

Fair Value of Financial Instr70

Fair Value of Financial Instruments - Estimated Fair Value of Secured Notes Payable (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Secured notes payable	$ 4,080,901	$ 4,429,224
Reported Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Secured notes payable	$ 4,087,638	$ 4,408,083

Fair Value of Financial Instr71

Fair Value of Financial Instruments - Financial Instruments Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative Assets:
Fair value - derivatives	$ 37,115	$ 35,656
Derivative Liabilities:
Fair value - derivatives	$ 2,002	6,830
Fund X [Member] | Interest Rate Swap [Member]
Derivative Liabilities:
Percent of notional amount related to the Fund	100.00%
Level 2
Derivative Assets:
Fair value - derivatives	$ 37,115	35,656
Derivative Liabilities:
Fair value - derivatives	2,002	6,830
Level 2 | Fund X [Member]
Derivative Assets:
Fair value - unconsolidated Funds' derivatives	4,632	3,605
Derivative Liabilities:
Fair value - unconsolidated Funds' derivatives	$ 0	$ 0

Segment Reporting - Narrative (

Segment Reporting - Narrative (Details)	9 Months Ended
	Sep. 30, 2017segment
Segment Reporting [Abstract]
Number of reportable business segments	2

Segment Reporting - Operating A

Segment Reporting - Operating Activity Within Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Total office revenues	$ 184,618	$ 167,608	$ 530,508	$ 475,083
Office expenses	(62,468)	(56,926)	(175,240)	(158,190)
Total multifamily revenues	24,131	24,513	72,354	72,825
Multifamily expenses	(6,041)	(5,950)	(17,866)	(17,322)
Segment profit	140,240	129,245	409,756	372,396
Office segment [Member]
Segment Reporting Information [Line Items]
Total office revenues	184,618	167,608	530,508	475,083
Office expenses	(62,468)	(56,926)	(175,240)	(158,190)
Segment profit	122,150	110,682	355,268	316,893
Multifamily segment [Member]
Segment Reporting Information [Line Items]
Total multifamily revenues	24,131	24,513	72,354	72,825
Multifamily expenses	(6,041)	(5,950)	(17,866)	(17,322)
Segment profit	$ 18,090	$ 18,563	$ 54,488	$ 55,503

Segment Reporting - Reconciliat

Segment Reporting - Reconciliation of Segment Profit to Net Income Attributable to Common Stockholders (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting [Abstract]
Total profit from all segments	$ 140,240	$ 129,245	$ 409,756	$ 372,396
General and administrative	(8,441)	(8,099)	(27,189)	(25,573)
Depreciation and amortization	(69,974)	(63,827)	(206,141)	(181,947)
Other income	2,659	2,295	7,152	6,527
Other expenses	(1,659)	(2,916)	(5,156)	(7,828)
Income, including depreciation, from unconsolidated real estate funds	1,137	2,334	4,427	5,564
Interest expense	(35,454)	(36,479)	(110,408)	(109,842)
Income before gains	28,508	22,553	72,441	59,297
Gains on sales of investments in real estate	0	13,245	0	14,327
Net income	28,508	35,798	72,441	73,624
Less: Net income attributable to noncontrolling interests	(2,894)	(3,950)	(7,534)	(7,928)
Net income attributable to common stockholders	$ 25,614	$ 31,848	$ 64,907	$ 65,696

Future Minimum Lease Rental R75

Future Minimum Lease Rental Receipts - Summary of Minimum Rental Receipts (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)land_parcel
Real Estate Properties [Line Items]
2,018	$ 528,867
2,019	477,732
2,020	416,289
2,021	333,742
2,022	251,975
Thereafter	657,646
Total future minimum base rentals	$ 2,666,251
Term of residential leases	1 year
Wholly Owned Properties [Member]
Real Estate Properties [Line Items]
Number of land parcels | land_parcel	2

Future Minimum Lease Rental P76

Future Minimum Lease Rental Payments - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Ground lease payments	$ 183	$ 183	$ 550	$ 550

Future Minimum Lease Rental P77

Future Minimum Lease Rental Payments - Summary of Ground Lease Payments (Details) $ in Thousands	Sep. 30, 2017USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,018	$ 733
2,019	733
2,020	733
2,021	733
2,022	733
Thereafter	47,094
Total future minimum lease payments	50,759
Future ground rent payments per year	$ 733

Commitments, Contingencies an78

Commitments, Contingencies and Guarantees - Narrative (Details)	3 Months Ended	9 Months Ended
	Mar. 31, 2016USD ($)apartment	Sep. 30, 2017USD ($)propertyapartment
Loss Contingencies [Line Items]
Amount accounts are insured for by Federal Deposit Insurance Corporation		$ 250,000
Number of properties containing Asbestos | property		27
Contractual amount for development project		$ 4,800,000
Apartment Building [Member]
Loss Contingencies [Line Items]
Contractual amount for development project		$ 73,100,000
Apartment Building [Member] | HAWAII
Loss Contingencies [Line Items]
Number of apartments under construction | apartment	475
Estimated construction costs	$ 120,000,000
Apartment Building [Member] | CALIFORNIA
Loss Contingencies [Line Items]
Expected number of apartments to be constructed | apartment		376
Minimum [Member] | Apartment Building [Member] | CALIFORNIA
Loss Contingencies [Line Items]
Estimated construction costs		$ 180,000,000
Maximum [Member] | Apartment Building [Member] | CALIFORNIA
Loss Contingencies [Line Items]
Estimated construction costs		$ 200,000,000
Unconsolidated Funds [Member]
Loss Contingencies [Line Items]
Number of properties containing Asbestos | property		4

Commitments, Contingencies an79

Commitments, Contingencies and Guarantees - Schedule of Debt Related to Unconsolidated Funds (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)property	Dec. 31, 2016USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 4,048,828	$ 4,369,537
Partnership X [Member]
Debt Instrument [Line Items]
Loan Maturity Date	Mar. 1, 2023
Long-term debt	$ 110,000
Collateral, number of properties | property	2
Maximum future payments under the swap agreement	$ 3,400
Partnership X [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Variable Interest Rate - basis spread	1.40%
Swap Fixed Interest Rate	2.30%
Swap Maturity Date	Mar. 1, 2021
Fund X [Member]
Debt Instrument [Line Items]
Loan Maturity Date	Jul. 1, 2024
Long-term debt	$ 400,000
Collateral, number of properties | property	6
Maximum future payments under the swap agreement	$ 34,500
Loan agreement, one month LIBOR maximum for interest rate cap requirement	3.56%
Loan agreement, number of consecutive days	14 days
Fund X [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Variable Interest Rate - basis spread	1.65%
Swap Fixed Interest Rate	3.44%
Swap Maturity Date	Jul. 1, 2022
Unconsolidated Funds [Member]
Debt Instrument [Line Items]
Long-term debt	$ 510,000
LIBOR [Member] | Partnership X [Member]
Debt Instrument [Line Items]
Loan agreement LIBOR floor	0.00%
LIBOR [Member] | Fund X [Member]
Debt Instrument [Line Items]
Loan agreement LIBOR floor	0.00%