Equity - Narrative (Details)					8 Months Ended	12 Months Ended		24 Months Ended	27 Months Ended	65 Months Ended
		Aug. 08, 2019	May 01, 2019 USD ($) shares	Apr. 30, 2019 shares	Dec. 31, 2019 USD ($) vote shares	Dec. 31, 2019 USD ($) vote $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) vote shares	Dec. 31, 2019 USD ($) vote $ / shares shares	Dec. 31, 2017 shares	Dec. 31, 2016 shares	Jun. 30, 2015 shares
Class of Stock [Line Items]
Common stock, number of shares outstanding (in shares)			252,863,421	78,054,934	227,853,720	227,853,720	174,278,341		227,853,720	227,853,720
Proceeds from issuance of equity | $								$ 2,700,000,000	$ 2,700,000,000
Common stock issued | $	[1]				$ 228,000	$ 228,000	$ 174,000		228,000	$ 228,000
Share Redemption Program
Class of Stock [Line Items]
Minimum balance of common stock | $					2,500	$ 2,500			2,500	2,500
Minimum holding period for redemption of stock						1 year
Quarterly cap | $					$ 117,200,000	$ 117,200,000			$ 117,200,000	$ 117,200,000
Share Redemption Program | Maximum
Class of Stock [Line Items]
Maximum redemption percentage of weighted average shares outstanding						5.00%
Common Stock
Class of Stock [Line Items]
Common stock, number of shares outstanding (in shares)					227,853,720	227,853,720	174,278,341		227,853,720	227,853,720	179,121,568	184,494,771
Gross proceeds from issuance of common stock (shares)						973,490
Common Stock | Share Redemption Program
Class of Stock [Line Items]
Stock redeemed during period (in shares)						20,933,322	8,695,600			24,230,565
Stock redeemed, value | $										$ 228,700,000
Weighted average price per share (in usd per share) | $ / shares						$ 9.44	$ 9.61			$ 9.44
Signature Office REIT Merger
Class of Stock [Line Items]
Implied EA-1 common stock issued in consideration													43,772,611
Follow-on Offering
Class of Stock [Line Items]
Implied EA-1 common stock issued in consideration					8,412,006	8,412,006			8,412,006	8,412,006
Termination period after inspection		3 years
Distribution Reinvestment Plan
Class of Stock [Line Items]
Prior notice period to terminate plan						10 days
Common stock issued | $					$ 293,700,000	$ 293,700,000	$ 252,800,000		$ 293,700,000	$ 293,700,000
Common Class T
Class of Stock [Line Items]
Number of votes per share | vote					1	1			1	1
Common stock, number of shares outstanding (in shares)					407,773	407,773			407,773	407,773
Common Class S
Class of Stock [Line Items]
Common stock, number of shares outstanding (in shares)					1,790	1,790			1,790	1,790
Common Class D
Class of Stock [Line Items]
Common stock, number of shares outstanding (in shares)					25,860	25,860			25,860	25,860
Common Class I
Class of Stock [Line Items]
Common stock, number of shares outstanding (in shares)					1,607,399	1,607,399			1,607,399	1,607,399
Common Class A
Class of Stock [Line Items]
Common stock, number of shares outstanding (in shares)					24,035,934	24,035,934			24,035,934	24,035,934
Common Class AA
Class of Stock [Line Items]
Common stock, number of shares outstanding (in shares)					46,675,314	46,675,314			46,675,314	46,675,314
Common Class AAA
Class of Stock [Line Items]
Common stock, number of shares outstanding (in shares)					947,992	947,992			947,992	947,992
Common Class E
Class of Stock [Line Items]
Common stock, number of shares outstanding (in shares)					154,151,658	154,151,658			154,151,658	154,151,658
Gross proceeds from issuance of common stock (shares)				174,981,547
Common Stock
Class of Stock [Line Items]
Perpetual convertible preferred shares and Common stock subject to redemption | $					$ 20,565,000	$ 20,565,000	$ 11,523,000		$ 20,565,000	$ 20,565,000
Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Shares vested in period (shares)					252,353
Vesting installments (percent)			25.00%
Fair value of grants issued | $			$ 9,700,000
Total forfeitures (shares)					9,124
Total compensation expense | $						2,400,000
Unrecognized compensation expense | $					$ 7,200,000	$ 7,200,000			$ 7,200,000	$ 7,200,000
Recognition period for unrecognized expense						3 years
Chief Executive Officer
Class of Stock [Line Items]
Initial term						5 years
Renewal term						1 year
Mr. Escalante | Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Restricted shares issued (shares)			732,218
Mr. Bitar | Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Restricted shares issued (shares)			104,603
Mr. Hirsch | Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Restricted shares issued (shares)			67,992
Mr. Sohn | Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Restricted shares issued (shares)			52,301
Mr. Tausk | Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Restricted shares issued (shares)			52,301

[1] See Note 10, Equity, for the number of shares outstanding of each class of common stock as of December 31, 2019.