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Equity, Share Subject To Quarterly Cap On Aggregate Redemptions

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Limited liability partnership interest held.

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Partnership Units, Conversion, Number of New Partnership Units Issued Upon Conversion

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Partnership Units, Units Issued Upon Conversion

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Repurchase of redeemable noncontrolling interest.

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Redemption Percentage Weighted Average Shares Outstanding

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Face amount or stated value per share of common stock.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Number of shares issued for each share of convertible preferred stock that is converted.

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Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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The number of limited partner units outstanding.

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The number of shares issued as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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Number of new stock issued during the period.

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The number of units or equivalent units outstanding for all classes.

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Organization - Narrative (Details) $ / shares in Units, $ in Billions					3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 10, 2019 shares	Apr. 30, 2019 $ / shares shares	Dec. 14, 2018 shares	Sep. 20, 2017 USD ($)	Sep. 30, 2018	Jun. 30, 2019 USD ($) $ / shares shares	Dec. 31, 2018 $ / shares shares	May 06, 2019 $ / shares	May 01, 2019 shares	Apr. 29, 2019	Jun. 30, 2015 shares
Subsidiary, Sale of Stock [Line Items]
Exchange ratio		1.04807
Common Stock, par value (in usd per share) \| $ / shares						$ 0.001	$ 0.001	$ 0.001
Exchange ratio		1.04807
Number of shares outstanding (in shares)		78,054,934				243,610,554	174,470,284		252,863,421
GCEAR's operating partnership units outstanding as of April 30, 2019 (in shares)		527,045
Proceeds from issuance of private placement \| $				$ 2.2
Limited partnership, Company's ownership interest (percent)						88.50%
Limited partnership units redeemed (shares)						0	0
Implied EA-1 common stock issued in consideration		78,100,000
Sponsor and Affiliates
Subsidiary, Sale of Stock [Line Items]
Limited liability partnership percentage of interest held (percent)						10.00%
Third parties
Subsidiary, Sale of Stock [Line Items]
Limited liability partnership percentage of interest held (percent)						1.50%
Board Chairman
Subsidiary, Sale of Stock [Line Items]
Partnership units owned (shares)						2,400,000
Share Redemption Program
Subsidiary, Sale of Stock [Line Items]
Maximum redemption percentage of weighted average shares outstanding					5.00%
Common Class E
Subsidiary, Sale of Stock [Line Items]
Exchange ratio		1.04807								1.04807
Common Stock, par value (in usd per share) \| $ / shares		$ 0.001
Exchange ratio		1.04807
Partnership units issued (shares)		1
Number of shares issued (in shares)	7,217,570	174,981,547
Number of shares outstanding (in shares)						168,473,558
Series A Cumulative Perpetual Convertible Preferred Stock
Subsidiary, Sale of Stock [Line Items]
Number of shares issued upon conversion (shares)		1
Series A Preferred Stock
Subsidiary, Sale of Stock [Line Items]
Number of shares issued (in shares)		5,000,000
Number of shares outstanding (in shares)		5,000,000
Private Offering
Subsidiary, Sale of Stock [Line Items]
Proceeds from issuance of private placement \| $				2.0		$ 2.7
Implied EA-1 common stock issued in consideration						277,814,656
Distribution Reinvestment Plan
Subsidiary, Sale of Stock [Line Items]
Proceeds from issuance of private placement \| $				$ 0.2
Implied EA-1 common stock issued in consideration						268,100,000	252,800,000
Temporary Equity, Shares Outstanding						77,691,333
Signature Office REIT Merger
Subsidiary, Sale of Stock [Line Items]
Implied EA-1 common stock issued in consideration											43,772,611
OP Units
Subsidiary, Sale of Stock [Line Items]
GCEAR's operating partnership units outstanding as of April 30, 2019 (in shares)		284,533,435
GRECO
Subsidiary, Sale of Stock [Line Items]
Units of limited partnership exchanged as earn-out consideration (in shares)			20,438,684