Purchase price.

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Common Stock Conversion, Number of New Shares Issued Upon Conversion

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Number of Land Parcels Held for Future Development

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Real Estate, Measurement Input

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Real Estate, Number of Impaired Real Estate Properties

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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The charge against earnings in the period to reduce the carrying amount of real property to fair value.

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Net asset value per share or per unit of investments in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure.

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The number of real estate properties owned as of the balance sheet date.

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The number of states the entity operates in as of the balance sheet date.

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The cash inflow from the sale of land held for investment; excludes sales of land held as inventory or productive use.

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Cash received from the sale of real estate that is held for investment, that is, it is part of an investing activity during the period.

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Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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Real Estate - Narrative (Details) $ / shares in Units, $ in Thousands					6 Months Ended	12 Months Ended
	Nov. 20, 2019 USD ($)	Oct. 14, 2019 USD ($)	Sep. 05, 2019 USD ($)	Jul. 30, 2019 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2019 USD ($) property parcel state shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($)	May 01, 2019 shares	Apr. 30, 2019 $ / shares shares	Apr. 29, 2019 shares
Real Estate Properties [Line Items]
Number of properties \| property						99
Number of states \| state						25
Number of land parcels held \| parcel						1
Purchase price						$ 4,200,000
Depreciation expense					$ 56,000	80,394	$ 60,120	$ 55,982
Amortization of intangible assets					$ 60,600	$ 73,031	$ 59,048	60,601
Common stock, number of shares outstanding (in shares) \| shares						227,853,720	174,278,341		252,863,421	78,054,934
Exchange ratio										1.04807
Useful life						7 years 4 months 9 days	6 years 7 months 6 days
Real estate investment property						$ 3,610,329	$ 2,534,952	2,442,576
Gain on sale of real estate						29,940	1,231	116,382
Proceeds from disposition of properties						139,446	$ 11,442	$ 394,502
Lynnwood IV
Real Estate Properties [Line Items]
Proceeds from sale of land				$ 1,800
Real estate investment property				1,300
Gain on sale of real estate				$ 300
7601 Technology Way
Real Estate Properties [Line Items]
Real estate investment property			$ 37,600
Gain on sale of real estate			8,100
Proceeds from disposition of properties			$ 48,800
10 Commerce Center Parkway
Real Estate Properties [Line Items]
Proceeds from disposition of properties		$ 30,300
2160 East Grand Avenue
Real Estate Properties [Line Items]
Real estate investment property	$ 41,500
Gain on sale of real estate	21,500
Proceeds from disposition of properties	$ 63,500
2200 Channahon Road and Houston Way I
Real Estate Properties [Line Items]
Impairment of real estate						$ 30,700
Number of impaired properties \| property						2
Griffin Capital Essential Asset REIT, Inc.
Real Estate Properties [Line Items]
Common stock, number of shares outstanding (in shares) \| shares											167,000,000
EA-1's net asset value per share \| $ / shares										$ 10.02
Discount rate \| Minimum
Real Estate Properties [Line Items]
Discount rate (percent)						0.0575
Discount rate \| Maximum
Real Estate Properties [Line Items]
Discount rate (percent)						0.1175
Common Class E
Real Estate Properties [Line Items]
Common stock, number of shares outstanding (in shares) \| shares						154,151,658
Exchange ratio										1.04807