XML 118 R64.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Equity Equity - Distributions (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Class of Stock [Line Items] |  |  |
Distributions, Ordinary Income | $ 0.04 | $ 0.31 | $ 0.21
Distributions, Ordinary Income, Percent | 7.90% | 57.10% | 38.60%
Distributions, Return of Capital | $ 0.51 | $ 0.24 | $ 0.34
Distributions, Return of Capital, Percent | 92.10% | 42.90% | 61.40%
Distributions, Total | $ 0.55 | $ 0.55 | $ 0.55
Distributions, Total, Percent | 100.00% | 100.00% | 100.00%
Griffin Capital Essential Asset REIT, Inc. [Member] |  |  |
Class of Stock [Line Items] |  |  |
Distributions, Ordinary Income | $ 0.40 | $ 0.47 | $ 0.48
Distributions, Ordinary Income, Percent | 59.00% | 69.00% | 69.00%
Distributions, Capital Gain | $ 0.18 | $ 0.00 | $ 0.00
Distributions, Capital Gain, Percent | 26.00% | 0.00% | 0.00%
Distributions, Return of Capital | $ 0.10 | $ 0.21 | $ 0.21
Distributions, Return of Capital, Percent | 15.00% | 31.00% | 31.00%
Distributions, Total | $ 0.68 | $ 0.68 | $ 0.69
Distributions, Total, Percent | 100.00% | 100.00% | 100.00%

X
- Definition Distributions, Capital Gain + References No definition available. + Details
Name: | gcnl_DistributionsCapitalGain
Namespace Prefix: | gcnl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Distributions, Capital Gain, Percent + References No definition available. + Details
Name: | gcnl_DistributionsCapitalGainPercent
Namespace Prefix: | gcnl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Distributions, Ordinary Income + References No definition available. + Details
Name: | gcnl_DistributionsOrdinaryIncome
Namespace Prefix: | gcnl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Distributions, Ordinary Income, Percent + References No definition available. + Details
Name: | gcnl_DistributionsOrdinaryIncomePercent
Namespace Prefix: | gcnl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Distributions, Return of Capital + References No definition available. + Details
Name: | gcnl_DistributionsReturnofCapital
Namespace Prefix: | gcnl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Distributions, Return of Capital, Percent + References No definition available. + Details
Name: | gcnl_DistributionsReturnofCapitalPercent
Namespace Prefix: | gcnl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Distributions, Total + References No definition available. + Details
Name: | gcnl_DistributionsTotal
Namespace Prefix: | gcnl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Distributions, Total, Percent + References No definition available. + Details
Name: | gcnl_DistributionsTotalPercent
Namespace Prefix: | gcnl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=gcnl_GriffinCapitalEssentialAssetREITInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |