Name:	ck0001755755_RealEstateGrossAtCarryingValueIncludingCapitalizedInterestIncludingHeldForSale
Namespace Prefix:	ck0001755755_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

SEC Schedule, 12-28, Real Estate Companies, Investment In Real Estate, Impairment

No definition available.

Name:	ck0001755755_SECSchedule1228RealEstateCompaniesInvestmentInRealEstateImpairment
Namespace Prefix:	ck0001755755_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Reclasses

No definition available.

Name:	ck0001755755_SECSchedule1228RealEstateCompaniesInvestmentInRealEstateReclasses
Namespace Prefix:	ck0001755755_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

SEC Schedule, 12-28, Real Estate Companies, Investment In Real Estate, Transfers To Held For Sale

No definition available.

Name:	ck0001755755_SECSchedule1228RealEstateCompaniesInvestmentInRealEstateTransfersToHeldForSale
Namespace Prefix:	ck0001755755_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Write-down, Amount

No definition available.

Name:	ck0001755755_SECSchedule1228RealEstateCompaniesInvestmentInRealEstateWriteDownAmount
Namespace Prefix:	ck0001755755_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of increase in real estate investments from acquisitions other than through foreclosure for entities with a substantial portion of business acquiring and holding investment real estate.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 970
-SubTopic 360
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-28(Column E)(Footnote 4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478979/970-360-S99-1

Name:	us-gaap_RealEstateOtherAcquisitions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of other additions excluding acquisition or improvement to real estate investments for entities with a substantial portion of business acquiring and holding investment real estate.

Name:	us-gaap_RealEstateOtherAdditions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of other deductions to real estate investments, excluding sales, for entities with a substantial portion of business acquiring and holding investment real estate.

Name:	us-gaap_RealEstateOtherDeductions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

Name:	us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_LandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=ck0001755755_IntangibleLeaseAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=ck0001755755_RealEstateHeldForSaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: