Debt Instrument, Assets Used in Calculation of Collateral Amount

No definition available.

Name:	art_DebtInstrumentAssetsUsedinCalculationofCollateralAmount
Namespace Prefix:	art_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Debt Instrument, Collateral Number of Properties

+ References

No definition available.

+ Details

Name:	art_DebtInstrumentCollateralNumberofProperties
Namespace Prefix:	art_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Base Coverage Ratio, Minimum

+ References

No definition available.

+ Details

Name:	art_DebtInstrumentCovenantBaseCoverageRatioMinimum
Namespace Prefix:	art_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Borrowing Base Debt Service Coverage Ratio, Minimum

+ References

No definition available.

+ Details

Name:	art_DebtInstrumentCovenantBorrowingBaseDebtServiceCoverageRatioMinimum
Namespace Prefix:	art_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Current Borrowing Base Debt Service Coverage Ratio

+ References

No definition available.

+ Details

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Namespace Prefix:	art_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Fixed Charge Coverage Ratio, Minimum

+ References

No definition available.

+ Details

Name:	art_DebtInstrumentCovenantFixedChargeCoverageRatioMinimum
Namespace Prefix:	art_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Leverage Ratio, Maximum

+ References

No definition available.

+ Details

Name:	art_DebtInstrumentCovenantLeverageRatioMaximum
Namespace Prefix:	art_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Principal Repayment if Change in Control Occurs, Percentage

+ References

No definition available.

+ Details

Name:	art_DebtInstrumentCovenantPrincipalRepaymentifChangeinControlOccursPercentage
Namespace Prefix:	art_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Tangible Net Worth, Additional Percentage of Net Equity Proceeds, Minimum

+ References

No definition available.

+ Details

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Namespace Prefix:	art_
Data Type:	num:percentItemType
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Period Type:	instant

- Definition

Debt Instrument, Covenant, Tangible Net Worth, Minimum

+ References

No definition available.

+ Details

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Namespace Prefix:	art_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Debt Instrument, Covenant, Total Secured Indebtedness Ratio, Maximum

+ References

No definition available.

+ Details

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Namespace Prefix:	art_
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Period Type:	instant

- Definition

Debt Instrument, Covenant, Unsecured Debt Service Ratio, Minimum

+ References

No definition available.

+ Details

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Namespace Prefix:	art_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Unsecured Indebtedness to Qualified Assets Ratio, Maximum

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Debt Instrument, Minimum Principal for Early Repayment of Debt

+ References

No definition available.

+ Details

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Namespace Prefix:	art_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Notice Period for Early Repayment of Dbt

+ References

No definition available.

+ Details

Name:	art_DebtInstrumentNoticePeriodforEarlyRepaymentofDbt
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Number of Instruments

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Recourse Secured Debt Ratio, Maximum

+ References

No definition available.

+ Details

Name:	art_DebtInstrumentRecourseSecuredDebtRatioMaximum
Namespace Prefix:	art_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of Credit, Commitment Fee Increase (Decrease), Percentage

+ References

No definition available.

+ Details

Name:	art_LineofCreditCommitmentFeeIncreaseDecreasePercentage
Namespace Prefix:	art_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facility, Maximum Borrowing Capacity Available to be Used for Foreign Currencies

+ References

No definition available.

+ Details

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Namespace Prefix:	art_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Loans and Lease Receivable, Annual Payment Amount

+ References

No definition available.

+ Details

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Namespace Prefix:	art_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Loans and Leases Receivable, Interest Rate, Effective Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	art_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Loans and Leases Receivable, Stated Interest Rate

+ References

No definition available.

+ Details

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Namespace Prefix:	art_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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

- Definition

Value of input used to measure debt instrument, including, but not limited to, convertible and non-convertible debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Amount of the required periodic payments including both interest and principal payments.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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+ Details

Name:	us-gaap_DeferredFinanceCostsNet
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date.

+ References

+ Details

Name:	us-gaap_NotesReceivableFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Name:	us-gaap_NotesReceivableNet
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

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

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_NotesPayableOtherPayablesMember
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- Details

Name:	us-gaap_DebtInstrumentAxis=art_InstallmentNotesPayableMember
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Name:	srt_RangeAxis=srt_MinimumMember
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- Details

Name:	srt_RangeAxis=srt_MaximumMember
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- Details

Name:	dei_LegalEntityAxis=art_AmericoldRealtyOperatingPartnershipL.P.Member
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- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
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- Details

Name:	us-gaap_DebtInstrumentAxis=art_TwoThousandEighteenSeniorUnsecuredCreditFacilitiesMember
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Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
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Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
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Name:	us-gaap_LongtermDebtTypeAxis=art_LineofCreditandMediumTermNotesMember
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Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
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Name:	us-gaap_DebtInstrumentAxis=art_SeniorUnsecuredNotesDue2026and2029Member
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Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_MortgagesMember
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Name:	us-gaap_LongtermDebtTypeAxis=art_MezzanineNotesMember
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Debt of the Operating Partnership - Additional Information (Details)			6 Months Ended
	Dec. 04, 2018 USD ($)	Nov. 06, 2018 USD ($)	Jun. 30, 2019 USD ($)	May 01, 2019 USD ($)	Apr. 26, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 03, 2018 USD ($)	Jun. 30, 2018	May 01, 2013 USD ($) warehouse instrument
Debt Instrument [Line Items]
Letter of credit amount outstanding			$ 29,300,000			$ 29,600,000
Installment Notes Payable \| Installment Notes Payable
Debt Instrument [Line Items]
Borrowing base collateral value			$ 500,000
Installment Notes Payable \| Minimum \| Installment Notes Payable
Debt Instrument [Line Items]
Interest rate			1.00%
Implied percentage			4.60%
Installment Notes Payable \| Maximum \| Installment Notes Payable
Debt Instrument [Line Items]
Interest rate			1.70%
Implied percentage			4.90%
Americold Realty Operating Partnership, L.P.
Debt Instrument [Line Items]
Carrying value of notes payable			$ 1,710,523,000
Americold Realty Operating Partnership, L.P. \| Line of Credit \| 2018 Senior Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Change in fee on unused borrowing capacity	0.50%
Maximum leverage ratio			60.00%
Minimum base coverage ratio			1.00
Minimum fixed charge coverage ratio			1.40					1.50
Minimum borrowing base debt service coverage ratio			2.00
Minimum tangible net worth requirement			$ 900,000,000
Minimum tangible net worth requirement, additional percentage of net equity proceeds			70.00%
Maximum recourse secured debt ratio			0.2
Americold Realty Operating Partnership, L.P. \| Line of Credit \| Revolving Credit Facility \| 2018 Senior Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Revolver borrowing capacity	$ 800,000,000						$ 450,000,000
Revolver borrowing capacity, foreign currencies	400,000,000
Unamortized debt issuance cost	$ 8,900,000		$ 4,200,000
Fair value of notes payable			$ 0			0
Implied percentage			0.36%
Americold Realty Operating Partnership, L.P. \| Line of Credit \| Revolving Credit Facility \| LIBOR \| 2018 Senior Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Applicable interest rate			1.45%
Americold Realty Operating Partnership, L.P. \| Line of Credit and Medium-Term Notes \| 2018 Senior Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Gross value of assets included in calculations under credit agreement			$ 4,200,000,000
Borrowing base collateral value			2,500,000,000
Letter of credit amount outstanding			$ 29,200,000
Americold Realty Operating Partnership, L.P. \| Line of Credit and Medium-Term Notes \| Revolving Credit Facility \| LIBOR \| Minimum \| 2018 Senior Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Applicable interest rate			2.35%
Americold Realty Operating Partnership, L.P. \| Line of Credit and Medium-Term Notes \| Revolving Credit Facility \| LIBOR \| Maximum \| 2018 Senior Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Applicable interest rate			1.45%
Americold Realty Operating Partnership, L.P. \| Senior Notes \| Senior Unsecured Notes
Debt Instrument [Line Items]
Maximum leverage ratio			60.00%
Minimum fixed charge coverage ratio			1.50
Minimum principal for repayment of debt		5.00%
Notice period for repayment of debt		10 days
Principal repayment if change in control occurs		100.00%
Maximum unsecured indebtedness to qualified assets ratio			0.60
Minimum unsecured debt service ratio			2.00
Maximum total secured indebtedness ratio			0.40
Fair value of notes payable			$ 1,009,375,000			609,500,000
Americold Realty Operating Partnership, L.P. \| Senior Notes \| Series C 4.10% notes due 2030
Debt Instrument [Line Items]
Face amount of debt					$ 350,000,000
Interest rate			4.10%		4.10%
Fair value of notes payable			$ 361,375,000			0
Implied percentage			4.16%
Americold Realty Operating Partnership, L.P. \| Senior Notes \| Series A 4.68% notes due 2026
Debt Instrument [Line Items]
Face amount of debt		$ 200,000,000
Interest rate		4.68%	4.68%
Fair value of notes payable			$ 215,000,000			202,500,000
Implied percentage			4.77%
Americold Realty Operating Partnership, L.P. \| Senior Notes \| Series B 4.86% notes due 2029
Debt Instrument [Line Items]
Face amount of debt		$ 400,000,000
Interest rate		4.86%	4.86%
Fair value of notes payable			$ 433,000,000			407,000,000
Implied percentage			4.92%
Americold Realty Operating Partnership, L.P. \| Senior Notes \| Discount Rate \| Senior Unsecured Notes
Debt Instrument [Line Items]
Discount rate		0.005
Americold Realty Operating Partnership, L.P. \| Mortgage Loans \| 2010 CMBS Financing
Debt Instrument [Line Items]
Indebtedness repaid		$ 600,000,000
Americold Realty Operating Partnership, L.P. \| Mortgage Loans \| 2013 Mortgage Loans
Debt Instrument [Line Items]
Minimum borrowing base debt service coverage ratio									1.10
Face amount of debt									$ 322,000,000.0
Number of properties \| warehouse									15
Restricted cash associated with debt			$ 3,400,000
Debt service coverage ratio			1.72
Fair value of notes payable			$ 290,162,000			283,687,000
Americold Realty Operating Partnership, L.P. \| Mortgage Loans \| Minimum \| 2013 Mortgage Loans
Debt Instrument [Line Items]
Interest rate									3.81%
Americold Realty Operating Partnership, L.P. \| Mortgage Loans \| Maximum \| 2013 Mortgage Loans
Debt Instrument [Line Items]
Interest rate									11.50%
Americold Realty Operating Partnership, L.P. \| Mezzanine Notes \| 2013 Mortgage Loans
Debt Instrument [Line Items]
Number of notes \| instrument									2
Americold Realty Operating Partnership, L.P. \| Installment Notes Payable \| Installment Notes Payable
Debt Instrument [Line Items]
Fair value of notes payable			$ 13,300,000	$ 13,300,000		$ 0
Carrying value of notes payable				20,600,000
Enterprise IL NMTC Fund I, LLC
Debt Instrument [Line Items]
Fixed interest rate for notes receivable			1.10%
Implied interest rate for notes receivable			3.70%
Chase NMTC Cloverleaf ASP Investment Fund LLC
Debt Instrument [Line Items]
Fixed interest rate for notes receivable			1.50%
Implied interest rate for notes receivable			3.40%
Enterprise IL NMTC Fund I, LLC and Chase NMTC Cloverleaf ASP Investment Fund LLC
Debt Instrument [Line Items]
Carrying value of notes receivable				14,900,000
Enterprise IL NMTC Fund I, LLC and Chase NMTC Cloverleaf ASP Investment Fund LLC \| Americold Realty Operating Partnership, L.P.
Debt Instrument [Line Items]
Fair value of notes receivable				$ 11,000,000
Through 2022 \| Installment Notes Payable \| Installment Notes Payable
Debt Instrument [Line Items]
Annual payments			$ 300,000
Through 2022 \| Enterprise IL NMTC Fund I, LLC and Chase NMTC Cloverleaf ASP Investment Fund LLC
Debt Instrument [Line Items]
Annual payments to be received from notes receivable			200,000
From 2022 Through Maturity \| Installment Notes Payable \| Installment Notes Payable
Debt Instrument [Line Items]
Annual payments			1,000,000
From 2022 Through Maturity \| Enterprise IL NMTC Fund I, LLC and Chase NMTC Cloverleaf ASP Investment Fund LLC
Debt Instrument [Line Items]
Annual payments to be received from notes receivable			$ 800,000