General - Narrative (Details) $ / shares in Units, R$ in Millions, $ in Millions												1 Months Ended	3 Months Ended				9 Months Ended
	Aug. 31, 2020 USD ($)	Mar. 06, 2020 USD ($)	Mar. 06, 2020 BRL (R$)	Jan. 02, 2020 USD ($)	Jan. 02, 2020 CAD ($)	Nov. 19, 2019 USD ($)	May 01, 2019 USD ($)	Apr. 22, 2019 USD ($) $ / shares shares	Feb. 01, 2019 USD ($)	Sep. 18, 2018 USD ($) $ / shares shares	Jan. 23, 2018 $ / shares shares	Mar. 31, 2019 USD ($) $ / shares shares	Sep. 30, 2020 USD ($) $ / shares shares	Jun. 30, 2020 USD ($) shares	Mar. 31, 2020 USD ($)	Mar. 31, 2020 BRL (R$)	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2019 USD ($)	Apr. 16, 2020 USD ($) $ / shares	Mar. 09, 2020 $ / shares shares	Mar. 08, 2020 shares	Dec. 31, 2019 $ / shares shares	Aug. 23, 2019 USD ($)
Subsidiary, Sale of Stock [Line Items]
Common shares, par value (in USD per share) | $ / shares													$ 0.01				$ 0.01		$ 0.01	$ 0.01		$ 0.01
Common shares, shares authorized (in shares) | shares													325,000,000				325,000,000			325,000,000	250,000,000	250,000,000
Preferred shares, shares authorized (in shares) | shares													25,000,000				25,000,000					25,000,000
Preferred shares, par value (in USD per share) | $ / shares													$ 0.01				$ 0.01					$ 0.01
Preferred shares, share issued (in shares) | shares													0				0					0
Preferred shares, share outstanding (in shares) | shares													0				0					0
Payments for asset acquisitions																	$ 25,538,000	$ 35,161,000
Payments to acquire investment																	$ 26,218,000	$ 0
IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares sold (in shares) | shares											33,350,000
Offering price (in USD per share) | $ / shares											$ 16.00
Underwriter's Option
Subsidiary, Sale of Stock [Line Items]
Number of shares sold (in shares) | shares								6,562,000			4,350,000	6,063,105
Proceeds from issuance of shares												$ 0
Public Offering
Subsidiary, Sale of Stock [Line Items]
Number of shares sold (in shares) | shares								42,062,000		4,000,000
Offering price (in USD per share) | $ / shares								$ 29.75		$ 24.50		$ 27.75
Proceeds from issuance of shares								$ 1,210,000,000		$ 92,500,000		$ 1,100,000,000			$ 233,600,000
Offering fees												$ 1,500,000
Number of shares subject to forward sale agreement (in shares) | shares								8,250,000		6,000,000
Public Offering - YF ART Holdings
Subsidiary, Sale of Stock [Line Items]
Number of shares sold (in shares) | shares												38,422,583
Public Offering - Goldman Sachs
Subsidiary, Sale of Stock [Line Items]
Number of shares sold (in shares) | shares												8,061,228
At the Market Equity Program
Subsidiary, Sale of Stock [Line Items]
Number of shares sold (in shares) | shares													0
Number of shares subject to forward sale agreement (in shares) | shares																	4,346,101
Value of shares subject to forward sale agreement																	$ 162,200,000
Authorized equity program																							$ 500,000,000.0
2020 At the Market Offering
Subsidiary, Sale of Stock [Line Items]
Number of shares sold (in shares) | shares														3,094,431
Proceeds from issuance of shares														$ 110,400,000
Offering fees														$ 2,400,000
Authorized equity program																			$ 500,000,000.0
Remaining availability under equity program													$ 227,400,000				$ 227,400,000
2020 At the Market Offering, To be Settled July 2021
Subsidiary, Sale of Stock [Line Items]
Number of shares subject to forward sale agreement (in shares) | shares																	2,429,104
Value of shares subject to forward sale agreement																	$ 89,600,000
2020 At the Market Offering, To be Settled September 2021
Subsidiary, Sale of Stock [Line Items]
Number of shares subject to forward sale agreement (in shares) | shares																	1,916,997
Value of shares subject to forward sale agreement																	$ 72,600,000
Americold Realty Operating Partnership, L.P. | General Partner
Subsidiary, Sale of Stock [Line Items]
Ownership of partnership																	99.00%
Americold Realty Operating Partnership, L.P. | Limited Partner | Americold Realty Operations, Inc.
Subsidiary, Sale of Stock [Line Items]
Ownership of partnership																	1.00%
Americold Realty Operating Partnership, L.P. | Limited Partner | Other Limited Partners
Subsidiary, Sale of Stock [Line Items]
Ownership of partnership																	0.01%
Cloverleaf
Subsidiary, Sale of Stock [Line Items]
Aggregate cash consideration							$ 1,240,000,000
Lanier Cold Storage
Subsidiary, Sale of Stock [Line Items]
Aggregate cash consideration							$ 81,900,000
Nova Cold Logistics
Subsidiary, Sale of Stock [Line Items]
Aggregate cash consideration				$ 259,600,000	$ 337.4
Newport Cold
Subsidiary, Sale of Stock [Line Items]
Aggregate cash consideration				$ 56,700,000
Port Fresh Holdings, LLC
Subsidiary, Sale of Stock [Line Items]
Payments for asset acquisitions									$ 35,200,000
MHW Group Inc.
Subsidiary, Sale of Stock [Line Items]
Payments for asset acquisitions						$ 50,800,000
Caspers Cold Storage
Subsidiary, Sale of Stock [Line Items]
Payments for asset acquisitions	$ 25,500,000
AM-C Warehouses
Subsidiary, Sale of Stock [Line Items]
Payments for asset acquisitions	$ 82,500,000
Superfrio Armazens Gerais S.A.
Subsidiary, Sale of Stock [Line Items]
Equity interest		14.99%	14.99%										14.99%		14.99%	14.99%	14.99%
Payments to acquire investment		$ 25,700,000	R$ 117.8													R$ 117.8