General	6 Months Ended
Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General The Company Americold Realty Trust is a real estate investment trust (REIT) organized under Maryland law. During 2010, the Company formed a Delaware limited partnership, Americold Realty Operating Partnership, L.P. (the Operating Partnership), and transferred substantially all of its interests in entities and associated assets and liabilities to the Operating Partnership. This structure is commonly referred to as an umbrella partnership REIT or an UPREIT structure. The REIT is the sole general partner of the Operating Partnership, owning 100% of the common general partnership interest as of June 30, 2018. As the sole general partner of the Operating Partnership, the REIT has full, exclusive and complete responsibility and discretion in the day-to-day management and control of the Operating Partnership. The Operating Partnership includes numerous qualified REIT subsidiaries (QRSs). Additionally, the Operating Partnership conducts various business activities in the United States (U.S.), Australia, New Zealand, Argentina, and Canada through several wholly owned taxable REIT subsidiaries (TRSs). Ownership On January 23, 2018, the Company completed an initial public offering of its common shares, or the IPO, in which the Company issued and sold 33,350,000 of its common shares at $16.00 per share, which generated net proceeds of approximately $493.6 million to the Company. Other significant transactions that occurred in connection with the IPO include the issuance of new senior secured credit facilities, or the 2018 Senior Secured Credit Facilities, which are described in Note 5, and the redemption of all outstanding Series A Preferred Shares and the conversion of all outstanding Series B Preferred Shares, which are described in Note 4. Prior to the IPO, YF ART Holdings, a partnership among investment funds affiliated with The Yucaipa Companies (Yucaipa) and Fortress Investment Group, LLC (Fortress), owned approximately 100% of the Company’s common shares. As of June 30, 2018, YF ART Holdings owned approximately 38.3% of the Company's common shares. On March 8, 2018, YF ART Holdings used the proceeds from a margin loan to pay in full the outstanding preferred investment, including the preferred return thereon, of Fortress, which ceased to be a limited partner in YF ART Holdings and no longer has any economic interest therein. The second largest shareholder in the Company is a group of investment funds of the The Goldman Sachs Group, Inc. (Goldman), which owns approximately 16.6% of the Company's common shares as of June 30, 2018. Customer Information The Company’s customers consist primarily of national, regional, and local food manufacturers, distributors, retailers, and food service organizations. For the three and six months ended June 30, 2018 and 2017, one customer accounted for more than 10% of our total revenues. For the three months ended June 30, 2018 and 2017, sales to this customer were $54.0 million and $48.8 million, respectively. For the six months ended June 30, 2018 and 2017, sales to this customer were $106.3 million and $97.1 million, respectively. The substantial majority of this customer's business relates to our third-party managed segment. Of the revenues received from this customer, $49.8 million and $45.2 million represented reimbursements for certain expenses we incurred during the three months ended June 30, 2018 and 2017, respectively, and $98.0 million and $89.8 million for the six months ended June 30, 2018 and 2017, respectively, that were offset by matching expenses included in our third-party managed cost of operations. Basis of Presentation and Principles of Consolidation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the U.S. (GAAP) for interim financial information, and with the rules and regulations of the U.S. Securities and Exchange Commission (SEC). These unaudited condensed consolidated financial statements do not include all disclosures associated with the Company’s consolidated annual financial statements included in its Annual Report on Form 10-K for the year ended December 31, 2017, and, accordingly, should be read in conjunction with the referenced annual report. In the opinion of management, all adjustments (all of which are normal and recurring in nature) considered necessary for a fair presentation have been included. All significant intercompany balances and transactions have been eliminated in consolidation. Operating results for the interim periods presented are not necessarily indicative of the results that may be expected for the full year. Certain prior period amounts have been reclassified to conform to the current period presentation. The Company has also made an immaterial classification correction by reclassifying certain prior period amounts from unearned revenue to the allowance for doubtful accounts. Impairment of Long-Lived Assets During the second quarter of 2018, the Company recorded an impairment charge of $0.7 million related to a domestic warehouse facility in anticipation of a potential future sale of the asset. The estimated fair value of this asset was determined based on ongoing negotiations with prospective buyers in August 2018. During the second quarter of 2017, the Company recorded an impairment charge of $8.8 million as a result of the planned disposal or exit of certain domestic warehouse facilities, including certain idle facilities, with a net book value in excess of their estimated fair value based on third-party appraisals or letters of intent executed with prospective buyers. These impaired assets are or were reported under the Warehouse segment, and the related impairment charges are included in the "Impairment of long-lived assets" line item of the condensed consolidated statements of operations for the three and six months ended June 30, 2018 and 2017, respectively.

General

The Company

Americold Realty Trust is a real estate investment trust (REIT) organized under Maryland law.

During 2010, the Company formed a Delaware limited partnership, Americold Realty Operating Partnership, L.P. (the Operating Partnership), and transferred substantially all of its interests in entities and associated assets and liabilities to the Operating Partnership. This structure is commonly referred to as an umbrella partnership REIT or an UPREIT structure. The REIT is the sole general partner of the Operating Partnership, owning 100% of the common general partnership interest as of June 30, 2018. As the sole general partner of the Operating Partnership, the REIT has full, exclusive and complete responsibility and discretion in the day-to-day management and control of the Operating Partnership.

The Operating Partnership includes numerous qualified REIT subsidiaries (QRSs). Additionally, the Operating Partnership conducts various business activities in the United States (U.S.), Australia, New Zealand, Argentina, and Canada through several wholly owned taxable REIT subsidiaries (TRSs).

Ownership

On January 23, 2018, the Company completed an initial public offering of its common shares, or the IPO, in which the Company issued and sold 33,350,000 of its common shares at $16.00 per share, which generated net proceeds of approximately $493.6 million to the Company. Other significant transactions that occurred in connection with the IPO include the issuance of new senior secured credit facilities, or the 2018 Senior Secured Credit Facilities, which are described in Note 5, and the redemption of all outstanding Series A Preferred Shares and the conversion of all outstanding Series B Preferred Shares, which are described in Note 4.

Prior to the IPO, YF ART Holdings, a partnership among investment funds affiliated with The Yucaipa Companies (Yucaipa) and Fortress Investment Group, LLC (Fortress), owned approximately 100% of the Company’s common shares.

As of June 30, 2018, YF ART Holdings owned approximately 38.3% of the Company's common shares. On March 8, 2018, YF ART Holdings used the proceeds from a margin loan to pay in full the outstanding preferred investment, including the preferred return thereon, of Fortress, which ceased to be a limited partner in YF ART Holdings and no longer has any economic interest therein.

The second largest shareholder in the Company is a group of investment funds of the The Goldman Sachs Group, Inc. (Goldman), which owns approximately 16.6% of the Company's common shares as of June 30, 2018.

Customer Information

The Company’s customers consist primarily of national, regional, and local food manufacturers, distributors, retailers, and food service organizations. For the three and six months ended June 30, 2018 and 2017, one customer accounted for more than 10% of our total revenues. For the three months ended June 30, 2018 and 2017, sales to this customer were $54.0 million and $48.8 million, respectively. For the six months ended June 30, 2018 and 2017, sales to this customer were $106.3 million and $97.1 million, respectively. The substantial majority of this customer's business relates to our third-party managed segment. Of the revenues received from this customer, $49.8 million

and $45.2 million represented reimbursements for certain expenses we incurred during the three months ended June 30, 2018 and 2017, respectively, and $98.0 million and $89.8 million for the six months ended June 30, 2018 and 2017, respectively, that were offset by matching expenses included in our third-party managed cost of operations.

Basis of Presentation and Principles of Consolidation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the U.S. (GAAP) for interim financial information, and with the rules and regulations of the U.S. Securities and Exchange Commission (SEC). These unaudited condensed consolidated financial statements do not include all disclosures associated with the Company’s consolidated annual financial statements included in its Annual Report on Form 10-K for the year ended December 31, 2017, and, accordingly, should be read in conjunction with the referenced annual report. In the opinion of management, all adjustments (all of which are normal and recurring in nature) considered necessary for a fair presentation have been included. All significant intercompany balances and transactions have been eliminated in consolidation. Operating results for the interim periods presented are not necessarily indicative of the results that may be expected for the full year.

Certain prior period amounts have been reclassified to conform to the current period presentation. The Company has also made an immaterial classification correction by reclassifying certain prior period amounts from unearned revenue to the allowance for doubtful accounts.

Impairment of Long-Lived Assets

During the second quarter of 2018, the Company recorded an impairment charge of $0.7 million related to a domestic warehouse facility in anticipation of a potential future sale of the asset. The estimated fair value of this asset was determined based on ongoing negotiations with prospective buyers in August 2018. During the second quarter of 2017, the Company recorded an impairment charge of $8.8 million as a result of the planned disposal or exit of certain domestic warehouse facilities, including certain idle facilities, with a net book value in excess of their estimated fair value based on third-party appraisals or letters of intent executed with prospective buyers. These impaired assets are or were reported under the Warehouse segment, and the related impairment charges are included in the "Impairment of long-lived assets" line item of the condensed consolidated statements of operations for the three and six months ended June 30, 2018 and 2017, respectively.