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Share-Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended 12 Months Ended 24 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2018
Dec. 31, 2019
Jan. 04, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock-based compensation charges $ 4.5 $ 3.2 $ 8.8 $ 8.9      
Accelerated equity award vesting 3.1     3.1      
Unrecognized stock-based compensation expense $ 28.2   $ 28.2        
Unrecognized stock-based compensation expense, period for recognition     2 years 1 month 6 days        
Accelerated equity award vesting (in shares)   100,000          
Compensation from modification of awards   $ 2.9          
Accelerated compensation from executive termination   $ 0.2          
Fair value at grant date of stock option award     $ 0.4 0.4      
Intrinsic value of options exercised     $ 6.7 $ 21.5      
Time-Based Restricted Stock Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of awards granted (in shares)     184,373        
Market-Based Restricted Stock Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of awards granted (in shares)     108,810        
Restricted stock units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Weighted average grant date fair value, awards granted (in USD per share)     $ 30.81        
Weighted average grant date fair value, awards vested (in USD per share)     20.30        
Weighted average grant date fair value, awards forfeited (in USD per share)     25.15        
Weighted average grant date fair value, non-vested awards (in USD per share) $ 24.31   $ 24.31     $ 22.50  
OP units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Aggregate fair value of awards granted     $ 8.3        
2010 Equity Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized (in shares) 3,849,976   3,849,976        
Americold Realty Trust 2017 Equity Incentive Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized (in shares)             9,000,000
Dividends accrued on dividend equivalents on unvested units payable         $ 1.1 $ 1.7  
Trustees | Time-Based Restricted Stock Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of awards granted (in shares)     8,517 12,285      
Vesting period     1 year 1 year      
Trustees | Restricted stock units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of awards granted (in shares) 8,517   8,517 12,285      
Vesting period 1 year   1 year 1 year      
Trustees | OP units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of awards granted (in shares) 16,325   16,325        
Vesting period 1 year   1 year        
Employees | Time-Based Restricted Stock Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of awards granted (in shares)     175,856 247,378      
Employees | Market-Based Restricted Stock Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of awards granted (in shares)     108,810 243,168      
Vesting period     3 years 3 years      
Employees | Restricted stock units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of awards granted (in shares) 1,195 35,042 284,666 490,546      
Vesting period 1 year            
Employees | OP units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of awards granted (in shares)     255,720        
Employees | Minimum | Time-Based Restricted Stock Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period     1 year 1 year      
Employees | Minimum | Restricted stock units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period 1 year   1 year 1 year      
Employees | Minimum | OP units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period     1 year        
Employees | Maximum | Time-Based Restricted Stock Units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period     3 years 3 years      
Employees | Maximum | Restricted stock units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period 3 years   3 years 3 years      
Employees | Maximum | OP units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period     3 years