v3.26.1
Description of Business (Details)
railcar in Thousands, $ in Millions
3 Months Ended 6 Months Ended
Jan. 01, 2026
USD ($)
railcar
locomotive
Jun. 30, 2026
USD ($)
Jun. 30, 2026
USD ($)
Segment
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Asset Acquisition [Line Items]          
Number of business segments | Segment     3    
Joint venture, potential ownership interest to acquire 100.00%        
Exercise of GABX call option   $ 66.2 $ 66.2 $ 0.0  
GABX          
Asset Acquisition [Line Items]          
Joint venture, ownership interest 30.00% 33.50% 33.50%    
Joint venture, potential ownership interest to acquire   100.00% 100.00%    
Brookfield | GABX          
Asset Acquisition [Line Items]          
Joint venture, ownership interest 70.00% 66.50% 66.50%   70.00%
Railcar Acquisition          
Asset Acquisition [Line Items]          
Term loan         $ 2,960.0
Railcar Acquisition | Brookfield          
Asset Acquisition [Line Items]          
Number of assets acquired | railcar 22        
Locomotive Acquisition | Brookfield          
Asset Acquisition [Line Items]          
Number of assets acquired | locomotive 400        
Wells Fargo Bank, N.A. | Railcar Acquisition          
Asset Acquisition [Line Items]          
Number of assets acquired | railcar 101        
Asset acquisition, consideration transferred $ 4,200.0        
Wells Fargo Bank, N.A. | Locomotive Acquisition          
Asset Acquisition [Line Items]          
Number of assets acquired | locomotive 200        
Asset acquisition, consideration transferred $ 30.4