v3.25.1
Consolidated Statement of Stockholders' Equity (unaudited) - USD ($)
shares in Millions, $ in Millions
Total
Trinity Stockholders’ Equity
Common Stock
Capital in Excess of Par Value
Retained Earnings
Accumulated other comprehensive income (loss)
Treasury Stock
Noncontrolling Interest
$0.01 Par Value $ 0.01              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Common Stock, Shares, Issued     (81.8)          
Treasury Stock, Common, Shares             0.0  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Dec. 31, 2023 $ 1,275.5 $ 1,037.1 $ 0.8 $ 15.4 $ 1,010.5 $ 11.0 $ (0.6) $ 238.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 27.4 23.7     23.7     3.7
Other comprehensive income 7.5 7.4       7.4   0.1
Cash dividends declared on common stock (1) [1] (23.3) (23.3)     (23.3)      
Distributions to noncontrolling interest (3.0)             (3.0)
Stock-based compensation expense 4.7 4.7   4.7        
Settlement of share-based awards, net (0.3) (0.3)   0.1     (0.4)  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Mar. 31, 2024 $ 1,288.5 1,049.3 $ 0.8 20.2 1,010.9 18.4 $ (1.0) 239.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Common Stock, Dividends, Per Share, Declared $ 0.28              
$0.01 Par Value 0.01              
Common Stock, Shares, Issued     (81.8)          
Treasury Stock, Common, Shares             0.0  
$0.01 Par Value $ 0.01              
Common Stock, Shares, Issued     (81.8)          
Treasury Stock, Common, Shares             0.0  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Dec. 31, 2024 $ 1,307.2 1,058.9 $ 0.8 8.8 1,054.1 (4.2) $ (0.6) 248.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 27.1 22.1     22.1     5.0
Other comprehensive income 0.1 0.0       0.0   0.1
Cash dividends declared on common stock (1) [1] (24.6) (24.6)     (24.6)      
Distributions to noncontrolling interest (6.9)             (6.9)
Stock-based compensation expense 5.3 5.3   5.3        
Settlement of share-based awards, net (0.3) (0.3)   0.0     $ (0.3)  
Treasury Stock, Shares, Acquired             (0.3)  
Treasury Stock, Value, Acquired, Cost Method (8.2) (8.2)         $ (8.2)  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Mar. 31, 2025 $ 1,299.7 $ 1,053.2 $ 0.8 $ 14.1 $ 1,051.6 $ (4.2) $ (9.1) $ 246.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Common Stock, Dividends, Per Share, Declared $ 0.30              
$0.01 Par Value $ 0.01              
Common Stock, Shares, Issued     (81.8)          
Treasury Stock, Common, Shares             0.3  
[1] Dividends of $0.30 and $0.28 per common share for the three months ended March 31, 2025 and 2024, respectively.