v3.26.1
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, 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)         $ (0.3)  
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              
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 47.1              
Other comprehensive income 0.2              
Noncontrolling Interest, Decrease from Deconsolidation 0.0              
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Jun. 30, 2025 1,257.8 1,009.1 $ 0.8 0.0 1,013.0 (4.2) $ (0.5) 248.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Common Stock, Shares, Issued     (81.8)          
Treasury Stock, Common, Shares             0.3  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning 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]                
Net income 20.0 14.1     14.1     5.9
Other comprehensive income 0.1 0.0       0.0   0.1
Cash dividends declared on common stock (1) [1] (24.7) (24.7)     (24.7)      
Distributions to noncontrolling interest (3.8)             (3.8)
Stock-based compensation expense 5.4 5.4   5.4        
Restricted shares, net, (in shares)     (0.9)       (0.3)  
Settlement of share-based awards, net (7.9) (7.9)   0.1     $ (8.0)  
Treasury Stock, Shares, Acquired             (1.2)  
Treasury Stock, Value, Acquired, Cost Method (31.0) (31.0)         $ (31.0)  
Treasury Stock, Shares, Retired     (1.8)       (1.8)  
Retirement of treasury stock 0.0 0.0   (19.6) (28.0)   $ (47.6)  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Jun. 30, 2025 $ 1,257.8 1,009.1 $ 0.8 0.0 1,013.0 (4.2) $ (0.5) 248.7
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     (80.9)          
Treasury Stock, Common, Shares             0.0  
$0.01 Par Value $ 0.01              
Common Stock, Shares, Issued     (79.8)          
Treasury Stock, Common, Shares             0.0  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Dec. 31, 2025 $ 1,145.3 1,077.2 $ 0.8 0.0 1,081.5 (4.2) $ (0.9) 68.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 24.8 24.2     24.2     0.6
Other comprehensive income 5.2 5.2       5.2   0.0
Cash dividends declared on common stock (1) [2] (25.1) (25.1)     (25.1)      
Distributions to noncontrolling interest (1.8)             (1.8)
Stock-based compensation expense 4.9 4.9   4.9        
Settlement of share-based awards, net (0.2) (0.2)         $ (0.2)  
Treasury Stock, Shares, Acquired             (0.2)  
Treasury Stock, Value, Acquired, Cost Method (7.4) (7.4)         $ (7.4)  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Mar. 31, 2026 $ 1,145.7 1,078.8 0.8 4.9 1,080.6 1.0 (8.5) 66.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Common Stock, Dividends, Per Share, Declared $ 0.31              
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Dec. 31, 2025 $ 1,145.3 1,077.2 0.8 0.0 1,081.5 (4.2) (0.9) 68.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 123.1              
Other comprehensive income 12.2              
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Jun. 30, 2026 1,145.7 1,143.1 $ 0.8 0.0 1,135.2 8.0 $ (0.9) 2.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Common Stock, Shares, Issued     (79.8)          
Treasury Stock, Common, Shares             0.2  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Mar. 31, 2026 1,145.7 1,078.8 $ 0.8 4.9 1,080.6 1.0 $ (8.5) 66.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 98.3 98.3     98.3     0.0
Other comprehensive income 7.0 7.0       7.0   0.0
Cash dividends declared on common stock (1) [2] (24.0) (24.0)     (24.0)      
Noncontrolling Interest, Decrease from Deconsolidation 64.3             64.3
Stock-based compensation expense 5.5 5.5   5.5        
Restricted shares, net, (in shares)     (0.8)       (0.3)  
Settlement of share-based awards, net (9.1) (9.1)   0.2     $ (9.3)  
Treasury Stock, Shares, Acquired             (0.4)  
Treasury Stock, Value, Acquired, Cost Method (13.4) (13.4)         $ (13.4)  
Treasury Stock, Shares, Retired     (0.9)       (0.9)  
Retirement of treasury stock 0.0 0.0   (10.6) (19.7)   $ (30.3)  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Jun. 30, 2026 $ 1,145.7 $ 1,143.1 $ 0.8 $ 0.0 $ 1,135.2 $ 8.0 $ (0.9) $ 2.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Common Stock, Dividends, Per Share, Declared $ 0.31              
$0.01 Par Value $ 0.01              
Common Stock, Shares, Issued     (79.7)          
Treasury Stock, Common, Shares             0.0  
[1] Dividends of $0.30 per common share for all periods presented in 2025.
[2] Dividends of $0.31 per common share for all periods in 2026.