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Shareholders' Equity (Schedule Of Activity In Our Various Shareholders' Equity) (Details) - USD ($)
shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
BALANCE $ 2,244.3    
Net income 979.1 $ 369.8 $ 866.8
Share-based compensation cost (25.2) (27.7) (27.3)
Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits (24.5) (10.9) (10.8)
Net other comprehensive income (loss) 26.7 9.0 10.5
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation (3.6) (29.9) (5.4)
Foreign currency translation adjustments 2.2 (1.9) (0.3)
Treasury Stock, Value, Acquired, Cost Method 100.0 125.0 $ 200.0
BALANCE $ 3,171.7 $ 2,244.3  
Non-U.S. Subsidiary      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Subsidiary, Ownership Percentage, Noncontrolling Owner   51.00%  
Common Stock [Member]      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
BALANCE, shares 76.2 75.4 75.2
BALANCE $ 0.8 $ 0.8 $ 0.8
Shares Issued Under Share Based Compensation Plans, Shares 0.2 0.8 0.2
BALANCE, shares 76.4 76.2 75.4
BALANCE $ 0.8 $ 0.8 $ 0.8
Additional Paid-In Capital [Member]      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
BALANCE 1,113.3 1,119.8 1,097.9
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests   4.1  
Noncontrolling Interest, Increase from Sale of Parent Equity Interest   (8.4)  
BALANCE 1,134.9 1,113.3 1,119.8
Retained Earnings [Member]      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
BALANCE 1,398.9 1,025.5 160.1
Net income 982.8 373.4 865.4
BALANCE 2,381.7 1,398.9 1,025.5
AOCI [Member]      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
BALANCE 34.2 25.2 14.7
Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits 24.5 10.9 10.8
Foreign currency translation adjustments 2.2 (1.9) (0.3)
BALANCE 60.9 34.2 25.2
Noncontrolling Interest [Member]      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
BALANCE 5.8 9.4 8.0
Net income (3.7) (3.6) 1.4
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests   (8.4)  
Noncontrolling Interest, Increase from Sale of Parent Equity Interest   8.4  
BALANCE 2.1 5.8 9.4
Warrant      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
BALANCE 16.4 16.4 16.4
BALANCE 16.4 16.4 16.4
Treasury Stock, Common      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
BALANCE (325.1) (200.1) 0.0
Treasury Stock, Value, Acquired, Cost Method (100.0) (125.0) (200.1)
BALANCE $ (425.1) $ (325.1) $ (200.1)