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Shareholders' Equity (Schedule Of Accumulated Other Comprehensive Income (Loss) Activity) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance $ 757.1 $ 591.8
Ending Balance 900.7 757.1
Foreign Currency Translation Adjustments [Member]    
Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance [1] (2.2) 1.0
Other comprehensive (loss) income before reclassifications, net of tax benefit (expense) [1] 1.7 (3.2)
Amounts reclassified from accumulated other comprehensive (loss) [1] 0.0 0.0
Net current period other comprehensive (loss) [1] 1.7 (3.2)
Ending Balance [1] (0.5) (2.2)
Derivative Gain (Loss) [Member]    
Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance [1],[2] (1.1) 0.5
Other comprehensive (loss) income before reclassifications, net of tax benefit (expense) [1],[2] (1.3) 2.5
Amounts reclassified from accumulated other comprehensive (loss) [1],[2] (0.2) (4.1)
Net current period other comprehensive (loss) [1],[2] (1.5) (1.6)
Ending Balance [1],[2] (2.6) (1.1)
Pension And Postretirement Adjustments [Member]    
Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance [1] (106.9) (106.2)
Other comprehensive (loss) income before reclassifications, net of tax benefit (expense) [1] 4.3 2.1
Amounts reclassified from accumulated other comprehensive (loss) [1] 2.6 (2.8)
Net current period other comprehensive (loss) [1] 6.9 (0.7)
Ending Balance [1] (100.0) (106.9)
Accumulated Other Comprehensive (Loss) [Member]    
Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance [1] (110.2) (104.7)
Other comprehensive (loss) income before reclassifications, net of tax benefit (expense) [1] 4.7 1.4
Amounts reclassified from accumulated other comprehensive (loss) [1] 2.4 (6.9)
Net current period other comprehensive (loss) [1] 7.1 (5.5)
Ending Balance [1] $ (103.1) $ (110.2)
[1] Amounts are net of tax.
[2] Amounts include our 50% share of AOCL components from our WAVE joint venture.