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Stock-Based Compensation (Share-Based Payment Arrangement, Expensed and Capitalized, Amount) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Employee Stock Option      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Share-Based Payment Arrangement, Expense $ 4.0 $ 4.0 $ 4.1
Share-Based Payment Arrangement, Expense, Tax Benefit 1.0 1.0 1.1
Share-Based Payment Arrangement, Amount Capitalized 2.0 1.9 1.9
Restricted Stock [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Share-Based Payment Arrangement, Expense 25.9 24.4 22.2
Share-Based Payment Arrangement, Expense, Tax Benefit 6.4 6.2 5.7
Share-Based Payment Arrangement, Amount Capitalized 13.2 11.3 9.7
Long Term Performance Unit [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Share-Based Payment Arrangement, Expense 11.4 12.0 11.1
Share-Based Payment Arrangement, Expense, Tax Benefit 2.8 3.1 2.8
Share-Based Payment Arrangement, Amount Capitalized 5.9 5.7 5.2
Restricted Stock Units (RSUs) [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Share-Based Payment Arrangement, Expense 1.8 2.5 2.8
Share-Based Payment Arrangement, Expense, Tax Benefit 0.5 0.6 0.7
Share-Based Payment Arrangement, Amount Capitalized $ 1.0 $ 1.2 $ 1.2