Stock-Based Compensation (Schedule of Share-Based Payment Arrangement, Expensed and Capitalized, Amount) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Employee Stock Option
Share-Based Payment Arrangement, Additional Disclosure [Abstract]
Share-Based Payment Arrangement, Expense	$ 1.1	$ 1.1
Share-Based Payment Arrangement, Expense, Tax Benefit	0.3	0.3
Share-Based Payment Arrangement, Amount Capitalized	0.5	0.5
Other Equity Awards [Member]
Share-Based Payment Arrangement, Additional Disclosure [Abstract]
Share-Based Payment Arrangement, Expense	9.9	7.7
Share-Based Payment Arrangement, Expense, Tax Benefit	2.5	2.0
Share-Based Payment Arrangement, Amount Capitalized	$ 4.5	$ 3.2