Operations and Summary of Significant Accounting Policies (Interest Expense, Net) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounting Policies [Abstract]
Interest expense	$ 159.3	$ 68.8	$ 46.0
Interest income	(66.3)	(64.2)	(33.0)
Interest expense, net	$ 93.0	$ 4.6	$ 13.0