Operations and Summary of Significant Accounting Policies (Summary of Interest Expense, Net) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Interest expense	$ 46.0	$ 25.4	$ 24.9
Interest income	(33.0)	(18.7)	(9.9)
Interest expense, net	$ 13.0	$ 6.7	$ 15.0