Other Financial Information - Other Expense, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Financial Information [Abstract]
Interest income	$ 19.6	$ 14.9	$ 36.3
Interest expense	(58.6)	(50.8)	(77.0)
Gain on investments, net	8.8	17.6	13.3
Other	1.6	1.5	(5.5)
Other expense, net	$ (28.6)	$ (16.8)	$ (32.9)