Other Financial Information - Other Expense, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Other Financial Information [Abstract]
Interest income	$ 9.5	$ 2.6
Interest expense	(19.2)	(12.5)
Gain (loss) on investments, net	0.9	(3.3)
Other	0.2	0.3
Other expense, net	$ (8.6)	$ (12.9)