Income Taxes - Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Beginning Balance	$ 3.2	$ 4.3
Lapse of statute		(3.6)
Decrease in balances related to prior year tax positions	(2.1)
Interest accrued	0.6	0.1
Increase in balances related to prior year tax positions	1.2	2.4
Ending Balance	$ 2.9	$ 3.2