Income Taxes - Summary of Changes in Unrecognized Tax Benefits (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 48.5	$ 50.7	$ 58.8	$ 57.9
Unrecognized tax benefits recognition impact on effective tax rate	$ 38.3