Dividends - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Dividends [Abstract]
Dividends declared and paid	$ 12.5	$ 13.3	$ 38.9	$ 40.3
Dividends declared and paid, per share	$ 0.2	$ 0.2	$ 0.6	$ 0.6