Long-Term Debt (5.000% Senior Notes due 2029) - Additional Information (Detail) - 5.000% Senior Notes due 2029 [Member] - USD ($) $ in Millions		9 Months Ended
	Oct. 14, 2020	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Issued Senior Notes	$ 475.0
Debt instrument interest rate	5.00%	5.00%	5.00%
Debt instrument maturity date	Apr. 15, 2029
Interest on the notes		payable semi-annually in arrears on April 15 and October 15 of each year, commencing on April 15, 2021.