Debt (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Debt Disclosure [Line Items]
Long-term debt, gross value	$ 755,000,000		$ 755,000,000		$ 755,000,000
Weighted-average interest rate over time	5.88%	1.90%	5.72%	1.63%
Weighted-average interest rate at point in time	6.22%		6.22%
Consolidated net leverage ratio	3.50		3.50
Consolidated net leverage ratio increased	4.00		4.00
Qualified acquisition amount	$ 250,000,000		$ 250,000,000
Unsecured long-term debt, noncurrent	753,700,000		753,700,000		753,600,000
Unamortized debt discount and issuance costs	1,300,000		1,300,000		1,400,000
Revolving credit facility
Debt Disclosure [Line Items]
Line of credit, maximum borrowing capacity	500,000,000		500,000,000
Foreign currency borrowings sublimit	150,000,000		150,000,000
Outstanding borrowings under the credit agreement	0		0		$ 0
Letters of credit
Debt Disclosure [Line Items]
Line of credit, maximum borrowing capacity	$ 50,000,000		$ 50,000,000
Base rate
Debt Disclosure [Line Items]
Debt instrument, basis spread overnight bank funding rate			0.50%
Debt instrument, basis spread on SOFR rate			1.00%