Credit Agreements and Short-term Financing - Additional Information (Detail) - USD ($)		12 Months Ended
	Aug. 09, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Line Of Credit Facility [Line Items]
Interest expense on short-term debt		$ 1,400,000	$ 700,000	$ 400,000
Outstanding overdrafts payable		0
Collateralized Agreements [Member]
Line Of Credit Facility [Line Items]
Interest expense on borrowings		100,000	100,000	0
Maximum available borrowings to subsidiary under agreement		$ 500,000,000
Interest rate, stated percentage		1.00%
Outstanding borrowings under agreement		$ 0
Unused borrowing capacity, amount under agreement		$ 500,000,000
Collateralized Borrowing Agreement [Member]
Line Of Credit Facility [Line Items]
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]		us-gaap:BaseRateMember
2021 Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Interest expense on borrowings			100,000	$ 300,000
Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Period of credit agreement	3 years
Sub-limit for swingline loans	$ 380,000,000
Interest expense on borrowings		$ 200,000	$ 100,000
Line of Credit Facility, Description		On August 9, 2023, the Company entered into a new three-year revolving credit facility (the “Credit Agreement”) provided by a syndicate of lenders and JPMorgan Chase Bank, N.A., as administrative agent
Revolving Credit Facility [Member] | Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Revolving loans and letters of credit	$ 750,000,000
Expiration period of credit agreement	Aug. 09, 2026
Period of credit agreement		364 days
Letter of credit outstanding		$ 100,000
Amount available under credit agreement		749,900,000
Additional borrowings under credit agreement		$ 375,000,000
Standby Letters of Credit [Member] | Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Sub-limit for letter of credit	$ 5,000,000