Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Notes Payable, Other and Short-Term Borrowings - Carrying Amounts and Estimated Fair Values of Company's Senior Notes (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Jul. 10, 2020	May 27, 2016
Debt Instrument [Line Items]
Carrying Amount	$ 1,044,580	$ 1,043,189
Fair Value	$ 1,040,550	1,108,452
5.125% senior notes
Debt Instrument [Line Items]
Stated interest rate	5.125%				5.125%
5.375% Senior Notes due July 24, 2023
Debt Instrument [Line Items]
Stated interest rate	5.375%
Carrying Amount	$ 448,577	447,911
Fair Value	$ 454,320	475,857
3.750% Senior Notes due October 1, 2024
Debt Instrument [Line Items]
Stated interest rate	3.75%
Carrying Amount	$ 298,146	297,731
Fair Value	$ 293,070	312,105
4.375% Senior Notes due December 15, 2025
Debt Instrument [Line Items]
Stated interest rate	4.375%		4.375%	4.375%
Carrying Amount	$ 297,857	297,547
Fair Value	$ 293,160	$ 320,490