Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Notes Payable, Other and Short-Term Borrowings - Carrying Amounts and Estimated Fair Values of Company's Senior Notes (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jul. 10, 2020	May 27, 2016
Debt Instrument [Line Items]
Carrying Amount	$ 1,041,813	$ 1,296,081
Fair Value	$ 1,128,735	1,376,311
5.125% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	5.125%			5.125%
Carrying Amount	$ 0	255,570
Fair Value	$ 0	258,067
5.375% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	5.375%
Carrying Amount	$ 447,244	446,577
Fair Value	$ 486,315	486,747
3.750% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	3.75%
Carrying Amount	$ 297,317	296,903
Fair Value	$ 317,250	314,031
4.375% Senior Notes
Debt Instrument [Line Items]
Stated interest rate	4.375%		4.375%
Carrying Amount	$ 297,252	297,031
Fair Value	$ 325,170	$ 317,466