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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	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Carrying amount of the Company's long-term debt	$ 1,040,064	$ 742,517
Estimated fair value of the Company's long-term debt	1,093,799	756,195
5.125% Senior Notes [Member]
Debt Instrument [Line Items]
Carrying amount of the Company's long-term debt	298,688	297,821
Estimated fair value of the Company's long-term debt	311,100	304,890
5.375% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Carrying amount of the Company's long-term debt	445,247	444,696
Estimated fair value of the Company's long-term debt	482,099	$ 451,305
3.750% Senior Notes [Member]
Debt Instrument [Line Items]
Carrying amount of the Company's long-term debt	296,129
Estimated fair value of the Company's long-term debt	$ 300,600

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
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-Section S99
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-Name Accounting Standards Codification
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- Definition

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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