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Notes Payable, Other and Short-Term Borrowings - Carrying Amounts and Estimated Fair Values of Company's Senior Notes (Parenthetical) (Detail)	Dec. 31, 2020	Aug. 14, 2020	Jul. 10, 2020	Dec. 31, 2019	Sep. 27, 2019	Jul. 24, 2018
5.125% Senior Notes [Member]
Debt Instrument [Line Items]
Stated interest rate	5.125%	5.125%		5.125%
5.375% Senior Notes [Member]
Debt Instrument [Line Items]
Stated interest rate	5.375%			5.375%		5.375%
4.375% Senior Notes [Member]
Debt Instrument [Line Items]
Stated interest rate	4.375%		4.375%	4.375%
3.750% Senior Notes [Member]
Debt Instrument [Line Items]
Stated interest rate	3.75%			3.75%	3.75%

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

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+ References

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