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Guarantor and Nonguarantor Financial Statements - Condensed Consolidating Balance Sheet (Parenthetical) (Detail)	Dec. 31, 2016	Dec. 31, 2015	Aug. 13, 2015	Dec. 31, 2014	Dec. 12, 2014	Sep. 26, 2014
5.00% Senior Notes [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Interest rate of long-term debt	5.00%	5.00%
5.25% Senior Notes [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Interest rate of long-term debt	5.25%	5.25%		5.25%	5.25%	5.25%
4.875% Senior Notes [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Interest rate of long-term debt	4.875%	4.875%	4.875%

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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.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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=6877327&loc=d3e13212-122682

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