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Components of Debt (Parenthetical) (Detail)	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017
0.25% Convertible Senior Notes Due 2022
Line Of Credit Facility [Line Items]
Debt instrument, interest rate	0.25%
London Interbank Offered Rate (LIBOR) | Term Loans
Line Of Credit Facility [Line Items]
Debt instrument, rate added on variable rate	1.75%	1.50%
London Interbank Offered Rate (LIBOR) | Line of credit
Line Of Credit Facility [Line Items]
Debt instrument, rate added on variable rate	1.75%	1.50%
London Interbank Offered Rate (LIBOR) | Yen denominated line of credit
Line Of Credit Facility [Line Items]
Debt instrument, rate added on variable rate	1.75%

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

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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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- Definition

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

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