Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Number of forward contracts included in option contracts available to sell.

+ References

No definition available.

+ Details

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- Definition

Number of option contracts exercised.

+ References

No definition available.

+ Details

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- Definition

Average contractual rate at which a foreign currency can be purchased or sold.

+ References

No definition available.

+ Details

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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

No definition available.

+ Details

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- Definition

For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

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Financial Instruments and Fair Value Measurements - Foreign Currency Contracts Activity (Parenthetical) (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) Contracts	Jun. 30, 2015 USD ($) Contracts	Jun. 30, 2016 EUR (€) $ / €	Jun. 30, 2016 GBP (£) $ / €
Derivative [Line Items]
Number of option contracts exercised			15	13
Gains (losses) from option contracts exercised \| $	$ 0.2	$ 4.0	$ 1.9	$ 6.2
Forward and Option Contracts [Member]
Derivative [Line Items]
Number of forward contracts included in option contracts available to sell			1
Notional value of forward contracts					€ 8,000,000	£ 6,000,000
Weighted average forward rate at June 30 \| $ / €					1.45	1.45