Summary of Notional Amounts of Outstanding Foreign Exchange Forwards, Net Investment Hedging (Detail) In Millions, unless otherwise specified	Mar. 31, 2014 Foreign Currency Forward Contracts To Sell Euros for U S Dollars [Member] EUR (€)	Dec. 31, 2013 Foreign Currency Forward Contracts To Sell Euros for U S Dollars [Member] EUR (€)	Mar. 31, 2014 Foreign Currency Forward Contracts To Sell Japanese Yen For US Dollars [Member] JPY (¥)	Dec. 31, 2013 Foreign Currency Forward Contracts To Sell Japanese Yen For US Dollars [Member] JPY (¥)
Derivative [Line Items]
Contracts to sell foreign currencies	€ 50.0	€ 50.0	¥ 19,700.0	¥ 19,700.0

Aggregate notional amount of all derivatives designated as a hedge of a net investment in a foreign operation. The notional amount relates to a number of currency units, shares, bushels, pounds, or other units specified in a derivative instrument.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

Name:	us-gaap_NotionalAmountOfDerivativeInstrumentsDesignatedAsNetInvestmentHedges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant