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Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities (Details 2) (Foreign Exchange Forward [Member], Designated as Hedging Instrument [Member]) In Millions, unless otherwise specified | Sep. 30, 2013 Foreign Exchange Forward Contract, USD To GBP Exchange, Various Due September 2013 to December 2013 [Member] USD ($) | Sep. 30, 2013 Foreign Exchange Forward Contract, USD To GBP Exchange, Various Due January 2014 to December 2014 [Member] USD ($) | Sep. 30, 2013 Foreign Exchange Forward Contract, Euro To GBP Exchange, Various Due October 2013 to December 2013 [Member] EUR (€) | Jun. 30, 2013 Foreign Exchange Forward Contract, Euro To GBP Dollar Exchange, Various Due January 2014 to December 2014 [Member] EUR (€)
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Derivative [Line Items] |  |  |  |
Notional amount of foreign currency derivatives | $ 0.50 | $ 1.80 | € 0.12 | € 0.48
Derivative, average foreign currency option strike price | 1.58 | 1.57 | 1.24 | 1.16

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- Definition Contractual rate at which a foreign currency can be purchased or sold. + References No definition available. + Details
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- Details
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- Definition Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 + Details
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