Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Offsetting of Derivative Liabilities (Detail)

v2.4.1.9
Fair Value Measurements - Offsetting of Derivative Liabilities (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Derivative [Line Items]    
Gross Amounts of Recognized Liabilities $ 5.4us-gaap_DerivativeFairValueOfDerivativeLiability $ 5.1us-gaap_DerivativeFairValueOfDerivativeLiability
Gross Amounts Offset in the Balance Sheet, Derivative Liabilities (5.4)us-gaap_DerivativeLiabilityFairValueGrossAsset (3.0)us-gaap_DerivativeLiabilityFairValueGrossAsset
Net Amounts of Liabilities Presented in the Balance Sheet   2.1us-gaap_DerivativeLiabilities
Foreign exchange currency contracts [Member]    
Derivative [Line Items]    
Gross Amounts of Recognized Liabilities 5.4us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
5.1us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Gross Amounts Offset in the Balance Sheet, Derivative Liabilities (5.4)us-gaap_DerivativeLiabilityFairValueGrossAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
(3.0)us-gaap_DerivativeLiabilityFairValueGrossAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Net Amounts of Liabilities Presented in the Balance Sheet   $ 2.1us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember