Quarterly report pursuant to Section 13 or 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
Mar. 31, 2015
Dec. 31, 2014
Derivative [Line Items]    
Gross Amounts of Recognized Liabilities $ 8.7us-gaap_DerivativeFairValueOfDerivativeLiability $ 5.4us-gaap_DerivativeFairValueOfDerivativeLiability
Gross Amounts Offset in the Balance Sheet, Derivative Liabilities (7.8)us-gaap_DerivativeLiabilityFairValueGrossAsset (5.4)us-gaap_DerivativeLiabilityFairValueGrossAsset
Net Amounts of Liabilities Presented in the Balance Sheet 0.9us-gaap_DerivativeLiabilities  
Foreign exchange currency contracts [Member]    
Derivative [Line Items]    
Gross Amounts of Recognized Liabilities 8.7us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
5.4us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Gross Amounts Offset in the Balance Sheet, Derivative Liabilities (7.8)us-gaap_DerivativeLiabilityFairValueGrossAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
(5.4)us-gaap_DerivativeLiabilityFairValueGrossAsset
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Net Amounts of Liabilities Presented in the Balance Sheet $ 0.9us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember