XML 22 R124.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Financial Instruments and Risk Management - Notional Amounts of Outstanding Derivative Instruments (Detail) In Millions, unless otherwise specified | Dec. 31, 2014 Hedge on R&D and Other Operating Expense Forecasted [Member] Foreign Exchange Forward [Member] EUR (€) | Dec. 31, 2014 Hedge on R&D and Other Operating Expense Forecasted [Member] Collars [Member] EUR (€) | Dec. 31, 2014 Hedge on Manufacturing Cost Forecast [Member] Foreign Exchange Forward [Member] EUR (€) | Dec. 31, 2014 Hedge on Manufacturing Cost Forecast [Member] Foreign Exchange Forward [Member] SGD | Dec. 31, 2014 Hedge on Manufacturing Cost Forecast [Member] Collars [Member] EUR (€)
--- | --- | --- | --- | --- | ---
Derivative [Line Items] |  |  |  |  |
Notional amount | € 211invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = stm_HedgeOnRdAndOtherOperatingExpenseForecastedMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeForwardMember | € 221invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = stm_HedgeOnRdAndOtherOperatingExpenseForecastedMember / us-gaap_DerivativeInstrumentRiskAxis = stm_CurrencyCollarsMember | € 294invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = stm_HedgeOnManufacturingCostForecastMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeForwardMember | 136invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = stm_HedgeOnManufacturingCostForecastMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeForwardMember | € 331invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = stm_HedgeOnManufacturingCostForecastMember / us-gaap_DerivativeInstrumentRiskAxis = stm_CurrencyCollarsMember

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References 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 + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration