XML 73 R83.htm IDEA: XBRL DOCUMENT v2.4.1.9

Long-Term Debt - Long-Term Debt (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014	Jul. 03, 2014
0.25% due 2014, floating interest rate at Libor + 0.017% [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2014
Interest rate	0.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDue2014FloatingInterestRateAtLiborOneMember
Description of floating rate basis	Libor + 0.017%
Basis spread on floating rate	0.017%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDue2014FloatingInterestRateAtLiborOneMember
0.26% due 2015, floating interest rate at Libor + 0.026% [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2015
Interest rate	0.26%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDue2015FloatingInterestRateAtLiborTwoMember
Description of floating rate basis	Libor + 0.026%
Basis spread on floating rate	0.026%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDue2015FloatingInterestRateAtLiborTwoMember
0.28% due 2016, floating interest rate at Libor + 0.052% [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2016
Interest rate	0.28%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDue2016FloatingInterestRateAtLiborThreeMember
Description of floating rate basis	Libor + 0.052%
Basis spread on floating rate	0.052%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDue2016FloatingInterestRateAtLiborThreeMember
0.73% due 2016, floating interest rate at Libor + 0.477% [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2016
Interest rate	0.73%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDue2016FloatingInterestRateAtLiborFourMember
Description of floating rate basis	Libor + 0.477%
Basis spread on floating rate	0.477%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDue2016FloatingInterestRateAtLiborFourMember
0.61% due 2016, floating interest rate at Libor + 0.373% [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2016
Interest rate	0.61%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDue2016FloatingInterestRateAtLiborFiveMember
Description of floating rate basis	Libor + 0.373%
Basis spread on floating rate	0.373%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDue2016FloatingInterestRateAtLiborFiveMember
1.43% due 2020, floating interest rate at Libor + 1.199% [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2020
Interest rate	1.43%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDueTwoThousandAndTwentyFloatingInterestRateAtLiborSixMember
Description of floating rate basis	Libor + 1.199%
Basis spread on floating rate	1.199%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDueTwoThousandAndTwentyFloatingInterestRateAtLiborSixMember
1.29% due 2020, floating interest rate at Libor + 1.056% [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2020
Interest rate	1.29%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDueTwoThousandAndTwentyFloatingInterestRateAtLiborSevenMember
Description of floating rate basis	Libor + 1.056%
Basis spread on floating rate	1.056%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDueTwoThousandAndTwentyFloatingInterestRateAtLiborSevenMember
1.00% due 2020, floating interest rate at Euribor + 0.917% [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2020
Interest rate	1.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDueTwoThousandAndTwentyFloatingInterestRateAtLiborEightMember
Description of floating rate basis	Libor + 0.917%
Basis spread on floating rate	0.917%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDueTwoThousandAndTwentyFloatingInterestRateAtLiborEightMember
0.85% due 2021, floating interest rate at Libor + 0.525% [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2021
Interest rate	0.85%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDueTwoThousandAndTwentyOneFloatingInterestRateAtLiborNineMember
Description of floating rate basis	Libor + 0.525%
Basis spread on floating rate	0.525%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDueTwoThousandAndTwentyOneFloatingInterestRateAtLiborNineMember
0.90% due 2021, floating interest rate at Libor + 0.572% [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2021
Interest rate	0.90%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDueTwoThousandAndTwentyOneFloatingInterestRateAtLiborTenMember
Description of floating rate basis	Libor + 0.572%
Basis spread on floating rate	0.572%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = stm_FundingProgramLoansDueTwoThousandAndTwentyOneFloatingInterestRateAtLiborTenMember
Zero Coupon due 2019 (Tranche A) [Member]
Debt Instrument [Line Items]
Interest rate	1.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_ZeroCouponDueTwoThousandNineteenTrancheAMember
1.0% due 2021 (Tranche B) [Member]
Debt Instrument [Line Items]
Interest rate	1.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_OnePointZeroPercentageDueTwoThousandTwentyOneTrancheBMember
0.43% (weighted average), due 2014-2023, fixed interest rate [Member]
Debt Instrument [Line Items]
Interest rate	0.43%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_OtherFundingProgramWeightedAverageDueTwoThousandAndFourteenToTwoThousandAndTwentyThreeFixedInterestRateMember
1.95% (weighted average), due 2017, fixed interest rate [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2017
Interest rate	1.95%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_OtherLongTermLoansMember
0.67% (weighted average), due 2018, fixed interest rate [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2018
Interest rate	0.67%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_OtherLongTermLoansWeightedAverageDueTwoThousandAndEighteenFixedInterestRateMember
0.87% (weighted average), due 2020, fixed interest rate [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2020
Interest rate	0.87%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_OtherLongTermLoansWeightedAverageDueTwoThousandAndTwentyFixedInterestRateMember
6.65% (weighted average), due 2015-2017, fixed interest rate [Member]
Debt Instrument [Line Items]
Interest rate	6.65%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_CapitalLeasesWeightedAverageDueToTwoThousandAndFifteenToTwoThousandAndSeventeenMember
Senior Unsecured Convertible Bonds [Member] | Zero Coupon due 2019 (Tranche A) [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2019
Interest rate	0.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_ZeroCouponDueTwoThousandNineteenTrancheAMember / us-gaap_LongtermDebtTypeAxis = stm_SeniorUnsecuredConvertibleBondsMember	0.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_ZeroCouponDueTwoThousandNineteenTrancheAMember / us-gaap_LongtermDebtTypeAxis = stm_SeniorUnsecuredConvertibleBondsMember
Senior Unsecured Convertible Bonds [Member] | 1.0% due 2021 (Tranche B) [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2021
Interest rate	1.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_OnePointZeroPercentageDueTwoThousandTwentyOneTrancheBMember / us-gaap_LongtermDebtTypeAxis = stm_SeniorUnsecuredConvertibleBondsMember	1.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = stm_OnePointZeroPercentageDueTwoThousandTwentyOneTrancheBMember / us-gaap_LongtermDebtTypeAxis = stm_SeniorUnsecuredConvertibleBondsMember
Minimum [Member] | 0.43% (weighted average), due 2014-2023, fixed interest rate [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2014
Minimum [Member] | 6.65% (weighted average), due 2015-2017, fixed interest rate [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2015
Maximum [Member] | 0.43% (weighted average), due 2014-2023, fixed interest rate [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2023
Maximum [Member] | 6.65% (weighted average), due 2015-2017, fixed interest rate [Member]
Debt Instrument [Line Items]
Long-term debt maturity date	2017

X

- Definition

Debt Instrument Maturity Year

+ References

No definition available.

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- Definition

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+ References

No definition available.

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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