XML 108 R92.htm IDEA: XBRL DOCUMENT
v3.22.4

Long-Term Debt - Long-Term Debt (Parenthetical) (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
2.67% due 2028, floating interest rate at Euribor + 0.589% [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2028 | 2028 |
Interest rate | 2.67% | 2.67% |
Description of floating rate basis | Euribor + 0.589% | Euribor + 0.589% |
Basis spread on floating rate | 0.589% | 0.589% |
1.20% due 2029, floating interest rate at Euribor + 0.564% [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2029 | 2029 |
Interest rate | 1.20% | 1.20% |
Description of floating rate basis | Euribor + 0.564% | Euribor + 0.564% |
Basis spread on floating rate | 0.564% | 0.564% |
1.31% due 2031, floating interest rate at Euribor + 0.583% [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2031 | 2031 |
Interest rate | 1.31% | 1.31% |
Description of floating rate basis | Euribor + 0.583% | Euribor + 0.583% |
Basis spread on floating rate | 0.583% | 0.583% |
0.89% due 2031, floating interest rate at Euribor + 0.660% [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2031 | 2031 |
Interest rate | 0.89% | 0.89% |
Description of floating rate basis | Euribor + 0.660% | Euribor + 0.660% |
Basis spread on floating rate | 0.66% | 0.66% |
3.15% due 2027, floating interest rate at Euribor + 0.690% [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2027 | 2027 |
Interest rate | 3.15% | 3.15% |
Description of floating rate basis | Euribor + 0.690% | Euribor + 0.690% |
Basis spread on floating rate | 0.69% | 0.69% |
1.85% due 2027, floating interest rate at Euribor + 0.550% [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2027 | 2027 |
Interest rate | 1.85% | 1.85% |
Description of floating rate basis | Euribor + 0.550% | Euribor + 0.550% |
Basis spread on floating rate | 0.55% | 0.55% |
2.15% due 2027, floating interest rate at Euribor + 0.850% [Member] | Cassa Depositi e Prestiti SpA ("CDP") [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2027 | 2027 |
Interest rate | 2.15% | 2.15% |
Description of floating rate basis | Euribor + 0.850% | Euribor + 0.850% |
Basis spread on floating rate | 0.85% | 0.85% |
Zero-coupon, due 2025 (Tranche A) [Member] | Senior Unsecured Convertible Bonds |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2025 | 2025 | 2025
Interest rate | 0.00% | 0.00% |
Zero-coupon, due 2027 (Tranche B) [Member] | Senior Unsecured Convertible Bonds |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2027 | 2027 | 2027
Interest rate | 0.00% | 0.00% |
3.86% due 2027, fixed interest rate |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2027 | 2027 |
Interest rate | 3.86% | 3.86% |
3.78% due 2042, fixed interest rate |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2042 | 2042 |
Interest rate | 3.78% | 3.78% |
0.32% (weighted average), due 2023-2028, fixed interest rate [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 0.32% | 0.32% |
0.32% (weighted average), due 2023-2028, fixed interest rate [Member] | Minimum [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2023 | 2023 |
0.32% (weighted average), due 2023-2028, fixed interest rate [Member] | Maximum [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2028 | 2028 |

X
- Definition Debt Instrument Maturity Year + References No definition available. + Details
Name: | stm_DebtInstrumentMaturityYear
Namespace Prefix: | stm_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description of reference rate used for variable rate of debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=stm_FundingProgramLoansDueTwoThousandAndTwentyEightFloatingInterestRateAtEuriborOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=stm_FundingProgramLoansDueTwoThousandAndTwentyNineFloatingInterestRateAtEuriborTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=stm_FundingProgramLoansDueTwoThousandAndThirtyOneFloatingInterestRateAtEuriborOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=stm_FundingProgramLoansDueTwoThousandAndThirtyOneFloatingInterestRateAtEuriborTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=stm_CreditFacilityDueTwoThousandAndTwentySevenFloatingInterestRateAtEuriborOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=stm_CreditFacilityDueTwoThousandAndTwentySevenFloatingInterestRateAtEuriborTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=stm_CreditFacilityDueTwoThousandAndTwentySevenFloatingInterestRateAtEuriborThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=stm_CassaDepositiPrestitiSpACDPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=stm_ZeroCouponDueTwoThousandAndTwentyFiveTrancheAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=stm_SeniorUnsecuredConvertibleBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=stm_ZeroCouponDueTwoThousandAndTwentySevenTrancheBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=stm_FinanceLeasesThreePointEightSixPercentageDueTwoThousandTwentySevenFixedInterestRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=stm_FinanceLeasesThreePointSevenEightPercentageDueTwoThousandFortyTwoFixedInterestRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=stm_ZeroPointThreeTwoPercentageWeightedAverageDueTwoThousandAndTwentyThreeToTwoThousandAndTwentyEightFixedInterestRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |