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v3.22.4

Other Payables and Accrued Liabilities - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2022 USD ($)
Payables And Accruals [Abstract] |
Deferred and contingent consideration paid | $ 25,000,000
Provision for penalties | $ 0

X
- Definition Payment for deferred and contingent consideration on business acquisitions. + References No definition available. + Details
Name: | stm_PaymentForDeferredAndContingentConsiderationOnBusinessAcquisitions
Namespace Prefix: | stm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Provision for penalties. + References No definition available. + Details
Name: | stm_ProvisionForPenalties
Namespace Prefix: | stm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_PayablesAndAccrualsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration