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v3.22.4

Leases - Additional Information (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2022
Maximum [Member] |
Lessee Lease Description [Line Items] |
Remaining lease term | 47 years
Minimum [Member] |
Lessee Lease Description [Line Items] |
Remaining lease term | 1 year

X
- Definition Operating lease remaining lease term. + References No definition available. + Details
Name: | stm_OperatingLeaseRemainingLeaseTerm
Namespace Prefix: | stm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
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: |