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Document and Entity Information
Dec. 09, 2022
Cover [Abstract]  
Entity Registrant Name General Motors Co
Amendment Flag false
Entity Central Index Key 0001467858
Current Fiscal Year End Date --12-31
Document Type 8-K
Document Period End Date Dec. 09, 2022
Entity Incorporation State Country Code DE
Entity File Number 001-34960
Entity Tax Identification Number 27-0756180
Entity Address, Address Line One 300 Renaissance Center
Entity Address, City or Town Detroit
Entity Address, State or Province MI
Entity Address, Postal Zip Code 48265-3000
City Area Code (313)
Local Phone Number 667-1500
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, $0.01 par value
Trading Symbol GM
Security Exchange Name NYSE
Entity Emerging Growth Company false