XML 12 R1.htm IDEA: XBRL DOCUMENT v3.22.2
Cover Page - shares
 6 Months Ended
Jun. 30, 2022
Jul. 13, 2022
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2022  
Document Transition Report false  
Entity File Number 001-34960  
Entity Registrant Name GENERAL MOTORS COMPANY  
Entity Incorporation, State or Country Code DE  
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  
City Area Code 313  
Local Phone Number 667-1500  
Entity Central Index Key 0001467858  
Title of 12(b) Security Common Stock, $0.01 par value  
Trading Symbol GM  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   1,458,048,958
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Current Fiscal Year End Date --12-31