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Cover Page - shares
 12 Months Ended
Dec. 31, 2022
Mar. 31, 2023
Document Information [Line Items]    
Document Type 20-F  
Amendment Flag false  
Document Period End Date Dec. 31, 2022  
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus FY  
Document Registration Statement false  
Document Annual Report true  
Document Transition Report false  
Document Shell Company Report false  
Entity Registrant Name AMERICA MOVIL SAB DE CV/  
Entity Central Index Key 0001129137  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer Yes  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Voluntary Filers No  
Entity Interactive Data Current Yes  
Entity Address, Country MX  
ICFR Auditor Attestation Flag true  
Document Accounting Standard International Financial Reporting Standards  
Entity Address, Address Line One Lago Zurich 245  
Entity Address, Address Line Two Plaza Carso / Edificio Telcel  
Entity Address, Address Line Three Colonia Ampliación Granada,  
Entity Address, City or Town Mexico City  
Entity Address, Postal Zip Code 11529  
Entity File Number 1-16269  
Entity Incorporation, State or Country Code O5  
Auditor Name Mancera, S.C.  
Auditor Firm ID 1284  
Auditor Location Mexico City, Mexico  
Business Contact [Member]    
Document Information [Line Items]    
Entity Address, Country MX  
City Area Code 5255  
Local Phone Number 2581-3700  
Contact Personnel Name Daniela Lecuona Torras  
Contact Personnel Email Address daniela.lecuona@americamovil.com  
Contact Personnel Fax Number 2581-4422  
Entity Address, Address Line One Lago Zurich 245  
Entity Address, Address Line Two Plaza Carso / Edificio Telcel, Piso 16  
Entity Address, Address Line Three Colonia Ampliación Granada  
Entity Address, City or Town Mexico City  
Entity Address, Postal Zip Code 11529  
AA Shares [member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding 20,555,000,000  
A Shares [member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding 488,000,000  
L Shares [member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding 42,282,000,000  
B Shares [member]    
Document Information [Line Items]    
Trading Symbol AMX  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   63,224,000,000
Title of 12(b) Security American Depositary Shares, each representing 20 B Shares, without par value  
3.625% Senior Notes Due 2029 [Member]    
Document Information [Line Items]    
Trading Symbol AMX29  
Security Exchange Name NYSE  
Title of 12(b) Security 3.625% Senior Notes Due 2029  
2.875% Senior Notes Due 2030 [Member]    
Document Information [Line Items]    
Trading Symbol AMX30  
Security Exchange Name NYSE  
Title of 12(b) Security 2.875% Senior Notes Due 2030  
4.700% Senior Notes Due 2032 [Member]    
Document Information [Line Items]    
Trading Symbol AMX32  
Security Exchange Name NYSE  
Title of 12(b) Security 4.700% Senior Notes Due 2032  
6.375% Senior Notes Due 2035 [Member]    
Document Information [Line Items]    
Trading Symbol AMX35  
Security Exchange Name NYSE  
Title of 12(b) Security 6.375% Senior Notes Due 2035  
6.125% Senior Notes Due 2037 [Member]    
Document Information [Line Items]    
Trading Symbol AMX37  
Security Exchange Name NYSE  
Title of 12(b) Security 6.125% Senior Notes Due 2037  
6.125% Senior Notes Due 2040 [Member]    
Document Information [Line Items]    
Trading Symbol AMX40  
Security Exchange Name NYSE  
Title of 12(b) Security 6.125% Senior Notes Due 2040  
4.375% Senior Notes Due 2042 [Member]    
Document Information [Line Items]    
Trading Symbol AMX42  
Security Exchange Name NYSE  
Title of 12(b) Security 4.375% Senior Notes Due 2042  
4.375% Senior Notes Due 2049 [Member]    
Document Information [Line Items]    
Trading Symbol AMX49  
Security Exchange Name NYSE  
Title of 12(b) Security 4.375% Senior Notes Due 2049