v3.26.1
Cover
12 Months Ended
Dec. 31, 2025
Entity Information [Line Items]  
Document Type 11-K
Amendment Flag false
Entity Registrant Name ERICSSON LM TELEPHONE CO
Entity Central Index Key 0000717826
EBP 006 [Member]  
Entity Information [Line Items]  
Document Type 11-K
Amendment Flag false
Document Period End Date Dec. 31, 2025
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
Entity Registrant Name ERICSSON LM TELEPHONE CO
Entity Central Index Key 0000717826
Current Fiscal Year End Date --12-31