v3.25.2
COVER
6 Months Ended
Jun. 30, 2025
Cover [Abstract]  
Document Type 6-K
Document Period End Date Jun. 30, 2025
Entity Registrant Name Legend Biotech Corporation
Entity Central Index Key 0001801198
Document Fiscal Year Focus 2025
Document Fiscal Period Focus Q2
Current Fiscal Year End Date --12-31
Amendment Flag false