XML 9 R1.htm IDEA: XBRL DOCUMENT v3.24.3
Cover
9 Months Ended
Sep. 30, 2024
Cover [Abstract]  
Document Type 6-K
Document Fiscal Year Focus 2024
Entity Registrant Name ICON plc
Amendment Flag false
Document Fiscal Period Focus Q3
Entity Central Index Key 0001060955
Current Fiscal Year End Date --12-31
Document Period End Date Sep. 30, 2024