v3.25.1
Cover Page - shares
6 Months Ended
Mar. 29, 2025
Apr. 25, 2025
Cover [Abstract]    
Title of 12(b) Security Common Stock, $0.01 par value  
Document Transition Report false  
Document Quarterly Report true  
Entity Incorporation, State or Country Code DE  
Entity Address, Postal Zip Code 01752  
Entity File Number 1-36214  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 29, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Entity Registrant Name HOLOGIC, INC  
Entity Central Index Key 0000859737  
Current Fiscal Year End Date --09-28  
Entity Filer Category Large Accelerated Filer  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Common Stock, Shares Outstanding   222,845,246
Entity Shell Company false  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
City Area Code (508)  
Local Phone Number 263-2900  
Entity Tax Identification Number 04-2902449  
Entity Address, Address Line One 250 Campus Drive,  
Entity Address, City or Town Marlborough,  
Entity Address, State or Province MA  
Trading Symbol HOLX  
Security Exchange Name NASDAQ