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Operations	12 Months Ended
Operations	Sep. 24, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Operations	Operations Hologic, Inc. (the “Company” or “Hologic”) develops, manufactures and supplies premium diagnostics products, medical imaging systems and surgical products with an emphasis on women's health. The Company operates in four segments: Diagnostics, Breast Health, GYN Surgical and Skeletal Health.