Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 28, 2019
Revenues:
Revenue from product and services	$ 5,632.3	$ 3,776.4	$ 3,367.3
Costs of revenues:
Amortization of acquired intangible assets	276.7	253.2	318.5
Impairment of intangible assets and equipment	0.0	25.8	578.7
Gross Profit	3,795.8	2,227.5	1,170.9
Operating expenses:
Research and development	276.3	222.5	232.2
Selling and marketing	561.2	484.6	564.9
General and administrative	433.2	355.7	332.3
Amortization of acquired intangible assets	42.2	39.7	52.0
Impairment of intangible assets and equipment	0.0	4.4	106.7
Contingent consideration – fair value adjustments	(6.7)	0.3	0.0
Restructuring and divestiture charges	9.3	15.3	6.6
Operating expenses	1,315.5	1,122.5	1,294.7
Income (loss) from operations	2,480.3	1,105.0	(123.8)
Interest income	1.4	4.3	4.6
Interest expense	(93.6)	(116.5)	(140.8)
Debt extinguishment losses	(21.6)	0.0	(0.8)
Other income (expense), net	(5.4)	9.1	3.1
Income (loss) before income taxes	2,361.1	1,001.9	(257.7)
Provision (benefit) for income taxes	491.4	(108.6)	(54.1)
Net income (loss)	1,869.7	1,110.5	(203.6)
Net loss attributable to noncontrolling interest	(1.8)	(4.7)
Net income (loss) attributable to Hologic	$ 1,871.5	$ 1,115.2	$ (203.6)
Net income (loss) per common share attributable to Hologic:
Basic (in dollars per share)	$ 7.28	$ 4.24	$ (0.76)
Diluted (in dollars per share)	$ 7.21	$ 4.21	$ (0.76)
Weighted average number of shares outstanding:
Basic (in shares)	257,046	262,727	269,413
Diluted (in shares)	259,706	264,613	269,413
Product
Revenues:
Revenue from product and services	$ 4,967.3	$ 3,227.0	$ 2,771.3
Costs of revenues:
Cost of goods and services sold	1,205.1	953.7	948.7
Service
Revenues:
Revenue from product and services	665.0	549.4	596.0
Costs of revenues:
Cost of goods and services sold	$ 354.7	$ 316.2	$ 350.5