Revenue - Revenue by Type (Details) - USD ($)	3 Months Ended
	Dec. 25, 2021	Dec. 26, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 1,471,100,000	$ 1,609,800,000
Contract with Customer, Liability, Revenue Recognized	56,400,000	50,700,000
Disposables
Disaggregation of Revenue [Line Items]
Revenues	1,106,300,000	1,263,400,000
Capital equipment, components and software
Disaggregation of Revenue [Line Items]
Revenues	197,000,000.0	192,000,000.0
Service
Disaggregation of Revenue [Line Items]
Revenues	162,800,000	137,100,000
Other
Disaggregation of Revenue [Line Items]
Revenues	$ 5,000,000.0	$ 17,300,000