Acquisitions - Intangible Assets Acquired (Details) - USD ($) $ in Millions					12 Months Ended
	Feb. 11, 2020	Nov. 15, 2018	Apr. 06, 2018	Oct. 05, 2017	Sep. 30, 2020
Customer Relationships | Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life					3 years
Customer Relationships | Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life					14 years
Completed Technology | Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life					3 years
Completed Technology | Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life					15 years
RURO, Inc.
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of intangible assets	10 years 3 months 18 days
RURO, Inc. | Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 2.9
Useful life	12 years
RURO, Inc. | Completed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 2.9
Useful life	9 years
RURO, Inc. | Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 0.2
Useful life	5 years
GENEWIZ
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of intangible assets		13 years 3 months 18 days
GENEWIZ | Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 125.5
Useful life		14 years
GENEWIZ | Completed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 44.5
GENEWIZ | Completed Technology | Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life		10 years
GENEWIZ | Completed Technology | Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life		15 years
GENEWIZ | Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 19.1
Useful life		13 years
Tec-Sem Group AG
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of intangible assets			8 years 7 months 6 days
Tec-Sem Group AG | Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			$ 0.7
Useful life			9 years
Tec-Sem Group AG | Completed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			$ 8.4
Useful life			10 years
Tec-Sem Group AG | Order or Production Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			$ 1.6
Useful life			1 year
4titude Limited
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of intangible assets				10 years 4 months 24 days
4titude Limited | Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired				$ 21.4
Useful life				10 years
4titude Limited | Completed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired				$ 5.2
Useful life				13 years
4titude Limited | Order or Production Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired				$ 0.4
Useful life				1 year
4titude Limited | Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired				$ 0.2
Useful life				1 year