Acquisitions - Intangible Assets Acquired (Details) - USD ($) $ in Millions							12 Months Ended
	Nov. 15, 2018	Apr. 06, 2018	Oct. 05, 2017	Aug. 22, 2017	Jul. 05, 2017	Nov. 28, 2016	Sep. 30, 2019
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
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
PBMMI and Novare
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of intangible assets					11 years
PBMMI and Novare | Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired					$ 8.5
PBMMI and Novare | Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired					$ 0.1
Cool Lab, LLC
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of intangible assets						5 years 4 months 24 days
Cool Lab, LLC | Customer Relationships, Certain Customer
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired						$ 3.6
Useful life						3 years
Cool Lab, LLC | Other Customer Relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired						$ 1.3
Useful life						10 years
Cool Lab, LLC | Completed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired						$ 1.2
Useful life						8 years
RURO, Inc.
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired				$ 4.0
RURO, Inc. | Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired				3.1
RURO, Inc. | Completed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired				$ 0.9