Acquisitions - Intangible Assets Acquired (Details) - USD ($) $ in Millions	Nov. 15, 2018	Apr. 06, 2018	Oct. 05, 2017
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	$ 125.4
Useful life	14 years
GENEWIZ | Completed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 44.1
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	$ 19.0
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