Acquisitions - Narrative (Details) - USD ($) $ in Millions			9 Months Ended
	Oct. 30, 2018	Mar. 15, 2018	Mar. 30, 2019
Business Acquisition [Line Items]
Consideration transferred			$ 7.7
Cash payments for assets			5.1
Earn-out liability			2.6
Deferred tax liability			2.4
Minimum
Business Acquisition [Line Items]
Estimated useful life		5 years
Maximum
Business Acquisition [Line Items]
Estimated useful life		10 years
RPC Photonics, Inc.
Business Acquisition [Line Items]
Cash consideration paid at closing	$ 33.4
Performance based earn-out payments (up to)	$ 53.0
Earn-out period	4 years
Escrow payments	$ 3.5
RPC Photonics, Inc. | Minimum
Business Acquisition [Line Items]
Estimated useful life	6 years
RPC Photonics, Inc. | Maximum
Business Acquisition [Line Items]
Estimated useful life	7 years
AW business
Business Acquisition [Line Items]
Cash consideration paid at closing		$ 466.8
AW business | Minimum
Business Acquisition [Line Items]
Estimated useful life		3 years
AW business | Maximum
Business Acquisition [Line Items]
Estimated useful life		6 years
Customer Backlog | RPC Photonics, Inc.
Business Acquisition [Line Items]
Estimated useful life	1 year
Customer Backlog | AW business
Business Acquisition [Line Items]
Estimated useful life		1 year
Developed technology
Business Acquisition [Line Items]
Intangible assets acquired			$ 7.6
In-process research and development
Business Acquisition [Line Items]
Estimated useful life			6 years
In-process research and development | AW business
Business Acquisition [Line Items]
Estimated useful life		6 years