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Acquisitions - Narrative (Details) - USD ($) $ in Millions			3 Months Ended
Acquisitions - Narrative (Details) - USD ($) $ in Millions	May 31, 2019	Oct. 30, 2018	Sep. 28, 2019	Jun. 29, 2019
Business Acquisition [Line Items]
Earn-out period			4 years
Performance based earn-out payments (up to)			$ 63.0
Fair value of contingent consideration			40.1	$ 38.4
3Z Telecom, Inc.
Business Acquisition [Line Items]
Cash consideration paid at closing	$ 23.2
Earn-out liability	$ 7.0
Earn-out period	2 years
Escrow payments	$ 4.3
Fair value of contingent consideration	$ 5.5
3Z Telecom, Inc. \| Minimum
Business Acquisition [Line Items]
Estimated useful life	5 years
3Z Telecom, Inc. \| Maximum
Business Acquisition [Line Items]
Estimated useful life	6 years
RPC Photonics, Inc.
Business Acquisition [Line Items]
Cash consideration paid at closing		$ 33.4
Earn-out period		4 years
Escrow payments		$ 3.5
Performance based earn-out payments (up to)		53.0
Fair value of contingent consideration		$ 36.2	$ 31.7
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
Customer Backlog \| 3Z Telecom, Inc.
Business Acquisition [Line Items]
Estimated useful life	1 year
Customer Backlog \| RPC Photonics, Inc.
Business Acquisition [Line Items]
Estimated useful life		1 year