Acquisitions - Narrative (Details) - USD ($) $ in Millions					3 Months Ended	12 Months Ended
	May 31, 2019	Oct. 30, 2018	Mar. 15, 2018	Aug. 09, 2017	Mar. 30, 2019	Jun. 29, 2019	Jun. 30, 2018
Business Acquisition [Line Items]
Contingent consideration liability, up to						$ 63.0
Contingent consideration period						4 years
Consideration paid for asset acquisitions						$ 7.7
Cash paid for asset acquisitions						5.1
Asset acquisition earn-out liabilities assumed						2.6
Asset acquisition, deferred tax liability						$ 2.4
Minimum
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life			5 years			5 years
Maximum
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life						10 years
Developed technology
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life						4 years 8 months 12 days	4 years 1 month 6 days
Intangible assets acquired						$ 7.6
3Z Telecom, Inc.
Business Acquisition [Line Items]
Cash consideration	$ 23.2
Contingent consideration liability, up to	7.0
Escrow payments	$ 4.3
Contingent consideration period	2 years
3Z Telecom, Inc. | Minimum
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life	5 years
3Z Telecom, Inc. | Maximum
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life	6 years
3Z Telecom, Inc. | Customer backlog
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life	1 year
RPC Photonics, Inc.
Business Acquisition [Line Items]
Cash consideration		$ 33.4
Contingent consideration liability, up to		53.0
Escrow payments		$ 3.5
Contingent consideration period		4 years
Escrow payments		$ 3.5
RPC Photonics, Inc. | Minimum
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life		6 years
RPC Photonics, Inc. | Maximum
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life		7 years
RPC Photonics, Inc. | Customer backlog
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life		1 year
AW
Business Acquisition [Line Items]
Cash consideration			$ 466.8
AW | Customer backlog
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life			1 year
AW | Intangible assets, except IPR&D | Minimum
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life			3 years
AW | Intangible assets, except IPR&D | Maximum
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life			6 years
AW | Developed technology
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life					6 years
Trilithic
Business Acquisition [Line Items]
Cash consideration				$ 56.4
Trilithic | Acquired developed technology and customer relationships | Minimum
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life				3 years
Trilithic | Acquired developed technology and customer relationships | Maximum
Business Acquisition [Line Items]
Weighted-Average Remaining Useful Life				5 years