Financial Instruments, Balance Sheet Location (Details) - USD ($) $ in Millions	Sep. 29, 2018	Jun. 30, 2018
Derivatives designated as hedging instruments [Member] | Cash Flow Hedging [Member] | Forward contracts held to purchase U.S. dollars [Member]
Derivatives, Fair Value [Line Items]
Notional amount of derivatives	$ 41.8	$ 49.7
Derivatives designated as hedging instruments [Member] | Cash Flow Hedging [Member] | Forward contracts held to sell U.S. dollars [Member]
Derivatives, Fair Value [Line Items]
Notional amount of derivatives	0.7	1.2
Derivatives not designated as hedging instruments [Member] | Forward contracts held to purchase U.S. dollars [Member]
Derivatives, Fair Value [Line Items]
Notional amount of derivatives	21.8	21.1
Derivatives not designated as hedging instruments [Member] | Forward contracts held to sell U.S. dollars [Member]
Derivatives, Fair Value [Line Items]
Notional amount of derivatives	$ 25.8	$ 21.3