Financial Instruments, Balance Sheet Location (Details) - USD ($) $ in Millions	Sep. 23, 2017	Jun. 24, 2017
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	$ 52.6	$ 36.2
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	1.5	0.2
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	15.9	44.5
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	$ 25.1	$ 21.6