Financial Instruments (Tables)

3 Months Ended

Sep. 23, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Available-for-sale investments [Table Text Block]

Fair values were as follows:

	September 23, 2017									June 24, 2017
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Estimated Fair Value		Amortized Cost			Gross Unrealized Gain		Gross Unrealized Loss			Estimated Fair Value
	(in thousands)
Available-for-sale investments
Agency Securities	6,973		1		—			6,974		—			—		—			—
Certificates of deposit	47,549		—		—			47,549		—		—	—		—			—
Commercial paper	105,971		—		—			105,971		—			—		—			—
Corporate debt securities	381,292		—		(177		)	381,115		—			—		—			—
U.S. Treasury securities	$	656,374	$	—	$	(1,156	)	$	655,218	$	499,952		$	—	$	(1,234	)	$	498,718
Total available-for-sale investments	$	1,198,159	$	1	$	(1,333	)	$	1,196,827	$	499,952		$	—	$	(1,234	)	$	498,718

Schedule of long-term debt [Table Text Block]

The following table summarizes the Company’s long-term debt:

	September 23, 2017			June 24, 2017
	(in thousands)
3.450% fixed rate notes due June 2027	$	500,000		$	500,000
2.5% fixed rate notes due November 2018	500,000			500,000
3.375% fixed rate notes due March 2023	500,000			500,000
Total	1,500,000			1,500,000
Less: Reduction for unamortized discount and debt issuance costs	(11,594		)	(12,322		)
Total long-term debt	$	1,488,406		$	1,487,678