Contractual Maturities of Investments Held (Detail) $ in Thousands	Jul. 05, 2015 USD ($)
Schedule of Available-for-sale Securities
Due within one year, cost	$ 451,854
Due after 1 year through 5 years, cost	218,798
Due after 5 years through 10 years, cost	6,481
Due after 10 years, cost	37,334
Total, cost	714,467
Due within one year, fair value	452,040
Due after 1 year through 5 years, fair value	219,045
Due after 5 years through 10 years, fair value	6,512
Due after 10 years, fair value	36,151
Total, fair value	$ 713,748