Contractual Maturities of Investments Held (Detail) $ in Thousands	Jul. 02, 2017 USD ($)
Schedule of Available-for-sale Securities
Due within one year, cost	$ 810,544
Due after 1 year through 5 years, cost	139,051
Due after 5 years through 10 years, cost	14,062
Due after 10 years, cost	38,057
Total, cost	1,001,714
Due within one year, fair market value	809,338
Due after 1 year through 5 years, fair market value	138,811
Due after 5 years through 10 years, fair market value	13,731
Due after 10 years, fair market value	39,284
Total, fair market value	$ 1,001,164