Schedule of Amortized Cost and Fair Value of Cash Equivalents, Investments, and Restricted Cash and Investments with Contractual Maturities (Detail) $ in Thousands	Mar. 27, 2016 USD ($)
Fair Value Disclosures [Abstract]
Due in one year or less, cost	$ 2,518,323
Due after one year through five years, cost	1,643,955
Due in more than five years, cost	157,971
Cost, Total	4,320,249
Due in one year or less, estimated fair value	2,518,382
Due after one year through five years, estimated fair value	1,644,568
Due in more than five years, estimated fair value	156,597
Estimated fair value, Total	$ 4,319,547