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Financial Instruments - Schedule of Cash, Cash Equivalents, Short-Term Investments and Restricted Cash and Investments Unrealized Loss Positions (Detail) $ in Thousands | Jun. 26, 2016 USD ($)
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Fair Value |
Unrealized Losses Less Than 12 Months | $ 365,004
Unrealized Losses 12 Months or Greater | 56,262
Total | 421,266
Gross Unrealized Loss |
Unrealized Losses Less Than 12 Months | (913)
Unrealized Losses 12 Months or Greater | (397)
Total | (1,310)
Municipal Notes and Bonds |
Fair Value |
Unrealized Losses Less Than 12 Months | 43,084
Unrealized Losses 12 Months or Greater | 1,994
Total | 45,078
Gross Unrealized Loss |
Unrealized Losses Less Than 12 Months | (10)
Unrealized Losses 12 Months or Greater | (6)
Total | (16)
US Treasury and Agencies |
Fair Value |
Unrealized Losses Less Than 12 Months | 65,997
Unrealized Losses 12 Months or Greater | 0
Total | 65,997
Gross Unrealized Loss |
Unrealized Losses Less Than 12 Months | (2)
Unrealized Losses 12 Months or Greater | 0
Total | (2)
Retail Funds |
Fair Value |
Unrealized Losses Less Than 12 Months | 7,539
Unrealized Losses 12 Months or Greater | 0
Total | 7,539
Gross Unrealized Loss |
Unrealized Losses Less Than 12 Months | (397)
Unrealized Losses 12 Months or Greater | 0
Total | (397)
Government-Sponsored Enterprises |
Fair Value |
Unrealized Losses Less Than 12 Months | 1,211
Unrealized Losses 12 Months or Greater | 0
Total | 1,211
Gross Unrealized Loss |
Unrealized Losses Less Than 12 Months | (13)
Unrealized Losses 12 Months or Greater | 0
Total | (13)
Foreign Government Bonds |
Fair Value |
Unrealized Losses Less Than 12 Months | 9,201
Unrealized Losses 12 Months or Greater | 0
Total | 9,201
Gross Unrealized Loss |
Unrealized Losses Less Than 12 Months | (4)
Unrealized Losses 12 Months or Greater | 0
Total | (4)
Corporate Notes and Bonds |
Fair Value |
Unrealized Losses Less Than 12 Months | 185,982
Unrealized Losses 12 Months or Greater | 46,761
Total | 232,743
Gross Unrealized Loss |
Unrealized Losses Less Than 12 Months | (317)
Unrealized Losses 12 Months or Greater | (249)
Total | (566)
Mortgage Backed Securities - Residential |
Fair Value |
Unrealized Losses Less Than 12 Months | 12,402
Unrealized Losses 12 Months or Greater | 1,328
Total | 13,730
Gross Unrealized Loss |
Unrealized Losses Less Than 12 Months | (68)
Unrealized Losses 12 Months or Greater | (84)
Total | (152)
Mortgage Backed Securities - Commercial |
Fair Value |
Unrealized Losses Less Than 12 Months | 39,588
Unrealized Losses 12 Months or Greater | 6,179
Total | 45,767
Gross Unrealized Loss |
Unrealized Losses Less Than 12 Months | (102)
Unrealized Losses 12 Months or Greater | (58)
Total | $ (160)

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