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FINANCIAL INSTRUMENTS - Schedule of Cash, Cash Equivalents, Investments and Restricted Cash and Investments Unrealized Loss Positions (Details) $ in Thousands | Dec. 24, 2017 USD ($)
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Fair Value |
Unrealized Losses Less than 12 Months | $ 3,230,450
Unrealized Losses 12 Months or Greater | 348,937
Total | 3,579,387
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (19,938)
Unrealized Losses 12 Months or Greater | (4,666)
Total | (24,604)
U.S. Treasury and agencies |
Fair Value |
Unrealized Losses Less than 12 Months | 659,453
Unrealized Losses 12 Months or Greater | 161,386
Total | 820,839
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (6,546)
Unrealized Losses 12 Months or Greater | (2,482)
Total | (9,028)
Municipal notes and bonds |
Fair Value |
Unrealized Losses Less than 12 Months | 168,189
Unrealized Losses 12 Months or Greater | 0
Total | 168,189
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (649)
Unrealized Losses 12 Months or Greater | 0
Total | (649)
Government-sponsored enterprises |
Fair Value |
Unrealized Losses Less than 12 Months | 27,681
Unrealized Losses 12 Months or Greater | 19,533
Total | 47,214
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (163)
Unrealized Losses 12 Months or Greater | (439)
Total | (602)
Foreign government bonds |
Fair Value |
Unrealized Losses Less than 12 Months | 51,879
Unrealized Losses 12 Months or Greater | 8,425
Total | 60,304
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (382)
Unrealized Losses 12 Months or Greater | (108)
Total | (490)
Corporate notes and bonds |
Fair Value |
Unrealized Losses Less than 12 Months | 2,160,923
Unrealized Losses 12 Months or Greater | 152,403
Total | 2,313,326
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (11,215)
Unrealized Losses 12 Months or Greater | (1,566)
Total | (12,781)
Mortgage backed securities — residential |
Fair Value |
Unrealized Losses Less than 12 Months | 46,771
Unrealized Losses 12 Months or Greater | 1,789
Total | 48,560
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (309)
Unrealized Losses 12 Months or Greater | (16)
Total | (325)
Mortgage backed securities — commercial |
Fair Value |
Unrealized Losses Less than 12 Months | 115,554
Unrealized Losses 12 Months or Greater | 5,401
Total | 120,955
Gross Unrealized Loss |
Unrealized Losses Less than 12 Months | (674)
Unrealized Losses 12 Months or Greater | (55)
Total | $ (729)

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