Investments and Fair Value Measurements (Details 5) (USD $) In Thousands	Oct. 02, 2011	Jan. 02, 2011
Fixed income securities by contractual maturity
Amortized Cost	$ 4,330,430	$ 4,518,895
Debt Securities [Member]
Fixed income securities by contractual maturity
Amortized Cost, Due in one year or less	1,563,875
Fair Value, Due in one year or less	1,566,649
Amortized Cost, Due after one year through five years	2,698,391
Fair Value, Due after one year through five years	2,714,663
Amortized Cost	4,262,266	4,450,370
Fair Value, Total	$ 4,281,312	$ 4,448,837

For an unclassified balance sheet, total of debt securities categorized neither as held-to-maturity nor trading.

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+ Details