Investments and Fair Value Measurements-AFS FV and Unrealized Losses (Details 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2013
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	$ 1,254,701
Less than 12 months, Gross Unrealized Loss	(4,179)
U.S. Treasury and government agency securities [Member]
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	136,621
Less than 12 months, Gross Unrealized Loss	(424)
U.S. Government-sponsored agency securities [Member]
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	2,858
Less than 12 months, Gross Unrealized Loss	(1)
International Government Securities [Member]
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	36,265
Less than 12 months, Gross Unrealized Loss	(224)
Corporate notes and bonds [Member]
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	453,671
Less than 12 months, Gross Unrealized Loss	(1,565)
Asset-backed securities [Member]
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	129,855
Less than 12 months, Gross Unrealized Loss	(170)
Mortgage Backed Securities, Other [Member]
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	64,811
Less than 12 months, Gross Unrealized Loss	(554)
Municipal notes and bonds [Member]
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	430,620
Less than 12 months, Gross Unrealized Loss	$ (1,241)