Investments and Fair Value Measurements-AFS FV and Unrealized Losses (Details 5) (USD $) In Thousands, unless otherwise specified	Jul. 01, 2012
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	$ 496,376
Less than 12 months, Gross Unrealized Loss	(620)
Greater than 12 months, Fair Value	34,566
Greater than 12 months, Gross Unrealized Loss	(233)
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	39,018
Less than 12 months, Gross Unrealized Loss	(9)
Greater than 12 months, Fair Value	0
Greater than 12 months, Gross Unrealized Loss	0
U.S. Government-sponsored agency securities [Member]
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	18,247
Less than 12 months, Gross Unrealized Loss	(3)
Greater than 12 months, Fair Value	0
Greater than 12 months, Gross Unrealized Loss	0
Corporate notes and bonds [Member]
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	129,294
Less than 12 months, Gross Unrealized Loss	(249)
Greater than 12 months, Fair Value	11,022
Greater than 12 months, Gross Unrealized Loss	(58)
Asset-backed securities [Member]
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	41,835
Less than 12 months, Gross Unrealized Loss	(34)
Greater than 12 months, Fair Value	0
Greater than 12 months, Gross Unrealized Loss	0
Mortgage Backed Securities, Other [Member]
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	1,444
Less than 12 months, Gross Unrealized Loss	(1)
Greater than 12 months, Fair Value	0
Greater than 12 months, Gross Unrealized Loss	0
Municipal notes and bonds [Member]
Available-for-sale securities that were in an unrealized gain position
Less than 12 months, Fair Value	266,538
Less than 12 months, Gross Unrealized Loss	(324)
Greater than 12 months, Fair Value	23,544
Greater than 12 months, Gross Unrealized Loss	$ (175)