Cash, Cash Equivalents and Short-Term Investments (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 03, 2011 securities	Dec. 03, 2010 securities
Fair Value and Gross Unrealized Losses Related to Available-For-Sale Securities [Abstract]
Fair Value	$ 123,287	$ 507,256
Gross Unrealized Losses	(288)	(3,006)
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Securities in a continuous unrealized loss position for more than twelve months	0	0
Securities in unrealized loss position	63	168
Corporate bonds and commercial paper [Member]
Fair Value and Gross Unrealized Losses Related to Available-For-Sale Securities [Abstract]
Fair Value	96,582	257,615
Gross Unrealized Losses	(269)	(1,450)
Foreign government securities [Member]
Fair Value and Gross Unrealized Losses Related to Available-For-Sale Securities [Abstract]
Fair Value	0	4,531
Gross Unrealized Losses	0	(2)
Marketable equity securities [Member]
Fair Value and Gross Unrealized Losses Related to Available-For-Sale Securities [Abstract]
Fair Value	0	9,380
Gross Unrealized Losses	0	(1,134)
Municipal securities [Member]
Fair Value and Gross Unrealized Losses Related to Available-For-Sale Securities [Abstract]
Fair Value	20,172	43,028
Gross Unrealized Losses	(18)	(32)
U.S. Treasury and agency securities [Member]
Fair Value and Gross Unrealized Losses Related to Available-For-Sale Securities [Abstract]
Fair Value	6,533	192,702
Gross Unrealized Losses	$ (1)	$ (388)