Cash, Cash Equivalents and Short-Term Investments (Details 1) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Aug. 30, 2013 securities	Nov. 30, 2012 securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	0	1
Fair Value and Gross Unrealized Losses Related to Available-For-Sale Securities [Abstract]
Available-for-sale securities in a continuous unrealized loss position for less than twelve months, fair value	$ 1,180,208	$ 186,321
Available-for-sale securities in a continuous unrealized loss position for less than twelve months, gross unrealized losses	(6,609)	(259)
Available-for-sale securities in a continuous unrealized loss position for more than twelve months, fair value		2,999
Available-for-sale securities in a continuous unrealized loss position for more than twelve months, gross unrealized losses		(1)
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year	535	65
Corporate bonds and commercial paper
Fair Value and Gross Unrealized Losses Related to Available-For-Sale Securities [Abstract]
Available-for-sale securities in a continuous unrealized loss position for less than twelve months, fair value	667,920	95,489
Available-for-sale securities in a continuous unrealized loss position for less than twelve months, gross unrealized losses	(4,334)	(132)
Available-for-sale securities in a continuous unrealized loss position for more than twelve months, fair value		2,999
Available-for-sale securities in a continuous unrealized loss position for more than twelve months, gross unrealized losses		(1)
US Treasury and Government [Member]
Fair Value and Gross Unrealized Losses Related to Available-For-Sale Securities [Abstract]
Available-for-sale securities in a continuous unrealized loss position for less than twelve months, fair value	431,040	48,203
Available-for-sale securities in a continuous unrealized loss position for less than twelve months, gross unrealized losses	(1,919)	(55)
Foreign government securities
Fair Value and Gross Unrealized Losses Related to Available-For-Sale Securities [Abstract]
Available-for-sale securities in a continuous unrealized loss position for less than twelve months, fair value	6,444	2,105
Available-for-sale securities in a continuous unrealized loss position for less than twelve months, gross unrealized losses	(27)	(12)
Municipal securities
Fair Value and Gross Unrealized Losses Related to Available-For-Sale Securities [Abstract]
Available-for-sale securities in a continuous unrealized loss position for less than twelve months, fair value	74,804	40,524
Available-for-sale securities in a continuous unrealized loss position for less than twelve months, gross unrealized losses	$ (329)	$ (60)