Cash, Cash Equivalents and Short-Term Investments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Feb. 28, 2014	Nov. 29, 2013
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 3,121,819	$ 3,164,332
Unrealized Gains	10,939	10,358
Unrealized Losses	(666)	(938)
Estimated Fair Value, Total cash, cash equivalents and short-term investments	3,132,092	3,173,752
Cash and cash equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	733,914	834,556
Unrealized Gains	2	0
Unrealized Losses	0	0
Estimated Fair Value, cash and cash equivalents	733,916	834,556
Cash [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	289,712	286,221
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value, cash and cash equivalents	289,712	286,221
Cash equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	444,202	548,335
Unrealized Gains	2	0
Unrealized Losses	0	0
Estimated Fair Value, cash and cash equivalents	444,204	548,335
Cash equivalents [Member] | Money Market Funds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	388,448	429,373
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value, cash and cash equivalents	388,448	429,373
Cash equivalents [Member] | Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	6,000
Unrealized Gains	0
Unrealized Losses	0
Estimated Fair Value, cash and cash equivalents	6,000
Cash equivalents [Member] | Time deposits
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	32,757	104,711
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value, cash and cash equivalents	32,757	104,711
Cash equivalents [Member] | U.S. Treasury securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	16,997	14,251
Unrealized Gains	2	0
Unrealized Losses	0	0
Estimated Fair Value, cash and cash equivalents	16,999	14,251
Short-term investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,387,905	2,329,776
Unrealized Gains	10,937	10,358
Unrealized Losses	(666)	(938)
Estimated Fair Value, short-term investments	2,398,176	2,339,196
Short-term investments [Member] | Marketable equity securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	178	177
Unrealized Gains	278	543
Unrealized Losses	0	0
Estimated Fair Value, short-term investments	456	720
Short-term fixed income securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,387,727	2,329,599
Unrealized Gains	10,659	9,815
Unrealized Losses	(666)	(938)
Estimated Fair Value, short-term investments	2,397,720	2,338,476
Short-term fixed income securities [Member] | Corporate bonds and commercial paper
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,343,106	1,261,375
Unrealized Gains	7,847	7,116
Unrealized Losses	(382)	(631)
Estimated Fair Value, short-term investments	1,350,571	1,267,860
Short-term fixed income securities [Member] | Foreign government securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	11,188	11,213
Unrealized Gains	59	56
Unrealized Losses	0	0
Estimated Fair Value, short-term investments	11,247	11,269
Short-term fixed income securities [Member] | Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	177,752	186,320
Unrealized Gains	623	328
Unrealized Losses	(4)	(24)
Estimated Fair Value, short-term investments	178,371	186,624
Short-term fixed income securities [Member] | U.S. agency securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	430,012	446,615
Unrealized Gains	1,371	1,516
Unrealized Losses	(169)	(186)
Estimated Fair Value, short-term investments	431,214	447,945
Short-term fixed income securities [Member] | U.S. Treasury securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	425,669	424,076
Unrealized Gains	759	799
Unrealized Losses	(111)	(97)
Estimated Fair Value, short-term investments	$ 426,317	$ 424,778