Cash, Cash Equivalents and Short-Term Investments (Tables)

12 Months Ended

Nov. 29, 2013

Cash, Cash Equivalents, and Short Term Investments Disclosure [Abstract]

Cash, Cash Equivalents and Short-term Investments

Cash, cash equivalents and short-term investments consisted of the following as of November 29, 2013 (in thousands):

	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Current assets:
Cash	$	286,221	$	—	$	—		$	286,221
Cash equivalents:
Money market mutual funds	429,373		—		—			429,373
Time deposits	104,711		—		—			104,711
U.S. Treasury securities	14,251		—		—			14,251
Total cash equivalents	548,335		—		—			548,335
Total cash and cash equivalents	834,556		—		—			834,556
Short-term fixed income securities:
Corporate bonds and commercial paper	1,261,375		7,116		(631		)	1,267,860
Foreign government securities	11,213		56		—			11,269
Municipal securities	186,320		328		(24		)	186,624
U.S. agency securities	446,615		1,516		(186		)	447,945
U.S. Treasury securities	424,076		799		(97		)	424,778
Subtotal	2,329,599		9,815		(938		)	2,338,476
Marketable equity securities	177		543		—			720
Total short-term investments	2,329,776		10,358		(938		)	2,339,196
Total cash, cash equivalents and short-term investments	$	3,164,332	$	10,358	$	(938	)	$	3,173,752

Cash, cash equivalents and short-term investments consisted of the following as of November 30, 2012 (in thousands):

	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Current assets:
Cash	$	200,771	$	—	$	—		$	200,771
Cash equivalents:
Corporate bonds and commercial paper	3,998		—		—			3,998
Money market mutual funds and repurchase agreements	1,171,270		—		—			1,171,270
Municipal securities	3,895		—		—			3,895
Time deposits	45,118		—		—			45,118
Total cash equivalents	1,224,281		—		—			1,224,281
Total cash and cash equivalents	1,425,052		—		—			1,425,052
Short-term fixed income securities:
Corporate bonds and commercial paper	1,059,158		11,415		(133		)	1,070,440
Foreign government securities	6,919		45		(12		)	6,952
Municipal securities	180,488		97		(60		)	180,525
Time deposits	20,113		—		—			20,113
U.S. agency securities	501,863		2,346		(18		)	504,191
U.S. Treasury securities	330,072		801		(37		)	330,836
Subtotal	2,098,613		14,704		(260		)	2,113,057
Marketable equity securities	237		7		—			244
Total short-term investments	2,098,850		14,711		(260		)	2,113,301
Total cash, cash equivalents and short-term investments	$	3,523,902	$	14,711	$	(260	)	$	3,538,353

Continuous Unrealized Loss Position Less Than Twelve Months Related to Available-for-Sale Securities

The following table summarizes the fair value and gross unrealized losses related to available-for-sale securities, aggregated by investment category, that have been in a continuous unrealized loss position for less than twelve months, as of November 29, 2013 and November 30, 2012 (in thousands):

	2013					2012
	Fair  Value		Gross Unrealized Losses			Fair  Value		Gross Unrealized Losses
Corporate bonds and commercial paper	$	225,759	$	(631	)	$	95,489	$	(132	)
Foreign government securities	—		—			2,105		(12		)
Municipal securities	13,522		(24		)	40,524		(60		)
U.S. Treasury and agency securities	105,278		(283		)	48,203		(55		)
Total	$	344,559	$	(938	)	$	186,321	$	(259	)

Continuous Unrealized Loss Position Twelve Months or Longer Related to Available-for-Sale-Securities

The following table summarizes the fair value and gross unrealized losses related to available-for-sale securities, aggregated by investment category, that were in a continuous unrealized loss position for more than twelve months, as of November 30, 2012 (in thousands):

	2012
	Fair  Value		Gross Unrealized Losses
Corporate bonds and commercial paper	$	2,999	$	(1	)
Total	$	2,999	$	(1	)

Cost and Estimated Fair Value of Debt Securities

The following table summarizes the cost and estimated fair value of short-term fixed income securities classified as short-term investments based on stated effective maturities as of November 29, 2013 (in thousands):

	Amortized Cost		Estimated Fair Value
Due within one year	$	508,359	$	509,438
Due between one and two years	904,704		908,767
Due between two and three years	698,679		702,035
Due after three years	217,857		218,236
Total	$	2,329,599	$	2,338,476