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

9 Months Ended

Aug. 29, 2014

Cash, Cash Equivalents, and Short-term Investments [Abstract]

Cash Cash Equivalents and Short term Investments

Cash, cash equivalents and short-term investments consisted of the following as of August 29, 2014 (in thousands):

	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Current assets:
Cash	$	274,463	$	—	$	—		$	274,463
Cash equivalents:
Money market mutual funds	565,996		—		—			565,996
Time deposits	62,870		—		—			62,870
Total cash equivalents	628,866		—		—			628,866
Total cash and cash equivalents	903,329		—		—			903,329
Short-term fixed income securities:
Corporate bonds and commercial paper	1,456,706		5,955		(425		)	1,462,236
Foreign government securities	23,128		40		(3		)	23,165
Municipal securities	185,634		543		(5		)	186,172
U.S. agency securities	506,227		881		(260		)	506,848
U.S. Treasury securities	437,362		580		(122		)	437,820
Subtotal	2,609,057		7,999		(815		)	2,616,241
Marketable equity securities	174		453		—			627
Total short-term investments	2,609,231		8,452		(815		)	2,616,868
Total cash, cash equivalents and short-term investments	$	3,512,560	$	8,452	$	(815	)	$	3,520,197

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

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 an unrealized loss position for less than twelve months, as of August 29, 2014 and November 29, 2013 (in thousands):

	2014					2013
	Fair  Value		Gross Unrealized Losses			Fair  Value		Gross Unrealized Losses
Corporate bonds and commercial paper	$	256,849	$	(289	)	$	225,759	$	(631	)
Foreign government securities	7,595		(3		)	—		—
Municipal securities	9,837		(5		)	13,522		(24		)
U.S. Treasury and agency securities	169,621		(232		)	105,278		(283		)
Total	$	443,902	$	(529	)	$	344,559	$	(938	)

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 August 29, 2014 (in thousands):

	2014
	Fair  Value		Gross Unrealized Losses
Corporate bonds and commercial paper	$	18,577	$	(136	)
U.S. Treasury and agency securities	29,416		(150		)
Total	$	47,993	$	(286	)

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 August 29, 2014 (in thousands):

	Amortized Cost		Estimated Fair Value
Due within one year	$	629,477	$	630,712
Due between one and two years	808,082		810,830
Due between two and three years	915,643		918,119
Due after three years	255,855		256,580
Total	$	2,609,057	$	2,616,241