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

6 Months Ended

May 30, 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 May 30, 2014 (in thousands):

	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Current assets:
Cash	$	286,379	$	—	$	—		$	286,379
Cash equivalents:
Money market mutual funds	441,576		—		—			441,576
Municipal securities	1,500		2		—			1,502
Time deposits	61,064		—		—			61,064
U.S. Treasury securities	26,499		—		—			26,499
Total cash equivalents	530,639		2		—			530,641
Total cash and cash equivalents	817,018		2		—			817,020
Short-term fixed income securities:
Corporate bonds and commercial paper	1,402,478		7,998		(229		)	1,410,247
Foreign government securities	20,697		79		—			20,776
Municipal securities	181,886		671		(2		)	182,555
U.S. agency securities	471,961		1,477		(101		)	473,337
U.S. Treasury securities	425,007		920		(75		)	425,852
Subtotal	2,502,029		11,145		(407		)	2,512,767
Marketable equity securities	178		246		—			424
Total short-term investments	2,502,207		11,391		(407		)	2,513,191
Total cash, cash equivalents and short-term investments	$	3,319,225	$	11,393	$	(407	)	$	3,330,211

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 May 30, 2014 and November 29, 2013 (in thousands):

	2014					2013
	Fair  Value		Gross Unrealized Losses			Fair  Value		Gross Unrealized Losses
Corporate bonds and commercial paper	$	93,651	$	(95	)	$	225,759	$	(631	)
Municipal securities	15,742		(2		)	13,522		(24		)
U.S. Treasury and agency securities	38,156		(29		)	105,278		(283		)
Total	$	147,549	$	(126	)	$	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 May 30, 2014 (in thousands):

	2014
	Fair  Value		Gross Unrealized Losses
Corporate bonds and commercial paper	$	20,841	$	(134	)
U.S. Treasury and agency securities	29,437		(147		)
Total	$	50,278	$	(281	)

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 May 30, 2014 (in thousands):

	Amortized Cost		Estimated Fair Value
Due within one year	$	598,760	$	599,985
Due between one and two years	889,136		893,246
Due between two and three years	766,734		770,962
Due after three years	247,399		248,574
Total	$	2,502,029	$	2,512,767