Investments

As of February 28, 2013 and August 30, 2012, available-for-sale investments, including cash equivalents, were as follows:



As of	February 28, 2013									August 30, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Money market funds	$	1,634	$	—	$	—		$	1,634	$	2,159	$	—	$	—	$	2,159
Corporate bonds	360		1		—			361		233		1		—		234
Government securities	220		—		—			220		144		—		—		144
Asset-backed securities	111		—		—			111		77		—		—		77
Certificates of deposit	93		—		—			93		31		—		—		31
Commercial paper	58		—		—			58		39		—		—		39
Marketable equity securities	10		—		(1		)	9		10		—		—		10
	$	2,486	$	1	$	(1	)	$	2,486	$	2,693	$	1	$	—	$	2,694

As of February 28, 2013, no available-for-sale security had been in a loss position for longer than 12 months.

The table below presents the amortized cost and fair value of available-for-sale debt securities, including cash equivalents, as of February 28, 2013 by contractual maturity:



	Amortized Cost		Fair Value
Money market funds not due at a single maturity date	$	1,634	$	1,634
Due in 1 year or less	306		306
Due in 1 - 2 years	228		228
Due in 2 - 4 years	277		278
Due after 4 years	31		31
	$	2,476	$	2,477

Net unrealized holding gains reclassified out of accumulated other comprehensive income from sales of available-for-sale securities were not significant for the second quarter or first six months of 2013 and were $34 million for the second quarter of 2012. Proceeds from the sales of available-for-sale securities were $67 million and $160 million for the second quarter and first six months of 2013, respectively, and $41 million for the second quarter of 2012. Gross realized gains from sales of available-for-sale securities were not significant for the second quarter or first six months of 2013 and were $34 million for the second quarter of 2012.