Investments

The fair values of available-for-sale investments, which approximated amortized costs, were as follows:



	December 4, 2014		August 28, 2014
Money market funds	$	866	$	1,281
Corporate bonds	799		561
Certificates of deposit	581		437
Government securities	440		420
Asset-backed securities	220		128
Commercial paper	93		107
Marketable equity securities	1		1
	$	3,000	$	2,935

The table below presents the fair value of available-for-sale debt securities by contractual maturity:



	December 4, 2014
Money market funds	$	866
Due in 1 year or less	1,057
Due in 1 - 2 years	562
Due in 2 - 4 years	467
Due after 4 years	47
	$	2,999

Proceeds from the sales of available-for-sale securities for the first quarters of 2015 and 2014 were $233 million and $113 million, respectively. Gross realized gains and losses for the first quarters of 2015 and 2014 were not significant. As of December 4, 2014, none of our available-for-sale securities had been in a loss position for longer than 12 months.