Note 7: Available-for-Sale Investments

Available-for-sale investments as of October 1, 2011 and December 25, 2010 were as follows:

In the preceding table, government bonds include bonds issued or deemed to be guaranteed by government entities. Government bonds include instruments such as U.S. Treasury securities, non-U.S. government bonds, U.S. agency securities, and Federal Deposit Insurance Corporation (FDIC)-insured corporate bonds as of October 1, 2011 and December 25, 2010.

The amortized cost and fair value of available-for-sale debt investments as of October 1, 2011, by contractual maturity, were as follows:

Instruments not due at a single maturity date in the table above includes asset-backed securities and money market fund deposits.

We sold available-for-sale investments for proceeds of $298 million in the third quarter of 2011 and $9.1 billion in the first nine months of 2011 ($93 million in the third quarter of 2010 and $399 million in the first nine months of 2010). Substantially all of the proceeds in the first nine months of 2011 were from debt investments that were primarily used to fund our acquisition of McAfee. The gross realized gains on sales of available-for-sale investments were $186 million in the third quarter of 2011 and $251 million in the first nine months of 2011 ($33 million in the third quarter of 2010 and $112 million in the first nine months of 2010) and were primarily related to our sales of marketable equity securities. We determine the cost of an investment sold on an average cost basis at the individual security level.

The before-tax net unrealized holding gains (losses) on available-for-sale investments that have been included in other comprehensive income (loss) and the before-tax net gains (losses) reclassified from accumulated other comprehensive income (loss) into earnings were as follows: