2.2.0.25falsefalse10301 - Disclosure - Available-for-Sale Investmentstruefalsefalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) USD ($) / shares $Duration_1_1_2010_To_12_31_2010http://www.sec.gov/CIK0000024741duration2010-01-01T00:00:002010-12-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0glw_AvailableForSaleInvestmentsAbstractglwfalsenadurationAvailable-for-Sale Investments [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAvailable-for-Sale Investments [Abstract]falsefalseAvailable-for-Sale Investments3false0us-gaap_AvailableForSaleSecuritiesTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div> <div> <div align="left"> 3. Available-for-Sale Investments The following is a summary of the fair value of available-for-sale securities (in millions):</div></div></div> <table border="0" cellspacing="0"> <tr><td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td></tr> <tr valign="bottom"><td colspan="3" align="right"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td></tr> <tr valign="bottom"><td colspan="9" align="left"> </td> <td style="text-indent: 3px;" colspan="4" align="left">Amortized cost</td> <td align="left"> </td> <td align="left"> </td> <td colspan="3" align="right">Fair value</td> <td align="left"> </td></tr> <tr valign="bottom"><td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" colspan="3" align="right">December 31,</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" colspan="4" align="right">December 31,</td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">2009</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">2010</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="center">2009</td></tr> <tr valign="bottom"><td style="text-indent: 1px;" colspan="2" align="left">Bonds, notes and other securities:</td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td></tr> <tr valign="bottom"><td style="text-indent: 1px;" colspan="2" align="left">U.S. government and agencies</td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="right">$</td> <td align="left"> </td> <td style="text-indent: 2px;" colspan="2" align="left">1,734</td> <td align="right">$</td> <td align="right">973</td> <td align="left"> </td> <td align="left">$</td> <td align="right">1,737</td> <td align="left"> </td> <td align="left">$</td> <td align="right">975</td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid; text-indent: 1px;" align="left">Other debt securities</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">11</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">66</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">15</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">67</td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid; text-indent: 4px;" colspan="2" align="left">Total short-term investments</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 2px;" colspan="2" align="left">1,745</td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="right">1,039</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">1,752</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">1,042</td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid; text-indent: 1px;" align="left">Asset-backed securities</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">64</td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="right">75</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">45</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">42</td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid; text-indent: 4px;" colspan="2" align="left">Total long-term investments</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">64</td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="right">75</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">45</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">42</td></tr></table>   We do not intend to sell, nor do we believe it is more likely than not that we would be required to sell, the long-term investment asset-backed securities (which are collateralized by mortgages) before recovery of their amortized cost basis. It is possible that a significant degradation in the delinquency or foreclosure rates in the underlying assets could cause further temporary or other-than-temporary impairments in the future.<a name="page_79"> </a> <div> The following table summarizes the contractual maturities of available-for-sale securities at December 31, 2010 (in millions): <div class="MetaData"> <div> <div align="left"> <table border="0" cellspacing="0"> <tr><td width="53%"> </td> <td width="2%"> </td> <td width="43%"> </td></tr> <tr valign="bottom"><td align="left">Less than one year</td> <td align="right">$</td> <td align="right">1,501</td></tr> <tr valign="bottom"><td align="left">Due in 1-5 years</td> <td align="right"> </td> <td align="right">242</td></tr> <tr valign="bottom"><td align="left">Due in 5-10 years</td> <td align="right"> </td> <td align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid;" align="left">Due after 10 years (1)</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">54</td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid; text-indent: 2px;" align="left">Total</td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="right">1,797</td></tr></table></div> <div class="MetaData"> (1) Included in the maturity table is $45 million of asset-based securities that mature over time and are being reported at their final maturity dates.</div></div> </div> The following table provides the fair value and gross unrealized losses of the Company's investments and unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at December 31, 2010 and 2009 (in millions): <div align="left"> <table border="0" cellspacing="0"> <tr><td width="24%"> </td> <td width="2%"> </td> <td width="8%"> </td> <td width="9%"> </td> <td width="7%"> </td> <td width="5%"> </td> <td width="5%"> </td> <td width="6%"> </td> <td width="2%"> </td> <td width="3%"> </td> <td width="5%"> </td> <td width="2%"> </td> <td width="4%"> </td> <td width="2%"> </td> <td width="6%"> </td> <td width="2%"> </td></tr> <tr valign="bottom"><td align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" colspan="3" align="right">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 2px;" colspan="2" align="left">Less than 12 months</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" colspan="3" align="right">12 months or greater</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td align="left"> </td> <td align="right"> </td> <td style="text-indent: 1px;" align="left">Fair</td> <td style="text-indent: 1px;" colspan="3" align="left">Unrealized Fair</td> <td colspan="2" align="right">Unrealized</td> <td align="left"> </td> <td align="left"> </td> <td align="center">Fair</td> <td align="left"> </td> <td style="text-indent: 3px;" colspan="3" align="left">Unrealized</td> <td align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left">value</td> <td style="border-bottom: #000000 1px solid;" align="right">losses</td> <td style="border-bottom: #000000 1px solid;" colspan="2" align="right">value</td> <td style="border-bottom: #000000 1px solid;" colspan="2" align="right">losses</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">value</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">losses</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid;" align="left">U.S. government and agencies</td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid; text-indent: 1px;" align="left">139</td> <td style="border-bottom: #000000 1px solid;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">0</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 2px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">139</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 3px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">0</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid; text-indent: 5px;" align="left">Total short-term investments</td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid; text-indent: 1px;" align="left">139</td> <td style="border-bottom: #000000 1px solid;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">0</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 2px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">139</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 3px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">0</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid;" align="left">Asset-backed securities</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="right">45</td> <td style="border-bottom: #000000 1px solid;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">(20</td> <td style="border-bottom: #000000 1px solid;" align="left">)</td> <td style="border-bottom: #000000 1px solid; text-indent: 2px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">45</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 3px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">(20</td> <td style="border-bottom: #000000 1px solid;" align="left">)</td></tr> <tr valign="bottom"><td style="border-bottom: #000000 3px double; text-indent: 5px;" align="left">Total long-term investments</td> <td style="border-bottom: #000000 3px double;" align="right"> </td> <td style="border-bottom: #000000 3px double;" align="left"> </td> <td style="border-bottom: #000000 3px double;" align="left"> </td> <td style="border-bottom: #000000 3px double;" align="right">$</td> <td style="border-bottom: #000000 3px double;" align="right">45</td> <td style="border-bottom: #000000 3px double;" align="left">$</td> <td style="border-bottom: #000000 3px double;" align="right">(20</td> <td style="border-bottom: #000000 3px double;" align="left">)</td> <td style="border-bottom: #000000 3px double; text-indent: 2px;" align="left">$</td> <td style="border-bottom: #000000 3px double;" align="right">45</td> <td style="border-bottom: #000000 3px double;" align="left"> </td> <td style="border-bottom: #000000 3px double; text-indent: 3px;" align="left">$</td> <td style="border-bottom: #000000 3px double;" align="right"> </td> <td style="border-bottom: #000000 3px double;" align="right">(20</td> <td style="border-bottom: #000000 3px double;" align="left">)</td></tr> <tr><td colspan="16"> </td></tr> <tr valign="bottom"><td align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" colspan="3" align="right">December 31, 2009</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 2px;" colspan="2" align="left">Less than 12 months</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" colspan="3" align="right">12 months or greater</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td align="left"> </td> <td align="right"> </td> <td style="text-indent: 1px;" align="left">Fair</td> <td colspan="2" align="left">Unrealized</td> <td align="right">Fair</td> <td colspan="2" align="right">Unrealized</td> <td align="left"> </td> <td align="left"> </td> <td align="center">Fair</td> <td align="left"> </td> <td style="text-indent: 3px;" colspan="3" align="left">Unrealized</td> <td align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left">value</td> <td style="border-bottom: #000000 1px solid;" align="center">losses</td> <td style="border-bottom: #000000 1px solid;" colspan="2" align="right">value</td> <td style="border-bottom: #000000 1px solid;" colspan="2" align="right">losses</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">value</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">losses</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid;" align="left">U.S. government and agencies</td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid; text-indent: 1px;" align="left">320</td> <td style="border-bottom: #000000 1px solid;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">0</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 2px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">320</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 3px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">0</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid; text-indent: 5px;" align="left">Total short-term investments</td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid; text-indent: 1px;" align="left">320</td> <td style="border-bottom: #000000 1px solid;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">0</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 2px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">320</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 3px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">0</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid;" align="left">Asset-backed securities</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="right">42</td> <td style="border-bottom: #000000 1px solid;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">(33</td> <td style="border-bottom: #000000 1px solid;" align="left">)</td> <td style="border-bottom: #000000 1px solid; text-indent: 2px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">42</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 3px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">(33</td> <td style="border-bottom: #000000 1px solid;" align="left">)</td></tr> <tr valign="bottom"><td style="border-bottom: #000000 3px double; text-indent: 5px;" align="left">Total long-term investments</td> <td style="border-bottom: #000000 3px double;" align="right"> </td> <td style="border-bottom: #000000 3px double;" align="left"> </td> <td style="border-bottom: #000000 3px double;" align="left"> </td> <td style="border-bottom: #000000 3px double;" align="right">$</td> <td style="border-bottom: #000000 3px double;" align="right">42</td> <td style="border-bottom: #000000 3px double;" align="left">$</td> <td style="border-bottom: #000000 3px double;" align="right">(33</td> <td style="border-bottom: #000000 3px double;" align="left">)</td> <td style="border-bottom: #000000 3px double; text-indent: 2px;" align="left">$</td> <td style="border-bottom: #000000 3px double;" align="right">42</td> <td style="border-bottom: #000000 3px double;" align="left"> </td> <td style="border-bottom: #000000 3px double; text-indent: 3px;" align="left">$</td> <td style="border-bottom: #000000 3px double;" align="right"> </td> <td style="border-bottom: #000000 3px double;" align="right">(33</td> <td style="border-bottom: #000000 3px double;" align="left">)</td></tr> <tr><td colspan="16"> </td></tr> <tr valign="bottom"><td align="left"> </td> <td align="right"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" colspan="3" align="center">December 31,</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">2010</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right">2009</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">2008</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td align="left">Gross realized gains</td> <td align="right"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td align="left"> </td> <td style="text-indent: 4px;" align="left">$</td> <td align="right">0</td> <td align="left"> </td> <td style="text-indent: 2px;" align="left">$</td> <td align="right">2</td> <td align="left"> </td> <td style="text-indent: 4px;" align="left">$</td> <td align="right"> </td> <td align="right">6</td> <td align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid;" align="left">Gross realized losses</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 4px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">1</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td> <td style="border-bottom: #000000 1px solid; text-indent: 2px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">(6</td> <td style="border-bottom: #000000 1px solid;" align="left">)</td> <td style="border-bottom: #000000 1px solid; text-indent: 4px;" align="left">$</td> <td style="border-bottom: #000000 1px solid;" align="right">(59)</td> <td style="border-bottom: #000000 1px solid;" align="right">(1</td> <td style="border-bottom: #000000 1px solid;" align="left">)</td></tr></table></div>   <table class="MetaData" border="0" cellspacing="0"> <tr><td valign="top" width="2%" nowrap="nowrap">(1)      </td> <td class="MetaData" width="98%"> Realized losses in 2008 include other-than-temporary impairments of $37 million for financial industry securities and $22 million of losses from the sale of asset-backed debt securities and debt securities of financial institutions as Corning reduced its exposure to these sectors.</td></tr></table> A roll forward of the changes in credit losses recognized in earnings for the twelve months ended December 31, 2010 and nine months ended December 31, 2009 (in millions): <div align="left"> <table border="0" cellspacing="0"> <tr><td width="63%"> </td> <td width="2%"> </td> <td width="20%"> </td> <td width="2%"> </td> <td width="7%"> </td> <td width="2%"> </td></tr> <tr valign="bottom"><td align="left"> </td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">2009</td> <td style="border-bottom: #000000 1px solid;" align="left">*</td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid;" align="left">Beginning balance of credit losses, January 1</td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="right">2</td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="right">0</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid; text-indent: 5px;" align="left">Additions for credit losses not previously recognized in earnings</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">2</td> <td style="border-bottom: #000000 1px solid;" align="right"> </td> <td style="border-bottom: #000000 1px solid;" align="right">2</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr> <tr valign="bottom"><td style="border-bottom: #000000 1px solid;" align="left">Balance of credit losses, December 31</td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="right">4</td> <td style="border-bottom: #000000 1px solid;" align="right">$</td> <td style="border-bottom: #000000 1px solid;" align="right">2</td> <td style="border-bottom: #000000 1px solid;" align="left"> </td></tr></table></div>   <div class="MetaData"> * The standard was implemented April 1, 2009. Therefore, there were no credit losses recognized in the first quarter of 2009.</div> The $2 million loss in 2010 and 2009 represents management's estimate of credit losses inherent in the securities considering projected cash flows using assumptions of delinquency rates, loss severities, and other estimates of future collateral performance. These credit losses are limited to asset-backed securities in our investment portfolio. <div> As of December 31, 2010 and 2009, for securities that have credit losses, an other than temporary impairment loss of $16 million and $14 million, respectively, is recognized in accumulated other comprehensive income. Proceeds from sales and maturities of short-term investments totaled $2.1 billion, $1.3 billion, and $2.1 billion in 2010, 2009, and 2008, respectively.</div></div> </div>3. Available-for-Sale Investments The following is a summary of the fair value of available-for-sale securities (in millions): falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis item represents the entire disclosure related to Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-1 -Paragraph 21 -Subparagraph a, b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 17 -Subparagraph a, b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 19, 20, 21 falsefalseAvailable-for-Sale Investments12Available-for-Sale InvestmentsUnKnownUnKnownUnKnownUnKnownfalsetrue