2.0.0.10 false Note 6 - Marketable Securities 00905 - Disclosure - Note 6 - Marketable Securities true false false false 1 usd $ false false Dollars Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 2 Notes to Financial Statements [Abstract] 0 pbra_NotesToFinancialStatementsAbstract pbra false na duration string No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false No definition available. false 3 Note 6 - Marketable Securities 1 us-gaap_MarketableSecuritiesTextBlock us-gaap true na duration string No definition available. false false false false false false false false false false false false 1 false false false false 0 0 <div align="left"> <table style="FONT-SIZE: 9pt; WIDTH: 100%; FONT-FAMILY: ''''''''''''''''''''''Times New Roman''''''''''''''''''''''" cellspacing="0" border="0"> <tr> <td width="2%"></td> <td width="56%"></td> <td width="25%"></td> <td width="15%"></td> </tr> <tr valign="bottom"> <td align="left">6. </td> <td align="left">Marketable Securities </td> <td align="left"> </td> <td align="left"> </td> </tr> <tr valign="bottom"> <td align="left"> </td> <td align="left"> </td> <td align="right">March 31, </td> <td align="right">December 31, </td> </tr> <tr valign="bottom"> <td align="left"> </td> <td align="left"> </td> <td align="right" style="border-bottom:1px solid #000000;">2010 </td> <td align="right" style="border-bottom:1px solid #000000;">2009 </td> </tr> <tr valign="bottom"> <td align="left"> </td> <td align="left"> Marketable securities classification: </td> <td align="left"> </td> <td align="left"> </td> </tr> <tr valign="bottom"> <td align="left"> </td> <td align="left" style="TEXT-INDENT:3.000000px"> Available-for-sale </td> <td align="right">2,557 </td> <td align="right"> 2,551 </td> </tr> <tr valign="bottom"> <td align="left"> </td> <td align="left" style="TEXT-INDENT:3.000000px"> Held-to-maturity </td> <td align="right" style="border-bottom:1px solid #000000;">229 </td> <td align="right" style="border-bottom:1px solid #000000;"> 180 </td> </tr> <tr valign="bottom"> <td align="left"> </td> <td align="left"> </td> <td align="right" style="border-bottom:3px double #000000;">2,786 </td> <td align="right" style="border-bottom:3px double #000000;"> 2,731 </td> </tr> <tr valign="bottom"> <td align="left"> </td> <td align="left"> Less: Current portion of marketable </td> <td align="left"> </td> <td align="left"> </td> </tr> <tr valign="bottom"> <td align="left"> </td> <td align="left"> securities </td> <td align="right" style="border-bottom:1px solid #000000;">(143) </td> <td align="right" style="border-bottom:1px solid #000000;"> (72) </td> </tr> <tr valign="bottom"> <td align="left"> </td> <td align="left"> Long-term portion of marketable securities </td> <td align="right" style="border-bottom:1px solid #000000;">2,643 </td> <td align="right" style="border-bottom:1px solid #000000;"> 2,659 </td> </tr> </table> </div>   Available-for-sale securities are presented as Non-current assets, as they are not expected to be sold or liquidated within the next twelve months. As of March 31, 2010, Petrobras had a balance of US$ 2,394 linked to B Series National Treasury Notes, which are accounted for as available-for-sale securities in accordance with Codification Topic 320. On October 23, 2008, the B Series National Treasury Notes were used as a guarantee after the confirmation of the agreements into with Petros, Petrobras pension plan (see Note 13 (b)). The nominal value of the NTN-Bs is restated based on variations in the Amplified Consumer Price Index (IPCA). The maturities of these notes are 2024 and 2035 and they bear interest coupon of 6% p.a., which is paid semi-annually. At March 31 2010, the balances of the National Treasury Notes - Series B (NTN-B) are updated in accordance with their market value, based on the average prices disclosed by the National Association of Open Market Institutions (ANDIMA). 6.  Marketable Securities          March 31,  December 31,  false false false This item represents the entire disclosure related to Marketable Securities which may consist of all investments in certain debt and equity securities (and other assets). No authoritative reference available. false false 1 2 false UnKnown UnKnown UnKnown false true