2.2.0.7 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 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 xbrli:stringItemType string No definition available. false 3 Note 6 - Marketable Securities 1 us-gaap_MarketableSecuritiesTextBlock us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 6. Marketable Securities <div align="left"> <table style="FONT-SIZE: 7pt; WIDTH: 100%; FONT-FAMILY: 'Arial'" cellspacing="0" border="0"> <tr> <td width="74%"></td> <td width="1%"></td> <td width="12%"></td> <td width="1%"></td> <td width="12%"></td> </tr> <tr valign="bottom"> <td align="left"> </td> <td> </td> <td style="BORDER-BOTTOM: #000000 1px solid" align="right">September 30, 2010</td> <td> </td> <td style="BORDER-BOTTOM: #000000 1px solid" align="right">December 31, 2009</td> </tr> <tr> <td colspan="5"> </td> </tr> <tr valign="bottom"> <td align="left">Marketable securities classification:</td> <td> </td> <td align="left"> </td> <td> </td> <td align="left"> </td> </tr> <tr valign="bottom"> <td style="TEXT-INDENT: 12px" align="left">Available-for-sale</td> <td> </td> <td align="right">3,172</td> <td> </td> <td align="right">2,551</td> </tr> <tr valign="bottom"> <td style="TEXT-INDENT: 12px" align="left">Trading</td> <td> </td> <td align="right">6,359</td> <td> </td> <td align="right">-</td> </tr> <tr valign="bottom"> <td style="TEXT-INDENT: 12px" align="left">Held-to-maturity</td> <td> </td> <td style="BORDER-BOTTOM: #000000 1px solid" align="right">156</td> <td> </td> <td style="BORDER-BOTTOM: #000000 1px solid" align="right">180</td> </tr> <tr> <td colspan="5"> </td> </tr> <tr valign="bottom"> <td align="left"> </td> <td> </td> <td style="BORDER-BOTTOM: #000000 3px double" align="right">9,687</td> <td> </td> <td style="BORDER-BOTTOM: #000000 3px double" align="right">2,731</td> </tr> <tr> <td colspan="5"> </td> </tr> <tr valign="bottom"> <td align="left">Less: Current portion of marketable securities</td> <td> </td> <td style="BORDER-BOTTOM: #000000 1px solid" align="right">(6,795)</td> <td> </td> <td style="BORDER-BOTTOM: #000000 1px solid" align="right">(72)</td> </tr> <tr> <td colspan="5"> </td> </tr> <tr valign="bottom"> <td align="left">Long-term portion of marketable securities</td> <td> </td> <td style="BORDER-BOTTOM: #000000 1px solid" align="right">2,892</td> <td> </td> <td style="BORDER-BOTTOM: #000000 1px solid" align="right">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 September 30, 2010, Petrobras had a balance of US$2,601 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 based on variations in the Amplified Consumer Price Index (IPCA). The maturities of these notes are 2024 and 2035 and they bear interest coupons of 6% p.a., which is paid semi-annually. At September 30, 2010, the balances of the National Treasury Notes - Series B (NTN-B) are measured in accordance to their market value, based on the average prices disclosed by the National Association of Open Market Institutions (ANDIMA). During the third quarter of 2010, Petrobras invested a portion of the resources raised from the Global Offering (see note 19) primarily in Brazilian Treasury Securities with original maturity of more than three months. These securities were classified as trading, in accordance with Codification Topic 320, due to the purpose of selling them in the near term. 6. Marketable Securities     September 30, 2010   December false false false us-types:textBlockItemType textblock 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 1 2 false UnKnown UnKnown UnKnown false true