2.0.0.10 false Balance Sheets Parenthetical (USD $) 00400 - Statement - Balance Sheets Parenthetical 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 false 2 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 4 Shareholders equity 2 us-gaap_StockholdersEquityAbstract us-gaap true 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 2 false false false false 0 0 false false false No definition available. false 5 Preferred share - authorized 3 us-gaap_PreferredStockSharesAuthorized us-gaap true na instant shares No definition available. false false false false false false false false false false false false 1 false true false false 3700729396 3700729396 false false false 2 false true false false 3700729396 3700729396 false false false The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 3, 4, 5, 6, 7, 8 false 6 Preferred share - issued 3 us-gaap_PreferredStockSharesIssued us-gaap true na instant shares No definition available. false false false false false false false false false false false false 1 false true false false 3700729396 3700729396 false false false 2 false true false false 3700729396 3700729396 false false false Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 false 7 Common share - authorized 3 us-gaap_CommonStockSharesAuthorized us-gaap true na instant shares No definition available. false false false false false false false false false false false false 1 false true false false 5073347344 5073347344 false false false 2 false true false false 5073347344 5073347344 false false false The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false 8 Common share - issued 3 us-gaap_CommonStockSharesIssued us-gaap true na instant shares No definition available. false false false false false false false false false false false false 1 false true false false 5073347344 5073347344 false false false 2 false true false false 5073347344 5073347344 false false false Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 false 9 Postretirement benefit reserves adjustments 3 pbra_PostretirementBenefitReservesAdjustments pbra false credit instant monetary No definition available. false false false false false false false false false false false false 1 true true false false -848000000 -848000000 false false false 2 true true false false 19000000 19000000 false false false No definition available. No authoritative reference available. false false 2 6 false NoRounding NoRounding UnKnown false true