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Loans, Debentures, and Finance Leases - Additional Information (Detail) $ in Millions |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 06, 2016 BRL (R$) | Dec. 31, 2018 BRL (R$) | May 31, 2018 | Mar. 31, 2018 | Oct. 31, 2017 | Jul. 31, 2017 | Apr. 30, 2017 | May 31, 2016 | Mar. 31, 2015 | Jan. 31, 2014 | Dec. 31, 2018 BRL (R$) | Dec. 31, 2018 USD ($) | Dec. 24, 2018 USD ($) | Dec. 31, 2017 BRL (R$) | Dec. 31, 2018 USD ($) | Oct. 06, 2016 USD ($)
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 1,531,000,000 |  | $ 395 |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  |  |  | 104.4% of CDI |  |  |
Determination of required maintenance ratio description |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |
Financing guaranteed by collateral |  |  |  |  |  |  |  |  |  |  | R$ 69,822,000 |  |  | R$ 66,337,000 |  |
Amount of guarantees and promissory notes |  | R$ 10,667,175,000 |  |  |  |  |  |  |  |  | 10,667,175,000 |  |  | 9,587,971,000 |  |
Collateral guarantees to secure letters of credits |  | 271,162,000 |  |  |  |  |  |  |  |  | 271,162,000 |  |  | 237,537,000 |  |
Guarantee related to supply Of LPG |  |  |  |  |  |  |  |  |  |  | 45,000,000 |  |  |  |  |
Supply of row materials without guarantee |  |  |  |  |  |  |  |  |  |  |  |  |  | 81,046,000 |  |
maximum amount of future payments on collateral gurantee |  | 2,750,000 |  |  |  |  |  |  |  |  | 2,750,000 |  |  | 8,224,000 |  |
Restricted Assets [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restriction on encumbrance of assets |  | R$ 581,000,000 |  |  |  |  |  |  |  |  | R$ 581,000,000 |  |  |  | $ 150 |
Percent restricted consolidated tangible assets |  |  |  |  |  |  |  |  |  |  | 15.00% | 15.00% |  |  |  |
Ultrapar international sa [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 5.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.25%
Notes to foreign market | R$ 2,906,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 750
Borrowings, maturity date | October 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue percent of face value | 98.097% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Northeast Constitutional Financing Fund [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  | 10.00% |  |  |  |  |  |  |  |  | 10.00% |  |  |  | 10.00% |
Discount on interest rate |  |  |  |  |  |  |  |  |  |  | 15.00% | 15.00% |  |  |  |
Oxiteno S.A. and Oxiteno Nordeste [member] | Export Credit Note [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  | 101.5% of CDI |  |  |  |  |  |  |  |  |  |  |  |  |
Long term interest rate [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long term interest rate |  | 7.03% |  |  |  |  |  |  |  |  | 7.03% |  |  |  | 7.03% |
Other contingent liabilities [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of collaterals recorded as other payables |  | R$ 68,000 |  |  |  |  |  |  |  |  | R$ 68,000 |  |  | R$ 205,000 |  |
Foreign loans [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, maturity date |  |  |  |  |  |  |  |  |  |  | June 22, 2020 | June 22, 2020 |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 232,000,000 | $ 60 |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  | 105.9% of CDI | 105.9% of CDI |  |  |  |
Borrowings, adjustment to interest rate basis |  | 2.00% |  |  |  |  |  |  |  |  | 2.00% |  |  |  | 2.00% |
Debentures second issue [member] | IPP [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Simple nominative nonconvertible unsecured registered debentures |  |  |  |  |  |  |  |  |  | 80,000 |  |  |  |  |  |
Debentures fifth issue [member] | IPP [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Simple nominative nonconvertible unsecured registered debentures |  |  |  |  |  |  | 660,139 |  | 80,000 |  |  |  |  |  |  |
Second series simple nominative nonconvertible unsecured registered debentures |  |  |  |  |  |  | 352,361 |  |  |  |  |  |  |  |  |
Debentures fourth issue [member] | IPP [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Simple nominative nonconvertible unsecured registered debentures |  |  |  |  |  |  |  | 500 |  |  |  |  |  |  |  |
Debentures sixth issue [member] | IPP [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  | 97.3% of CDI |  |  |  |  |  |  | 93.9% of CDI | 93.9% of CDI |  |  |  |
Simple nominative nonconvertible unsecured registered debentures |  |  |  | 1,725,000 |  | 1,500,000 |  |  |  |  |  |  |  |  |  |
Debentures seventh issue [member] | IPP [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Simple nominative nonconvertible unsecured registered debentures |  |  |  |  | 944,077 |  |  |  |  |  |  |  |  |  |  |
Second series simple nominative nonconvertible unsecured registered debentures |  |  |  |  | 213,693 |  |  |  |  |  |  |  |  |  |  |
Debentures eighth issue [member] | IPP [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Simple nominative nonconvertible unsecured registered debentures |  | 660,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Second series simple nominative nonconvertible unsecured registered debentures |  | 240,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debenture three [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 1,000,000,000 |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  | 105.0% of CDI | 105.0% of CDI |  |  |  |
Final maturity |  |  |  |  |  |  |  |  |  |  | May 25, 2021 | May 25, 2021 |  |  |  |
Payment of the face value |  |  |  |  |  |  |  |  |  |  | Annual as from May 2019 | Annual as from May 2019 |  |  |  |
Payment of interest |  |  |  |  |  |  |  |  |  |  | Semiannually | Semiannually |  |  |  |
Reprice |  |  |  |  |  |  |  |  |  |  | Not applicable | Not applicable |  |  |  |
Debenture four [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 1,000,000 |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  | 95% of CDI | 95% of CDI |  |  |  |
Final maturity |  |  |  |  |  |  |  |  |  |  | April 18, 2022 | April 18, 2022 |  |  |  |
Payment of the face value |  |  |  |  |  |  |  |  |  |  | Lump sum at final maturity | Lump sum at final maturity |  |  |  |
Payment of interest |  |  |  |  |  |  |  |  |  |  | Semiannually | Semiannually |  |  |  |
Reprice |  |  |  |  |  |  |  |  |  |  | Not applicable | Not applicable |  |  |  |
Amount: |  | R$ 660,139,000 |  |  |  |  |  |  |  |  | R$ 660,139,000 |  |  |  |  |
Debenture five [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 1,000,000 |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  | IPCA + 4.68% | IPCA + 4.68% |  |  |  |
Final maturity |  |  |  |  |  |  |  |  |  |  | April 15, 2024 | April 15, 2024 |  |  |  |
Payment of the face value |  |  |  |  |  |  |  |  |  |  | Lump sum at final maturity | Lump sum at final maturity |  |  |  |
Payment of interest |  |  |  |  |  |  |  |  |  |  | Annually | Annually |  |  |  |
Reprice |  |  |  |  |  |  |  |  |  |  | Not applicable | Not applicable |  |  |  |
Amount: |  | 352,361,000 |  |  |  |  |  |  |  |  | R$ 352,361,000 |  |  |  |  |
Debenture six [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 1,000,000 |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  | 105.0% of CDI | 105.0% of CDI |  |  |  |
Final maturity |  |  |  |  |  |  |  |  |  |  | July 28, 2022 | July 28, 2022 |  |  |  |
Payment of the face value |  |  |  |  |  |  |  |  |  |  | Annual as from July 2021 | Annual as from July 2021 |  |  |  |
Payment of interest |  |  |  |  |  |  |  |  |  |  | Annually | Annually |  |  |  |
Reprice |  |  |  |  |  |  |  |  |  |  | Not applicable | Not applicable |  |  |  |
Debenture seven [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 1,000,000 |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  | 95% of CDI | 95% of CDI |  |  |  |
Final maturity |  |  |  |  |  |  |  |  |  |  | October 24, 2022 | October 24, 2022 |  |  |  |
Payment of the face value |  |  |  |  |  |  |  |  |  |  | Lump sum at final maturity | Lump sum at final maturity |  |  |  |
Payment of interest |  |  |  |  |  |  |  |  |  |  | Semiannually | Semiannually |  |  |  |
Reprice |  |  |  |  |  |  |  |  |  |  | Not applicable | Not applicable |  |  |  |
Amount: |  | 730,384,000 |  |  |  |  |  |  |  |  | R$ 730,384,000 |  |  |  |  |
Debenture eight [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 1,000,000 |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  | IPCA + 4.34% | IPCA + 4.34% |  |  |  |
Final maturity |  |  |  |  |  |  |  |  |  |  | October 24, 2024 | October 24, 2024 |  |  |  |
Payment of the face value |  |  |  |  |  |  |  |  |  |  | Lump sum at final maturity | Lump sum at final maturity |  |  |  |
Payment of interest |  |  |  |  |  |  |  |  |  |  | Annually | Annually |  |  |  |
Reprice |  |  |  |  |  |  |  |  |  |  | Not applicable | Not applicable |  |  |  |
Amount: |  | 213,693,000 |  |  |  |  |  |  |  |  | R$ 213,693,000 |  |  |  |  |
Debenture twelve [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 1,000,000 |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  | IPCA + 4.61% | IPCA + 4.61% |  |  |  |
Final maturity |  |  |  |  |  |  |  |  |  |  | December 15, 2025 | December 15, 2025 |  |  |  |
Payment of the face value |  |  |  |  |  |  |  |  |  |  | Lump sum at final maturity | Lump sum at final maturity |  |  |  |
Payment of interest |  |  |  |  |  |  |  |  |  |  | Annually | Annually |  |  |  |
Reprice |  |  |  |  |  |  |  |  |  |  | Not applicable | Not applicable |  |  |  |
Amount: |  | 240,000,000 |  |  |  |  |  |  |  |  | R$ 240,000,000 |  |  |  |  |
Debenture eleven [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 1,000,000 |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  | 97.5% of CDI | 97.5% of CDI |  |  |  |
Final maturity |  |  |  |  |  |  |  |  |  |  | December 18, 2023 | December 18, 2023 |  |  |  |
Payment of the face value |  |  |  |  |  |  |  |  |  |  | Lump sum at final maturity | Lump sum at final maturity |  |  |  |
Payment of interest |  |  |  |  |  |  |  |  |  |  | Semiannually | Semiannually |  |  |  |
Reprice |  |  |  |  |  |  |  |  |  |  | Not applicable | Not applicable |  |  |  |
Amount: |  | R$ 660,000,000 |  |  |  |  |  |  |  |  | R$ 660,000,000 |  |  |  |  |
Debenture one [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 10,000,000 |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  | 107.9% of CDI | 107.9% of CDI |  |  |  |
Final maturity |  |  |  |  |  |  |  |  |  |  | December 20, 2018 | December 20, 2018 |  |  |  |
Payment of the face value |  |  |  |  |  |  |  |  |  |  | Lump sum at final maturity | Lump sum at final maturity |  |  |  |
Payment of interest |  |  |  |  |  |  |  |  |  |  | Semiannually | Semiannually |  |  |  |
Reprice |  |  |  |  |  |  |  |  |  |  | Not applicable | Not applicable |  |  |  |
Debenture two [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 10,000,000 |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  | 108.25% of CDI | 108.25% of CDI |  |  |  |
Final maturity |  |  |  |  |  |  |  |  |  |  | March 16, 2018 | March 16, 2018 |  |  |  |
Payment of the face value |  |  |  |  |  |  |  |  |  |  | Lump sum at final maturity | Lump sum at final maturity |  |  |  |
Payment of interest |  |  |  |  |  |  |  |  |  |  | Semiannually | Semiannually |  |  |  |
Reprice |  |  |  |  |  |  |  |  |  |  | Not applicable | Not applicable |  |  |  |
Debenture ten [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Summary of loans debentures and finance leases [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |  |  |  | R$ 1,000.00 |  |  |  |  |
Floating interest rates in dollar change in foreign loan |  |  |  |  |  |  |  |  |  |  | 105.25% of CDI | 105.25% of CDI |  |  |  |
Final maturity |  |  |  |  |  |  |  |  |  |  | March 5, 2023 | March 5, 2023 |  |  |  |
Payment of the face value |  |  |  |  |  |  |  |  |  |  | Lump sum at final maturity | Lump sum at final maturity |  |  |  |
Payment of interest |  |  |  |  |  |  |  |  |  |  | Semiannually | Semiannually |  |  |  |
Reprice |  |  |  |  |  |  |  |  |  |  | Not applicable | Not applicable |  |  |  |

X
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- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_7&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The maturity of borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_7&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount in the consolidated financial statements of the liabilities of the group to which significant restrictions (for example, statutory, contractual and regulatory restrictions) apply on the entity's ability to settle the liabilities of the group. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2018-01-01 -Paragraph 13 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_13_c&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of notes and debentures issued by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of guarantees or collateral provided by the entity in related party transactions. [Refer: Guarantees [member]; Related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 24 -IssueDate 2018-01-01 -Paragraph 21 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2018-03-01&anchor=para_21_h&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Bonds issue price in percentage. + References No definition available. + Details
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- Definition Collateral assets letters of credit or guarantees. + References No definition available. + Details
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- Definition Amount of Face value. + References No definition available. + Details
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- Definition long-term consolidated debt had the following principal maturity schedule. + References No definition available. + Details
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- Definition Percentage of payment of the face value. + References No definition available. + Details
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- Definition Payment of interest. + References No definition available. + Details
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- Definition Debentures principal amount. + References No definition available. + Details
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- Definition EBITDA To Interest Coverage Ratio Description + References No definition available. + Details
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- Definition Guarantee liabilities. + References No definition available. + Details
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- Definition guarantee obligations Supply of LPG + References No definition available. + Details
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- Definition Guarantees debtors. + References No definition available. + Details
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- Definition Long term debt, interest rate. + References No definition available. + Details
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- Definition Maximum potential amount of future payments on Guarantees + References No definition available. + Details
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- Definition Number of debentures distributed through public offer. + References No definition available. + Details
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- Definition Number of debentures issued + References No definition available. + Details
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- Definition Summary of loans debentures and finance leases. + References No definition available. + Details
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