XML 129 R122.htm IDEA: XBRL DOCUMENT
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Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - BRL (R$) R$ in Millions | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | --- | ---
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | R$ 2,762 | R$ 3,775 | R$ 3,940 | R$ 5,544
Investment Property Completed [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 2,656 | 3,637 | 3,750 | 5,309
Investment Property Completed [member] | Land [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 211 | 279 | 279 | 372
Investment Property Completed [member] | Reservoirs Dams And Water Courses [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 1,234 | 1,761 | 1,830 | 2,261
Investment Property Completed [member] | Buildings Works And Improvements [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 331 | 418 | 437 | 609
Investment Property Completed [member] | Machinery And Equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 874 | 1,172 | 1,192 | 2,053
Investment Property Completed [member] | Vehicles [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 3 | 4 | 8 | 9
Investment Property Completed [member] | Fixtures And Fittings [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 3 | 3 | 4 | 5
Investment Property In Progress [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 106 | 138 | R$ 190 | R$ 235
Gross Carrying Amount [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 7,714 | 12,124 |  |
Gross Carrying Amount [member] | Investment Property Completed [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 7,608 | 11,986 |  |
Gross Carrying Amount [member] | Investment Property Completed [member] | Land [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 225 | 287 |  |
Gross Carrying Amount [member] | Investment Property Completed [member] | Reservoirs Dams And Water Courses [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 3,285 | 5,347 |  |
Gross Carrying Amount [member] | Investment Property Completed [member] | Buildings Works And Improvements [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 1,117 | 1,789 |  |
Gross Carrying Amount [member] | Investment Property Completed [member] | Machinery And Equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 2,936 | 4,519 |  |
Gross Carrying Amount [member] | Investment Property Completed [member] | Vehicles [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 29 | 29 |  |
Gross Carrying Amount [member] | Investment Property Completed [member] | Fixtures And Fittings [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 16 | 15 |  |
Gross Carrying Amount [member] | Investment Property In Progress [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | 106 | 138 |  |
Accumulated Depreciation and Amortisation [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | (4,952) | (8,349) |  |
Accumulated Depreciation and Amortisation [member] | Investment Property Completed [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | (4,952) | (8,349) |  |
Accumulated Depreciation and Amortisation [member] | Investment Property Completed [member] | Land [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | (14) | (8) |  |
Accumulated Depreciation and Amortisation [member] | Investment Property Completed [member] | Reservoirs Dams And Water Courses [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | (2,051) | (3,586) |  |
Accumulated Depreciation and Amortisation [member] | Investment Property Completed [member] | Buildings Works And Improvements [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | (786) | (1,371) |  |
Accumulated Depreciation and Amortisation [member] | Investment Property Completed [member] | Machinery And Equipment [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | (2,062) | (3,347) |  |
Accumulated Depreciation and Amortisation [member] | Investment Property Completed [member] | Vehicles [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | (26) | (25) |  |
Accumulated Depreciation and Amortisation [member] | Investment Property Completed [member] | Fixtures And Fittings [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Net PP&E | R$ (13) | R$ (12) |  |

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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_a&doctype=Standard -URIDate 2017-03-09 + Details
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