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Deferred tax assets | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Deferred Taxes [Abstract] |
Disclosure of deferred taxes [text block] | 22 Deferred tax assets Deferred tax assets are stated net of amounts of deferred tax liabilities that can be offset for €4,269 million (€4,286 million at December 31, 2016).
(€ million) |  | Deferred tax assets |  | Provisions for impairments |  | Total
Amount at December 31, 2016 |  |  | 9,412 |  |  |  | (5,622 | ) |  |  | 3,790 |
Additions |  |  | 2,341 |  |  |  | (212 | ) |  |  | 2,129 |
Deductions |  |  | (1,588 | ) |  |  | 349 |  |  |  | (1,239 | )
Currency translation differences |  |  | (862 | ) |  |  | 202 |  |  |  | (660 | )
Other changes |  |  | 37 |  |  |  | 21 |  |  |  | 58 |
Amount at December 31, 2017 |  |  | 9,340 |  |  |  | (5,262 | ) |  |  | 4,078 |
Deferred tax assets related for €2,070 million (€1,690 million at December 31, 2016) to the parent company Eni SpA and other Italian subsidiaries that were part of the consolidated accounts for Italian tax purposes. Those assets were recorded on the pre-tax loss of the year and on the recognition of deferred deductible expenses within the limits of the amounts expected to be recovered in future years based on availability of expected future taxable profit. Deferred tax assets are further described in note 32 — Deferred tax liabilities. Income taxes are described in note 43 — Income taxes.

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- Definition The disclosure of deferred taxes. [Refer: Deferred tax liabilities; Deferred tax assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_10_e&doctype=Standard -URIDate 2017-03-09 + Details
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