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Deferred Income Taxes - Additional Information (Detail) - EUR (€) € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Major components of tax expense (income) [abstract] |  |
US tax rate decrease impact in P&L | € (16) |
US tax rate decrease impact in OCI | (8) |
Unused tax losses for which no deferred tax asset recognized | 1,393 | € 1,345
Related tax impact | 356 | € 428
Variance of unrecognized deferred tax assets | 72 |
Effect of US tax rate decrease on unrecognized deferred tax assets | 93 |
Effect of foreign exchange differrence on unrecognized deferred tax assets | 35 |
Increase of unrecognized deferred tax assets on deductible temporary differences and unused tax losses | € (56) |

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- Definition Increase (decrease) in deferred tax recognised in profit or loss due to change in rate. + References No definition available. + Details
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- Definition Increase of unrecognized deferred tax assets on deductible temporary differences and unused tax losses. + References No definition available. + Details
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- Definition Non recognized tax assets. + References No definition available. + Details
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- Definition Tax effect from change in foreign exchange. + References No definition available. + Details
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- Definition Unrecognized deferred tax assets tax effect from change in tax rate. + References No definition available. + Details
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- Definition The increase (decrease) in accumulated deferred tax recognised in other comprehensive income due to change in the tax rate. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_85&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of unused tax losses for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax losses [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_e&doctype=Standard -URIDate 2017-03-09 + Details
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