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Other Gains / (Losses)-Net - Summary of Other Gains/(Losses) Net (Detail) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Analysis of income and expense [abstract] |  |  |
Realized gains / (losses) on derivatives | € 14 |  | € (62)
Unrealized (losses) / gains on derivatives at fair value through profit and loss-net | (84) | € 57 | 71
Unrealized exchange (losses) / gains from the remeasurement of monetary assets and liabilities-net |  | (4) | 3
Gains on pension plan amendments | 36 | 20 |
Gains / (losses) on disposal | 186 | (3) | (10)
Wise purchase price adjustment |  |  | 20
Other | 2 |  | (1)
Total other gains / (losses)-net | € 154 | € 70 | € 21

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- Definition Gains (losses) on pension plan amendments. + References No definition available. + Details
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- Definition Unrealized exchange gains / (losses) from the remeasurement of monetary assets and liabilities, net. + References No definition available. + Details
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- Definition The gains (losses) on disposals of non-current assets. [Refer: Non-current assets] + 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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