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Share Buyback Programme - Additional Information (Detail) - EUR (€) € in Millions, shares in Millions |  | 12 Months Ended
--- | --- | ---
Nov. 06, 2017 | Dec. 31, 2017
Equity [Abstract] |  |
Share buyback programme amount | € 5,000 |
Number of shares repurchased |  | 101,942,383
Cash consideration |  | € 5,014

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- References No definition available. + Details
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- Definition Consideration paid for share buy back programme. + References No definition available. + Details
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- Definition Number of treasury shares repurchased. + References No definition available. + Details
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- Definition Value for announced share buyback programme. + References No definition available. + Details
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