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Acquisitions and Disposals - Additional Information (Detail) - EUR (€) € in Millions | 6 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018
Disclosure of Acquisitions and Disposals [Line Items] |  |
Total consideration for acquisitions | € 654 | € 1,078
Olly Nutrition Member |  |
Disclosure of Acquisitions and Disposals [Line Items] |  |
Acquisition description | The main acquisition in the first half of 2019 was Olly Nutrition, a premium supplements business in the US. |

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- Definition The amount of consideration paid or received in respect of both obtaining and losing control of subsidiaries or other businesses. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2018-01-01 -Paragraph 40 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2018-03-01&anchor=para_40_a&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The description of how the acquirer obtained the power to govern the financial and operating policies of the acquiree so as to obtain benefits from its activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2018-01-01 -Paragraph B64 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_B64_d&doctype=Appendix&seq=2 -URIDate 2018-03-16 + Details
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