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Acquisitions and Disposals - Summary of Net Assets Acquired and Total Payment for Acquisition (Parenthetical) (Detail) - Main Horlicks Acquisition [member] - EUR (€) € in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Jun. 30, 2020
Disclosure of detailed information about business combination [line items] |  |
Business combination equity shares issued for consideration | € 4,845 | € 4,845
Business combination equity shares issued for consideration cash paid | 449 |
Other current assets [Member] |  |
Disclosure of detailed information about business combination [line items] |  |
Business combination financial assets recognised | 463 |
Business combination cash acquired | 36 |
Business combination deferred tax liabilities acquired | € 746 |

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- Definition The amount recognised as of the acquisition date for cash and cash equivalents acquired in a business combination. [Refer: Cash and cash equivalents; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
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- Definition The amount recognised as of the acquisition date for deferred tax liabilities assumed in a business combination. [Refer: Deferred tax liabilities; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
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