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Goodwill and Intangible Assets - Summary of Key Assumptions Used in Discounted Cash Flow (Detail) | 12 Months Ended
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Dec. 31, 2017
Foods [member] | Europe [member] |
Disclosure of detailed information about intangible assets [Line Items] |
Longer-term sustainable growth rates | 0.90%
Average near-term nominal growth rates | (2.10%)
Average operating margins | 17.00%
Foods [member] | The Americas [member] |
Disclosure of detailed information about intangible assets [Line Items] |
Longer-term sustainable growth rates | 1.50%
Average near-term nominal growth rates | 3.80%
Average operating margins | 21.00%
Foods [member] | Asia/AMET/RUB [member] |
Disclosure of detailed information about intangible assets [Line Items] |
Longer-term sustainable growth rates | 3.90%
Average near-term nominal growth rates | 6.30%
Average operating margins | 18.00%
Personal care [member] | The Americas [member] |
Disclosure of detailed information about intangible assets [Line Items] |
Longer-term sustainable growth rates | 1.50%
Average near-term nominal growth rates | 4.70%
Average operating margins | 20.00%

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