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Risks Arising from Financial Instruments - Summary of Floating Rate Debt after Hedging (Detail) | 6 Months Ended | 12 Months Ended
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Jun. 30, 2020 | Dec. 31, 2019
Brazilian Real [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Interest rate | 2.35% | 4.42%
Volatility rates in % | 16.99% | 24.88%
Euro [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Volatility rates in % | 17.24% | 6.43%
US Dollar [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Interest rate | 0.30% | 1.91%
Volatility rates in % | 59.52% | 20.66%
Bottom of range [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Interest rate | 3.00% |
Bottom of range [member] | Brazilian Real [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Possible interest rate 2 | 1.95% | 3.32%
Bottom of range [member] | US Dollar [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Possible interest rate 2 | 0.12% | 1.51%
Top of range [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Interest rate | 4.00% |
Top of range [member] | Brazilian Real [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Possible interest rate 2 | 2.74% | 5.52%
Top of range [member] | US Dollar [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Possible interest rate 2 | 0.47% | 2.30%

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- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_7&doctype=Standard -URIDate 2019-03-27 + Details
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