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Income Tax - Tax-exemption Information Related to Profits Generated from Certain Projects (Detail) - Construction and expansion of two thousand and nine [member] | 12 Months Ended
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Dec. 31, 2020
Disclosure Of Tax Exemption [line items] |
Tax-exemption Period, Start | 2018
Tax-exemption Period, End | 2022

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- Definition Disclosure Of Tax Exemption [line items] + References No definition available. + Details
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- Details
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