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Financial Instruments - Summary of Current Credit Risk Assessment Policies (Detail) - Credit risk [member] | 12 Months Ended
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Dec. 31, 2018
Write-off [member] |
Disclosure of credit risk exposure [line items] |
Description | There is evidence indicating that the debtor is in severe financial difficulty and the Company has no realistic prospect of recovery
Basis for Recognizing Expected Credit Loss | Amount is written off
12-month expected credit losses [member] | Performing [member] |
Disclosure of credit risk exposure [line items] |
Description | Credit rating on trade date and valuation date: (1) Within investment grade (2) Between BB+ and BB-
Basis for Recognizing Expected Credit Loss | 12 months expected credit loss
Lifetime expected credit losses [member] | Doubtful [member] |
Disclosure of credit risk exposure [line items] |
Description | Credit rating on trade date and valuation date: (1) From investment grade to non-investment grade (2) From BB+~BB- to B+~CCC-
Basis for Recognizing Expected Credit Loss | Lifetime expected credit loss-not credit impaired
Lifetime expected credit losses [member] | In default [member] |
Disclosure of credit risk exposure [line items] |
Description | Credit rating CC or below
Basis for Recognizing Expected Credit Loss | Lifetime expected credit loss-credit impaired
Minimum [Member] | 12-month expected credit losses [member] | Performing [member] |
Disclosure of credit risk exposure [line items] |
Expected Credit Loss Ratio | 0.00%
Maximum [Member] | 12-month expected credit losses [member] | Performing [member] |
Disclosure of credit risk exposure [line items] |
Expected Credit Loss Ratio | 0.10%

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph IG20D -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_IG20D&doctype=Implementation%20Guidance -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 35N -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_35N&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Information on how the instruments were grouped if expected credit losses were measured on a collective basis. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 35F -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_35F_c&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Method of assessment of expected credit losses. + References No definition available. + Details
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