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Borrowings - Summary of Bank Loans (Parenthetical) (Detail) - Bank loans [member]	Dec. 31, 2017	Dec. 31, 2016
Syndicated bank loans [Member]
Disclosure of detailed information about borrowings [line items]
Annual interest rates		2.55%
Syndicated bank loans [Member] | Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Annual interest rates	2.61%
Syndicated bank loans [Member] | Top of range [member]
Disclosure of detailed information about borrowings [line items]
Annual interest rates	2.70%
Other loans [Member] | Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Annual interest rates	0.93%	0.74%
Other loans [Member] | Top of range [member]
Disclosure of detailed information about borrowings [line items]
Annual interest rates	2.10%	4.48%
Mortgage loans [Member] | Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Annual interest rates	4.95%	4.95%
Mortgage loans [Member] | Top of range [member]
Disclosure of detailed information about borrowings [line items]
Annual interest rates	5.39%	5.39%

X

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 7
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-URIDate 2017-03-09

+ Details

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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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