Investments in Associates - Associates of the Company (Detail)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Shandong Pacific Rubber Cable Co., Ltd. [Member]
Disclosure of associates [line items]
Company Name	Shandong Pacific Rubber Cable Co., Ltd. (“SPRC”)
Nature of business	Manufacturing of rubber cable
Country of incorporation	PRC
Percentage of equity interest	25.00%	25.00%
Siam Pacific Holding Company Limited [Member]
Disclosure of associates [line items]
Company Name	Siam Pacific Holding Company Limited (“SPHC”)
Nature of business	Investment & holding company
Country of incorporation	Thailand
Percentage of equity interest	49.00%	49.00%
Loxpac (Thailand) Company Limited [Member]
Disclosure of associates [line items]
Company Name	Loxpac (Thailand) Company Limited (“Loxpac”) (Formerlyknown as “Loxley Pacific Co., Ltd.)
Nature of business	Providing telecommunication service
Country of incorporation	Thailand
Percentage of equity interest	21.39%	21.39%
Loxpac Hong Kong Co., Limited [Member]
Disclosure of associates [line items]
Company Name	Loxpac Hong Kong Co., Limited (“Loxpac HK”) (Formerlyknown as “Loxley Pacific Hong Kong Co., Limited” )
Nature of business	Investment & holding company
Country of incorporation	Hong Kong
Percentage of equity interest	23.10%	23.10%

The country in which an associate of the entity is incorporated. [Refer: Associates [member]]

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The description of the nature of the entity's operations and principal activities.

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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.

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The name of an associate. [Refer: Associates [member]]

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The proportion of ownership interest in an associate attributable to the entity. [Refer: Associates [member]]

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