Financial Risk Management Objectives and Policies - Exposures to Foreign Currency (Detail) ¥ in Thousands	Dec. 31, 2017 CNY (¥)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 CNY (¥)
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Held for trading investment	¥ 24,714	$ 3,905,000	¥ 12,181
Cash and bank balances	6,029,207	952,572,000	4,052,957
Financial liabilities	(9,060,142)	(1,431,438,000)	(7,581,144)
Trade and other payables	(7,624,496)	(1,204,616,000)	(6,981,815)
Foreign currency risk [Member] \| Singapore Dollar [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Held for trading investment	24,714		12,181
Trade and other receivables	725		957
Cash and bank balances	418,875		117,763
Financial liabilities	(14,715)		(33,686)
Trade and other payables	(13,748)		(12,991)
Net assets/(liabilities)	415,851	65,701	84,224
Foreign currency risk [Member] \| Euro [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Trade and other receivables			9,232
Cash and bank balances	1,486		3,841
Trade and other payables	(10,857)		(10,763)
Net assets/(liabilities)	(9,371)	(1,481)	2,310
Foreign currency risk [Member] \| USD [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Trade and other receivables	34,727		15,032
Cash and bank balances	16,068		7,247
Financial liabilities			(104,055)
Trade and other payables	(5,574)		(5,873)
Net assets/(liabilities)	45,221	7,145	(87,649)
Foreign currency risk [Member] \| Renminbi [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Trade and other receivables	469		31,679
Trade and other payables	(35,505)		(1,410)
Net assets/(liabilities)	(35,036)	(5,535)	30,269
Foreign currency risk [Member] \| Others [Member]
Disclosure of nature and extent of risks arising from financial instruments [Line Items]
Trade and other receivables			982
Cash and bank balances	498
Trade and other payables	(24)
Net assets/(liabilities)	¥ 474	$ 75	¥ 982

Cash and bank balances.

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- Definition

The amount of current financial assets measured at fair value through profit or loss classified as held for trading. [Refer: Financial assets at fair value through profit or loss, classified as held for trading]

+ References

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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.

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- Definition

The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Financial liabilities; Derivatives [member]]

+ References

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- Definition

The amount of assets less the amount of liabilities.

+ References

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- Definition

The amount of trade payables and other payables. [Refer: Trade payables; Other payables]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of trade receivables and other receivables. [Refer: Trade receivables; Other receivables]

+ References

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