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Income Tax Expense - Summary of Deferred Tax (Parenthetical) (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 CNY (¥)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 CNY (¥)
Disclosure of deferred tax assets and liabilities [Line Items]
Beginning balance	¥ 224,479
Ending balance	269,474	$ 38,034	¥ 224,479
PRC withholding tax on dividend income [Member]
Disclosure of deferred tax assets and liabilities [Line Items]
Beginning balance	(106,922)	(15,091)	(100,572)
Provision made to consolidated statement of profit or loss	(30,721)	(4,336)	(29,842)
Utilization	30,721	4,336	23,492
Ending balance	¥ (106,922)	$ (15,091)	¥ (106,922)

X

- Definition

Deferred tax liability (asset) utilization.

+ References

No definition available.

+ Details

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X

- Definition

Disclosure of deferred tax assets and liabilities.

+ References

No definition available.

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X

- Definition

The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2019-01-01
-Paragraph 81
-Subparagraph g
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_g_ii&doctype=Standard
-URIDate 2019-03-27

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X

- Definition

The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2019-01-01
-Paragraph 81
-Subparagraph g
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_g_i&doctype=Standard
-URIDate 2019-03-27

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