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The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement.

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Share-based Payments - Issuance of Restricted Shares (Detail) shares in Thousands	May 10, 2016 shares $ / shares	Jul. 21, 2015 shares $ / shares	Dec. 31, 2019
Disclosure of share based payments other than equity instrument [line items]
Grant date	May 10, 2016	July 21, 2015
Restricted shares award agreement [member]
Disclosure of share based payments other than equity instrument [line items]
Number of shares			0
Restricted shares award agreement [member] \| July 21, 2015 [member]
Disclosure of share based payments other than equity instrument [line items]
Type of arrangement		Restricted shares award agreement
Share price on grant date \| $ / shares		$ 36.1
Number of shares \| shares		15,752
Contract period		3 years
Vesting condition		Meet service and performance conditions
Restricted shares award agreement [member] \| May 10, 2016 [member]
Disclosure of share based payments other than equity instrument [line items]
Type of arrangement	Restricted shares award agreement
Share price on grant date \| $ / shares	$ 30.6
Number of shares \| shares	1,548
Contract period	3 years
Vesting condition	Meet service and performance conditions