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SHARE-BASED PAYMENTS - Share option plan (Details) - Share options shares in Millions | 12 Months Ended
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Dec. 31, 2017 shares
Share-based payment transaction |
Ratio of options granted exercisable each year | 33.33
Commencement period for exercise of options | 1 year
Number of common shares available for grant of options | 12.5
Maximum |
Share-based payment transaction |
Aggregate number of shares reserved for issuance | 31.2
The aggregate percentage of common shares reserved for issuance under the plan | 10.00
On or after February 16, 2011 | Maximum |
Share-based payment transaction |
Term of share options | 7 years

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- Definition The commencement date of exercise of options in a share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The contractual life of awards in a share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Maximum percentage of shares that may be issued in accordance with the plan as a proportion of outstanding total number of common shares. + References No definition available. + Details
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- Definition The ratio of options granted that are exercisable by the option holder in share based payment arrangement. + References No definition available. + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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