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- Definition

Vesting percentage of shares on fourth anniversary.

+ References

No definition available.

+ Details

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- Definition

Vesting percentage of shares on third anniversary.

+ References

No definition available.

+ Details

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- Definition

The date on which share-based payment arrangements are granted. [Refer: Share-based payment arrangements [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
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- Definition

The description of the maximum term of options granted for a type of share-based payment arrangement that existed at any time during the period. An entity with substantially similar types of share-based payment arrangements may aggregate this information. [Refer: Share-based payment arrangements [member]]

+ References

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

The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Period Type:	duration

- Definition

The description of the vesting requirements for a type of share-based payment arrangement that existed at any time during the period. An entity with substantially similar types of share-based payment arrangements may aggregate this information. [Refer: Share-based payment arrangements [member]]

+ References

+ Details

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Period Type:	duration

- 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.

+ Details

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- Definition

The description of a share-based payment arrangement that existed at any time during the reporting period. [Refer: Share-based payment arrangements [member]]

+ References

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Share-Based Compensation - Additional Information (Detail) - Class_of_Stock	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of terms and conditions of share-based payment arrangement [line items]
Description of share based compensation	The Company currently has two LTI modes stock options and virtual shares.
Option grant date	Last sixty trading days
Number of trading days	10 trading days
Restricted virtual shares [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage of third anniversary grant date		33.00%
Percentage of fourth anniversary grant date		33.00%
Percentage of fifth anniversary grant date		34.00%
Top of range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage adjusted to offset speculation	30.00%
Top of range [member] \| Option Granted For Others [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Option exercise period	P7Y
Phantom Share Plans [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of trading days	30 trading days
Number of classes	2
Phantom Share Plans [member] \| Restricted virtual shares [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage of shares issued	50.00%
Phantom Share Plans [member] \| Virtual performance shares [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Percentage of shares issued	50.00%
Grant Date Four [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting, Conditions	33% after 3 years
Grant Date Five [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting, Conditions	33% after 4 years
Grant Date Six [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting, Conditions	34% after 5 years