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Related Parties - Summarized Changes of Number of Restricted and Performance Shares Granted (Detail) shares in Thousands	12 Months Ended
	Dec. 31, 2018 shares
Summary of related parties [line items]
Balance on December 31, 2017	166,270,000
Shares granted	369,976
Forfeiture of granted shares due to termination of executive employment	(19,886)
Balance on December 31, 2018	369,976,000
April 9, 2018 [member]
Summary of related parties [line items]
Shares granted	103,592,000
September 19, 2018 [member]
Summary of related parties [line items]
Shares granted	80,000,000
September 24, 2018 [member]
Summary of related parties [line items]
Shares granted	40,000,000

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 47
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_47_b&doctype=Standard
-URIDate 2018-03-16

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45&doctype=Standard
-URIDate 2018-03-16

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X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45&doctype=Standard
-URIDate 2018-03-16

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X

- Definition

Number of instruments other equity instruments cancellation of granted shares due to termination of executive employment.

+ References

No definition available.

+ Details

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X

- Definition

Summary of related parties.

+ References

No definition available.

+ Details

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