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Share-Based Compensation Plans - Measurement assumptions (Details) | 12 Months Ended
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Dec. 31, 2018 BRL (R$) item
Share-Based Compensation Plans |
Number of observations of returns | item | 745
Common stock option plan | Program 3 |
Share-Based Compensation Plans |
Calculation model | Binomial
Asset base price (per share) | R$ 7.73
Expectation of volatility | 40.47%
Dividends expectancy | 3.49%
Risk-free weighted average interest rate | 8.99%
PSO | Minimum |
Share-Based Compensation Plans |
Total shareholder return | 75.00%
PSO | Maximum |
Share-Based Compensation Plans |
Total shareholder return | 125.00%
PSO | SAR 2015 |
Share-Based Compensation Plans |
Calculation model | Monte Carlo
Asset base price (per share) | R$ 42.46
Expectation of volatility | 44.36%
Dividends expectancy | 1.00%
Risk-free weighted average interest rate | 8.72%
PSO | SAR 2016 and PLUS 2016 |
Share-Based Compensation Plans |
Calculation model | Monte Carlo
Asset base price (per share) | R$ 42.46
Expectation of volatility | 44.36%
Dividends expectancy | 1.00%
Risk-free weighted average interest rate | 8.72%
PSO | SAR 2017 and PLUS 2017 |
Share-Based Compensation Plans |
Calculation model | Monte Carlo
Asset base price (per share) | R$ 42.46
Expectation of volatility | 44.36%
Dividends expectancy | 1.00%
Risk-free weighted average interest rate | 8.72%
PSO | SAR 2018 and Plus 2018 |
Share-Based Compensation Plans |
Calculation model | Monte Carlo
Asset base price (per share) | R$ 42.46
Expectation of volatility | 44.36%
Dividends expectancy | 1.00%
Risk-free weighted average interest rate | 8.72%

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- Definition The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2018-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_47_a_i&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The description of the option pricing model used for share options granted. [Refer: Option pricing model [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2018-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_47_a_i&doctype=Standard -URIDate 2018-03-16 + Details
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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 -Name IFRS -Number 2 -IssueDate 2018-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_47_a_i&doctype=Standard -URIDate 2018-03-16 + Details
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- 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 percentage of an expected dividend used to calculate the fair value of share options granted. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2018-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_47_a_i&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The weighted average share price used as input to the option pricing model to calculate the fair value of share options granted. [Refer: Option pricing model [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2018-01-01 -Paragraph 47 -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_47_a_i&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The number of observations of returns used as standard deviation in the calculation of volatility. + References No definition available. + Details
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- Definition A measurement of performance of the Company's stock, expressed as a percentage. + References No definition available. + Details
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