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Equity settled share-based transactions - Fair value of RSUs and key assumptions (Details) - Restricted Share Units	12 Months Ended
	Dec. 31, 2021 $ / shares
Fair value of share options and key assumptions
Exercise price	$ 0.01
Expected option life	1 year
Expected dividends	0.00%
Likelihood of achieving a redemption event	5
Likelihood of achieving a liquidity event	5
Bottom of range [member]
Fair value of share options and key assumptions
Fair value at measurement date	$ 13.89
Share price	$ 13.89
Expected volatility	41.03%
Risk-free interest rate	1.00%
Top of range [member]
Fair value of share options and key assumptions
Fair value at measurement date	$ 18.91
Share price	$ 18.91
Expected volatility	44.26%
Risk-free interest rate	1.13%

X

- Definition

The exercise price of other equity instruments granted.

+ References

No definition available.

+ Details

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X

- Definition

The percentage of an expected dividend used to calculate the fair value of other equity instruments granted.

+ References

No definition available.

+ Details

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X

- Definition

The option life of other equity instruments granted.

+ References

No definition available.

+ Details

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X

- Definition

The expected volatility of the share price used to calculate the fair value of the other equity instruments 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

No definition available.

+ Details

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- Definition

The fair value share price used as input to the option pricing model to calculate the fair value of other equity instruments granted.

+ References

No definition available.

+ Details

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X

- Definition

The likelihood of achieving a liquidity event, used as input to the option pricing model to calculate the fair value of other equity instruments granted.

+ References

No definition available.

+ Details

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X

- Definition

The likelihood of achieving a redemption event, used as input to the option pricing model to calculate the fair value of other equity instruments granted.

+ References

No definition available.

+ Details

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X

- Definition

The risk-free interest used to calculate the fair value of other equity instruments granted.

+ References

No definition available.

+ Details

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X

- Definition

The weighted average share price used as input to the option pricing model to calculate the fair value of other equity instruments granted.

+ References

No definition available.

+ Details

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- Details

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