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SHARE-BASED COMPENSATION - Summary of assumptions to estimate fair value of options at date of grant (Detail) - ¥ / shares	1 Months Ended
	Nov. 30, 2020	Nov. 30, 2019	Oct. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions And Methodology [Abstract]
Average risk-free rate of interest			3.32%
Average risk-free rate of interest, Minimum	0.23%	1.57%
Average risk-free rate of interest, Maximum	0.60%	1.69%
Estimated volatility rate			44.32%
Estimated volatility rate, Minimum	49.74%	42.86%
Estimated volatility rate, Maximum	53.91%	45.28%
Exercise multiples	2.80%	2.80%	2.80%
Dividend yield	0.00%	0.00%	0.00%
Time to maturity			4 years 6 months
Time to maturity, Minimum	0 years	0 years
Time to maturity, Maximum	3 years	3 years
Fair value per underlying ordinary share	¥ 18.33	¥ 53.43	¥ 88.13

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Share based compensation arrangement by share based payment award fair value assumptions exercise multiples.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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Price of a single share of a number of saleable stocks of a company.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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