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Share Incentive Plan - Schedule of Assumptions Used to Calculate Estimated Fair Value of Options (Details) - Binomial Option Pricing Model	Oct. 20, 2017 ¥ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate, minimum	2.00%
Risk-free interest rate, maximum	2.40%
Volatility, minimum	32.00%
Volatility, maximum	45.00%
Expected dividend yield	0.00%
Fair value of underlying ordinary share	¥ 565.80
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise multiples	2.2
Exercise price	¥ 0.0312
Life of option (years)	6 months 10 days
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise multiples	2.8
Exercise price	¥ 560.95
Life of option (years)	10 years

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- Definition

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

+ References

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- Definition

Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award.

+ References

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

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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- Definition

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

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
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