Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

+ Details

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ 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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-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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No definition available.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

+ References

No definition available.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

+ References

No definition available.

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- Definition

Number of share options (or share units) exercised during the current period.

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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SHARE-BASED COMPENSATION - Option assumptions and Activity (Details) - Share options ¥ in Millions	12 Months Ended
	Dec. 31, 2020 $ / shares	Dec. 31, 2020 CNY (¥) shares	Dec. 31, 2019 CNY (¥) shares	Dec. 31, 2018 CNY (¥) shares
Number of Options
Share options outstanding at the beginning of the period (in shares) \| shares		47,632
Forfeited (in shares) \| shares		(1,000)
Exercised (in shares) \| shares		(46,632)	(1,088,358)	(876,715)
Share options outstanding at the end of the period (in shares) \| shares			47,632
Weighted Average Exercise Price
Share options outstanding at the beginning of the period (in dollars per shares) \| $ / shares	$ 4.95
Forfeited (in dollars per shares) \| $ / shares	1.53
Exercised (in dollars per shares) \| $ / shares	$ 5.03
Share options outstanding at the end of the period (in dollars per shares) \| $ / shares
Aggregate intrinsic value of options exercised \| ¥		¥ 11	¥ 255	¥ 194