Date the equity-based award granted, in CCYY-MM-DD format.

No definition available.

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- Definition

For presentations that combine terminations, 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 or that expired.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

Net number of share options (or share units) granted during the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(01)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

+ Details

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- Definition

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

+ References

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- Definition

Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

+ References

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(02)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

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STOCK-BASED COMPENSATION - Stock option activity (Details) - ¥ / shares			12 Months Ended
	Apr. 14, 2021	Jan. 02, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Tranche 9 [Member]
Grant date			Jan. 02, 2014
Options outstanding			0	0
Number of options granted			0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 10 [Member]
Grant date			Jan. 02, 2015
Options outstanding			0
Number of options granted			0	0
Options exercised			0	0
Options cancelled/expired			0	0	0
Options outstanding			0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 11 [Member]
Grant date			Jan. 04, 2016
Options outstanding			0	0
Number of options granted			0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 12 [Member]
Grant date			Apr. 19, 2016
Options outstanding			0	0
Number of options granted			0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 13 [Member]
Grant date			May 16, 2016
Options outstanding			0	0
Number of options granted			0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 14 [Member]
Grant date			Aug. 03, 2016
Options outstanding			0	0
Number of options granted			0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 15 [Member]
Grant date			Jan. 03, 2017
Options outstanding			0	0
Number of options granted			0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 16 [Member]
Grant date			Oct. 02, 2017
Options outstanding			0	0
Number of options granted		36,000	0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 17 [Member]
Grant date			Dec. 22, 2017
Options outstanding			0	0
Number of options granted			0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 18 [Member]
Grant date			Jan. 02, 2018
Options outstanding			0	0
Number of options granted	160,000		0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 19 [Member]
Grant date			Mar. 01, 2018
Options outstanding			0	0
Number of options granted			0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 20 [Member]
Grant date			Jan. 02, 2019
Options outstanding			0	0
Number of options granted			0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 21 [Member]
Grant date			Jan. 02, 2020
Options outstanding			0	0
Number of options granted			0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0
Tranche 22 [Member]
Options outstanding			0	0
Number of options granted			0	0
Options exercised			0	0
Options cancelled/expired			0	0
Options outstanding			0	0	0
Options vested and exercisable			0	0
Weighted average fair value at the grant date (USD)			¥ 0