XML 39 R30.htm IDEA: XBRL DOCUMENT
v3.22.2

Share-based Payments (Tables) | 9 Months Ended
--- | ---
Jun. 30, 2022
Share-based Payments |
Schedule of stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2022 | ​ | 2021
​ | ​ | Shares of stock | ​ | Weighted average | ​ | Shares of stock | ​ | Weighted average
​ |  | under options |  | exercise price |  | under options |  | exercise price
​ | ​ | (in millions) | ​ | ​ | ​ | ​ | (in millions) | ​ | ​ | ​
Outstanding at September 30 | ​ | 0.3 | ​ | $ | 38.72 | ​ | 0.4 | ​ | $ | 36.41
Options granted | ​ | — | ​ | ​ | — | ​ | — | ​ | ​ | —
Options exercised | ​ | — | ​ | ​ | — | ​ | (0.1) | ​ | ​ | 31.62
Options forfeited or expired | ​ | — | ​ | ​ | — | ​ | — | ​ | ​ | —
Outstanding at June 30 | ​ | 0.3 | ​ | ​ | 38.72 | ​ | 0.3 | ​ | ​ | 38.72
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Vested and expected to vest in the future as of June 30 | ​ | 0.2 | ​ | $ | 38.72 | ​ | 0.2 | ​ | $ | 38.72

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration