XML 88 R71.htm IDEA: XBRL DOCUMENT
v3.21.2

Stock-Based Compensation - Schedule of Equity-Based Compensation Plans (Details) - $ / shares | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018
Equity-based compensation plans |  |  |  |
Number of Securities to be Issued Upon Exercise of Outstanding Options or Vesting of Performance Share Awards (in shares) | 1,115,679 |  |  |
Weighted-Average Exercise Price of Outstanding Options (in dollars per share) | $ 77.96 | $ 74.38 | $ 62.62 | $ 57.03
Number of Securities Remaining Available for Future Issuance Under Equity Compensation Plans (in shares) | 3,310,992 |  |  |
Equity compensation plans approved by security holders [Member] |  |  |  |
Equity-based compensation plans |  |  |  |
Number of Securities to be Issued Upon Exercise of Outstanding Options or Vesting of Performance Share Awards (in shares) | 1,115,679 |  |  |
Weighted-Average Exercise Price of Outstanding Options (in dollars per share) | $ 77.96 |  |  |
Number of Securities Remaining Available for Future Issuance Under Equity Compensation Plans (in shares) | 3,310,992 |  |  |
Equity Compensation Plans Not Approved By Security Holders [Member] |  |  |  |
Equity-based compensation plans |  |  |  |
Number of Securities to be Issued Upon Exercise of Outstanding Options or Vesting of Performance Share Awards (in shares) | 0 |  |  |
Weighted-Average Exercise Price of Outstanding Options (in dollars per share) | $ 0 |  |  |
Number of Securities Remaining Available for Future Issuance Under Equity Compensation Plans (in shares) | 0 |  |  |

X
- Definition Represents the number of shares (or other type of equity) to be issued under the equity-based compensation plan. + References No definition available. + Details
Name: | osk_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesToBeIssued
Namespace Prefix: | osk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the remaining number of shares (or other type of equity) available for future issuance under the equity-based compensation plan. + References No definition available. + Details
Name: | osk_ShareBasedCompensationArrangementByShareBasedPaymentAwardRemainingNumberOfSharesAvailableForFutureIssuance
Namespace Prefix: | osk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + 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 (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_PlanNameAxis=osk_EquityCompensationPlansApprovedBySecurityHoldersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=osk_EquityCompensationPlansNotApprovedBySecurityHoldersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |