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Revenue Recognition - Additional Information (Details 1) $ in Millions	Sep. 30, 2023 USD ($)
Disaggregation of Revenue [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 10,690.0
Transaction price allocated to performance obligations to be satisfied during remaining fiscal 2023	846.3
Transaction price allocated to performance obligations to be satisfied during fiscal 2024	2,890.0
Transaction price allocated to performance obligations to be satisfied revenue after fiscal 2024	$ 6,950.0

X

- Definition

Amount of transaction price allocated to performance obligations expected to be satisfied during subsequent fiscal year.

+ References

No definition available.

+ Details

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X

- Definition

Transaction price allocated to performance obligations expected to be satisfied beyond current fiscal year.

+ References

No definition available.

+ Details

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Namespace Prefix:	osk_
Data Type:	xbrli:monetaryItemType
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X

- Definition

Transaction price allocated to performance obligations to be satisfied during current fiscal year.

+ References

No definition available.

+ Details

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Namespace Prefix:	osk_
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- References

No definition available.

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X

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (a)
-SubTopic 10
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-13

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