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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2022
Feb. 14, 2023
Jun. 30, 2022
Cover [Abstract]      
Entity Registrant Name Oshkosh Corporation    
Document Type 10-K    
Trading Symbol OSK    
Current Fiscal Year End Date --12-31    
Entity Common Stock, Shares Outstanding   65,431,763  
Amendment Flag false    
Entity Central Index Key 0000775158    
Entity Filer Category Large Accelerated Filer    
Document Period End Date Dec. 31, 2022    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Shell Company false    
Entity Small Business false    
Entity Emerging Growth Company false    
Security Exchange Name NYSE    
Title of 12(b) Security Common Stock $0.01 par value    
Entity File Number 1-31371    
Entity Incorporation, State or Country Code WI    
Entity Tax Identification Number 39-0520270    
Entity Address, Address Line One 1917 Four Wheel Drive    
Entity Address, City or Town Oshkosh    
Entity Address, State or Province WI    
Entity Address, Postal Zip Code 54902    
City Area Code 920    
Local Phone Number 502-3400    
Document Annual Report true    
Document Transition Report false    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer Yes    
Entity Public Float     $ 5,369,063,686
ICFR Auditor Attestation Flag true    
Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE:

Portions of the Proxy Statement for the 2023 Annual Meeting of Shareholders (to be filed with the Commission under Regulation 14A within 120 days after the end of the registrant’s fiscal year and, upon such filing, to be incorporated by reference into Part III).

    
Auditor Firm ID 34    
Auditor Name Deloitte & Touche LLP    
Auditor Location Milwaukee, WI