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Cover
Jan. 07, 2020
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jan. 07, 2020
Entity File Number 1-31371
Entity Registrant Name Oshkosh Corporation
Entity Central Index Key 0000775158
Entity Tax Identification Number 39-0520270
Entity Incorporation, State or Country Code WI
Entity Address, Address Line One P.O. Box 2566
Entity Address, City or Town Oshkosh
Entity Address, State or Province WI
Entity Address, Postal Zip Code 54903
City Area Code 920
Local Phone Number 235-9151
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock ($0.01 par value)
Trading Symbol OSK
Security Exchange Name NYSE
Entity Emerging Growth Company false