v3.25.1
Document and Entity Information
Jun. 11, 2025
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jun. 11, 2025
Entity File Number 001-06155
Entity Registrant Name ONEMAIN FINANCE CORPORATION
Entity Central Index Key 0000025598
Entity Incorporation, State or Country Code IN
Entity Tax Identification Number 35-0416090
Entity Address, Address Line One 601 N.W. Second Street
Entity Address, City or Town Evansville
Entity Address, State or Province IN
Entity Address, Postal Zip Code 47708
City Area Code 812
Local Phone Number 424-8031
Entity Emerging Growth Company false
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false