v3.26.1
DocumentAndEntityInformation
Jul. 08, 2026
Document Information Line Items  
Entity Central Index Key 0000096223
Document Type 8-K
Document Period End Date Jul. 08, 2026
Entity Registrant Name Jefferies Financial Group Inc.
Entity Incorporation, State or Country Code NY
Entity File Number 001-05721
Entity Tax Identification Number 13-2615557
Entity Address, Address Line One 520 Madison Ave.
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10022
City Area Code 212
Local Phone Number 212-284-2300
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Amendment Flag false
Common Stock [Member]  
Document Information Line Items  
Title of 12(b) Security Voting Common Shares, par value $1 per share
Trading Symbol JEF
Security Exchange Name NYSE
4.850% Senior Notes Due 2027 [Member]  
Document Information Line Items  
Title of 12(b) Security 4.850% Senior Notes Due 2027
Trading Symbol JEF 27A
Security Exchange Name NYSE
5.875% Senior Notes Due 2028 [Member]  
Document Information Line Items  
Title of 12(b) Security 5.875% Senior Notes Due 2028
Trading Symbol JEF 28
Security Exchange Name NYSE
5.125% Senior Notes Due 2031 [Member]  
Document Information Line Items  
Title of 12(b) Security 5.125% Senior Notes Due 2031
Trading Symbol JEF 31
Security Exchange Name NYSE
2.750% Senior Notes Due 2032 [Member]  
Document Information Line Items  
Title of 12(b) Security 2.750% Senior Notes Due 2032
Trading Symbol JEF 32A
Security Exchange Name NYSE
6.200% Senior Notes Due 2034 [Member]  
Document Information Line Items  
Title of 12(b) Security 6.200% Senior Notes Due 2034
Trading Symbol JEF 34
Security Exchange Name NYSE
5.500% Senior Notes Due 2036 [Member]  
Document Information Line Items  
Title of 12(b) Security 5.500% Senior Notes Due 2036
Trading Symbol JEF 36
Security Exchange Name NYSE