XML 128 R115.htm IDEA: XBRL DOCUMENT
v3.26.1

Regulatory Requirements - Net Capital and Excess Net Capital (Details) $ in Thousands | Feb. 28, 2026 USD ($)
--- | ---
Jefferies LLC |
Net Capital Requirements [Line Items] |
Net Capital | $ 1,448,011
Excess Net Capital | 1,277,695
JFSI - SEC |
Net Capital Requirements [Line Items] |
Net Capital | 333,245
Excess Net Capital | 298,800
JFSI - CFTC |
Net Capital Requirements [Line Items] |
Net Capital | 333,245
Excess Net Capital | 300,126
JIL |
Net Capital Requirements [Line Items] |
Net Capital | 2,095,104
Excess Net Capital | 1,045,119
Jefferies GmbH |
Net Capital Requirements [Line Items] |
Net Capital | 386,316
Excess Net Capital | $ 158,187

X
- Definition Net Capital Requirements [Line Items] + References No definition available. + Details
Name: | jef_NetCapitalRequirementsLineItems
Namespace Prefix: | jef_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of net capital in excess of minimum required net capital, calculated under Alternative Standard. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Rule 15c3-1 -Number 240 -Section 15c3-1 -Publisher SEC + Details
Name: | srt_AlternativeExcessNetCapital
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of net capital of broker-dealer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Rule 15c3-1 -Number 240 -Section 15c3-1 -Publisher SEC + Details
Name: | srt_NetCapital
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=jef_JefferiesLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=jef_JefferiesFinancialServicesInc.SECMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=jef_JefferiesFinancialServicesIncCFTCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=jef_JILMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=jef_JefferiesGmbHMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |