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Regulatory Requirements- Narrative (Details) - USD ($) $ in Thousands	May 31, 2025	Nov. 30, 2024
Net Capital Requirements [Line Items]
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	$ 1,051,304	$ 1,132,612
Jefferies International Limited
Net Capital Requirements [Line Items]
Net capital	1,940,000
Excess net capital	1,110,000
Jefferies LLC
Net Capital Requirements [Line Items]
Net capital	1,648,720
Excess net capital	1,510,016
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	164,300
Jefferies Inc
Net Capital Requirements [Line Items]
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	$ 317,100

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- Definition

Net Capital Requirements [Line Items]

+ References

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- 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

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- 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

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Cash and securities deposited in a special reserve account for the exclusive benefit of customers.

+ References

No definition available.

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