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Regulatory Requirements- Narrative (Details) - USD ($) $ in Thousands	Aug. 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	$ 1,111,620	$ 1,132,612
Jefferies International Limited
Net Capital Requirements [Line Items]
Net capital	2,020,000
Excess net capital	1,150,000
Jefferies LLC
Net Capital Requirements [Line Items]
Net capital	2,204,515
Excess net capital	2,061,318
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	875,600
Jefferies Inc
Net Capital Requirements [Line Items]
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	$ 437,800

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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.

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No definition available.

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