Pension Plans and Postretirement Benefits - Schedule of Assumptions for Pensions Plan (Details) - U.S.	12 Months Ended
Nov. 30, 2020	Nov. 30, 2019
WilTel Plan
Projected benefit obligation:
Discount rate	2.20%	3.00%
Net periodic pension benefit cost:
Discount rate	3.00%	4.35%
Expected long-term return on plan assets	7.00%	7.00%
Jefferies Group Plan
Projected benefit obligation:
Discount rate	2.00%	2.90%
Net periodic pension benefit cost:
Discount rate	2.90%	4.30%
Expected long-term return on plan assets	6.25%	6.25%

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.

+ References

+ Details

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- Definition

Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(3)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2919-114920

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- References

No definition available.

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- Details

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