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v3.23.4

Postretirement Benefits (Narrative) (Details) $ in Millions | 12 Months Ended
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Nov. 30, 2023 USD ($) benefit_program | Nov. 30, 2022 USD ($) | Nov. 30, 2021 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |  |
Number of other minor benefit programs | benefit_program | 2 |  |
Liabilities related to postretirement benefit plan | $ 60.1 | $ 61.4 |
Discounted rate for benefit plan | 5.20% | 4.80% |
2024 | $ 3.1 |  |
2025 | 3.6 |  |
2026 | 4.6 |  |
2027 | 4.7 |  |
2028 | 4.7 |  |
2029-2033 | 24.2 |  |
Supplemental Nonqualified Unfunded Retirement Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Cash surrender value of insurance contracts | 33.1 | $ 35.3 |
Recognized investment gains (losses) on the cash surrender value of the Retirement Plan life insurance contracts | 0.1 | (3.1) | $ (1.1)
Benefits paid | 2.3 | 2.0 | 1.9
Unfunded Death Benefit Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Cash surrender value of insurance contracts | 16.9 | 16.8 |
Recognized investment gains (losses) on the cash surrender value of the Retirement Plan life insurance contracts | $ 0.1 | (1.5) | $ (0.3)
Benefits paid |  | $ 0.7 |

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- Definition Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480266/715-60-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(6) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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