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Employee Benefit And Retirement Plans (Narrative) (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Nov. 30, 2024 | Nov. 30, 2023 | Nov. 30, 2022
Employee Benefit And Retirement Plans [Line Items] |  |  |
Unrecognized actuarial losses and unrecognized prior service credit, before tax | $ 127.2 |  |
Unrecognized actuarial losses and unrecognized prior service credit, net of tax | 99.7 | $ 81.0 |
Fair value of plan assets at beginning of year | 0.0 | 0.0 | $ 0.0
Non-current pension asset | 122.4 | 127.1 |
Dividends paid | $ 451.0 | $ 418.5 | 396.7
Assumed annual increase in cost of health care benefits | 7.60% | 8.50% |
Ultimate health care cost trend rate | 4.50% | 4.50% |
Long-term Debt, Fair Value | $ 3,677.1 | $ 3,841.0 |
Dividends | 459.1 | 426.6 | 402.3
Payments of Ordinary Dividends | 0.8 | 0.9 |
Fair Value, Inputs, Level 2 [Member] |  |  |
Employee Benefit And Retirement Plans [Line Items] |  |  |
Long-term Debt, Fair Value | $ 119.8 | 159.0 |
Defined Contribution Retirement Plans [Member] |  |  |
Employee Benefit And Retirement Plans [Line Items] |  |  |
Percentage of participant contribution considered for first condition of plan | 100.00% |  |
Percentage of participant salary under first condition of plan | 3.00% |  |
Percentage of participant contribution considered for second condition of plan | 66.70% |  |
Percentage of participant salary under second condition of plan | 3.00% |  |
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage | 3.00% |  |
Defined Contribution Plan, Cost | $ 34.7 | 29.7 | 30.5
Dividends paid | 3.6 | 3.8 |
Supplemental Employee Retirement Plan [Member] |  |  |
Employee Benefit And Retirement Plans [Line Items] |  |  |
Benefit obligation | 75.1 | 72.7 |
Non-current pension asset | 73.1 | 70.2 |
Other Postretirement Benefits [Member] |  |  |
Employee Benefit And Retirement Plans [Line Items] |  |  |
Benefit obligation | $ 45.0 | $ 47.1 | 52.9
Age after which employees retire | 55 years |  |
Minimum number of years in service | 5 years |  |
Assumed discount rate | 5.20% | 5.40% |
Employer contributions | $ 4.2 | $ 4.1 |
U.S. Equity Securities [Member] |  |  |
Employee Benefit And Retirement Plans [Line Items] |  |  |
Fair value of McCormick stock held in plan assets |  | $ 35.5 |
Number of shares of McCormick stock held in plan assets |  | 0.6 |
Percentage of pension plan assets in equity securities |  | 5.40% |
Defined Benefit Plan, Equity Securities [Member] | Defined Contribution Retirement Plans [Member] |  |  |
Employee Benefit And Retirement Plans [Line Items] |  |  |
Fair value of McCormick stock held in plan assets | $ 159.5 |  |
Number of shares of McCormick stock held in plan assets | 2.1 |  |
United States |  |  |
Employee Benefit And Retirement Plans [Line Items] |  |  |
Unrecognized actuarial losses and unrecognized prior service credit, net of tax | $ 84.8 | $ 70.4 |
Benefit obligation | 695.0 | 645.3 | 687.5
Fair value of plan assets at beginning of year | 670.7 | 630.7 | 657.7
Accrued liability related to the plan | 78.3 | 76.4 |
Non-current pension asset | 54.0 | 61.7 |
Funded status | (24.3) | (14.6) |
Accumulated benefit obligation | $ 692.0 | $ 641.8 |
Percentage of pension plan assets in equity securities | 100.00% | 100.00% |
Employer contributions | $ 9.2 | $ 8.3 |
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | 39.6 | 42.3 | 42.8
United States | Fair Value, Inputs, Level 2 [Member] |  |  |
Employee Benefit And Retirement Plans [Line Items] |  |  |
Fair value of plan assets at beginning of year | 592.6 | 399.7 |
United States | U.S. Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Employee Benefit And Retirement Plans [Line Items] |  |  |
Fair value of plan assets at beginning of year | 81.2 | 73.0 |
Foreign Plan [Member] |  |  |
Employee Benefit And Retirement Plans [Line Items] |  |  |
Unrecognized actuarial losses and unrecognized prior service credit, net of tax | 31.1 | 28.6 |
Benefit obligation | 216.9 | 214.0 | 220.1
Fair value of plan assets at beginning of year | 272.4 | 267.0 | 275.1
Accrued liability related to the plan | 12.9 | 12.4 |
Non-current pension asset | 68.4 | 65.3 |
Funded status | 55.5 | 53.0 |
Accumulated benefit obligation | $ 214.5 | $ 211.8 |
Percentage of pension plan assets in equity securities | 100.00% | 100.00% |
Employer contributions | $ 0.8 | $ 0.9 |
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | 16.1 | 15.1 | $ 12.3
Foreign Plan [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Employee Benefit And Retirement Plans [Line Items] |  |  |
Fair value of plan assets at beginning of year | $ 266.0 | $ 256.4 |

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