Employee Benefit And Retirement Plans (Narrative) (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Nov. 30, 2025	Nov. 30, 2024	Nov. 30, 2023
Employee Benefit And Retirement Plans [Line Items]
Unrecognized actuarial losses and unrecognized prior service credit, before tax	$ 111.6
Unrecognized actuarial losses and unrecognized prior service credit, net of tax	88.9	$ 99.7
Fair value of plan assets at beginning of year	0.0	0.0	$ 0.0
Non-current pension asset	147.3	122.4
Dividends paid	$ 483.0	$ 451.0	418.5
Assumed annual increase in cost of health care benefits	13.80%	7.60%
Ultimate health care cost trend rate	4.50%	4.50%
Long-term Debt, Fair Value	$ 3,505.9	$ 3,677.1
Dividends	491.2	459.1	426.6
Payments of Ordinary Dividends		0.8
Fair Value, Inputs, Level 2 [Member]
Employee Benefit And Retirement Plans [Line Items]
Long-term Debt, Fair Value	$ 104.8	119.8
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	$ 34.9	34.7	29.7
Dividends paid	3.5	3.6
Supplemental Employee Retirement Plan [Member]
Employee Benefit And Retirement Plans [Line Items]
Benefit obligation	72.3	75.1
Non-current pension asset	69.5	73.1
Other Postretirement Benefits [Member]
Employee Benefit And Retirement Plans [Line Items]
Benefit obligation	$ 43.4	$ 45.0	47.1
Age after which employees retire	55 years
Minimum number of years in service	5 years
Assumed discount rate	5.10%	5.20%
Employer contributions	$ 3.7	$ 4.2
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	$ 122.1
Number of shares of McCormick stock held in plan assets	1.8
United States
Employee Benefit And Retirement Plans [Line Items]
Unrecognized actuarial losses and unrecognized prior service credit, net of tax	$ 68.7	84.8
Benefit obligation	673.3	695.0	645.3
Fair value of plan assets at beginning of year	676.7	670.7	630.7
Accrued liability related to the plan	72.2	78.3
Non-current pension asset	75.6	54.0
Funded status	3.4	(24.3)
Accumulated benefit obligation	$ 670.0	$ 692.0
Percentage of pension plan assets in equity securities	100.00%	100.00%
Employer contributions	$ 8.3	$ 9.2
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	37.2	39.6	42.3
United States | Fair Value, Inputs, Level 2 [Member]
Employee Benefit And Retirement Plans [Line Items]
Fair value of plan assets at beginning of year	613.7	592.6
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	81.6	81.2
Foreign Plan [Member]
Employee Benefit And Retirement Plans [Line Items]
Unrecognized actuarial losses and unrecognized prior service credit, net of tax	33.8	31.1
Benefit obligation	211.1	216.9	214.0
Fair value of plan assets at beginning of year	269.4	272.4	267.0
Accrued liability related to the plan	13.3	12.9
Non-current pension asset	71.6	68.4
Funded status	58.3	55.5
Accumulated benefit obligation	$ 208.6	$ 214.5
Percentage of pension plan assets in equity securities	100.00%	100.00%
Employer contributions	$ 0.9	$ 0.8
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	14.3	16.1	$ 15.1
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	$ 264.8	$ 266.0