Employee Benefit And Retirement Plans (Narrative) (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Employee Benefit And Retirement Plans [Line Items]
Loss on voluntary pension settlement	$ 0.0	$ 0.0	$ 15.3
Unrecognized actuarial losses and unrecognized prior service credit, before tax	300.2
Unrecognized actuarial losses and unrecognized prior service credit, net of tax	203.1	224.0
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax	298.6
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax	1.6
Expected actuarial losses, net of prior service credit, before tax	16.9
Expected actuarial losses, net of prior service credit, net of tax	11.3
Amortization of net actuarial loss	16.6
Amortization of prior service costs	0.3
Dividends paid	$ 204.9	$ 192.4	179.9
Assumed annual increase in cost of health care benefits	7.10%	7.00%
Ultimate health care cost trend rate	5.00%	5.00%
Ultimate health care cost trend rate, year	2027	2022
United States Pension Plans [Member]
Employee Benefit And Retirement Plans [Line Items]
Loss on voluntary pension settlement	$ 0.0	$ 0.0	15.3
Defined Benefit Plan, Settlements, Plan Assets			63.3
Unrecognized actuarial losses and unrecognized prior service credit, net of tax	140.6	144.0
Amortization of net actuarial loss	16.8	11.8	29.5
Amortization of prior service costs	0.0	0.0	0.0
Benefit obligation	722.0	728.4	607.7
Accrued liability related to the plan	173.4	152.1
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent		0.0
Accumulated benefit obligation	$ 638.8	$ 636.7
Percentage of pension plan assets in equity securities	100.00%	100.00%
International Pension Plans [Member]
Employee Benefit And Retirement Plans [Line Items]
Loss on voluntary pension settlement	$ 0.0	$ 0.0	0.0
Unrecognized actuarial losses and unrecognized prior service credit, net of tax	68.2	82.5
Amortization of net actuarial loss	6.0	4.6	5.6
Amortization of prior service costs	0.3	0.3	0.4
Benefit obligation	308.1	341.6	304.9
Accrued liability related to the plan	23.6	36.6
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	3.8	0.3
Accumulated benefit obligation	$ 281.5	$ 310.9
Percentage of pension plan assets in equity securities	100.00%	100.00%
Supplemental Employee Retirement Plan [Member]
Employee Benefit And Retirement Plans [Line Items]
Benefit obligation	$ 89.6	$ 91.3
Accrued liability related to the plan	86.2	86.7
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	79.5	79.6
Fair value of McCormick stock held in plan assets	$ 178.4
Number of shares of McCormick stock held in plan assets	2.1
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	50.00%
Percentage of participant salary under second condition of plan	2.00%
401(k) plan expense	$ 9.5	8.7	8.2
Dividends paid	3.5
Other Postretirement Benefits [Member]
Employee Benefit And Retirement Plans [Line Items]
Amortization of net actuarial loss	0.0	0.0	1.4
Amortization of prior service costs	0.0	0.0	(1.2)
Benefit obligation	$ 92.4	$ 96.3	94.9
Age after which employees retire	55 years
Minimum number of years in service	5 years
Assumed discount rate	4.20%	4.00%
U.S. Equity Securities [Member]
Employee Benefit And Retirement Plans [Line Items]
Fair value of McCormick stock held in plan assets	$ 39.2		$ 33.0
Number of shares of McCormick stock held in plan assets	0.5		0.5
Percentage of pension plan assets in equity securities	7.20%	5.70%
Dividends paid	$ 0.7