Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Income, Net of Tax (Details) (Details) - USD ($) $ in Millions	9 Months Ended
Aug. 31, 2026	Jan. 02, 2026	Nov. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustment	$ (71.3)		$ (269.9)
Unrealized net gain (loss) on cash flow hedges(2)	24.9		(3.2)
Unamortized value of settled interest rate swaps	(0.9)		(1.1)
Pension and other postretirement costs	(90.7)		(88.9)
Accumulated other comprehensive loss attributable to McCormick	(138.0)		$ (363.1)
Increase in foreign currency translation adjustment	198.6
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	28.1
McCormick De Mexico
Accumulated Other Comprehensive Income (Loss) [Line Items]
Equity method investment, ownership percentage		75.00%	50.00%
Cross currency contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Increase in foreign currency translation adjustment	40.6
Cross currency contracts \| Net Investment Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Increase in foreign currency translation adjustment	(2.3)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 4.2

Accumulative other comprehensive income loss unrealized gain loss on foreign currency translation.

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- Definition

Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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- Definition

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source.

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- Definition

Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective interest rate fair value hedge that is amortized upon discontinuation of the interest rate fair value hedge.

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of increase (decrease) in other comprehensive income, after tax, from changes classified as other.

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