Consolidated Income Statement (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2012
Income Statement [Abstract]
Net sales	$ 4,243.2us-gaap_SalesRevenueNet	$ 4,123.4us-gaap_SalesRevenueNet	$ 4,014.2us-gaap_SalesRevenueNet
Cost of goods sold	2,513.0us-gaap_CostOfGoodsSold	2,457.6us-gaap_CostOfGoodsSold	2,396.4us-gaap_CostOfGoodsSold
Gross profit	1,730.2us-gaap_GrossProfit	1,665.8us-gaap_GrossProfit	1,617.8us-gaap_GrossProfit
Selling, general and administrative expense	1,122.0	1,075.0	1,039.5
Special charges	5.2mkc_SpecialCharges	25.0mkc_SpecialCharges	0mkc_SpecialCharges
Loss on voluntary pension settlement	0	15.3	0
Operating income	603.0us-gaap_OperatingIncomeLoss	550.5us-gaap_OperatingIncomeLoss	578.3us-gaap_OperatingIncomeLoss
Interest expense	49.7us-gaap_InterestExpense	53.3us-gaap_InterestExpense	54.6us-gaap_InterestExpense
Other income, net	1.1us-gaap_OtherNonoperatingIncomeExpense	2.2us-gaap_OtherNonoperatingIncomeExpense	2.4us-gaap_OtherNonoperatingIncomeExpense
Income from consolidated operations before income taxes	554.4	499.4	526.1
Income taxes	145.9us-gaap_IncomeTaxExpenseBenefit	133.6us-gaap_IncomeTaxExpenseBenefit	139.8us-gaap_IncomeTaxExpenseBenefit
Net income from consolidated operations	408.5mkc_NetIncomeFromConsolidatedOperations	365.8mkc_NetIncomeFromConsolidatedOperations	386.3mkc_NetIncomeFromConsolidatedOperations
Income from unconsolidated operations	29.4	23.2	21.5
Net income	$ 437.9us-gaap_NetIncomeLoss	$ 389.0us-gaap_NetIncomeLoss	$ 407.8us-gaap_NetIncomeLoss
Earnings per share–basic (usd per share)	$ 3.37us-gaap_EarningsPerShareBasic	$ 2.94us-gaap_EarningsPerShareBasic	$ 3.07us-gaap_EarningsPerShareBasic
Earnings per share–diluted (usd per share)	$ 3.34us-gaap_EarningsPerShareDiluted	$ 2.91us-gaap_EarningsPerShareDiluted	$ 3.04us-gaap_EarningsPerShareDiluted

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