Document And Entity Information - USD ($)	12 Months Ended
	Nov. 30, 2018	Dec. 31, 2018	May 31, 2018
Entity Registrant Name	MCCORMICK & CO INC
Trading Symbol	mkc
Entity Central Index Key	0000063754
Current Fiscal Year End Date	--11-30
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Nov. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Public Float			$ 13,249,735,964
Entity Shell Company	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Common Stock [Member]
Entity Common Stock, Shares Outstanding		9,545,617
Entity Public Float			1,000,702,694
Common Stock Non-Voting [Member]
Entity Common Stock, Shares Outstanding		122,602,644
Entity Public Float			$ 12,249,033,270