Document And Entity Information - USD ($)	12 Months Ended
	Nov. 30, 2017	Dec. 29, 2017	May 31, 2017
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, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Public Float			$ 12,967,012,903
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Common Stock [Member]
Entity Common Stock, Shares Outstanding		10,008,182
Entity Public Float			1,157,886,402
Common Stock Non-Voting [Member]
Entity Common Stock, Shares Outstanding		121,097,928
Entity Public Float			$ 11,809,126,501