Cover Page - USD ($)	12 Months Ended
	Nov. 30, 2021	Dec. 31, 2021	May 31, 2021
Document Type	10-K
Document Annual Report	true
Document Period End Date	Nov. 30, 2021
Document Transition Report	false
Entity File Number	001-14920
Entity Registrant Name	MCCORMICK & CO INC
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	52-0408290
Entity Address, Address Line One	24 Schilling Road, Suite 1,
Entity Address, City or Town	Hunt Valley,
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	21031
City Area Code	410
Local Phone Number	771-7301
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 23,764,539,252
Entity Central Index Key	0000063754
Document Fiscal Year Focus	2021
Current Fiscal Year End Date	--11-30
Document Fiscal Period Focus	FY
Amendment Flag	false
ICFR Auditor Attestation Flag	true
Common Stock [Member]
Title of 12(b) Security	Common Stock, Par Value $0.01 per share
Trading Symbol	MKC.V
Security Exchange Name	NYSE
Entity Public Float			1,571,749,434
Entity Common Stock, Shares Outstanding		17,789,317
Common Stock Non-Voting [Member]
Title of 12(b) Security	Common Stock Non-Voting, Par Value $0.01 per share
Trading Symbol	MKC
Security Exchange Name	NYSE
Entity Public Float			$ 22,192,789,818
Entity Common Stock, Shares Outstanding		249,742,929