Cover - shares	6 Months Ended
	Jan. 31, 2023	Mar. 03, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jan. 31, 2023
Document Transition Report	false
Entity File Number	0-7928
Entity Registrant Name	COMTECH TELECOMMUNICATIONS CORP /DE/
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	11-2139466
Entity Address, Address Line One	68 South Service Road
Entity Address, Address Line Two	Suite 230
Entity Address, City or Town	Melville
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	11747
City Area Code	(631)
Local Phone Number	962-7000
Title of 12(b) Security	Common Stock, par value $0.10 per share
Trading Symbol	CMTL
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		27,863,934
Amendment Flag	false
Current Fiscal Year End Date	--07-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2023
Entity Central Index Key	0000023197