Document and Entity Information Document - shares	3 Months Ended	6 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Nov. 07, 2017
Entity Information [Line Items]
Entity Registrant Name		TRIUMPH GROUP INC
Entity Central Index Key		0001021162
Current Fiscal Year End Date		--03-31
Entity Filer Category		Large Accelerated Filer
Document Type		10-Q
Document Period End Date		Sep. 30, 2017
Document Fiscal Year Focus		2018
Document Fiscal Period Focus		Q2
Amendment Flag		false
Entity Common Stock, Shares Outstanding			49,647,572
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes