Document and Entity Information (USD $)	12 Months Ended
	Mar. 31, 2012	Jun. 05, 2012	Sep. 30, 2011
Document and Entity Information
Entity Registrant Name	ALLIANCE ONE INTERNATIONAL, INC.
Entity Central Index Key	0000939930
Current Fiscal Year End Date	--03-31
Entity Filer Category	Accelerated Filer
Document Type	10-K
Document Period End Date	Mar. 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		87,381,035
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 213,186,011