Document and Entity Information	6 Months Ended
	Mar. 31, 2012	May 03, 2012
Amendment Description	EXPLANATORY NOTE: We are filing this amendment to update our quarterly report on Form 10-Q for the period ended March 31, 2012 in order to properly accrue $ 70,000 of bonus compensation paid in fiscal Q3 2012 that was subsequently determined to relate to the period ended March 31, 2012.
Entity Registrant Name	NEXT FUEL, INC.
Entity Central Index Key	0001422949
Current Fiscal Year End Date	--09-30
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		10,485,500
Document Type	10-Q
Document Period End Date	Mar. 31, 2012
Amendment Flag	true
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2