Document and Entity Information	12 Months Ended
	May 31, 2013
Risk/Return:
Document Type	485BPOS
Document Period End Date	Oct. 31, 2012
Registrant Name	ING MUTUAL FUNDS
Central Index Key	0000895430
Amendment Flag	false
Document Creation Date	May 31, 2013
Document Effective Date	May 31, 2013
Prospectus Date	May 31, 2013