Document and Entity Information	3 Months Ended
	Sep. 30, 2012	Dec. 20, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	MarketKast, Inc
Entity Central Index Key	0001547521
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Document Type	10-Q
Document Period End Date	Sep. 30, 2012
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		20,126,500