Document and Entity Information	12 Months Ended
	Dec. 05, 2012
Risk/Return:
Document Type	485BPOS
Document Period End Date	Dec. 31, 2011
Registrant Name	FIDELITY CONTRAFUND
Central Index Key	0000024238
Amendment Flag	false
Document Creation Date	Dec. 04, 2012
Document Effective Date	Dec. 05, 2012
Prospectus Date	Dec. 05, 2012