Document and Entity Information - USD ($)	12 Months Ended
	Jun. 30, 2017	Jul. 31, 2017	Dec. 31, 2016
Document Document And Entity Information [Abstract]
Entity Registrant Name	BROADRIDGE FINANCIAL SOLUTIONS, INC.
Entity Central Index Key	0001383312
Current Fiscal Year End Date	--06-30
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Amendment Flag	false
Trading Symbol	BR
Entity Common Stock, Shares Outstanding (in shares)		116,475,417
Document and Entity Information	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 7,774,721,987