Document And Entity Information - shares
9 Months Ended
Mar. 31, 2016
May. 02, 2016
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2016  
Entity Registrant Name CDK Global, Inc.  
Entity Central Index Key 0001609702  
Current Fiscal Year End Date --06-30  
Entity Filer Category Non-accelerated Filer  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q3  
Entity Common Stock, Shares Outstanding   155,336,347