Document And Entity Information
3 Months Ended
Sep. 30, 2015
Oct. 29, 2015
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2015  
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 Q1  
Entity Common Stock, Shares Outstanding   159,427,781