v3.5.0.2
Document And Entity Information - shares
3 Months Ended
Sep. 30, 2016
Oct. 28, 2016
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2016  
Entity Registrant Name CDK Global, Inc.  
Entity Central Index Key 0001609702  
Current Fiscal Year End Date --06-30  
Entity Filer Category Large Accelerated Filer  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q1  
Entity Common Stock, Shares Outstanding   149,502,299