Condensed Consolidated and Combined Statement of Equity (USD $)
In Millions, unless otherwise specified
Total
Common Stock
Additional Paid-in-Capital
Retained Earnings
Treasury Stock
Net Parent Company Investment
Accumulated Other Comprehensive Income
Total CDK Stockholders' Equity
Non-controlling Interest
Stockholders' equity, beginning balance at Jun. 30, 2014 $ 1,809.3 $ 0 $ 0 $ 0 $ 0 $ 1,712.2 $ 85.7 $ 1,797.9 $ 11.4
Common stock, shares outstanding, beginning balance at Jun. 30, 2014 0 0              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Net earnings 143.6     98.7   39.0   137.7 5.9
Foreign currency translation adjustments (40.1)           (40.1) (40.1)  
Net distributions to Parent (271.8)     0   (271.8)   (271.8)  
Dividend paid to ADP at separation (825.0)     0   (825.0)   (825.0)  
Reclassification of parent company investment, shares   160.6              
Reclassification of parent company investment, value 0 1.6 652.8 0   (654.4)   0  
Stock-based compensation expense 12.4   12.4         12.4  
Common stock issued for the exercise of stock-based compensation awards, shares   0.5              
Common stock issued for the exercise of stock-based compensation awards, value 7.1 0 7.1         7.1  
Excess tax benefit from stock-based compensation awards 5.8   5.8         5.8  
Withholding tax payment for stock-based compensation awards (0.9)   (0.9)         (0.9)  
Dividends paid to stockholders (38.8)     (38.8)       (38.8)  
Repurchases of common stock (32.2)       (32.2)     (32.2)  
Dividend payments of CVR to noncontrolling owners (5.4)               (5.4)
Stockholders' equity, ending balance at Mar. 31, 2015 $ 764.0 $ 1.6 $ 677.2 $ 59.9 $ (32.2) $ 0 $ 45.6 $ 752.1 $ 11.9
Common stock, shares outstanding, end balance at Mar. 31, 2015 160.4 161.1