Earnings per Share (Tables)
 9 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table summarizes the components of basic and diluted earnings per share:
 
Three Months Ended
 
Nine Months Ended
 
March 31,
 
March 31,

2015

2014

2015
 
2014
Net earnings attributable to CDK
$
56.3

 
$
69.6

 
$
137.7

 
$
176.0










 
 
Weighted-average shares outstanding:








 
 
Basic
160.6


160.6


160.7

 
160.6

Effect of employee stock options
0.7


—


0.4

 
—

Effect of employee restricted stock
0.6


—


0.4

 
—

Diluted
161.9


160.6


161.5

 
160.6










 
 
Basic earnings attributable to CDK per share
$
0.35


$
0.43


$
0.86

 
$
1.10

Diluted earnings attributable to CDK per share
$
0.35


$
0.43


$
0.85

 
$
1.10