Goodwill and Intangible Assets, Net (Tables)
 9 Months Ended
Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes in Goodwill
Changes in goodwill for the nine months ended March 31, 2015 were as follows:
 
Automotive Retail North America
 
Automotive Retail International
 
Digital Marketing
 
Total
Balance as of June 30, 2014
$
400.1

 
$
454.7

 
$
376.1

 
$
1,230.9

Currency translation adjustments
(3.4
)
 
(58.4
)
 
—

 
(61.8
)
Balance as of March 31, 2015
$
396.7

 
$
396.3

 
$
376.1

 
$
1,169.1
Components of Intangible Assets, Net
Components of intangible assets, net were as follows:
 
March 31,
 
June 30,
 
2015
 
2014
 
Original Cost
 
Accumulated Amortization
 
Intangible Assets, net
 
Original Cost
 
Accumulated Amortization
 
Intangible Assets, net
Software
$
110.3

 
$
(94.0
)
 
$
16.3

 
$
103.9

 
$
(87.4
)
 
$
16.5

Client lists
215.0

 
(131.4
)
 
83.6

 
222.1

 
(124.5
)
 
97.6

Trademarks
27.0

 
(23.8
)
 
3.2

 
27.1

 
(7.4
)
 
19.7

Other intangibles
2.4

 
(2.4
)
 
—

 
6.0

 
(6.0
)
 
—

 
$
354.7

 
$
(251.6
)
 
$
103.1

 
$
359.1

 
$
(225.3
)
 
$
133.8
Estimated Amortization Expenses of the Company's Existing Intangible Assets
Estimated amortization expenses of the Company's existing intangible assets as of March 31, 2015 were as follows:
 
Amount
Three months ending June 30, 2015
$
7.2

Twelve months ending June 30, 2016
24.4

Twelve months ending June 30, 2017
18.6

Twelve months ending June 30, 2018
15.2

Twelve months ending June 30, 2019
9.0

Twelve months ending June 30, 2020
7.8

Thereafter
20.9

 
$
103.1