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Earnings Per Share (Tables)
 6 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table sets forth the computation of basic and diluted earnings (loss) per share for the three months and six months ended December 31, 2011 and 2012 (dollars in millions, except share and per share amounts).
 
Three months ended December 31,
 
Six months ended December 31,
 
2011
 
2012
 
2011
 
2012
Numerator for basic and diluted earnings (loss) per share:
 
 
 
 
 
 
 
Income (loss) from continuing operations
$
16.0

 
$
12.2

 
$
(5.6
)
 
$
26.0

Income (loss) from discontinued operations
(0.3
)
 
—

 
(0.4
)
 
0.1

Accretion of redeemable non-controlling interest, net of taxes
—

 
(0.6
)
 
—

 
(1.3
)
Income (loss) available to common stockholders
$
15.7

 
$
11.6

 
$
(6.0
)
 
$
24.8

 
 
 
 
 
 
 
 
Denominator (in thousands):
 
 
 
 
 
 
 
Weighted average shares outstanding - basic
75,325

 
77,421

 
75,090

 
76,559

Effect of dilutive securities
3,407

 
2,204

 
—

 
2,646

Weighted average shares outstanding - diluted
78,732

 
79,625

 
75,090

 
79,205

 
 
 
 
 
 
 
 
Basic earnings (loss) per share:
 
 
 
 
 
 
 
Continuing operations
$
0.22

 
$
0.15

 
$
(0.08
)
 
$
0.32

Discontinued operations
(0.01
)
 
—

 
—

 
—

Basic earnings (loss) per share
$
0.21

 
$
0.15

 
$
(0.08
)
 
$
0.32

 
 
 
 
 
 
 
 
Diluted earnings (loss) per share:
 
 
 
 
 
 
 
Continuing operations
$
0.21

 
$
0.14

 
$
(0.08
)
 
$
0.31

Discontinued operations
(0.01
)
 
—

 
—

 
—

Diluted earnings (loss) per share
$
0.20

 
$
0.14

 
$
(0.08
)
 
$
0.31