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Segment Information (Tables)
3 Months Ended
Mar. 31, 2013
Segment Reporting [Abstract]  
Operating segment results
Reportable segment results were as follows:
 
 
Three Months Ended March 31,
 
 
2013
 
2012
 
 
(Dollars in millions)
Revenues:
 
 
 
 
Australian Mining
 
$
738.0

 
$
854.1

Western U.S. Mining
 
640.1

 
761.0

Midwestern U.S. Mining
 
336.7

 
347.7

Trading and Brokerage
 
25.9

 
52.5

Corporate and Other
 
7.3

 
5.4

Total
 
$
1,748.0

 
$
2,020.7

 
 
 
 
 
Adjusted EBITDA:
 
 
 
 
Australian Mining
 
$
100.4

 
$
295.6

Western U.S. Mining
 
160.5

 
207.0

Midwestern U.S. Mining
 
112.3

 
109.2

Trading and Brokerage
 
16.0

 
28.1

Corporate and Other
 
(109.1
)
 
(128.4
)
Total
 
$
280.1

 
$
511.5

Reconciliation of Adjusted EBITDA to consolidated (loss) income from continuing operations, net of income taxes
A reconciliation of Adjusted EBITDA to consolidated (loss) income from continuing operations, net of income taxes follows:
 
 
Three Months Ended March 31,
 
 
2013
 
2012
 
 
(Dollars in millions)
Total Adjusted EBITDA
 
$
280.1

 
$
511.5

Depreciation, depletion and amortization
 
170.7

 
142.9

Amortization of basis difference related to equity affiliates
 
1.6

 
2.3

Asset retirement obligation expenses
 
19.0

 
15.0

Interest expense
 
101.3

 
102.0

Interest income
 
(5.9
)
 
(8.1
)
Income tax provision
 
3.7

 
74.4

(Loss) income from continuing operations, net of income taxes
 
$
(10.3
)
 
$
183.0