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Debt (Tables)
6 Months Ended
Jun. 30, 2013
Debt Disclosure [Abstract]  
Schedule of the Company's obligations and other indebtedness
The Company is obligated under notes and other indebtedness as follows (in millions):
 
 
June 30,
2013
 
December 31,
2012
Accounts receivable securitization program
$
150.0

 
$
135.0

Secured promissory notes
7.6

 
14.5

Equipment credit facilities


 
12.0

Real estate credit agreement
99.8

 
101.7

Term loan credit facility
125.0

 
125.0

Series C convertible senior debentures
62.4

 
90.1

Revolving credit facilities
114.0

 
31.1

Senior notes
370.0

 
370.0

Related party credit agreements
6.9

 
114.9

Other indebtedness
15.9

 
17.3

 
951.6

 
1,011.6

Less current portion of debt
444.6

 
519.4

Long-term debt
$
507.0

 
$
492.2

Schedule of carrying and fair value of the Series C convertible debentures and Senior Notes
As of June 30, 2013, the carrying and estimated fair value of the Series C convertible senior debentures and Senior Notes were as follows (in millions):
 
 
June 30, 2013
 
December 31, 2012
 
Carrying
Value
 
Estimated
Fair Value
 
Carrying
Value
 
Estimated
Fair Value
Convertible senior debentures - Series C
$
62.4

 
$
76.9

 
$
90.1

 
$
106.7

Senior Notes - Series A
40.0

 
40.8

 
40.0

 
41.1

Senior Notes - Series B
105.0

 
110.3

 
105.0

 
112.3

Senior Notes - Series C
65.0

 
68.6

 
65.0

 
70.4

Senior Notes - Series D
160.0

 
170.9

 
160.0

 
177.2

Total
$
432.4

 
$
467.5

 
$
460.1

 
$
507.7