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Long-term Debt (Tables)
3 Months Ended
Mar. 31, 2015
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments
Amounts borrowed, outstanding letters of credit and amounts available to borrow, net of certain reserves required under the Credit Facility, were as follows (in millions):
 
March 31,
2015
 
December 31,
2014
Amounts borrowed
$
1.0

 
$
55.9

Outstanding letters of credit
18.5

 
17.4

Amounts available to borrow (1)
170.0

 
114.8

______________________________________________
(1)
Excluding $100 million expansion feature.
Long-term debt consists of the following (in millions):  
 
March 31,
2015

December 31,
2014
Amounts borrowed (Credit Facility)
$
1.0

 
$
55.9

Obligations under capital leases
15.0

 
12.3

Total long-term debt
$
16.0

 
$
68.2