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Financial Instruments, Guarantees with Off-Balance-Sheet Risk and Other Guarantees (Tables)
 9 Months Ended
Sep. 30, 2014
Financial Instruments And Guarantees With Off Balance Sheet Risk Disclosure [Abstract]  
Financial instruments with off-balance sheet risk:
As of September 30, 2014, the Company had the following financial instruments with off-balance sheet risk:
 
Reclamation
Obligations
 
Lease
Obligations
 
Workers’
Compensation
Obligations
 
Other (1)
 
Total
 
(Dollars in millions)
Self bonding
$
1,374.3

 
$
—

 
$
—

 
$
—

 
$
1,374.3

Surety bonds
326.2

 
104.4

 
98.1

 
10.6

 
539.3

Bank guarantees
285.4

 
—

 
—

 
121.0

 
406.4

Letters of credit
17.6

 
—

 
34.1

 
85.6

 
137.3

 
$
2,003.5

 
$
104.4

 
$
132.2

 
$
217.2

 
$
2,457.3

(1) 
Other includes the $79.7 million in letters of credit related to Dominion Terminal Associates and TXU Europe Limited described below and an additional $137.5 million in bank guarantees, letters of credit and surety bonds related to collateral for road maintenance, performance guarantees and other operations.