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Long-Term Debt (Tables)
3 Months Ended
Mar. 31, 2012
Long-Term Debt [Abstract]  
Long-Term Debt
The activity in our long-term debt from December 31, 2011 to March 31, 2012 is summarized as follows:

 
 
 
 
Three months ended
 
 
 
 
 
 
 
 
 
 
 
March 31, 2012
 
 
 
 
 
Interest
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Rate* at
 
 
December 31,
 
 
 
 
 
New
 
 
March 31,
 
 
March 31,
 
($ in thousands)
 
2011
 
 
Payments
 
 
Borrowings
 
 
2012
 
 
2012
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  Rural Utilities Service
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    Loan Contracts
 
$
10,197
 
 
$
(127
)
 
$
-
 
 
$
10,070
 
 
 
6.15
%
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  Senior Unsecured Debt
 
 
8,325,774
 
 
 
(14,375
)
 
 
-
 
 
 
8,311,399
 
 
 
7.92
%
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  Industrial Development
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     Revenue Bonds
 
 
13,550
 
 
 
-
 
 
 
-
 
 
 
13,550
 
 
 
6.33
%
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TOTAL LONG-TERM DEBT
 
$
8,349,521
 
 
$
(14,502
)
 
$
-
 
 
$
8,335,019
 
 
 
7.92
%
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  Less: Debt Discount
 
 
(49,664
)
 
 
 
 
 
 
 
 
 
 
(45,881
)
 
 
 
 
  Less: Current Portion
 
 
(94,016
)
 
 
 
 
 
 
 
 
 
 
(674,746
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
$
8,205,841
 
 
 
 
 
 
 
 
 
 
$
7,614,392
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


* Interest rate includes amortization of debt issuance costs and debt premiums or discounts.  The interest rates at March 31, 2012 represent a weighted average of multiple issuances.
Senior Unsecured Debt
Additional information regarding our Senior Unsecured Debt is as follows:

March 31, 2012
December 31, 2011
Principal
Interest
Principal
Interest
($ in thousands)
Outstanding
Rate
Outstanding
Rate
Senior Notes:
  Due 1/15/2013
$
580,724
6.250%
$
580,724
6.250%
  Due 5/1/2014
600,000
8.250%
600,000
8.250%
  Due 3/15/2015
300,000
6.625%
300,000
6.625%
  Due 4/15/2015
500,000
7.875%
500,000
7.875%
  Due 10/14/2016*
560,625
3.125% (Variable)
575,000
3.175% (Variable)
  Due 4/15/2017
1,100,000
8.250%
1,100,000
8.250%
  Due 10/1/2018
600,000
8.125%
600,000
8.125%
  Due 3/15/2019
434,000
7.125%
434,000
7.125%
  Due 4/15/2020
1,100,000
8.500%
1,100,000
8.500%
  Due 4/15/2022
500,000
8.750%
500,000
8.750%
  Due 1/15/2027
345,858
7.875%
345,858
7.875%
  Due 2/15/2028
200,000
6.730%
200,000
6.730%
  Due 10/15/2029
50,000
8.400%
50,000
8.400%
  Due 8/15/2031
945,325
9.000%
945,325
9.000%
7,816,532
7,830,907
Debentures:
  Due 11/1/2025
138,000
7.000%
138,000
7.000%
  Due 8/15/2026
1,739
6.800%
1,739
6.800%
  Due 10/1/2034
628
7.680%
628
7.680%
  Due 7/1/2035
125,000
7.450%
125,000
7.450%
  Due 10/1/2046
193,500
7.050%
193,500
7.050%
458,867
458,867
Subsidiary Senior
   Notes due 12/1/2012
36,000
8.050%
36,000
8.050%
Total
$
8,311,399
7.92%
$
8,325,774
7.93%
Debt maturities by year
Our principal payments for the next five years are as follows as of March 31, 2012:

 
Principal
 
($ in thousands)
 
Payments
 
    
 
 
 
2012 (remaining nine months)
 
$
79,514
 
2013
 
$
638,767
 
2014
 
$
658,017
 
2015
 
$
858,049
 
2016
 
$
345,466
 
2017
 
$
1,100,501