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Short-Term Debt and Credit Facilities
 9 Months Ended
Sep. 30, 2012
Short-term Debt [Abstract]  
Short-Term Debt and Credit Facilities
Short-Term Debt and Credit Facilities
 
The Company borrows on a short-term basis, as necessary, by the issuance of commercial paper and by borrowings under its revolving credit agreements.  The short-term debt balance was $455.6 million and $277.1 million at September 30, 2012 and December 31, 2011, respectively. The following table provides information regarding the Company's revolving credit agreements and available cash at September 30, 2012.
Revolving Credit Agreements and Available Cash 
 
Aggregate
Amount
Weighted-Average
 
 
Entity
Commitment 
Outstanding (A)
Interest Rate
 
Maturity
 
(In millions)
 
 
 
OGE Energy (B)
$
750.0

$
455.6

0.44
%
(E)
December 13, 2016
OG&E (C)
400.0

2.2

0.53
%
(E)
December 13, 2016
Enogex LLC (D)
400.0

—

—
%
(E)
December 13, 2016
 
1,550.0

457.8

0.44
%
 
 
Cash
10.2

N/A

N/A

 
N/A
Total
$
1,560.2

$
457.8

0.44
%
 
 
(A)
Includes direct borrowings under the revolving credit agreements, commercial paper borrowings and letters of credit at September 30, 2012.
(B)
This bank facility is available to back up OGE Energy's commercial paper borrowings and to provide revolving credit borrowings.  This bank facility can also be used as a letter of credit facility.  At September 30, 2012, there was $455.6 million in outstanding commercial paper borrowings.
(C)
This bank facility is available to back up OG&E's commercial paper borrowings and to provide revolving credit borrowings.  This bank facility can also be used as a letter of credit facility.  At September 30, 2012, there was $2.2 million in letters of credit.
(D)
This bank facility is available to provide revolving credit borrowings for Enogex LLC.  As Enogex LLC's credit agreement matures on December 13, 2016, along with its intent in utilizing its credit agreement, borrowings thereunder are classified as long-term debt in the Company's Condensed Consolidated Balance Sheets.
(E)
Represents the weighted-average interest rate for the outstanding borrowings under the revolving credit agreements, commercial paper borrowings and letters of credit.

The Company's ability to access the commercial paper market could be adversely impacted by a credit ratings downgrade or major market disruptions.  Pricing grids associated with the Company's credit facilities could cause annual fees and borrowing rates to increase if an adverse ratings impact occurs. The impact of any future downgrade could include an increase in the costs of the Company's short-term borrowings, but a reduction in the Company's credit ratings would not result in any defaults or accelerations.  Any future downgrade of the Company could also lead to higher long-term borrowing costs and, if below investment grade, would require the Company to post cash collateral or letters of credit.
 
OG&E must obtain regulatory approval from the FERC in order to borrow on a short-term basis.  OG&E has the necessary regulatory approvals to incur up to $800 million in short-term borrowings at any one time for a two-year period beginning January 1, 2011 and ending December 31, 2012.