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Credit Facilities and Short-Term Debt (Tables) | 6 Months Ended
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Jun. 30, 2026
Short-Term Debt [Abstract] |
Schedule of Line of Credit Facilities | The following table presents information regarding the Registrants' revolving credit agreements at June 30, 2026.
Entity |  | Aggregate Commitment |  |  | Amount Outstanding (A) |  |  | Weighted-Average Interest Rate (F) |  |  | Expiration
|  | (In millions) |  |  |  |  |  |
OGE Energy (B) |  | $ | 650.0 |  |  | $ | 129.1 |  |  |  | 4.04 | % |  | June 12, 2031
OGE Energy (C) |  |  | 60.0 |  |  |  | — |  |  |  | — | % |  | May 24, 2027
OG&E (D)(E) |  |  | 650.0 |  |  |  | 0.4 |  |  |  | 1.20 | % |  | June 12, 2031
Total |  | $ | 1,360.0 |  |  | $ | 129.5 |  |  |  | 4.03 | % |  |
(A) Includes direct borrowings under the revolving credit agreements, commercial paper borrowings and letters of credit at June 30, 2026. Typically, OGE Energy issues commercial paper to address consolidated operational activity, and OG&E will borrow from OGE Energy under the intercompany borrowing agreement as discussed below in footnote (E). (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. (C) OGE Energy has a $120.0 million floating rate unsecured three-year credit agreement, of which $60.0 million is considered a revolving loan, which is included in the table above, and $60.0 million is considered a term loan. The credit agreement, under certain circumstances, may be increased to a maximum commitment limit of $155.0 million and includes a maximum leverage ratio of 0.70 to 1.0. The other covenants under this credit agreement are substantially the same as OGE Energy's existing $650.0 million revolving credit agreement. OGE Energy previously drew $60.0 million on the term loan, and as of June 30, 2026, the $60.0 million due May 24, 2027 is presented as Long-term Debt due within One Year in the 2026 consolidated balance sheet. (D) 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. (E) On June 12, 2026, OG&E increased its intercompany borrowing agreement with OGE Energy whereby OG&E has access to up to $650.0 million of OGE Energy's revolving credit amount. This agreement has a termination date of June 12, 2031. At June 30, 2026, there were no borrowings under this agreement. (F) Represents the weighted-average interest rate for the outstanding borrowings under the revolving credit agreements, commercial paper borrowings and letters of credit.

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- Definition Tabular disclosure of short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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