Common Equity - Common Stock Public Offering and Forward Equity Sale Agreements - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
Nov. 20, 2025	Mar. 31, 2026
Forward equity sale agreements [Member]
Number of shares issued	4,613,372
Price per share	$ 41.71
Conversion of shares		401,000
Conversion price		$ 18.3
Incremental shares		401,000
OGE Energy [Member]
Conversion of shares		4,613,372
Conversion price		$ 192.4
IPO [Member] \| OGE Energy [Member]
Number of shares issued	9,226,744

The value of the financial instrument issued [noncash or part noncash] in the conversion of stock. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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