Debt Instrument, Convertible, Conversion Premium

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- Definition

Debt Instrument Convertible, Conversion Price, Premium

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- Definition

Debt Instrument, Convertible, Redemption Period, Threshold Trading Days Prior To Maturity Date

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- Definition

Debt Instrument, Convertible, Threshold Percentage Of Stock Trading Price

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Debt Instrument, Convertible, Threshold Trading Days, Measurement Period

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- Definition

Debt Instrument, Covenant, Interest Coverage Ratio, Minimum

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- Definition

Debt Instrument, Covenant, Threshold Rate

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- Definition

Debt Instrument, Subjective Acceleration Clause, Cross-Default, Amount

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- Definition

Debt and Equity Securities, Realized Gains

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- Definition

Fair Value of Financial Instruments.

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- Definition

Investments not required to be disclosed.

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- Definition

Line of Credit Facility, Covenant Terms, Debt to Capitalization Ratio

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- Definition

Maximum Aggregate Amount Of Securities Registered

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

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Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

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Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Amount of realized and unrealized gain (loss) on investment.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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FAIR VALUE MEASUREMENTS - Narrative (Details) $ / shares in Units, $ in Millions						1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 16, 2026 USD ($)	May 01, 2026 USD ($)	Apr. 28, 2026 USD ($)	Jun. 12, 2025 USD ($) tradingDay consecutiveTradingDay $ / shares	May 04, 2023 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	May 31, 2026 USD ($)	May 29, 2026 USD ($)	Mar. 19, 2026 USD ($)	Dec. 31, 2025 USD ($)	Sep. 04, 2025 USD ($)
Fair Value of Financial Instruments [Line Items]
Realized gains							$ 0	$ 0	$ 0	$ 0
Gain on Investments							10	$ 7	10	9
Investments not required to be disclosed							$ 336		336					$ 344
Repayments of debt									$ 694	$ 2,155
Shelf Registration Statement
Fair Value of Financial Instruments [Line Items]
Maximum aggregate amount of securities registered												$ 3,000
Term Loan Credit Agreement \| Line of Credit
Fair Value of Financial Instruments [Line Items]
Face amount of debt			$ 750
Minimum consolidated interest coverage ratio (not less than)			2.50
Term Loan Credit Agreement \| Line of Credit \| PE
Fair Value of Financial Instruments [Line Items]
Face amount of debt	$ 150
Consolidated debt to total capitalization ratio (percent)	0.65
Initial threshold rate	0.0070
Cross-default provision for other indebtedness	$ 100
Term Loan Credit Agreement \| Line of Credit \| PE \| Fed Funds Effective Rate Overnight Index Swap Rate
Fair Value of Financial Instruments [Line Items]
Debt instrument, basis spread on variable rate	0.50%
Term Loan Credit Agreement \| Line of Credit \| PE \| Secured Overnight Financing Rate (SOFR)
Fair Value of Financial Instruments [Line Items]
Debt instrument, basis spread on variable rate	1.00%
4.00%, Convertible Notes Maturity 2026 \| Senior Unsecured Convertible Notes
Fair Value of Financial Instruments [Line Items]
Face amount of debt					$ 1,500
Issuance interest rate					4.00%
Convertible Notes Maturity 2026 \| Senior Unsecured Convertible Notes
Fair Value of Financial Instruments [Line Items]
Proceeds from issuance of debt					$ 1,480
Convertible Notes 2026 \| Senior Unsecured Convertible Notes
Fair Value of Financial Instruments [Line Items]
Repayments of debt						$ 1,200
2026 Convertible Notes \| Senior Unsecured Convertible Notes
Fair Value of Financial Instruments [Line Items]
Repayments of debt		$ 325
Accrued and unpaid interest		6
Conversion premium		25
Long-term debt		$ 294
3.625%, Convertible Notes Maturity 2029 \| Senior Unsecured Convertible Notes
Fair Value of Financial Instruments [Line Items]
Face amount of debt				$ 1,350
3.875%, Convertible Notes Maturity 2031 \| Senior Unsecured Convertible Notes
Fair Value of Financial Instruments [Line Items]
Face amount of debt				$ 1,150
Convertible Notes Maturity 2029 \| Senior Unsecured Convertible Notes
Fair Value of Financial Instruments [Line Items]
Issuance interest rate				3.625%
Trading days prior to maturity date \| tradingDay				40
Convertible Notes Maturity 2031 \| Senior Unsecured Convertible Notes
Fair Value of Financial Instruments [Line Items]
Issuance interest rate				3.875%
Convertible Notes Maturity 2029 & 2031 \| Senior Unsecured Convertible Notes
Fair Value of Financial Instruments [Line Items]
Proceeds from issuance of debt				$ 2,470
Debt instrument, conversion price (in dollars per share) \| $ / shares				$ 47.78
Debt instrument convertible premium				20.00%
Redemption price, percentage				100.00%
Debt instrument, convertible, conversion ratio				0.0209275
Convertible Notes Maturity 2029 & 2031 \| Senior Unsecured Convertible Notes \| Debt Conversion Terms One
Fair Value of Financial Instruments [Line Items]
Debt instrument, convertible, threshold trading days \| tradingDay				20
Debt instrument, convertible, threshold consecutive trading days \| tradingDay				30
Debt instrument, convertible, threshold percentage of stock price trigger				130.00%
Convertible Notes Maturity 2029 & 2031 \| Senior Unsecured Convertible Notes \| Debt Conversion Terms Two
Fair Value of Financial Instruments [Line Items]
Debt instrument, convertible, threshold trading days \| consecutiveTradingDay				5
Debt instrument, convertible, threshold consecutive trading days \| consecutiveTradingDay				10
Threshold trading days measurement period \| tradingDay				10
Debt instrument, measurement period percentage				98.00%
Unsecured Senior Notes Due 2028 \| Unsecured Debt \| FE PA
Fair Value of Financial Instruments [Line Items]
Face amount of debt													$ 300
Issuance interest rate													4.15%
Unsecured Senior Notes Due 2031 \| Unsecured Debt \| JCP&L
Fair Value of Financial Instruments [Line Items]
Face amount of debt															$ 500
Unsecured Senior Notes Due 2031 \| Unsecured Debt \| FE PA
Fair Value of Financial Instruments [Line Items]
Face amount of debt													$ 550
Issuance interest rate													4.55%
Unsecured Senior Notes Due 2029 \| Unsecured Debt \| JCP&L
Fair Value of Financial Instruments [Line Items]
Face amount of debt															350
Unsecured Senior Notes Due 2036 \| Unsecured Debt \| JCP&L
Fair Value of Financial Instruments [Line Items]
Face amount of debt															$ 500
Unsecured Senior Notes Due 2030 \| Unsecured Debt \| JCP&L
Fair Value of Financial Instruments [Line Items]
Face amount of debt											$ 350
Issuance interest rate											4.60%