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RISK-MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES - Narrative (Details) - USD ($) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2025 | Aug. 31, 2025 | Jun. 30, 2025 | Dec. 31, 2024
Senior Notes |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Debt, face amount | $ 3,000,000,000 | $ 3,000,000,000 |  |
Treasury Lock, Entered In Q3 2025 | Cash Flow Hedging | Derivatives designated as hedging instruments |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivative outstanding | 300,000,000 |  |  |
Treasury Lock, Entered In Q2 2025 | Cash Flow Hedging | Derivatives designated as hedging instruments |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivative outstanding |  |  | $ 700,000,000 |
Treasury Lock | Cash Flow Hedging | Derivatives designated as hedging instruments |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivative, notional amount settled | 1,000,000,000 |  |  |
Interest-rate contracts (Billions of dollars) | Cash Flow Hedging | Derivatives designated as hedging instruments |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivative outstanding | $ 0 |  |  | $ 0

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