FAIR VALUE - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Corporate bonds	$ 33,750	$ 19,936
Interest rate & other derivative — non-qualifying hedges	660	640
Interest rate & other derivative — non-qualifying hedges	625	636
Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Corporate bonds	33,750	19,936
Interest rate & other derivative — non-qualifying hedges	660	640
Interest rate & other derivative — non-qualifying hedges	625	636
Fair Value, Recurring | Corporate Bonds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Corporate bonds	467	482
Fair Value, Recurring | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Corporate bonds	168	157
Interest rate & other derivative — non-qualifying hedges	17	7
Interest rate & other derivative — non-qualifying hedges	1	1
Fair Value, Recurring | Level 3 | Corporate Bonds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Corporate bonds	168	157
Fair Value, Recurring | Level 3 | Interest Rate and Other Derivative
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate & other derivative — non-qualifying hedges	17	7
Interest rate & other derivative — non-qualifying hedges	$ 1	$ 1