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FAIR VALUE - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Corporate bonds $ 31,790 $ 33,750
Interest rate & other derivative — non-qualifying hedges 534 660
Interest rate & other derivative — non-qualifying hedges 494 625
Fair Value, Recurring    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Corporate bonds 31,790 33,750
Interest rate & other derivative — non-qualifying hedges 534 660
Interest rate & other derivative — non-qualifying hedges 494 625
Fair Value, Recurring | Corporate Bonds    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Corporate bonds 140 467
Fair Value, Recurring | Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Corporate bonds 23 168
Interest rate & other derivative — non-qualifying hedges 29 17
Interest rate & other derivative — non-qualifying hedges 0 1
Fair Value, Recurring | Level 3 | Corporate Bonds    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Corporate bonds 23 168
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 29 17
Interest rate & other derivative — non-qualifying hedges $ 0 $ 1