v3.26.1
FAIR VALUE - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Corporate bonds $ 33,314 $ 31,790
Interest rate & other derivative — non-qualifying hedges 498 534
Fair Value, Recurring    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Corporate bonds 33,314 31,790
Interest rate & other derivative — non-qualifying hedges 498 534
Fair Value, Recurring | Corporate Bonds    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Corporate bonds 128 140
Fair Value, Recurring | Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Corporate bonds 20 23
Interest rate & other derivative — non-qualifying hedges 31 29
Fair Value, Recurring | Level 3 | Corporate Bonds    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Corporate bonds 20 23
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 $ 31 $ 29