INVESTMENTS - Balance Sheet Classification (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Total debt securities	$ 1,824	$ 1,676
Trading Securities
Debt Securities, Available-for-sale [Line Items]
Total debt securities	50	45
Available-for-Sale Securities
Debt Securities, Available-for-sale [Line Items]
Total debt securities	1,774	1,631
Marketable securities | Trading Securities
Debt Securities, Available-for-sale [Line Items]
Total debt securities	50	45
Marketable securities | Available-for-Sale Securities
Debt Securities, Available-for-sale [Line Items]
Total debt securities	1,395	1,260
Other noncurrent assets | Trading Securities
Debt Securities, Available-for-sale [Line Items]
Total debt securities	0	0
Other noncurrent assets | Available-for-Sale Securities
Debt Securities, Available-for-sale [Line Items]
Total debt securities	$ 379	$ 371