FAIR VALUES OF FINANCIAL INSTRUMENTS - Schedule of Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Assets disclosed at fair value
Investment securities	$ 201	$ 221
Total assets measured at fair value	201	221
Level 1
Assets disclosed at fair value
Investment securities	49	50
Total assets measured at fair value	49	50
Level 2
Assets disclosed at fair value
Investment securities	152	171
Total assets measured at fair value	152	171
Level 3
Assets disclosed at fair value
Investment securities	0	0
Total assets measured at fair value	$ 0	$ 0

- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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