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FAIR VALUE MEASUREMENTS - Schedule of Amortized Cost Basis, Unrealized Gains and Losses and Fair Values of Investments in Available-for-sale Securities (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Short-term cash investments	$ 9	$ 6
Debt securities
Debt Securities, Available-for-sale [Line Items]
Cost Basis	296	299
Unrealized Gains	1	0
Unrealized Losses	(14)	(23)
Fair Value	$ 283	$ 276

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