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STOCK-BASED COMPENSATION - Performance Restricted Stock Units and Phantom Stock Awards (Details) - Phantom Share Units (PSUs) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Stock-based compensation
Accrued compensation cost liability	$ 4	$ 5
Unrecognized compensation cost	$ 1	$ 2
Equivalent common shares (in shares)	85	96

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