SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Supplemental Cash Flow Elements [Abstract]
Interest paid, net of amounts capitalized	$ 2	$ 23	$ 47	$ 42
Income taxes paid	6	29	45	55
Interest income	1	1	6	15
Supplemental disclosure of non-cash investing and financing activities
Contributions to the Carbon TerraVault JV	11	15	26	20
Issuance of shares for stock-based compensation awards	2	0	23	88
Dividend equivalents for stock-based compensation awards	1	2	2	2
Excise tax on share repurchases	$ 0	$ 0	$ 2	$ 1