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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplemental Cash Flow Information [Abstract]
Current assets	$ (57)	$ (1)	$ (5)
Other assets	(32)	(14)	15
Current liabilities	109	5	(82)
Long-term liabilities and equity	69	15	(17)
Other items, net	89	5	(89)
Interest Paid, Including Capitalized Interest, Operating and Investing Activities [Abstract]
Interest, net of amounts capitalized	170	191	235
Income Taxes Paid, Net [Abstract]
Income taxes, net of refunds	122	179	217
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Outstanding trade payables related to capital expenditures	$ 22	$ 20	$ 22

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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