SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Disclosure Text Block Supplement [Abstract]
Temporary investments	$ 889		$ 1,100
Accumulated depreciation	17,800		17,600
Depreciation expense	250	$ 258
Accounts Payable, Other	68		106
Insurance Recoveries	18	2
Interest payments	56	$ 111
Asset retirement obligation	107		107
Current investments	$ 291		$ 245

Amount of obligations incurred and payable classified as other.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates, classified as other. Excludes cash and cash equivalents within disposal group and discontinued operation.

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