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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Supplemental Cash Flow Information [Abstract] |  |  |
Current assets | $ (1) | $ (5) | $ (47)
Other assets | (14) | 15 | 43
Current liabilities | 5 | (82) | (38)
Long-term liabilities and equity | 15 | (17) | 87
Other items, net | 5 | (89) | 45
Interest Paid, Including Capitalized Interest, Operating and Investing Activities [Abstract] |  |  |
Interest, net of amounts capitalized | 191 | 235 | 239
Income Taxes Paid, Net [Abstract] |  |  |
Income taxes | 179 | 217 | 202
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] |  |  |
Outstanding trade payables related to capital expenditures | $ 20 | $ 22 | $ 18

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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4297-108586 + Details
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