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INCOME TAXES Income Tax Disclosure (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Contingency [Line Items] |  |  |
Deferred tax assets | $ 109 | $ 99 |
Tax benefit, change in valuation allowance | 5 | 4 | $ 2
Deferred tax assets. net operating loss and tax credit carryforwards | 65 | 72 |
Deferred tax assets. net operating loss and tax credit carryforwards, subject to expiration | 35 | 44 |
Deferred tax assets. net operating loss and tax credit carryforwards, not subject to expiration | 30 | 28 |
Income taxes paid | 442 | 384 | 231
State and Local Jurisdiction |  |  |
Income Tax Contingency [Line Items] |  |  |
Tax benefit from reversal of an accrual for uncertain tax position | 9 | 8 | 8
Tax benefit. change in valuation allowance |  | 1 | $ 1
Other Noncurrent Assets |  |  |
Income Tax Contingency [Line Items] |  |  |
Deferred tax assets | 109 | 99 |
Other Noncurrent Liabilities |  |  |
Income Tax Contingency [Line Items] |  |  |
Deferred tax liabilities | $ 20 | $ 22 |

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