INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Effective income tax rate, continuing operations (in percent)	9.00%	6.00%	16.00%	45.00%
Unrecognized tax benefits, Income tax penalties and Interest expense	$ 55		$ 55
Effective tax rate includes net discrete tax benefit	$ 20		20
Discrete tax benefit			$ 24
Restructuring, merger, acquisition and divestiture expense				$ 94
Tax benefit recognized on restructuring expense				9
DTA, impairment losses		$ 26		26
Tax benefits related to other one-time adjustments				$ 10
Restructuring, merger, acquisition, divestiture expenses, and asset impairment costs		75
Tax benefits recognized		$ 5

Restructuring Merger Acquisition And Divestiture Expense

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Restructuring Merger Acquisition Divestiture Expenses And Asset Impairment Costs

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from estimated impairment losses.

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-Publisher FASB
-Name Accounting Standards Codification
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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible restructuring charges.

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Amount of other income tax expense (benefit).

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Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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