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INCOME TAXES (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Income Tax Contingency [Line Items] |  |  |  |  |
Effective tax rate, percent | 20.50% | 4.10% | 15.80% | 30.40% |
Federal statutory tax rate, percent |  |  | 21.00% | 21.00% |
Unrecognized tax benefits | $ 97 |  | $ 97 |  | $ 84
Unrecognized tax benefits, income tax penalties and interest accrued | $ 31 |  | $ 31 |  | $ 31
Tax and Customs Administration, Netherlands |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Federal statutory tax rate, percent |  |  | 25.00% |  |
Effective income tax rate at innovation box tax rate, percent |  |  | 9.00% | 7.00% |

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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- Definition Amount accrued 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319 + Details
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