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INCOME TAXES - Narrative (Details) € in Millions |  | 3 Months Ended |
--- | --- | --- | ---
Nov. 08, 2022 EUR (€) | Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($)
Income Tax Examination [Line Items] |  |  |  |
Income tax expense (benefit) from income taxes |  | $ 8,000,000 | $ 73,000,000 |
Income tax expense (benefit) on ordinary income (loss) |  | 28,000,000 | (13,000,000) |
Income tax expense (benefit) for discrete items |  | (20,000,000) | 86,000,000 |
Income tax expense (benefit) related to changes in uncertain tax positions |  | (22,000,000) | 18,000,000 |
Income tax expense (benefit) from final and potential settlement of various tax audits |  |  | 41,000,000 |
Income tax expense, establishment of stock valuation allowance on B+L's Canadian parent |  |  | 18,000,000 |
Income tax expense associated with stock compensation |  |  | $ 6,000,000 |
Valuation allowance against deferred tax assets |  | 2,294,000,000 |  | $ 2,254,000,000
Unrecognized tax benefits including interest and penalties |  | 880,000,000 |  | 918,000,000
Unrecognized tax benefits related to interest and penalties |  | 45,000,000 |  | $ 51,000,000
Portion of unrecognized tax benefits, if recognized, would reduce the Company's effective tax rate |  | 408,000,000 |  |
Unrecognized tax benefit, amount possible to decrease in next twelve months |  | 30,000,000 |  |
Maximum |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Estimate of possible loss, income tax examination |  | $ 2,100,000,000 |  |
Luxembourg Inland Revenue | Tax Years 2018 and 2019 |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Estimate of possible loss, income tax examination | € | € 272 |  |  |

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