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