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INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Contingency [Line Items]
Income (loss) before income taxes	$ (152)	$ 2,264
Income tax benefit (expense)	$ 164	$ (542)
Effective tax rate	107.90%	23.90%
In-process research and development impairment	$ 2,700	$ 0
Fair Value, Nonrecurring | In Process Research And Development Trodelvy For HR+/HER2-
Income Tax Contingency [Line Items]
In-process research and development impairment	$ 2,700

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