Taxes on Income - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Examination [Line Items]
Tax cuts and jobs act, transition tax for accumulated foreign earnings, liability			$ 0.0
Undistributed foreign earnings	$ 4.0
Effective income tax rate	(52.20%)	18.30%	11.70%
Valuation allowance	$ 309.0	$ 52.0	$ 35.0
Step-up in tax basis			75.0
Operating loss carryforwards	35.0	65.0
Operating loss carryforwards, valuation allowance	309.0	309.0
Change in valuation allowance, amount	208.0	4.0	(4.0)
Increase (decrease) in deferred tax asset valuation allowance		17.0
Income taxes paid	135.0	214.0	131.0
Intra-entity transfers of inventory	396.0	368.0
Unrecognized tax benefits	115.0	93.0	78.0	$ 219.0
Unrecognized tax benefits that would impact tax rate	115.0
Settlements	7.0	12.0	15.0
Spinoff related adjustments	0.0	0.0	$ 108.0
Decrease in unrecognized tax benefits is reasonably possible		27.0
Income tax penalties and interest expense	3.0
Accrued interest and penalties	40.0	35.0
Additions charged to expense	257.0	17.0
SWITZERLAND
Income Tax Examination [Line Items]
Swiss tax arrangement	476.0
Gross tax benefit	686.0
Valuation allowance	210.0
Tax Year 2015 to 2016
Income Tax Examination [Line Items]
Settlements		29.0
Foreign Tax Authority
Income Tax Examination [Line Items]
Operating loss carryforwards, valuation allowance	250.0	250.0
Increase (decrease) in deferred tax asset valuation allowance	210.0
Income taxes paid	7.0	12.0
Settlements	15.0	11.0
Spinoff related adjustments		79.3
Domestic Tax Authority
Income Tax Examination [Line Items]
Operating loss carryforwards, valuation allowance	59.0	59.0
Increase (decrease) in deferred tax asset valuation allowance	$ 46.0
Merck and Co., Inc.
Income Tax Examination [Line Items]
Income taxes paid		$ 18.0