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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Long-Term Debt and Leases - Summary of Debt (Details)	Sep. 30, 2021 USD ($)	Sep. 30, 2021 EUR (€)	Jun. 02, 2021 USD ($)	Jun. 02, 2021 EUR (€)	Apr. 30, 2021 USD ($)	Apr. 30, 2021 EUR (€)	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Other (discounts and debt issuance costs)	$ (130,000,000)
Total principal long-term debt	9,298,000,000
Current portion of long-term debt	39,000,000						$ 0
Total Long-term debt, net of current portion	9,259,000,000						$ 0
Senior Notes \| Organon Finance 1 LLC
Debt Instrument [Line Items]
Face amount of debt \| €						€ 1,250,000,000
Term Loan B Facility \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 2,993,000,000
Face amount of debt			$ 3,000,000,000
Term Loan B Facility \| Senior Notes \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Spread on variable rate	3.00%
Euro Denominated Term Loan B \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 874,000,000
Face amount of debt \| €		€ 750,000,000		€ 750,000,000
Euro Denominated Term Loan B \| Senior Notes \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Spread on variable rate	3.00%
4.125% Senior Secured Notes Due 2028 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 2,100,000,000
4.125% Senior Secured Notes Due 2028 \| Senior Notes \| Organon Finance 1 LLC
Debt Instrument [Line Items]
Stated interest rate	4.125%	4.125%			4.125%	4.125%
Face amount of debt					$ 2,100,000,000
2.875% Senior Secured Notes Due 2028 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,461,000,000
2.875% Senior Secured Notes Due 2028 \| Senior Notes \| Organon Finance 1 LLC
Debt Instrument [Line Items]
Stated interest rate	2.875%	2.875%			2.875%	2.875%
Face amount of debt \| €		€ 1,250,000,000
5.125% Senior Unsecured Notes Due 2031 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 2,000,000,000
5.125% Senior Unsecured Notes Due 2031 \| Senior Notes \| Organon Finance 1 LLC
Debt Instrument [Line Items]
Stated interest rate	5.125%	5.125%			5.125%	5.125%
Face amount of debt					$ 2,000,000,000