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Indebtedness: (Narrative) (Details) € in Billions					12 Months Ended
Indebtedness: (Narrative) (Details) € in Billions	Nov. 21, 2024 USD ($)	Nov. 21, 2024 EUR (€)	Nov. 07, 2022 EUR (€)	Jun. 23, 2022 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jan. 29, 2025 USD ($)	Jan. 29, 2025 EUR (€)	Dec. 31, 2024 EUR (€)	Jun. 23, 2022 EUR (€)
Debt Instrument [Line Items]
Committed credit facilities, maximum borrowing capacity					$ 6,200,000,000
Borrowings under credit facilities related to acquisition					0	$ 0	$ 13,920,000,000
Repayments under credit facilities related to acquisition					3,168,000,000	4,430,000,000	$ 4,000,000,000
Term loan					45,558,000,000	45,941,000,000
Borrowings from line of credit					0
Borrowings from committed credit facilities and other bank loans					137,000,000	1,968,000,000
Bank loans
Debt Instrument [Line Items]
Borrowings from committed credit facilities and other bank loans					137,000,000	283,000,000
Short-Term Credit Arrangement
Debt Instrument [Line Items]
Committed credit facilities, maximum borrowing capacity					$ 2,100,000,000	$ 2,700,000,000
Senior Unsecured Term Loan
Debt Instrument [Line Items]
Committed credit facilities, maximum borrowing capacity				$ 5,800,000,000							€ 5.5
Senior Unsecured Term Loan \| Swedish Match AB
Debt Instrument [Line Items]
Debt term					5 years
Borrowings under credit facilities related to acquisition \| €			€ 5.5
Term loan					$ 2,600,000,000					€ 2.5
Senior Unsecured Term Loan \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Committed credit facilities, maximum borrowing capacity				$ 3,200,000,000							3.0
Debt term				3 years
Repayments under credit facilities related to acquisition	$ 3,200,000,000	€ 3.0
Senior Unsecured Term Loan \| Debt Instrument, Redemption, Period One \| Swedish Match AB
Debt Instrument [Line Items]
Borrowings under credit facilities related to acquisition \| €			3.0
Senior Unsecured Term Loan \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Committed credit facilities, maximum borrowing capacity				$ 2,600,000,000							€ 2.5
Senior Unsecured Term Loan \| Debt Instrument, Redemption, Period Two \| Swedish Match AB
Debt Instrument [Line Items]
Borrowings under credit facilities related to acquisition \| €			€ 2.5
Senior Unsecured Bridge Facility \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt term	3 years	3 years
Credit Agreement \| Line of Credit \| Revolving Credit Facility \| Subsequent Event
Debt Instrument [Line Items]
Committed credit facilities, maximum borrowing capacity								$ 1,600,000,000	€ 1.5