Indebtedness: (Narrative) (Details) € in Billions					12 Months Ended
	Nov. 21, 2024 USD ($)	Nov. 21, 2024 EUR (€)	Nov. 07, 2022 EUR (€)	Jun. 23, 2022 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2025 EUR (€)	Dec. 11, 2025 USD ($)	Dec. 04, 2025 USD ($)	Jun. 23, 2022 EUR (€)	Jan. 28, 2022 USD ($)
Debt Instrument [Line Items]
Committed credit facilities, maximum borrowing capacity					$ 6,300,000,000
Repayments under credit facilities related to acquisition					0	$ 3,168,000,000	$ 4,430,000,000
Term loan					48,667,000,000	45,558,000,000
Borrowings from line of credit					0
Borrowings from committed credit facilities and other bank loans					168,000,000	137,000,000
Commercial paper
Debt Instrument [Line Items]
Commercial paper, maximum issuance capacity					8,000,000,000.0
Borrowings from committed credit facilities and other bank loans					0	0
Bank loans
Debt Instrument [Line Items]
Borrowings from committed credit facilities and other bank loans					168,000,000	137,000,000
Short-Term Credit Arrangement
Debt Instrument [Line Items]
Committed credit facilities, maximum borrowing capacity					$ 3,900,000,000	$ 2,100,000,000
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					$ 2,900,000,000			€ 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
4.875% US Dollar Notes Due February 2026 Issued In February 2023 | US Dollar Notes
Debt Instrument [Line Items]
Interest rate										4.875%
Debt outstanding										$ 1,700,000,000
Senior Unsecured Revolving Credit Facility, Expiring January 29, 2031 | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Committed credit facilities, maximum borrowing capacity									$ 2,000,000,000.0
Multi-year Revolving Credit Facility, Expiring February 10, 2026 | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Committed credit facilities, maximum borrowing capacity					$ 2,000,000,000.0							$ 2,000,000,000.0