Indebtedness: (Short-Term Borrowings) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Short-term Debt [Line Items]
Amount Outstanding	$ 1,968	$ 5,637
Commercial paper
Short-term Debt [Line Items]
Amount Outstanding	$ 1,685	$ 912
Average Year-End Rate	5.60%	4.40%
Bank loans
Short-term Debt [Line Items]
Amount Outstanding	$ 283	$ 295
Average Year-End Rate	8.90%	7.50%
U.S. dollar credit facility borrowings related to Swedish Match AB acquisition
Short-term Debt [Line Items]
Amount Outstanding	$ 0	$ 4,430
Average Year-End Rate	0.00%	4.90%