Acquisitions: (Swedish Match AB) (Details) - USD ($) $ in Millions		9 Months Ended	11 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022	Nov. 11, 2022
Net assets acquired based on fair values:
Goodwill	$ 16,509	$ 16,509	$ 16,509	$ 19,655
Measurement Period Adjustments
Goodwill		(2,386)
Swedish Match AB
Net assets acquired based on fair values:
Cash and cash equivalents	484	484	484		$ 484
Trade receivables	135	135	135		135
Other receivables	53	53	53		53
Inventories	437	437	437		444
Other current assets	415	415	415		524
Property, plant and equipment	677	677	677		627
Other intangible assets	7,801	7,801	7,801		4,512
Other non-current assets	218	218	218		214
Current portion of long-term debt	224	224	224		224
Accounts payable	120	120	120		120
Other current liabilities	532	532	532		531
Income taxes	14	14	14		14
Long-term debt	1,121	1,121	1,121		1,126
Deferred income taxes	2,089	2,089	2,089		1,253
Other non-current liabilities	196	196	196		187
Identifiable net assets acquired	5,924	5,924	5,924		3,538
Noncontrolling interest	2,379	2,379	2,379		2,379
Goodwill	10,915	10,915	10,915		13,301
Total consideration transferred	14,460	$ 14,460	14,460		$ 14,460
Measurement Period Adjustments
Cash and cash equivalents			0
Trade receivables			0
Other receivables			0
Inventories			(7)
Other current assets			(109)
Property, plant and equipment			50
Other intangible assets			3,289
Other non-current assets			4
Current portion of long-term debt			0
Accounts payable			0
Other current liabilities			1
Income taxes			0
Long-term debt			(5)
Deferred income taxes			836
Other non-current liabilities			9
Identifiable net assets acquired			2,386
Noncontrolling interest			0
Goodwill			(2,386)
Total consideration transferred			$ 0
Swedish Match AB | Trademarks
Measurement Period Adjustments
Trademark acquired	3,133
Swedish Match AB | Trademarks
Measurement Period Adjustments
Finite-lived intangible assets	$ 1,067
Swedish Match AB | Trademarks | Minimum
Measurement Period Adjustments
Acquired intangible assets, estimated useful life	20 years
Swedish Match AB | Trademarks | Maximum
Measurement Period Adjustments
Acquired intangible assets, estimated useful life	30 years
Swedish Match AB | Developed technology, including patents
Measurement Period Adjustments
Acquired intangible assets, estimated useful life	10 years
Finite-lived intangible assets	$ 113
Swedish Match AB | Customer relationships
Measurement Period Adjustments
Finite-lived intangible assets	$ 3,488
Swedish Match AB | Customer relationships | Minimum
Measurement Period Adjustments
Acquired intangible assets, estimated useful life	6 years
Swedish Match AB | Customer relationships | Maximum
Measurement Period Adjustments
Acquired intangible assets, estimated useful life	15 years