Acquisitions and Divestitures: (Purchase Price Allocation) (Details) - USD ($) $ in Millions	11 Months Ended	12 Months Ended
	May 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Net assets acquired based on fair values:
Goodwill		$ 17,264	$ 16,600		$ 16,779
Measurement Period Adjustments, Goodwill		$ (7)
UTC
Net assets acquired based on fair values:
Cash and cash equivalent	$ 74			$ 74
Current assets, including receivables and inventories	11			11
Other intangible assets - Tobacco manufacturing license	236			211
Measurement Period Adjustments, Other intangible assets - Tobacco manufacturing license	25
Other non-current assets, including property, plant and equipment	16			16
Current liabilities	(8)			(8)
Non-Current liabilities	(18)			0
Measurement Period Adjustments, Non-current liabilities	(18)
Identifiable net assets acquired	311			304
Measurement Period Adjustments, Identifiable net assets acquired	7
Noncontrolling interest	(160)			(159)
Measurement Period Adjustments, Noncontrolling interest	(1)
Goodwill	505			510
Measurement Period Adjustments, Goodwill	(5)
Acquisition fair value	656			$ 655
Measurement Period Adjustments, Acquisition fair value	$ 1