Goodwill and Other Intangible Assets, net: (Movement in Goodwill) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Beginning balance			$ 16,600	$ 16,779
Changes due to:
Acquisitions and divestitures				447
Currency			712	(626)
Impairment	$ (41)	$ 0	(41)	0	$ (665)
Measurement period adjustments			(7)
Ending balance			17,264	16,600	16,779
Goodwill, accumulated impairment losses			556	556
Europe
Goodwill [Roll Forward]
Beginning balance			4,130	4,563
Changes due to:
Acquisitions and divestitures				(65)
Currency			690	(368)
Impairment			(41)		(665)
Measurement period adjustments			0
Ending balance			4,779	4,130	4,563
SSEA, CIS & MEA
Goodwill [Roll Forward]
Beginning balance			3,251	2,877
Changes due to:
Acquisitions and divestitures				512
Currency			(43)	(138)
Impairment			0		0
Measurement period adjustments			(7)
Ending balance			3,201	3,251	2,877
EA, AU & PMI GTR
Goodwill [Roll Forward]
Beginning balance			470	492
Changes due to:
Acquisitions and divestitures				0
Currency			(9)	(22)
Impairment			0		0
Measurement period adjustments			0
Ending balance			461	470	492
Americas
Goodwill [Roll Forward]
Beginning balance			8,749	8,847
Changes due to:
Acquisitions and divestitures				0
Currency			74	(98)
Impairment			0		0
Measurement period adjustments			0
Ending balance			$ 8,823	$ 8,749	$ 8,847