Income And Other Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Unrecognized Tax Benefits [Roll Forward]
Balance at January 1	$ 4,035	$ 3,935	$ 3,398
Additions based on current year's tax positions	206	376	350
Additions for prior years' tax positions	454	103	400
Reductions for prior years' tax positions	(377)	(293)	(38)
Reductions due to lapse of the statute of limitations	(4)	(17)	(25)
Settlements with tax authorities	(150)	(13)	(153)
Foreign exchange effects/other	(33)	(56)	3
Balance at December 31	$ 4,131	$ 4,035	$ 3,935

Amount of unrecognized tax benefits.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 217
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-217

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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