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Goodwill - Goodwill Activity (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Goodwill [Roll Forward]
Beginning of year balance	$ 25,949	$ 15,524
Acquisitions	9,343	10,428
Other	(9)	(3)
End of year balance	$ 35,283	$ 25,949

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- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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