Segment and Revenue Information - Schedule of Unallocated Items and Eliminations (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Share-based plans	$ (426)	$ (407)	$ (690)
Deferred compensation	(182)	(114)	(188)
Research and development expense, net	(3,615)	(3,812)	(3,377)
Other
Segment Reporting Information [Line Items]
Share-based plans	(49)	171	62
Deferred compensation	(182)	(114)	(188)
Amortization of previously capitalized interest	(92)	(93)	(95)
Research and development expense, net	(411)	(377)	(315)
Eliminations and other unallocated items	(2,297)	(1,634)	(1,223)
Unallocated items, eliminations and other	$ (3,031)	$ (2,047)	$ (1,759)

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Net earnings not attributable to reportable business segments excluding activity related to amortization of previously capitalized interest, deferred compensation, share-based plans and pension and postretirement. Intercompany eliminations are also included

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The net result for the period of deducting operating expenses from operating revenues, excluding adjustments for unallocated pension and postretirement expenses.

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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of noncash expense for share-based payment arrangement.

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