Segment and Revenue Information - Schedule of Segment, Reconciliation of Other Items from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Share-based plans			$ 208	$ 381	$ 690	$ 725	$ 833
Deferred compensation					188	(117)	126
Research and development expense, net	$ 954	$ 797	1,822	1,538	3,377	2,852	2,249
Unallocated items, eliminations and other
Segment Reporting Information [Line Items]
Share-based plans	43	14	53	(38)	62	(114)	(174)
Deferred compensation	(19)	(42)	(49)	(96)	(188)	117	(126)
Amortization of previously capitalized interest	(23)	(24)	(46)	(47)	(95)	(95)	(107)
Research and development expense, net	(99)	(73)	(188)	(149)	(315)	(278)	(184)
Eliminations and other unallocated items	(536)	(211)	(716)	(466)	(1,223)	(1,134)	(636)
Unallocated items, eliminations and other	$ (634)	$ (336)	$ (946)	$ (796)	$ (1,759)	$ (1,504)	$ (1,227)

Amortization Of Previously Capitalized Interest

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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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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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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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