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Segment Information - Reconciliation of Segments Operating Income to Consolidated Income (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Operating income	$ 7,818	$ 7,220	$ 15,339	$ 14,804
Severance charges	0	(237)	0	(237)
Other components of net periodic benefit charges	(9)	(62)	(17)	(124)
Legacy legal matter	0	0	(106)	0
Equity in losses of unconsolidated businesses	(14)	(33)	(23)	(24)
Other income (expense), net	(72)	210	126	324
Interest expense	(1,698)	(1,285)	(3,333)	(2,492)
Income Before Provision For Income Taxes	6,034	6,112	12,109	12,612
Operating Segments
Segment Reporting Information [Line Items]
Operating income	8,104	7,863	15,875	15,513
Corporate and other
Segment Reporting Information [Line Items]
Operating income	$ (277)	$ (344)	$ (413)	$ (348)

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