Segment and Geographic Area Information - Reconciliation of Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Total Assets	$ 81,414	$ 73,214
Deferred tax assets, valuation allowance	1,664	8,690
Operating Segments
Segment Reporting Information [Line Items]
Total Assets	24,641	24,184	$ 22,337
Reconciling Items
Segment Reporting Information [Line Items]
Cash and investments	8,853	8,078
Goodwill and intangible assets	29,755	32,494
All other	18,165	8,458
Deferred tax assets, valuation allowance	7,500
Reconciling Items | Defined Benefit Plans
Segment Reporting Information [Line Items]
All other	$ 5,700	$ 4,200