Property and Equipment - Components (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 324,288	$ 283,730
Total accumulated depreciation and amortization	120,111	97,015
Total property and equipment, net	204,177	186,715	$ 160,281
Land and buildings
Property, Plant and Equipment [Line Items]
Gross property and equipment	105,293	91,650
Equipment
Property, Plant and Equipment [Line Items]
Gross property and equipment	185,039	157,458
Other assets
Property, Plant and Equipment [Line Items]
Gross property and equipment	5,116	4,602
Construction in progress
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 28,840	$ 30,020