Property and Equipment - Components (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 394,055	$ 324,288
Total accumulated depreciation and amortization	141,390	120,111
Total property and equipment, net	252,665	204,177	$ 186,715
Land and buildings
Property, Plant and Equipment [Line Items]
Gross property and equipment	123,039	105,293
Equipment
Property, Plant and Equipment [Line Items]
Gross property and equipment	218,893	185,039
Other assets
Property, Plant and Equipment [Line Items]
Gross property and equipment	5,487	5,116
Construction in progress
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 46,636	$ 28,840