Property, Plant and Equipment, net (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 18,149	$ 16,978
Less: accumulated depreciation and amortization	(10,936)	(10,387)
Total property, plant and equipment, net	7,213	6,591
Land
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	142	136
Buildings
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	7,425	7,013
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	8,661	8,128
Construction in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 1,921	$ 1,701