Summary of Significant Accounting Policies Property, Plant and Equipment (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment
Property, plant and equipment, at cost	$ 14,713	$ 13,406
Accumulated depreciation	(6,819)	(6,335)
Property, plant, and equipment, net	7,894	7,071
Land and land improvements
Property, Plant and Equipment
Property, plant and equipment, at cost	636	628
Buildings and improvements
Property, Plant and Equipment
Property, plant and equipment, at cost	3,019	2,762
Machinery and other equipment
Property, Plant and Equipment
Property, plant and equipment, at cost	8,064	7,206
Capitalized software costs
Property, Plant and Equipment
Property, plant and equipment, at cost	481	602
Leasehold improvements
Property, Plant and Equipment
Property, plant and equipment, at cost	$ 2,513	$ 2,208
Minimum | Capitalized software costs
Property, Plant and Equipment
Property, plant and equipment, estimated useful life	3 years
Maximum [Member] | Land and land improvements
Property, Plant and Equipment
Property, plant and equipment, estimated useful life	40 years
Maximum [Member] | Buildings and improvements
Property, Plant and Equipment
Property, plant and equipment, estimated useful life	45 years
Maximum [Member] | Machinery and other equipment
Property, Plant and Equipment
Property, plant and equipment, estimated useful life	20 years
Maximum [Member] | Capitalized software costs
Property, Plant and Equipment
Property, plant and equipment, estimated useful life	5 years