Summary of Significant Accounting Policies Property, Plant and Equipment (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment
Property, plant and equipment, at cost	$ 17,617	$ 16,058
Accumulated depreciation	(7,964)	(7,258)
Property, plant, and equipment, net	9,653	8,800
Gain (Loss) on Disposition of Assets		96
Land and land improvements
Property, Plant and Equipment
Property, plant and equipment, at cost	742	741
Buildings and improvements
Property, Plant and Equipment
Property, plant and equipment, at cost	3,605	3,272
Machinery and other equipment
Property, Plant and Equipment
Property, plant and equipment, at cost	9,641	8,774
Capitalized software costs
Property, Plant and Equipment
Property, plant and equipment, at cost	553	524
Noncash or Part Noncash Acquisition, Fixed Assets Acquired		46
Leasehold improvements
Property, Plant and Equipment
Property, plant and equipment, at cost	3,076	2,747
Noncash or Part Noncash Acquisition, Fixed Assets Acquired	$ 55	96
Land
Property, Plant and Equipment
Noncash or Part Noncash Acquisition, Fixed Assets Acquired		$ 155
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