Amounts in Paragraphs - Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jan. 30, 2021
Summary of Significant Accounting Policies (Amounts in paragraphs)
Research and development expenses	$ 1,200	$ 1,200	$ 1,100
Research and Development as a Percent of Sales	3.00%	3.30%	3.20%
Inventory for Long-term Contracts or Programs, General and Administrative Costs Included in Inventory	$ 65	$ 59
Cash surrender value of life insurance	$ 399	367
Stock plans, vesting period	3 years
Disposal Group, Including Discontinued Operation, Consideration					$ 3,400
Pre-tax gain on sale of business			$ 2,000
Revenue from Sale of Equipment to a Customer				$ 444
Proceeds from sale of equipment to a customer	$ 0	155	84
Capital Expenditures Incurred but Not yet Paid	$ 75	$ 113	$ 91