Business and Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) businessSegment	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($) segment
Number of segments	3	3	3
Charges associated with doubtful accounts	$ 43	$ 20	$ 27
Net aggregate financing receivables	133	125
Prepaid expenses	771	700
Income taxes receivable	715	962
Payments for purchases of investments	172	523	925
Investments in partnership	$ 71	$ 283	662
U.S. government assistance, amount awarded			$ 568
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration]		Operating profit
Government Assistance, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, net	Property, plant and equipment, net
Operating Expenses
U.S. government assistance, amount recognized	$ 51	$ 49
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration]	Operating profit
Capital Expenditures
U.S. government assistance, amount	$ 136	$ 87
Minimum
U.S. government assistance, transaction duration			1 year
Maximum
U.S. government assistance, transaction duration			4 years