Business and Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions		12 Months Ended
	Jan. 01, 2020 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) businessSegment	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)
Number of segments				4	4	4
Charges associated with doubtful accounts			$ 29			$ 31	$ 31
Net aggregate financing receivables		$ 254	254	$ 254	$ 254	247
Prepaid expenses		802	802	802	802	770
Income taxes receivable		$ 962	962	$ 962	$ 962	812
Payments for purchases of investments			523			934	342
Investments in partnership			283			662	$ 172
U.S. government assistance, amount awarded						$ 568
U.S. government assistance, amount recognized			$ 137
Government Assistance Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag		137 million
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	Property, plant and equipment, net	Property, plant and equipment, net
Operating Expenses
U.S. government assistance, amount recognized			$ 50
Capital Expenditures
U.S. government assistance, amount		$ 87	$ 87	$ 87	$ 87
Minimum
U.S. government assistance, transaction duration		1 year
Maximum
U.S. government assistance, transaction duration		4 years
Cumulative effect, period of adoption, adjustment | ASU 2016-13
Allowance for doubtful accounts, increase	$ 10