Litigation And Other Contingencies (Schedule Of Guarantees) (Details) $ in Millions	Dec. 31, 2023 USD ($)
Loss Contingencies [Line Items]
Guarantees	$ 7,807
Equity Company Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	1,862
Other Third-Party Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	5,945
Debt-Related Guarantees [Member]
Loss Contingencies [Line Items]
Guarantees	1,300
Debt-Related Guarantees [Member] | Equity Company Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	1,151
Debt-Related Guarantees [Member] | Other Third-Party Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	149
Other Guarantees [Member]
Loss Contingencies [Line Items]
Guarantees	6,507
Other Guarantees [Member] | Equity Company Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	711
Other Guarantees [Member] | Other Third-Party Obligations [Member]
Loss Contingencies [Line Items]
Guarantees	$ 5,796