Litigation and Other Contingencies (Schedule Of Guarantees) (Details) $ in Millions	Mar. 31, 2025 USD ($)
Litigation and other contingencies [Line Items]
Guarantees	$ 7,966
Equity Company Obligations
Litigation and other contingencies [Line Items]
Guarantees	1,726
Other Third-Party Obligations
Litigation and other contingencies [Line Items]
Guarantees	6,240
Debt-related
Litigation and other contingencies [Line Items]
Guarantees	1,216
Debt-related | Equity Company Obligations
Litigation and other contingencies [Line Items]
Guarantees	1,051
Debt-related | Other Third-Party Obligations
Litigation and other contingencies [Line Items]
Guarantees	165
Other
Litigation and other contingencies [Line Items]
Guarantees	6,750
Other | Equity Company Obligations
Litigation and other contingencies [Line Items]
Guarantees	675
Other | Other Third-Party Obligations
Litigation and other contingencies [Line Items]
Guarantees	$ 6,075