Long-Term Investments (Schedule Of Net Investment In Leveraged Leases) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Investments [Line Items]
Provision for Loan and Lease Losses		$ 9	$ 26
Assets Held for Sale	$ 20	2,060
Maximum U.S. Corporate Income Tax Rate	21.00%
Lease Receivables (net of Non-Recourse Debt)	$ 249	274
Estimated Residual Value of Leased Assets	0	0
Total Investment in Rental Receivables	249	274
Unearned and Deferred Income	(74)	(87)
Gross Investment in Leases	175	187
Deferred Tax Liabilities	(39)	(42)
Net Investments in Leases	$ 136	$ 145