Long-Term Investments (Schedule Of Net Investment In Leveraged Leases) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Long-term Investments [Abstract]
Lease Receivables (net of Non-Recourse Debt)	$ 1,150	$ 1,216
Estimated Residual Value of Leased Assets	519	525
Subtotal	631	691
Unearned and Deferred Income	(366)	(380)
Gross Investment in Leases	784	836
Deferred Tax Liabilities	(724)	(738)
Net Investments in Leases	$ 60	$ 98