Income Taxes (Schedule Of Tax Effects Of Deferred Income Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Deferred Tax Assets:
Net operating loss (NOL) carry forwards	$ 877.3	$ 2,528.3
Basis difference in loans	181.5	281.4
Provision for credit losses	117.8	185.7
Accrued liabilities and reserves	116.6	274.9
FSA adjustments — aircraft and rail contracts	0.0	24.2
Deferred stock-based compensation	19.5	34.5
Domestic tax credits	87.1	40.5
Capital Loss Carryforward	54.0	3.3
Other	46.8	75.8
Total gross deferred tax assets	1,500.6	3,448.6
Deferred Tax Liabilities:
Operating leases	(1,066.5)	(1,818.5)
Loans and direct financing leases	(38.1)	(100.3)
Basis difference in mortgage backed securities	(24.6)	(100.0)
Basis difference in federal home loan bank stock	(17.5)	(28.1)
Non-U.S. unremitted earnings	(61.0)	(1,032.6)
Unrealized foreign exchange gains	(12.5)	(27.7)
Goodwill and intangibles	(23.5)	(116.7)
Other	(16.9)	(21.6)
Total deferred tax liabilities	(1,260.6)	(3,245.5)
Total net deferred tax asset before valuation allowances	240.0	203.1
Less: Valuation allowances	(280.6)	(278.4)
Net deferred tax asset (liability) after valuation allowances	$ (40.6)	$ (75.3)