Discontinued Operations (Schedule Of Condensed Balance Sheet Financial Freedom Discontinued Operations) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets of discontinued operations	$ 501.3	$ 13,220.7	$ 13,059.6
Liabilities of discontinued operations	509.3	3,737.7
Discontinued Operation
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total cash and deposits, all of which is restricted	7.7	764.8
Net Loans	438.6	1,421.7
Other assets	36.6	1,229.8
Assets of discontinued operations	501.3	13,220.7
Secured borrowings	268.2	1,571.0
Other liabilities	241.1	2,166.7
Liabilities of discontinued operations	509.3	3,737.7
Discontinued Operation | Financial Freedom
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total cash and deposits, all of which is restricted	7.7	5.8
Net Loans	272.8	374.0
Other assets	36.6	68.3
Assets of discontinued operations	317.1	448.1
Secured borrowings	268.2	366.4
Other liabilities	232.3	569.4
Liabilities of discontinued operations	500.5	935.8
Net finance receivables of securitized balances	267.2	365.5
Net finance receivables awaiting securitization	5.6	8.5
Loans serviced for others	14,100.0	15,600.0
Contingent Liabilities | Discontinued Operation | Financial Freedom
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other liabilities	0.0	0.0
Reversed Mortgage Servicing Liabilities | Discontinued Operation | Financial Freedom
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other liabilities	0.0	0.0
Other Accrued Liabilities | Discontinued Operation | Financial Freedom
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other liabilities	$ 0.0	$ 0.0