Finance Receivables And Loans, Net (Consumer Concentration Risk by State and Foreign Geographic Region) (Details)	Dec. 31, 2014	Dec. 31, 2013
Texas and California [Member]
Concentration Risk [Line Items]
Consumer Concentration Risk	21.80%
Consumer Loans Auto Financing Receivable [Member]
Concentration Risk [Line Items]
Consumer Concentration Risk	100.00%	100.00%
Consumer Loans Auto Financing Receivable [Member] | TEXAS
Concentration Risk [Line Items]
Consumer Concentration Risk	13.60%	13.20%
Consumer Loans Auto Financing Receivable [Member] | CALIFORNIA
Concentration Risk [Line Items]
Consumer Concentration Risk	6.20%	5.80%
Consumer Loans Auto Financing Receivable [Member] | FLORIDA
Concentration Risk [Line Items]
Consumer Concentration Risk	7.30%	7.00%
Consumer Loans Auto Financing Receivable [Member] | PENNSYLVANIA
Concentration Risk [Line Items]
Consumer Concentration Risk	5.30%	5.30%
Consumer Loans Auto Financing Receivable [Member] | ILLINOIS
Concentration Risk [Line Items]
Consumer Concentration Risk	4.40%	4.40%
Consumer Loans Auto Financing Receivable [Member] | GEORGIA
Concentration Risk [Line Items]
Consumer Concentration Risk	4.20%	4.00%
Consumer Loans Auto Financing Receivable [Member] | MICHIGAN
Concentration Risk [Line Items]
Consumer Concentration Risk	3.80%	4.40%
Consumer Loans Auto Financing Receivable [Member] | NEW YORK
Concentration Risk [Line Items]
Consumer Concentration Risk	4.00%	4.30%
Consumer Loans Auto Financing Receivable [Member] | OHIO
Concentration Risk [Line Items]
Consumer Concentration Risk	3.90%	4.00%
Consumer Loans Auto Financing Receivable [Member] | NORTH CAROLINA
Concentration Risk [Line Items]
Consumer Concentration Risk	3.50%	3.40%
Consumer Loans Auto Financing Receivable [Member] | Other United States [Member]
Concentration Risk [Line Items]
Consumer Concentration Risk	43.80%	44.20%
Residential Mortgage [Member]
Concentration Risk [Line Items]
Consumer Concentration Risk	100.00%	100.00%
Residential Mortgage [Member] | TEXAS
Concentration Risk [Line Items]
Consumer Concentration Risk	6.00%	5.80%
Residential Mortgage [Member] | CALIFORNIA
Concentration Risk [Line Items]
Consumer Concentration Risk	30.80%	29.50%
Residential Mortgage [Member] | FLORIDA
Concentration Risk [Line Items]
Consumer Concentration Risk	3.70%	3.60%
Residential Mortgage [Member] | PENNSYLVANIA
Concentration Risk [Line Items]
Consumer Concentration Risk	1.60%	1.70%
Residential Mortgage [Member] | ILLINOIS
Concentration Risk [Line Items]
Consumer Concentration Risk	4.20%	4.40%
Residential Mortgage [Member] | GEORGIA
Concentration Risk [Line Items]
Consumer Concentration Risk	2.10%	2.10%
Residential Mortgage [Member] | MICHIGAN
Concentration Risk [Line Items]
Consumer Concentration Risk	3.10%	3.90%
Residential Mortgage [Member] | NEW YORK
Concentration Risk [Line Items]
Consumer Concentration Risk	1.90%	1.90%
Residential Mortgage [Member] | OHIO
Concentration Risk [Line Items]
Consumer Concentration Risk	0.60%	0.70%
Residential Mortgage [Member] | NORTH CAROLINA
Concentration Risk [Line Items]
Consumer Concentration Risk	1.90%	1.90%
Residential Mortgage [Member] | Other United States [Member]
Concentration Risk [Line Items]
Consumer Concentration Risk	44.10%	44.50%