Loans (Period-End Balances And Various Asset Quality Attributes By Origination Vintage For The Real Estate Installment Loans) (Details) (Real Estate Installment Class [Member], USD $) In Millions, unless otherwise specified	Sep. 30, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans - Period End Balance	$ 2,141
Avg orig CLTV	80.00%
Avg orig FICO	732
% Broker	9.20%
% TN	49.80%
% 1st Lien	56.40%
Avg Refreshed FICO	726
Pre-2003 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans - Period End Balance	62
Avg orig CLTV	77.60%
Avg orig FICO	691
% Broker	17.90%
% TN	62.10%
% 1st Lien	66.80%
Avg Refreshed FICO	688
2004 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans - Period End Balance	105
Avg orig CLTV	73.90%
Avg orig FICO	712
% Broker	7.60%
% TN	50.50%
% 1st Lien	71.70%
Avg Refreshed FICO	710
2005 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans - Period End Balance	288
Avg orig CLTV	83.20%
Avg orig FICO	721
% Broker	26.40%
% TN	20.80%
% 1st Lien	27.80%
Avg Refreshed FICO	716
2006 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans - Period End Balance	314
Avg orig CLTV	79.00%
Avg orig FICO	721
% Broker	4.70%
% TN	24.00%
% 1st Lien	24.30%
Avg Refreshed FICO	707
2003 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans - Period End Balance	177
Avg orig CLTV	72.50%
Avg orig FICO	723
% Broker	3.20%
% TN	44.10%
% 1st Lien	77.60%
Avg Refreshed FICO	731
2007 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans - Period End Balance	441
Avg orig CLTV	82.20%
Avg orig FICO	730
% Broker	16.40%
% TN	23.90%
% 1st Lien	24.70%
Avg Refreshed FICO	715
2008 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans - Period End Balance	166
Avg orig CLTV	77.20%
Avg orig FICO	736
% Broker	6.00%
% TN	77.10%
% 1st Lien	78.30%
Avg Refreshed FICO	730
2009 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans - Period End Balance	109
Avg orig CLTV	71.50%
Avg orig FICO	751
% Broker	0.00%
% TN	89.90%
% 1st Lien	82.50%
Avg Refreshed FICO	754
2010 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans - Period End Balance	207
Avg orig CLTV	85.40%
Avg orig FICO	748
% Broker	0.00%
% TN	88.70%
% 1st Lien	97.40%
Avg Refreshed FICO	752
2011 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans - Period End Balance	$ 272
Avg orig CLTV	82.70%
Avg orig FICO	756
% Broker	0.00%
% TN	90.10%
% 1st Lien	98.00%
Avg Refreshed FICO	754