Loans (Period-End Balances And Various Asset Quality Attributes By Origination Vintage For The HELOC) (Details) (HELOC [Member], USD $) In Millions, unless otherwise specified	Jun. 30, 2011
HELOC - Period End Balance	$ 3,885	[1]
Avg orig CLTV	77.00%
Avg orig FICO	740
% Broker	14.90%
% TN	34.70%
% 1st Lien	20.60%
Avg Refreshed FICO	730
Restricted loan balance	649.2
Pre-2003 [Member]
HELOC - Period End Balance	206	[1]
Avg orig CLTV	75.40%
Avg orig FICO	723
% Broker	14.60%
% TN	41.40%
% 1st Lien	22.80%
Avg Refreshed FICO	720
2003 [Member]
HELOC - Period End Balance	298	[1]
Avg orig CLTV	76.10%
Avg orig FICO	733
% Broker	24.00%
% TN	25.80%
% 1st Lien	16.00%
Avg Refreshed FICO	726
2004 [Member]
HELOC - Period End Balance	637	[1]
Avg orig CLTV	79.60%
Avg orig FICO	728
% Broker	32.00%
% TN	17.40%
% 1st Lien	19.10%
Avg Refreshed FICO	720
2005 [Member]
HELOC - Period End Balance	789	[1]
Avg orig CLTV	79.50%
Avg orig FICO	734
% Broker	16.10%
% TN	16.70%
% 1st Lien	12.10%
Avg Refreshed FICO	721
2006 [Member]
HELOC - Period End Balance	593	[1]
Avg orig CLTV	76.60%
Avg orig FICO	742
% Broker	6.90%
% TN	23.60%
% 1st Lien	13.80%
Avg Refreshed FICO	726
2007 [Member]
HELOC - Period End Balance	599	[1]
Avg orig CLTV	77.50%
Avg orig FICO	746
% Broker	13.40%
% TN	29.30%
% 1st Lien	14.80%
Avg Refreshed FICO	732
2008 [Member]
HELOC - Period End Balance	307	[1]
Avg orig CLTV	74.00%
Avg orig FICO	755
% Broker	8.70%
% TN	69.70%
% 1st Lien	36.50%
Avg Refreshed FICO	749
2009 [Member]
HELOC - Period End Balance	192	[1]
Avg orig CLTV	71.60%
Avg orig FICO	755
% Broker	0.00%
% TN	86.30%
% 1st Lien	44.90%
Avg Refreshed FICO	755
2010 [Member]
HELOC - Period End Balance	192	[1]
Avg orig CLTV	73.20%
Avg orig FICO	756
% Broker	0.00%
% TN	94.90%
% 1st Lien	45.80%
Avg Refreshed FICO	758
2011 [Member]
HELOC - Period End Balance	$ 72	[1]
Avg orig CLTV	72.70%
Avg orig FICO	756
% Broker	0.00%
% TN	94.40%
% 1st Lien	46.90%
Avg Refreshed FICO	758

[1] Includes $649.2 million of restricted loan balances.