Loans - Residential RealEstate - PCI Loans, Delinquency (Details 8a) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Value	$ 62,611	$ 65,546
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	5,711	5,711
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	69,657	74,492
Percentage Of Loans Thirty Plus Days Past Due To Total Retained Loans	21.38%	23.30%
Purchased Credit Impaired [Member] | Current and less than 30 days past due and still accruing [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	54,764	57,137
Purchased Credit Impaired [Member] | 30 - 149 Days Past Due [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	3,452	4,291
Purchased Credit Impaired [Member] | Days Past Due 150 Or More [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	11,441	13,064
PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Value	21,565	22,693
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	1,494	1,494
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	24,296	26,139
Percentage Of Loans Thirty Plus Days Past Due To Total Retained Loans	28.96%	31.45%
PCI Option ARMs [Member] | Current and less than 30 days past due and still accruing [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	17,260	17,919
PCI Option ARMs [Member] | 30 - 149 Days Past Due [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,207	1,467
PCI Option ARMs [Member] | Days Past Due 150 Or More [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	5,829	6,753
PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Financing Receivables, Senior Liens, Percentage	20.00%
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Value	21,867	22,697
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	1,908	1,908
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	23,658	25,064
Percentage Of Loans Thirty Plus Days Past Due To Total Retained Loans	9.05%	9.50%
PCI Home Equity [Member] | Current and less than 30 days past due and still accruing [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	21,518	22,682
PCI Home Equity [Member] | 30 - 149 Days Past Due [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	858	1,130
PCI Home Equity [Member] | Days Past Due 150 Or More [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,282	1,252
PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Value	14,395	15,180
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	1,929	1,929
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	14,934	16,060
Percentage Of Loans Thirty Plus Days Past Due To Total Retained Loans	22.19%	24.36%
PCI Prime Mortgage [Member] | Current and less than 30 days past due and still accruing [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	11,620	12,148
PCI Prime Mortgage [Member] | 30 - 149 Days Past Due [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	758	912
PCI Prime Mortgage [Member] | Days Past Due 150 Or More [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,556	3,000
PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Value	4,784	4,976
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	380	380
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	6,769	7,229
Percentage Of Loans Thirty Plus Days Past Due To Total Retained Loans	35.50%	39.30%
PCI Subprime Mortgage [Member] | Current and less than 30 days past due and still accruing [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	4,366	4,388
PCI Subprime Mortgage [Member] | 30 - 149 Days Past Due [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	629	782
PCI Subprime Mortgage [Member] | Days Past Due 150 Or More [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,774	2,059
Current Estimated Ltv Between 101% And 125% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	12,340	13,114
Current Estimated Ltv Between 101% And 125% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	3,665	3,959
Current Estimated Ltv Between 101% And 125% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	5,106	5,393
Current Estimated Ltv Between 101% And 125% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	3,127	3,328
Current Estimated Ltv Between 101% And 125% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	442	434
Current Estimated Ltv Between 101% And 125% [Member] | Refreshed FICO Scores Less than 660 [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	9,188	10,012
Current Estimated Ltv Between 101% And 125% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	3,575	3,884
Current Estimated Ltv Between 101% And 125% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,112	2,304
Current Estimated Ltv Between 101% And 125% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,136	2,314
Current Estimated Ltv Between 101% And 125% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,365	1,510
Current Estimated LTV Between 80% To 100% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	8,616	9,223
Current Estimated LTV Between 80% To 100% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	3,490	3,740
Current Estimated LTV Between 80% To 100% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	3,271	3,482
Current Estimated LTV Between 80% To 100% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,507	1,629
Current Estimated LTV Between 80% To 100% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	348	372
Current Estimated LTV Between 80% To 100% [Member] | Refreshed FICO Scores Less than 660 [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	6,641	6,953
Current Estimated LTV Between 80% To 100% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,972	3,035
Current Estimated LTV Between 80% To 100% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,208	1,264
Current Estimated LTV Between 80% To 100% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,331	1,457
Current Estimated LTV Between 80% To 100% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,130	1,197
Current Estimated LTV Less Than 80% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	5,842	6,072
Current Estimated LTV Less Than 80% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,167	2,189
Current Estimated LTV Less Than 80% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,292	2,409
Current Estimated LTV Less Than 80% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,184	1,276
Current Estimated LTV Less Than 80% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	199	198
Current Estimated LTV Less Than 80% [Member] | Refreshed FICO Scores Less than 660 [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	5,619	5,743
Current Estimated LTV Less Than 80% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,212	2,215
Current Estimated LTV Less Than 80% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	961	998
Current Estimated LTV Less Than 80% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,380	1,424
Current Estimated LTV Less Than 80% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,066	1,106
Current Estimated LTV Greater Than 125% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	10,346	11,210
Current Estimated LTV Greater Than 125% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,190	2,509
Current Estimated LTV Greater Than 125% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	5,616	5,915
Current Estimated LTV Greater Than 125% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,094	2,313
Current Estimated LTV Greater Than 125% [Member] | Refreshed FICO Scores Equal to or greater than 660 [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	446	473
Current Estimated LTV Greater Than 125% [Member] | Refreshed FICO Scores Less than 660 [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	11,065	12,165
Current Estimated LTV Greater Than 125% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	4,025	4,608
Current Estimated LTV Greater Than 125% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	3,092	3,299
Current Estimated LTV Greater Than 125% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,175	2,319
Current Estimated LTV Greater Than 125% [Member] | Refreshed FICO Scores Less than 660 [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,773	1,939
California [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	37,040	39,438
California [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	12,715	13,565
California [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	14,282	15,091
California [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	8,477	9,121
California [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,566	1,661
New York [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	4,247	4,454
New York [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,483	1,548
New York [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,120	1,179
New York [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	969	1,018
New York [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	675	709
Florida [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	6,836	7,585
Florida [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,812	3,201
Florida [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,164	2,307
Florida [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,136	1,265
Florida [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	724	812
Illinois [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,019	2,182
Illinois [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	642	702
Illinois [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	529	558
Illinois [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	475	511
Illinois [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	373	411
Texas [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,088	1,168
Texas [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	125	140
Texas [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	417	455
Texas [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	158	168
Texas [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	388	405
New Jersey [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,052	2,182
New Jersey [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	907	969
New Jersey [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	444	471
New Jersey [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	424	445
New Jersey [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	277	297
Arizona [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,117	1,210
Arizona [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	327	362
Arizona [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	439	468
Arizona [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	237	254
Arizona [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	114	126
Washington [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,405	2,565
Washington [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	604	649
Washington [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	1,293	1,368
Washington [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	356	388
Washington [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	152	160
Ohio [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	310	336
Ohio [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	100	111
Ohio [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	29	32
Ohio [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	76	79
Ohio [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	105	114
Michigan [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	729	775
Michigan [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	252	268
Michigan [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	75	81
Michigan [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	226	239
Michigan [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	176	187
All Other States [Member] | Purchased Credit Impaired [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	11,814	12,597
All Other States [Member] | PCI Option ARMs [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	4,329	4,624
All Other States [Member] | PCI Home Equity [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,866	3,054
All Other States [Member] | PCI Prime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	2,400	2,572
All Other States [Member] | PCI Subprime Mortgage [Member]
Residential Real Estate PCI Loans by Delinquency [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance	$ 2,219	$ 2,347