Quarterly report pursuant to Section 13 or 15(d)

Business Segment Information - Consolidated Assets (Details)

v2.4.0.6
Business Segment Information - Consolidated Assets (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets $ 2,166,162 $ 2,129,046 $ 2,219,628
Operating Segments [Member]
     
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets 1,902,195   1,883,663
ALM activities, including securities portfolio [Member]
     
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets 634,209   653,131
Equity investments [Member]
     
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets 5,521   14,737
Liquidating businesses [Member]
     
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets 27,166   38,136
Elimination of segment excess asset allocations to match liabilities [Member]
     
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets (538,980)   (489,548)
Other [Member]
     
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets $ 136,051   $ 119,509