Quarterly report pursuant to Section 13 or 15(d)

Business Segment Information - Consolidated Assets (Details)

v2.4.0.8
Business Segment Information - Consolidated Assets (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets $ 2,126,653 $ 2,209,974 $ 2,166,162
Operating Segments [Member]
      
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets 1,948,784   1,872,589
ALM activities, including securities portfolio [Member]
      
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets 662,206   677,585
Equity investments [Member]
      
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets 2,625   5,626
Liquidating businesses [Member]
      
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets 70,991   124,053
Elimination of segment excess asset allocations to match liabilities [Member]
      
Segment Reporting, Asset Reconciling Item [Line Items]      
Total assets $ (557,953)   $ (513,691)