v2.4.0.6
Commitments, Guarantees and Contingencies (Commitments by Period of Expiration) (Details) (USD $)
Jun. 30, 2012
Commitments $ 139,139,000,000
Maximum commitment under reverse repurchase facility 3,000,000,000
Letters of Credit and Other Financial Guarantees Obtained to Satisfy Collateral Requirements [Member]
  
Commitments 811,000,000
Investments
  
Commitments 1,631,000,000
Primary Lending Commitments - Investment Grade
  
Commitments 58,425,000,000 [1],[2]
Unfunded commitments accounted for as held for investment 24,100,000,000
Unfunded commitments accounted for as held for sale 4,700,000,000
Primary Lending Commitments - Non-investment Grade
  
Commitments 15,440,000,000 [2]
Unfunded commitments accounted for as held for investment 4,300,000,000
Unfunded commitments accounted for as held for sale 2,100,000,000
Secondary Lending Commitments
  
Commitments 307,000,000 [3]
Commitments for Secured Lending Transactions
  
Commitments 932,000,000
Forward Starting Reverse Repurchase Agreements
  
Commitments 57,864,000,000 [4],[5]
Commercial and Residential Mortgage-Related Commitments
  
Commitments 2,228,000,000
Other Commitments
  
Commitments 1,501,000,000
Less than 1 Year
  
Commitments 76,740,000,000
Less than 1 Year | Letters of Credit and Other Financial Guarantees Obtained to Satisfy Collateral Requirements [Member]
  
Commitments 797,000,000
Less than 1 Year | Investments
  
Commitments 1,132,000,000
Less than 1 Year | Primary Lending Commitments - Investment Grade
  
Commitments 11,352,000,000 [1],[2]
Less than 1 Year | Primary Lending Commitments - Non-investment Grade
  
Commitments 1,801,000,000 [2]
Less than 1 Year | Secondary Lending Commitments
  
Commitments 71,000,000 [3]
Less than 1 Year | Commitments for Secured Lending Transactions
  
Commitments 891,000,000
Less than 1 Year | Forward Starting Reverse Repurchase Agreements
  
Commitments 57,864,000,000 [4],[5]
Less than 1 Year | Commercial and Residential Mortgage-Related Commitments
  
Commitments 1,583,000,000
Less than 1 Year | Other Commitments
  
Commitments 1,249,000,000
1 - 3 Years
  
Commitments 15,289,000,000
1 - 3 Years | Letters of Credit and Other Financial Guarantees Obtained to Satisfy Collateral Requirements [Member]
  
Commitments 8,000,000
1 - 3 Years | Investments
  
Commitments 174,000,000
1 - 3 Years | Primary Lending Commitments - Investment Grade
  
Commitments 12,303,000,000 [1],[2]
1 - 3 Years | Primary Lending Commitments - Non-investment Grade
  
Commitments 2,450,000,000 [2]
1 - 3 Years | Secondary Lending Commitments
  
Commitments 135,000,000 [3]
1 - 3 Years | Commitments for Secured Lending Transactions
  
Commitments 41,000,000
1 - 3 Years | Forward Starting Reverse Repurchase Agreements
  
Commitments 0 [4],[5]
1 - 3 Years | Commercial and Residential Mortgage-Related Commitments
  
Commitments 34,000,000
1 - 3 Years | Other Commitments
  
Commitments 144,000,000
3 - 5 Years
  
Commitments 43,634,000,000
3 - 5 Years | Letters of Credit and Other Financial Guarantees Obtained to Satisfy Collateral Requirements [Member]
  
Commitments 6,000,000
3 - 5 Years | Investments
  
Commitments 44,000,000
3 - 5 Years | Primary Lending Commitments - Investment Grade
  
Commitments 33,824,000,000 [1],[2]
3 - 5 Years | Primary Lending Commitments - Non-investment Grade
  
Commitments 9,434,000,000 [2]
3 - 5 Years | Secondary Lending Commitments
  
Commitments 28,000,000 [3]
3 - 5 Years | Commitments for Secured Lending Transactions
  
Commitments 0
3 - 5 Years | Forward Starting Reverse Repurchase Agreements
  
Commitments 0 [4],[5]
3 - 5 Years | Commercial and Residential Mortgage-Related Commitments
  
Commitments 253,000,000
3 - 5 Years | Other Commitments
  
Commitments 45,000,000
Over 5 Years
  
Commitments 3,476,000,000
Over 5 Years | Letters of Credit and Other Financial Guarantees Obtained to Satisfy Collateral Requirements [Member]
  
Commitments 0
Over 5 Years | Investments
  
Commitments 281,000,000
Over 5 Years | Primary Lending Commitments - Investment Grade
  
Commitments 946,000,000 [1],[2]
Over 5 Years | Primary Lending Commitments - Non-investment Grade
  
Commitments 1,755,000,000 [2]
Over 5 Years | Secondary Lending Commitments
  
Commitments 73,000,000 [3]
Over 5 Years | Commitments for Secured Lending Transactions
  
Commitments 0
Over 5 Years | Forward Starting Reverse Repurchase Agreements
  
Commitments 0 [4],[5]
Over 5 Years | Commercial and Residential Mortgage-Related Commitments
  
Commitments 358,000,000
Over 5 Years | Other Commitments
  
Commitments 63,000,000
Asset-backed Securities | Commercial Paper | Primary Lending Commitments - Investment Grade
  
Commitments 275,000,000
Asset-backed Securities | Commercial Paper | Less than 1 Year | Primary Lending Commitments - Investment Grade
  
Commitments 138,000,000
Asset-backed Securities | Commercial Paper | 1 - 3 Years | Primary Lending Commitments - Investment Grade
  
Commitments 137,000,000
U.S. Agency Securities | Settled within Three Days
  
Commitments $ 52,700,000,000
[1] This amount includes commitments to asset-backed commercial paper conduits of $275 million at June 30, 2012, of which $138 million have maturities of less than one year and $137 million of which have maturities of one to three years.
[2] This amount includes $24.1 billion of investment grade and $4.3 billion of non-investment grade unfunded commitments accounted for as held for investment and $4.7 billion of investment grade and $2.1 billion of non-investment grade unfunded commitments accounted for as held for sale at June 30, 2012. The remainder of these lending commitments are carried at fair value.
[3] These commitments are recorded at fair value within Financial instruments owned and Financial instruments sold, not yet purchased in the condensed consolidated statements of financial condition (see Note 3).
[4] The Company enters into forward starting reverse repurchase and securities borrowing agreements (agreements that have a trade date at or prior to June 30, 2012 and settle subsequent to period-end) that are primarily secured by collateral from U.S. government agency securities and other sovereign government obligations. These agreements primarily settle within three business days and of the amount at June 30, 2012, $52.7 billion settled within three business days.
[5] The Company also has a contingent obligation to provide financing to a clearinghouse through which it clears certain transactions. The financing is required only upon the default of a clearinghouse member. The financing takes the form of a reverse repurchase facility, with a maximum amount of approximately $3 billion.