Quarterly report pursuant to Section 13 or 15(d)

Fair Value Disclosures (Details)

v2.4.0.6
Fair Value Disclosures (Details) (USD $)
Jun. 30, 2012
Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount $ 1,740,000,000  
Assets:    
Receivables under securities borrowed transactions 500,000,000 259,000,000
Derivative contracts 28,072,000,000 35,013,000,000
Available-for-sale, fair value 699,000,000 [1] 694,000,000
Total Investment securities 152,000,000 244,000,000
Liabilities:    
Payables under repurchase agreements 90,533,000,000 85,652,000,000
Long-term borrowings 30,803,000,000 30,325,000,000
Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount 350,000,000  
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount 785,000,000  
Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount 40,000,000  
Non-qualifying Investment Securities [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount 640,000,000  
Liabilities:    
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount 535,000,000  
Fair Value, Measurements, Recurring [Member] | Level 1
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 3,801,000,000 1,796,000,000
Receivables under resale agreements 0 0
Receivables under securities borrowed transactions 0 0
Trading assets, excluding derivative contracts 79,602,000,000 66,238,000,000
Derivative contracts 1,997,000,000 [2] 1,810,000,000 [2]
Available-for-sale, fair value 404,000,000 398,000,000
Investment securities non-qualifying 2,489,000,000 2,624,000,000
Total Investment securities 2,893,000,000 3,022,000,000
Securities received as collateral 15,972,000,000 13,058,000,000
Loans, Notes and Mortgages at Fair Value 0 0
Other assets 0 0
Liabilities:    
Payables under repurchase agreements 0 0
Short-term borrowings 0 0
Trading liabilities, excluding derivative contracts 55,028,000,000 42,931,000,000
Derivative contracts 1,727,000,000 [2] 1,419,000,000 [2]
Obligation to return securities received as collateral 15,972,000,000 13,058,000,000
Other payables - interest and other 0 0
Long-term borrowings 0 0
Fair Value, Measurements, Recurring [Member] | Level 2
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 2,061,000,000 2,792,000,000
Receivables under resale agreements 90,533,000,000 85,652,000,000
Receivables under securities borrowed transactions 500,000,000 259,000,000
Trading assets, excluding derivative contracts 65,349,000,000 61,171,000,000
Derivative contracts 675,105,000,000 [2] 722,108,000,000 [2]
Available-for-sale, fair value 287,000,000 249,000,000
Investment securities non-qualifying 780,000,000 328,000,000
Total Investment securities 1,067,000,000 577,000,000
Securities received as collateral 563,000,000 658,000,000
Loans, Notes and Mortgages at Fair Value 1,046,000,000 596,000,000
Other assets 0 0
Liabilities:    
Payables under repurchase agreements 48,663,000,000 34,235,000,000
Short-term borrowings 3,816,000,000 5,908,000,000
Trading liabilities, excluding derivative contracts 13,180,000,000 10,438,000,000
Derivative contracts 680,654,000,000 [2] 724,713,000,000 [2]
Obligation to return securities received as collateral 563,000,000 658,000,000
Other payables - interest and other 131,000,000 163,000,000
Long-term borrowings 29,334,000,000 28,139,000,000
Fair Value, Measurements, Recurring [Member] | Level 3
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 0 0
Receivables under resale agreements 0 0
Receivables under securities borrowed transactions 0 0
Trading assets, excluding derivative contracts 9,250,000,000 10,055,000,000
Derivative contracts 8,001,000,000 [2] 10,110,000,000 [2]
Available-for-sale, fair value 8,000,000 47,000,000
Investment securities non-qualifying 333,000,000 574,000,000
Total Investment securities 341,000,000 621,000,000
Securities received as collateral 0 0
Loans, Notes and Mortgages at Fair Value 1,776,000,000 1,726,000,000
Other assets 1,263,000,000 1,349,000,000
Liabilities:    
Payables under repurchase agreements 0 0
Short-term borrowings 0 0
Trading liabilities, excluding derivative contracts 62,000,000 113,000,000
Derivative contracts 4,587,000,000 [2] 5,615,000,000 [2]
Obligation to return securities received as collateral 0 0
Other payables - interest and other 2,000,000 10,000,000
Long-term borrowings 1,469,000,000 2,186,000,000
Fair Value, Measurements, Recurring [Member] | Level 3 | Equity-linked structured notes
   
Liabilities:    
Long-term borrowings   1,700,000,000
Fair Value, Measurements, Recurring [Member] | Level 3 | Asset-backed Securities, Collateralized Debt Obligations and Other Mortgage Products [Member]
   
Assets:    
Derivative contracts   2,400,000,000 [2]
Liabilities:    
Derivative contracts   1,600,000,000 [2]
Fair Value, Measurements, Recurring [Member] | Level 3 | Other credit derivatives
   
Assets:    
Derivative contracts   3,100,000,000 [2]
Liabilities:    
Derivative contracts   700,000,000
Fair Value, Measurements, Recurring [Member] | Level 3 | Equity, currency, interest rate and commodity derivatives
   
Assets:    
Derivative contracts   4,600,000,000
Liabilities:    
Derivative contracts   3,300,000,000
Fair Value, Measurements, Recurring [Member] | Netting
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 0 [3] 0 [3]
Receivables under resale agreements 0 [3] 0 [3]
Receivables under securities borrowed transactions 0 [3] 0 [3]
Trading assets, excluding derivative contracts 0 [3] 0 [3]
Derivative contracts (657,031,000,000) [2],[3] (699,015,000,000) [2],[3]
Available-for-sale, fair value 0 [3] 0 [3]
Investment securities non-qualifying 0 [3] 0 [3]
Total Investment securities 0 [3] 0 [3]
Securities received as collateral 0 [3] 0 [3]
Loans, Notes and Mortgages at Fair Value 0 [3] 0 [3]
Other assets 0 [3] 0 [3]
Liabilities:    
Payables under repurchase agreements 0 [3] 0 [3]
Short-term borrowings 0 [3] 0 [3]
Trading liabilities, excluding derivative contracts 0 [3] 0 [3]
Derivative contracts (662,709,000,000) [2],[3] (705,508,000,000) [2],[3]
Obligation to return securities received as collateral 0 [3] 0 [3]
Other payables - interest and other 0 [3] 0 [3]
Long-term borrowings 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 5,862,000,000 4,588,000,000
Receivables under resale agreements 90,533,000,000 85,652,000,000
Receivables under securities borrowed transactions 500,000,000 259,000,000
Trading assets, excluding derivative contracts 154,201,000,000 137,464,000,000
Derivative contracts 28,072,000,000 [2] 35,013,000,000 [2]
Available-for-sale, fair value 699,000,000 694,000,000
Investment securities non-qualifying 3,602,000,000 3,526,000,000
Total Investment securities 4,301,000,000 4,220,000,000
Securities received as collateral 16,535,000,000 13,716,000,000
Loans, Notes and Mortgages at Fair Value 2,822,000,000 2,322,000,000
Other assets 1,263,000,000 1,349,000,000
Liabilities:    
Payables under repurchase agreements 48,663,000,000 34,235,000,000
Short-term borrowings 3,816,000,000 5,908,000,000
Trading liabilities, excluding derivative contracts 68,270,000,000 53,482,000,000
Derivative contracts 24,259,000,000 [2] 26,239,000,000 [2]
Obligation to return securities received as collateral 16,535,000,000 13,716,000,000
Other payables - interest and other 133,000,000 173,000,000
Long-term borrowings 30,803,000,000 30,325,000,000
Fair Value, Measurements, Recurring [Member] | Equities | Level 1
   
Liabilities:    
Trading liabilities, excluding derivative contracts 20,285,000,000 10,868,000,000
Fair Value, Measurements, Recurring [Member] | Equities | Level 2
   
Liabilities:    
Trading liabilities, excluding derivative contracts 2,038,000,000 1,230,000,000
Fair Value, Measurements, Recurring [Member] | Equities | Level 3
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | Equities | Netting
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Equities | Estimate of Fair Value, Fair Value Disclosure
   
Liabilities:    
Trading liabilities, excluding derivative contracts 22,323,000,000 12,098,000,000
Fair Value, Measurements, Recurring [Member] | Convertible debentures | Level 1
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | Convertible debentures | Level 2
   
Liabilities:    
Trading liabilities, excluding derivative contracts 214,000,000 125,000,000
Fair Value, Measurements, Recurring [Member] | Convertible debentures | Level 3
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | Convertible debentures | Netting
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Convertible debentures | Estimate of Fair Value, Fair Value Disclosure
   
Liabilities:    
Trading liabilities, excluding derivative contracts 214,000,000 125,000,000
Fair Value, Measurements, Recurring [Member] | Non-U.S. governments and agencies | Level 1
   
Liabilities:    
Trading liabilities, excluding derivative contracts 17,012,000,000 15,911,000,000
Fair Value, Measurements, Recurring [Member] | Non-U.S. governments and agencies | Level 2
   
Liabilities:    
Trading liabilities, excluding derivative contracts 1,307,000,000 643,000,000
Fair Value, Measurements, Recurring [Member] | Non-U.S. governments and agencies | Level 3
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | Non-U.S. governments and agencies | Netting
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Non-U.S. governments and agencies | Estimate of Fair Value, Fair Value Disclosure
   
Liabilities:    
Trading liabilities, excluding derivative contracts 18,319,000,000 16,554,000,000
Fair Value, Measurements, Recurring [Member] | Corporate debt | Level 1
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | Corporate debt | Level 2
   
Liabilities:    
Trading liabilities, excluding derivative contracts 8,094,000,000 6,927,000,000
Fair Value, Measurements, Recurring [Member] | Corporate debt | Level 3
   
Liabilities:    
Trading liabilities, excluding derivative contracts 9,000,000 52,000,000
Fair Value, Measurements, Recurring [Member] | Corporate debt | Netting
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Corporate debt | Estimate of Fair Value, Fair Value Disclosure
   
Liabilities:    
Trading liabilities, excluding derivative contracts 8,103,000,000 6,979,000,000
Fair Value, Measurements, Recurring [Member] | Preferred stock | Level 1
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | Preferred stock | Level 2
   
Liabilities:    
Trading liabilities, excluding derivative contracts 120,000,000 89,000,000
Fair Value, Measurements, Recurring [Member] | Preferred stock | Level 3
   
Liabilities:    
Trading liabilities, excluding derivative contracts 9,000,000 16,000,000
Fair Value, Measurements, Recurring [Member] | Preferred stock | Netting
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Preferred stock | Estimate of Fair Value, Fair Value Disclosure
   
Liabilities:    
Trading liabilities, excluding derivative contracts 129,000,000 105,000,000
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Level 1
   
Liabilities:    
Trading liabilities, excluding derivative contracts 17,285,000,000 15,603,000,000
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Level 2
   
Liabilities:    
Trading liabilities, excluding derivative contracts 1,335,000,000 1,373,000,000
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Level 3
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Netting
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Estimate of Fair Value, Fair Value Disclosure
   
Liabilities:    
Trading liabilities, excluding derivative contracts 18,620,000,000 16,976,000,000
Fair Value, Measurements, Recurring [Member] | Municipals, money markets and other | Level 1
   
Liabilities:    
Trading liabilities, excluding derivative contracts 446,000,000 549,000,000
Fair Value, Measurements, Recurring [Member] | Municipals, money markets and other | Level 2
   
Liabilities:    
Trading liabilities, excluding derivative contracts 72,000,000 51,000,000
Fair Value, Measurements, Recurring [Member] | Municipals, money markets and other | Level 3
   
Liabilities:    
Trading liabilities, excluding derivative contracts 44,000,000 45,000,000
Fair Value, Measurements, Recurring [Member] | Municipals, money markets and other | Netting
   
Liabilities:    
Trading liabilities, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Municipals, money markets and other | Estimate of Fair Value, Fair Value Disclosure
   
Liabilities:    
Trading liabilities, excluding derivative contracts 562,000,000 645,000,000
Fair Value, Measurements, Recurring [Member] | Corporate debt | Level 1
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 0 0
Trading assets, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | Corporate debt | Level 2
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 88,000,000 295,000,000
Trading assets, excluding derivative contracts 11,686,000,000 13,027,000,000
Fair Value, Measurements, Recurring [Member] | Corporate debt | Level 3
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 0 0
Trading assets, excluding derivative contracts 2,106,000,000 3,962,000,000
Fair Value, Measurements, Recurring [Member] | Corporate debt | Netting
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 0 [3] 0 [3]
Trading assets, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Corporate debt | Estimate of Fair Value, Fair Value Disclosure
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 88,000,000 295,000,000
Trading assets, excluding derivative contracts 13,792,000,000 16,989,000,000
Fair Value, Measurements, Recurring [Member] | Non-U.S. governments and agencies | Level 1
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 143,000,000 0
Trading assets, excluding derivative contracts 32,731,000,000 28,026,000,000
Fair Value, Measurements, Recurring [Member] | Non-U.S. governments and agencies | Level 2
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 1,723,000,000 1,757,000,000
Trading assets, excluding derivative contracts 3,445,000,000 1,871,000,000
Fair Value, Measurements, Recurring [Member] | Non-U.S. governments and agencies | Level 3
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 0 0
Trading assets, excluding derivative contracts 389,000,000 342,000,000
Fair Value, Measurements, Recurring [Member] | Non-U.S. governments and agencies | Netting
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 0 [3] 0 [3]
Trading assets, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Non-U.S. governments and agencies | Estimate of Fair Value, Fair Value Disclosure
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 1,866,000,000 1,757,000,000
Trading assets, excluding derivative contracts 36,565,000,000 30,239,000,000
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Level 1
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 3,658,000,000 1,796,000,000
Trading assets, excluding derivative contracts 30,094,000,000 22,183,000,000
Available-for-sale, fair value 404,000,000 398,000,000
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Level 2
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 250,000,000 740,000,000
Trading assets, excluding derivative contracts 23,816,000,000 20,820,000,000
Available-for-sale, fair value 0 0
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Level 3
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 0 0
Trading assets, excluding derivative contracts 0 0
Available-for-sale, fair value 0 0
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Netting
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 0 [3] 0 [3]
Trading assets, excluding derivative contracts 0 [3] 0 [3]
Available-for-sale, fair value 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Estimate of Fair Value, Fair Value Disclosure
   
Assets:    
Securities segregated for regulatory purposes or deposited with clearing organizations 3,908,000,000 2,536,000,000
Trading assets, excluding derivative contracts 53,910,000,000 43,003,000,000
Available-for-sale, fair value 404,000,000 398,000,000
Fair Value, Measurements, Recurring [Member] | Equities | Level 1
   
Assets:    
Trading assets, excluding derivative contracts 15,700,000,000 14,962,000,000
Fair Value, Measurements, Recurring [Member] | Equities | Level 2
   
Assets:    
Trading assets, excluding derivative contracts 8,546,000,000 5,860,000,000
Fair Value, Measurements, Recurring [Member] | Equities | Level 3
   
Assets:    
Trading assets, excluding derivative contracts 185,000,000 179,000,000
Fair Value, Measurements, Recurring [Member] | Equities | Netting
   
Assets:    
Trading assets, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Equities | Estimate of Fair Value, Fair Value Disclosure
   
Assets:    
Trading assets, excluding derivative contracts 24,431,000,000 21,001,000,000
Fair Value, Measurements, Recurring [Member] | Convertible debentures | Level 1
   
Assets:    
Trading assets, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | Convertible debentures | Level 2
   
Assets:    
Trading assets, excluding derivative contracts 4,109,000,000 4,519,000,000
Fair Value, Measurements, Recurring [Member] | Convertible debentures | Level 3
   
Assets:    
Trading assets, excluding derivative contracts 34,000,000 99,000,000
Fair Value, Measurements, Recurring [Member] | Convertible debentures | Netting
   
Assets:    
Trading assets, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Convertible debentures | Estimate of Fair Value, Fair Value Disclosure
   
Assets:    
Trading assets, excluding derivative contracts 4,143,000,000 4,618,000,000
Fair Value, Measurements, Recurring [Member] | Preferred stock | Level 1
   
Assets:    
Trading assets, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | Preferred stock | Level 2
   
Assets:    
Trading assets, excluding derivative contracts 89,000,000 89,000,000
Fair Value, Measurements, Recurring [Member] | Preferred stock | Level 3
   
Assets:    
Trading assets, excluding derivative contracts 228,000,000 227,000,000
Fair Value, Measurements, Recurring [Member] | Preferred stock | Netting
   
Assets:    
Trading assets, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Preferred stock | Estimate of Fair Value, Fair Value Disclosure
   
Assets:    
Trading assets, excluding derivative contracts 317,000,000 316,000,000
Fair Value, Measurements, Recurring [Member] | Mortgages, mortgage-backed and asset-backed | Level 1
   
Assets:    
Trading assets, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | Mortgages, mortgage-backed and asset-backed | Level 2
   
Assets:    
Trading assets, excluding derivative contracts 4,917,000,000 5,055,000,000
Fair Value, Measurements, Recurring [Member] | Mortgages, mortgage-backed and asset-backed | Level 3
   
Assets:    
Trading assets, excluding derivative contracts 4,578,000,000 3,199,000,000
Fair Value, Measurements, Recurring [Member] | Mortgages, mortgage-backed and asset-backed | Netting
   
Assets:    
Trading assets, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Mortgages, mortgage-backed and asset-backed | Estimate of Fair Value, Fair Value Disclosure
   
Assets:    
Trading assets, excluding derivative contracts 9,495,000,000 8,254,000,000
Fair Value, Measurements, Recurring [Member] | Municipals and money markets | Level 1
   
Assets:    
Trading assets, excluding derivative contracts 1,077,000,000 1,067,000,000
Fair Value, Measurements, Recurring [Member] | Municipals and money markets | Level 2
   
Assets:    
Trading assets, excluding derivative contracts 8,567,000,000 9,755,000,000
Fair Value, Measurements, Recurring [Member] | Municipals and money markets | Level 3
   
Assets:    
Trading assets, excluding derivative contracts 1,730,000,000 2,047,000,000
Fair Value, Measurements, Recurring [Member] | Municipals and money markets | Netting
   
Assets:    
Trading assets, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Municipals and money markets | Estimate of Fair Value, Fair Value Disclosure
   
Assets:    
Trading assets, excluding derivative contracts 11,374,000,000 12,869,000,000
Fair Value, Measurements, Recurring [Member] | Physical commodities and other | Level 1
   
Assets:    
Trading assets, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | Physical commodities and other | Level 2
   
Assets:    
Trading assets, excluding derivative contracts 174,000,000 175,000,000
Fair Value, Measurements, Recurring [Member] | Physical commodities and other | Level 3
   
Assets:    
Trading assets, excluding derivative contracts 0 0
Fair Value, Measurements, Recurring [Member] | Physical commodities and other | Netting
   
Assets:    
Trading assets, excluding derivative contracts 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Physical commodities and other | Estimate of Fair Value, Fair Value Disclosure
   
Assets:    
Trading assets, excluding derivative contracts 174,000,000 175,000,000
Fair Value, Measurements, Recurring [Member] | Non-agency MBS | Level 1
   
Assets:    
Available-for-sale, fair value 0 0
Fair Value, Measurements, Recurring [Member] | Non-agency MBS | Level 2
   
Assets:    
Available-for-sale, fair value 57,000,000 249,000,000
Fair Value, Measurements, Recurring [Member] | Non-agency MBS | Level 3
   
Assets:    
Available-for-sale, fair value 0 0
Fair Value, Measurements, Recurring [Member] | Non-agency MBS | Netting
   
Assets:    
Available-for-sale, fair value 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Non-agency MBS | Estimate of Fair Value, Fair Value Disclosure
   
Assets:    
Available-for-sale, fair value 57,000,000 249,000,000
Fair Value, Measurements, Recurring [Member] | Corporate ABS | Level 1
   
Assets:    
Available-for-sale, fair value 0 0
Fair Value, Measurements, Recurring [Member] | Corporate ABS | Level 2
   
Assets:    
Available-for-sale, fair value 230,000,000 0
Fair Value, Measurements, Recurring [Member] | Corporate ABS | Level 3
   
Assets:    
Available-for-sale, fair value 8,000,000 47,000,000
Fair Value, Measurements, Recurring [Member] | Corporate ABS | Netting
   
Assets:    
Available-for-sale, fair value 0 [3] 0 [3]
Fair Value, Measurements, Recurring [Member] | Corporate ABS | Estimate of Fair Value, Fair Value Disclosure
   
Assets:    
Available-for-sale, fair value $ 238,000,000 $ 47,000,000
[1] Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay their obligations with or without prepayment penalties.
[2] Refer to Note 6 for product level detail.
[3] Represents counterparty and cash collateral netting.