Quarterly report pursuant to Section 13 or 15(d)

Fair Value Disclosures (Details)

v2.4.0.6
Fair Value Disclosures (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2011
Sep. 30, 2011
Sep. 30, 2012
Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Reclassification from Derivative Contracts to Other Assets $ 1,600,000,000 $ 1,600,000,000    
Assets:        
Receivables under securities borrowed transactions     1,258,000,000 259,000,000
Derivative contracts     26,621,000,000 35,013,000,000
Available-for-sale, fair value     822,000,000 [1] 694,000,000
Total Investment securities     159,000,000 244,000,000
Liabilities:        
Payables under repurchase agreements     99,587,000,000 85,652,000,000
Long-term borrowings     31,499,000,000 30,325,000,000
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount     1,740,000,000  
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]
       
Liabilities:        
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount     640,000,000  
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     3,778,000,000 1,796,000,000
Receivables under resale agreements     0 0
Receivables under securities borrowed transactions     0 0
Trading assets, excluding derivative contracts     79,988,000,000 66,238,000,000
Derivative contracts     2,448,000,000 [2] 1,810,000,000 [2]
Available-for-sale, fair value     405,000,000 398,000,000
Investment securities non-qualifying     2,693,000,000 2,624,000,000
Total Investment securities     3,098,000,000 3,022,000,000
Securities received as collateral     14,267,000,000 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     55,139,000,000 42,931,000,000
Derivative contracts     2,062,000,000 [2] 1,419,000,000 [2]
Obligation to return securities received as collateral     14,267,000,000 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     1,980,000,000 2,792,000,000
Receivables under resale agreements     99,587,000,000 85,652,000,000
Receivables under securities borrowed transactions     1,258,000,000 259,000,000
Trading assets, excluding derivative contracts     70,809,000,000 61,171,000,000
Derivative contracts     680,484,000,000 [2] 722,108,000,000 [2]
Available-for-sale, fair value     409,000,000 249,000,000
Investment securities non-qualifying     711,000,000 328,000,000
Total Investment securities     1,120,000,000 577,000,000
Securities received as collateral     464,000,000 658,000,000
Loans, Notes and Mortgages at Fair Value     1,001,000,000 596,000,000
Other assets     0 0
Liabilities:        
Payables under repurchase agreements     53,635,000,000 34,235,000,000
Short-term borrowings     3,309,000,000 5,908,000,000
Trading liabilities, excluding derivative contracts     13,450,000,000 10,438,000,000
Derivative contracts     681,830,000,000 [2] 724,713,000,000 [2]
Obligation to return securities received as collateral     464,000,000 658,000,000
Other payables - interest and other     80,000,000 163,000,000
Long-term borrowings     30,044,000,000 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     8,973,000,000 10,055,000,000
Derivative contracts     6,875,000,000 [2] 10,110,000,000 [2]
Available-for-sale, fair value     8,000,000 47,000,000
Investment securities non-qualifying     354,000,000 574,000,000
Total Investment securities     362,000,000 621,000,000
Securities received as collateral     0 0
Loans, Notes and Mortgages at Fair Value     1,679,000,000 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     71,000,000 113,000,000
Derivative contracts     4,429,000,000 [2] 5,615,000,000 [2]
Obligation to return securities received as collateral     0 0
Other payables - interest and other     9,000,000 10,000,000
Long-term borrowings     1,455,000,000 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     (663,186,000,000) [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     (665,750,000,000) [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     5,758,000,000 4,588,000,000
Receivables under resale agreements     99,587,000,000 85,652,000,000
Receivables under securities borrowed transactions     1,258,000,000 259,000,000
Trading assets, excluding derivative contracts     159,770,000,000 137,464,000,000
Derivative contracts     26,621,000,000 [2] 35,013,000,000 [2]
Available-for-sale, fair value     822,000,000 694,000,000
Investment securities non-qualifying     3,758,000,000 3,526,000,000
Total Investment securities     4,580,000,000 4,220,000,000
Securities received as collateral     14,731,000,000 13,716,000,000
Loans, Notes and Mortgages at Fair Value     2,680,000,000 2,322,000,000
Other assets     1,263,000,000 1,349,000,000
Liabilities:        
Payables under repurchase agreements     53,635,000,000 34,235,000,000
Short-term borrowings     3,309,000,000 5,908,000,000
Trading liabilities, excluding derivative contracts     68,660,000,000 53,482,000,000
Derivative contracts     22,571,000,000 [2] 26,239,000,000 [2]
Obligation to return securities received as collateral     14,731,000,000 13,716,000,000
Other payables - interest and other     89,000,000 173,000,000
Long-term borrowings     31,499,000,000 30,325,000,000
Fair Value, Measurements, Recurring [Member] | Equities | Level 1
       
Liabilities:        
Trading liabilities, excluding derivative contracts     17,041,000,000 10,868,000,000
Fair Value, Measurements, Recurring [Member] | Equities | Level 2
       
Liabilities:        
Trading liabilities, excluding derivative contracts     2,305,000,000 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     19,346,000,000 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     242,000,000 125,000,000
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     242,000,000 125,000,000
Fair Value, Measurements, Recurring [Member] | Non-U.S. governments and agencies | Level 1
       
Liabilities:        
Trading liabilities, excluding derivative contracts     20,294,000,000 15,911,000,000
Fair Value, Measurements, Recurring [Member] | Non-U.S. governments and agencies | Level 2
       
Liabilities:        
Trading liabilities, excluding derivative contracts     1,060,000,000 643,000,000
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     21,354,000,000 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     9,019,000,000 6,927,000,000
Fair Value, Measurements, Recurring [Member] | Corporate debt | Level 3
       
Liabilities:        
Trading liabilities, excluding derivative contracts     20,000,000 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     9,039,000,000 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     154,000,000 89,000,000
Fair Value, Measurements, Recurring [Member] | Preferred stock | Level 3
       
Liabilities:        
Trading liabilities, excluding derivative contracts     0 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     154,000,000 105,000,000
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Level 1
       
Liabilities:        
Trading liabilities, excluding derivative contracts     17,401,000,000 15,603,000,000
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Level 2
       
Liabilities:        
Trading liabilities, excluding derivative contracts     596,000,000 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     17,997,000,000 16,976,000,000
Fair Value, Measurements, Recurring [Member] | Municipals, money markets and other | Level 1
       
Liabilities:        
Trading liabilities, excluding derivative contracts     403,000,000 549,000,000
Fair Value, Measurements, Recurring [Member] | Municipals, money markets and other | Level 2
       
Liabilities:        
Trading liabilities, excluding derivative contracts     74,000,000 51,000,000
Fair Value, Measurements, Recurring [Member] | Municipals, money markets and other | Level 3
       
Liabilities:        
Trading liabilities, excluding derivative contracts     51,000,000 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     528,000,000 645,000,000
Fair Value, Measurements, Recurring [Member] | Corporate debt | Level 1
       
Assets:        
Securities segregated for regulatory purposes or deposited with clearing organizations       0
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       295,000,000
Trading assets, excluding derivative contracts     13,895,000,000 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
Trading assets, excluding derivative contracts     2,002,000,000 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]
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       295,000,000
Trading assets, excluding derivative contracts     15,897,000,000 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     431,000,000 0
Trading assets, excluding derivative contracts     35,110,000,000 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     1,729,000,000 1,757,000,000
Trading assets, excluding derivative contracts     3,392,000,000 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     303,000,000 342,000,000
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     2,160,000,000 1,757,000,000
Trading assets, excluding derivative contracts     38,805,000,000 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     3,347,000,000 1,796,000,000
Trading assets, excluding derivative contracts     21,920,000,000 22,183,000,000
Available-for-sale, fair value     405,000,000 398,000,000
Fair Value, Measurements, Recurring [Member] | U.S. Government and agencies | Level 2
       
Assets:        
Securities segregated for regulatory purposes or deposited with clearing organizations     251,000,000 740,000,000
Trading assets, excluding derivative contracts     23,942,000,000 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     3,598,000,000 2,536,000,000
Trading assets, excluding derivative contracts     45,862,000,000 43,003,000,000
Available-for-sale, fair value     405,000,000 398,000,000
Fair Value, Measurements, Recurring [Member] | Equities | Level 1
       
Assets:        
Trading assets, excluding derivative contracts     21,821,000,000 14,962,000,000
Fair Value, Measurements, Recurring [Member] | Equities | Level 2
       
Assets:        
Trading assets, excluding derivative contracts     10,719,000,000 5,860,000,000
Fair Value, Measurements, Recurring [Member] | Equities | Level 3
       
Assets:        
Trading assets, excluding derivative contracts     120,000,000 179,000,000
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     32,660,000,000 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     4,457,000,000 4,519,000,000
Fair Value, Measurements, Recurring [Member] | Convertible debentures | Level 3
       
Assets:        
Trading assets, excluding derivative contracts     33,000,000 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     4,490,000,000 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     96,000,000 89,000,000
Fair Value, Measurements, Recurring [Member] | Preferred stock | Level 3
       
Assets:        
Trading assets, excluding derivative contracts     267,000,000 227,000,000
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     363,000,000 316,000,000
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     5,231,000,000 5,055,000,000
Fair Value, Measurements, Recurring [Member] | Mortgages, mortgage-backed and asset-backed | Level 3
       
Assets:        
Trading assets, excluding derivative contracts     4,738,000,000 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     9,969,000,000 8,254,000,000
Fair Value, Measurements, Recurring [Member] | Municipals and money markets | Level 1
       
Assets:        
Trading assets, excluding derivative contracts     1,137,000,000 1,067,000,000
Fair Value, Measurements, Recurring [Member] | Municipals and money markets | Level 2
       
Assets:        
Trading assets, excluding derivative contracts     8,627,000,000 9,755,000,000
Fair Value, Measurements, Recurring [Member] | Municipals and money markets | Level 3
       
Assets:        
Trading assets, excluding derivative contracts     1,510,000,000 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     11,274,000,000 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     450,000,000 175,000,000
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     450,000,000 175,000,000
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     45,000,000 249,000,000
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     45,000,000 249,000,000
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     364,000,000 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     $ 372,000,000 $ 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.