Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Recurring Fair Value Inputs (Details)

v3.22.2
Fair Value Measurements - Recurring Fair Value Inputs (Details)
6 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
$ / security
$ / MMBTU
Dec. 31, 2021
USD ($)
$ / MMBTU
$ / security
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, primarily auction rate securities $ 7,980,000,000 $ 12,144,000,000
Long-term debt (28,375,000,000) (29,708,000,000)
Recurring    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, primarily auction rate securities 7,980,000,000 12,144,000,000
MSRs 963,000,000 818,000,000
Long-term debt (28,375,000,000) (29,708,000,000)
Recurring | Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Instruments backed by residential real estate assets 806,000,000 1,269,000,000
Instruments backed by commercial real estate assets 467,000,000 298,000,000
Commercial loans, debt securities and other 4,214,000,000 4,212,000,000
Other assets, primarily auction rate securities 1,750,000,000 1,572,000,000
MSRs 963,000,000 818,000,000
Long-term debt (812,000,000) (1,075,000,000)
Net derivative asset (liability) $ (1,682,000,000) $ (2,662,000,000)
Recurring | Level 3 | Yield | Minimum | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets 0 0
Commercial loans, debt securities and other 0.03 0
Recurring | Level 3 | Yield | Minimum | Discounted cash flow    
Fair Value Inputs [Abstract]    
Instruments backed by commercial real estate assets 0 0
Recurring | Level 3 | Yield | Minimum | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt 0.20 0
Recurring | Level 3 | Yield | Maximum | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets 0.25 0.25
Commercial loans, debt securities and other 1.45 0.19
Recurring | Level 3 | Yield | Maximum | Discounted cash flow    
Fair Value Inputs [Abstract]    
Instruments backed by commercial real estate assets 0.25 0.25
Recurring | Level 3 | Yield | Maximum | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt 1.45 0.19
Recurring | Level 3 | Yield | Weighted Average | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets 0.07 0.06
Commercial loans, debt securities and other 0.16 0.10
Recurring | Level 3 | Yield | Weighted Average | Discounted cash flow    
Fair Value Inputs [Abstract]    
Instruments backed by commercial real estate assets 0.06 0.04
Recurring | Level 3 | Yield | Weighted Average | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt 0.22 0.18
Recurring | Level 3 | Prepayment speed | Minimum | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets 0 0.01
Commercial loans, debt securities and other 0.10 0.10
Recurring | Level 3 | Prepayment speed | Maximum | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets 0.33 0.40
Commercial loans, debt securities and other 0.20 0.20
Recurring | Level 3 | Prepayment speed | Weighted Average | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets 0.14 0.19
Commercial loans, debt securities and other 0.16 0.16
Recurring | Level 3 | Default rate | Minimum | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets 0 0
Commercial loans, debt securities and other 0.03 0.03
Recurring | Level 3 | Default rate | Maximum | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets 0.03 0.03
Commercial loans, debt securities and other 0.04 0.04
Recurring | Level 3 | Default rate | Weighted Average | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets 0.01 0.01
Commercial loans, debt securities and other 0.04 0.04
Recurring | Level 3 | Price | Minimum | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets | $ / security 0 0
Commercial loans, debt securities and other 0 0
Other assets, primarily auction rate securities | $ / security 10 10
Recurring | Level 3 | Price | Minimum | Discounted cash flow    
Fair Value Inputs [Abstract]    
Instruments backed by commercial real estate assets | $ / security 0 0
Recurring | Level 3 | Price | Minimum | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt | $ / security 0 0
Recurring | Level 3 | Price | Maximum | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets | $ / security 120 168
Commercial loans, debt securities and other 157 189
Other assets, primarily auction rate securities | $ / security 95 96
Recurring | Level 3 | Price | Maximum | Discounted cash flow    
Fair Value Inputs [Abstract]    
Instruments backed by commercial real estate assets | $ / security 100 101
Recurring | Level 3 | Price | Maximum | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt | $ / security 100 125
Recurring | Level 3 | Price | Weighted Average | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets | $ / security 28 92
Commercial loans, debt securities and other | $ / security 73 73
Other assets, primarily auction rate securities | $ / security 93 91
Recurring | Level 3 | Price | Weighted Average | Discounted cash flow    
Fair Value Inputs [Abstract]    
Instruments backed by commercial real estate assets | $ / security 75 57
Recurring | Level 3 | Price | Weighted Average | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt | $ / security 71 82
Recurring | Level 3 | Loss severity | Minimum | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets 0 0
Commercial loans, debt securities and other 0.35 0.35
Recurring | Level 3 | Loss severity | Maximum | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets 1 0.43
Commercial loans, debt securities and other 0.40 0.40
Recurring | Level 3 | Loss severity | Weighted Average | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Instruments backed by residential real estate assets 0.24 0.13
Commercial loans, debt securities and other 0.37 0.37
Recurring | Level 3 | Discount rate | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Other assets, primarily auction rate securities 0.10 0.09
Recurring | Level 3 | Weighted-Average Life, Fixed Rate | Minimum | Discounted cash flow    
Fair Value Inputs [Abstract]    
MSRs 0 years 0 years
Recurring | Level 3 | Weighted-Average Life, Fixed Rate | Maximum | Discounted cash flow    
Fair Value Inputs [Abstract]    
MSRs 14 years 14 years
Recurring | Level 3 | Weighted-Average Life, Fixed Rate | Weighted Average | Discounted cash flow    
Fair Value Inputs [Abstract]    
MSRs 5 years 4 years
Recurring | Level 3 | Weighted-Average Life, Variable Rate | Minimum | Discounted cash flow    
Fair Value Inputs [Abstract]    
MSRs 0 years 0 years
Recurring | Level 3 | Weighted-Average Life, Variable Rate | Maximum | Discounted cash flow    
Fair Value Inputs [Abstract]    
MSRs 12 years 10 years
Recurring | Level 3 | Weighted-Average Life, Variable Rate | Weighted Average | Discounted cash flow    
Fair Value Inputs [Abstract]    
MSRs 3 years 3 years
Recurring | Level 3 | Option-adjusted spread, fixed rate | Minimum | Discounted cash flow    
Fair Value Inputs [Abstract]    
MSRs 0.07 0.07
Recurring | Level 3 | Option-adjusted spread, fixed rate | Maximum | Discounted cash flow    
Fair Value Inputs [Abstract]    
MSRs 0.14 0.14
Recurring | Level 3 | Option-adjusted spread, fixed rate | Weighted Average | Discounted cash flow    
Fair Value Inputs [Abstract]    
MSRs 0.09 0.09
Recurring | Level 3 | Option-adjusted spread, variable rate | Minimum | Discounted cash flow    
Fair Value Inputs [Abstract]    
MSRs 0.09 0.09
Recurring | Level 3 | Option-adjusted spread, variable rate | Maximum | Discounted cash flow    
Fair Value Inputs [Abstract]    
MSRs 0.15 0.15
Recurring | Level 3 | Option-adjusted spread, variable rate | Weighted Average | Discounted cash flow    
Fair Value Inputs [Abstract]    
MSRs 0.12 0.12
Recurring | Level 3 | Equity correlation | Minimum | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt 0 0.03
Recurring | Level 3 | Equity correlation | Maximum | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt 0.92 1
Recurring | Level 3 | Equity correlation | Weighted Average | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt 0.58 0.80
Recurring | Level 3 | Long-dated equity volatilities | Discounted cash flow, Market comparables    
Fair Value Inputs [Abstract]    
Commercial loans, debt securities and other   0.45
Recurring | Level 3 | Long-dated equity volatilities | Minimum | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt   0.05
Recurring | Level 3 | Long-dated equity volatilities | Maximum | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt   0.78
Recurring | Level 3 | Long-dated equity volatilities | Weighted Average | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt   0.36
Recurring | Level 3 | Natural gas forward price | Minimum | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt | $ / MMBTU 3 2
Recurring | Level 3 | Natural gas forward price | Maximum | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt | $ / MMBTU 8 8
Recurring | Level 3 | Natural gas forward price | Weighted Average | Discounted cash flow, Market comparables, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Long-term debt | $ / MMBTU 5 4
Recurring | Level 3 | Credit derivatives    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Net derivative asset (liability) $ (26,000,000) $ (104,000,000)
Recurring | Level 3 | Credit derivatives | Prepayment speed | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.15 0.15
Recurring | Level 3 | Credit derivatives | Default rate | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.02 0.02
Recurring | Level 3 | Credit derivatives | Price | Minimum | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) | $ / security 0 0
Recurring | Level 3 | Credit derivatives | Price | Maximum | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) | $ / security 151 120
Recurring | Level 3 | Credit derivatives | Price | Weighted Average | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) | $ / security 58 53
Recurring | Level 3 | Credit derivatives | Credit spreads | Minimum | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.0002 0.0007
Recurring | Level 3 | Credit derivatives | Credit spreads | Maximum | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.0176 0.0155
Recurring | Level 3 | Credit derivatives | Credit spreads | Weighted Average | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.0069 0.0061
Recurring | Level 3 | Credit derivatives | Upfront points | Minimum | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0 0.0016
Recurring | Level 3 | Credit derivatives | Upfront points | Maximum | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.0100 0.0100
Recurring | Level 3 | Credit derivatives | Upfront points | Weighted Average | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.0068 0.0068
Recurring | Level 3 | Credit derivatives | Credit correlation | Minimum | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.19 0.20
Recurring | Level 3 | Credit derivatives | Credit correlation | Maximum | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.60 0.60
Recurring | Level 3 | Credit derivatives | Credit correlation | Weighted Average | Discounted cash flow, Stochastic recovery correlation model    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.43 0.55
Recurring | Level 3 | Equity contracts    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Net derivative asset (liability) $ (1,283,000,000) $ (1,710,000,000)
Recurring | Level 3 | Equity contracts | Equity correlation | Minimum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.04 0.03
Recurring | Level 3 | Equity contracts | Equity correlation | Maximum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 1 1
Recurring | Level 3 | Equity contracts | Equity correlation | Weighted Average | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.86 0.80
Recurring | Level 3 | Equity contracts | Long-dated equity volatilities | Minimum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.05 0.05
Recurring | Level 3 | Equity contracts | Long-dated equity volatilities | Maximum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.91 0.78
Recurring | Level 3 | Equity contracts | Long-dated equity volatilities | Weighted Average | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.45 0.36
Recurring | Level 3 | Commodity contracts    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Net derivative asset (liability) $ (434,000,000) $ (976,000,000)
Recurring | Level 3 | Commodity contracts | Natural gas forward price | Minimum | Discounted cash flow, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 3 2
Recurring | Level 3 | Commodity contracts | Natural gas forward price | Maximum | Discounted cash flow, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 8 8
Recurring | Level 3 | Commodity contracts | Natural gas forward price | Weighted Average | Discounted cash flow, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 5 4
Recurring | Level 3 | Commodity contracts | Correlation | Minimum | Discounted cash flow, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities)   0.65
Recurring | Level 3 | Commodity contracts | Correlation | Maximum | Discounted cash flow, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities)   0.85
Recurring | Level 3 | Commodity contracts | Correlation | Weighted Average | Discounted cash flow, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities)   0.76
Recurring | Level 3 | Commodity contracts | Power forward price | Minimum | Discounted cash flow, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 17 11
Recurring | Level 3 | Commodity contracts | Power forward price | Maximum | Discounted cash flow, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 197 103
Recurring | Level 3 | Commodity contracts | Power forward price | Weighted Average | Discounted cash flow, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 50 32
Recurring | Level 3 | Commodity contracts | Volatilities | Minimum | Discounted cash flow, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities)   0.41
Recurring | Level 3 | Commodity contracts | Volatilities | Maximum | Discounted cash flow, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities)   0.69
Recurring | Level 3 | Commodity contracts | Volatilities | Weighted Average | Discounted cash flow, Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities)   0.63
Recurring | Level 3 | Interest rate contracts    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Net derivative asset (liability) $ 61,000,000 $ 128,000,000
Recurring | Level 3 | Interest rate contracts | Correlation (IR/IR) | Minimum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) (0.01) (0.01)
Recurring | Level 3 | Interest rate contracts | Correlation (IR/IR) | Maximum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.92 0.90
Recurring | Level 3 | Interest rate contracts | Correlation (IR/IR) | Weighted Average | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.66 0.54
Recurring | Level 3 | Interest rate contracts | Correlation (FX/IR) | Minimum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0 (0.01)
Recurring | Level 3 | Interest rate contracts | Correlation (FX/IR) | Maximum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.58 0.58
Recurring | Level 3 | Interest rate contracts | Correlation (FX/IR) | Weighted Average | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.45 0.44
Recurring | Level 3 | Interest rate contracts | Long-dated inflation rates | Minimum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) (0.16) (0.10)
Recurring | Level 3 | Interest rate contracts | Long-dated inflation rates | Maximum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.39 0.11
Recurring | Level 3 | Interest rate contracts | Long-dated inflation rates | Weighted Average | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.01 0.03
Recurring | Level 3 | Interest rate contracts | Long-dated inflation volatilities | Minimum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.02 0
Recurring | Level 3 | Interest rate contracts | Long-dated inflation volatilities | Maximum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.05 0.02
Recurring | Level 3 | Interest rate contracts | Long-dated inflation volatilities | Weighted Average | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.03 0.02
Recurring | Level 3 | Interest rate contracts | Interest rate volatilities | Minimum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0 0
Recurring | Level 3 | Interest rate contracts | Interest rate volatilities | Maximum | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.02 0.02
Recurring | Level 3 | Interest rate contracts | Interest rate volatilities | Weighted Average | Industry standard derivative pricing    
Fair Value Inputs [Abstract]    
Net derivative assets (liabilities) 0.01 0.01
Recurring | Level 3 | Mortgage trading loans, MBS and ABS    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Instruments backed by residential real estate assets $ 238,000,000 $ 338,000,000
Instruments backed by commercial real estate assets 73,000,000 77,000,000
Commercial loans, debt securities and other 1,075,000,000 1,112,000,000
Fair Value Inputs [Abstract]    
Loans and securities, fair value 1,400,000,000 1,500,000,000
Recurring | Level 3 | Loans and leases    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Instruments backed by residential real estate assets 157,000,000 373,000,000
Commercial loans, debt securities and other 99,000,000 375,000,000
Fair Value Inputs [Abstract]    
Loans and securities, fair value 256,000,000 748,000,000
Recurring | Level 3 | AFS debt securities – Non-agency residential    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Instruments backed by residential real estate assets 299,000,000 316,000,000
Fair Value Inputs [Abstract]    
Loans and securities, fair value 551,000,000 439,000,000
Recurring | Level 3 | Other debt securities carried at fair value – Non-agency residential    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Instruments backed by residential real estate assets 112,000,000 242,000,000
Fair Value Inputs [Abstract]    
Loans and securities, fair value 112,000,000 242,000,000
Recurring | Level 3 | Corporate securities, trading loans and other    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Instruments backed by commercial real estate assets 377,000,000 138,000,000
Commercial loans, debt securities and other 1,990,000,000 1,972,000,000
Fair Value Inputs [Abstract]    
Loans and securities, fair value 2,400,000,000 2,100,000,000
Recurring | Level 3 | Non-U.S. and other taxable securities    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Instruments backed by commercial real estate assets   71,000,000
Commercial loans, debt securities and other 200,000,000  
Recurring | Level 3 | Loans held-for-sale    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Instruments backed by commercial real estate assets 17,000,000 12,000,000
Commercial loans, debt securities and other 328,000,000 305,000,000
Fair Value Inputs [Abstract]    
Loans and securities, fair value 345,000,000 317,000,000
Recurring | Level 3 | Non-U.S. sovereign debt    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Commercial loans, debt securities and other 470,000,000 396,000,000
Fair Value Inputs [Abstract]    
Loans and securities, fair value 470,000,000 396,000,000
Recurring | Level 3 | Tax-exempt securities    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Commercial loans, debt securities and other 52,000,000 52,000,000
Recurring | Level 3 | Other assets, primarily auction rate securities    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, primarily auction rate securities 787,000,000 754,000,000
Recurring | Level 3 | Other Assets    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other assets, primarily auction rate securities $ 1,800,000,000 $ 1,600,000,000