XML 111 R82.htm IDEA: XBRL DOCUMENT v3.24.0.1
Fair Value Measurement - Level 3 Inputs (Details)
$ in Millions
Dec. 31, 2023
USD ($)
$ / bbl
$ / shares
$ / MMBTU
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Loans $ 38,851 $ 42,079    
MSRs 8,522 7,973 $ 5,494 $ 3,276
Equity securities without readily determinable fair values $ 4,457 4,096    
Assumed par value for price input (in dollars per share) | $ / shares $ 100      
Level 3 | Discounted cash flows | Yield | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.05      
Level 3 | Discounted cash flows | Yield | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.20      
Level 3 | Discounted cash flows | Yield | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.12      
Level 3 | Discounted cash flows | Loss severity | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0      
Level 3 | Discounted cash flows | Loss severity | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 1      
Level 3 | Discounted cash flows | Loss severity | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.50      
Level 3 | Discounted cash flows | Credit correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.35      
Level 3 | Discounted cash flows | Credit correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.70      
Level 3 | Discounted cash flows | Credit correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.51      
Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans | Yield | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input 0      
Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans | Yield | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input 0.72      
Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans | Yield | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input 0.07      
Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans | Prepayment speed | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input 0.03      
Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans | Prepayment speed | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input 0.12      
Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans | Prepayment speed | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input 0.09      
Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans | Conditional default rate | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input 0      
Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans | Conditional default rate | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input 0.06      
Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans | Conditional default rate | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input 0      
Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans | Loss severity | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input 0      
Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans | Loss severity | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input 1.10      
Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans | Loss severity | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input 0.03      
Level 3 | Discounted cash flows | Net interest rate derivatives | Prepayment speed | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0      
Level 3 | Discounted cash flows | Net interest rate derivatives | Prepayment speed | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.20      
Level 3 | Discounted cash flows | Net interest rate derivatives | Prepayment speed | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.05      
Level 3 | Discounted cash flows | Net credit derivatives | Credit correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.35      
Level 3 | Discounted cash flows | Net credit derivatives | Credit correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.70      
Level 3 | Discounted cash flows | Net credit derivatives | Credit correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.51      
Level 3 | Discounted cash flows | Net credit derivatives | Credit spread | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0      
Level 3 | Discounted cash flows | Net credit derivatives | Credit spread | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.3617      
Level 3 | Discounted cash flows | Net credit derivatives | Credit spread | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.0384      
Level 3 | Discounted cash flows | Net credit derivatives | Recovery rate | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.10      
Level 3 | Discounted cash flows | Net credit derivatives | Recovery rate | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.90      
Level 3 | Discounted cash flows | Net credit derivatives | Recovery rate | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.55      
Level 3 | Discounted cash flows | Net foreign exchange derivatives | Prepayment speed | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.11      
Level 3 | Discounted cash flows | Net foreign exchange derivatives | Prepayment speed | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.11      
Level 3 | Discounted cash flows | Net foreign exchange derivatives | Prepayment speed | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.11      
Level 3 | Discounted cash flows | Net foreign exchange derivatives | Interest rate curve | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.02      
Level 3 | Discounted cash flows | Net foreign exchange derivatives | Interest rate curve | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.17      
Level 3 | Discounted cash flows | Net foreign exchange derivatives | Interest rate curve | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.07      
Level 3 | Market comparables | Commercial mortgage-backed securities and loans | Price | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input | $ / shares 0      
Level 3 | Market comparables | Commercial mortgage-backed securities and loans | Price | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input | $ / shares 90      
Level 3 | Market comparables | Commercial mortgage-backed securities and loans | Price | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans, measurement input | $ / shares 80      
Level 3 | Market comparables | Corporate debt securities | Price | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities, trading, measurement input | $ / shares 0      
Level 3 | Market comparables | Corporate debt securities | Price | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities, trading, measurement input | $ / shares 242      
Level 3 | Market comparables | Corporate debt securities | Price | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities, trading, measurement input | $ / shares 98      
Level 3 | Market comparables | Loans | Price | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Loans, measurement input | $ / shares 0      
Level 3 | Market comparables | Loans | Price | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Loans, measurement input | $ / shares 108      
Level 3 | Market comparables | Loans | Price | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Loans, measurement input | $ / shares 79      
Level 3 | Market comparables | Non-U.S. government debt securities | Price | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities, trading, measurement input | $ / shares 2      
Level 3 | Market comparables | Non-U.S. government debt securities | Price | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities, trading, measurement input | $ / shares 109      
Level 3 | Market comparables | Non-U.S. government debt securities | Price | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities, trading, measurement input | $ / shares 91      
Level 3 | Market comparables | Net credit derivatives | Price | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs | $ / shares 0      
Level 3 | Market comparables | Net credit derivatives | Price | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs | $ / shares 115      
Level 3 | Market comparables | Net credit derivatives | Price | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs | $ / shares 73      
Level 3 | Option pricing | Interest rate volatility | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.0025      
Level 3 | Option pricing | Interest rate volatility | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.0420      
Level 3 | Option pricing | Interest rate volatility | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.0117      
Level 3 | Option pricing | Interest rate correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs (0.82)      
Level 3 | Option pricing | Interest rate correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.90      
Level 3 | Option pricing | Interest rate correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.19      
Level 3 | Option pricing | IR-FX correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs (0.35)      
Level 3 | Option pricing | IR-FX correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.60      
Level 3 | Option pricing | IR-FX correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.05      
Level 3 | Option pricing | Equity correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.15      
Level 3 | Option pricing | Equity correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 1      
Level 3 | Option pricing | Equity correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.57      
Level 3 | Option pricing | Equity-FX correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs (0.88)      
Level 3 | Option pricing | Equity-FX correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.65      
Level 3 | Option pricing | Equity-FX correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs (0.30)      
Level 3 | Option pricing | Equity-IR correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs (0.19)      
Level 3 | Option pricing | Equity-IR correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.20      
Level 3 | Option pricing | Equity-IR correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.12      
Level 3 | Option pricing | Bermudan switch value | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0      
Level 3 | Option pricing | Bermudan switch value | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.54      
Level 3 | Option pricing | Bermudan switch value | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits, measurement inputs 0.19      
Level 3 | Option pricing | Net interest rate derivatives | Interest rate volatility | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.0025      
Level 3 | Option pricing | Net interest rate derivatives | Interest rate volatility | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.0420      
Level 3 | Option pricing | Net interest rate derivatives | Interest rate volatility | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.0117      
Level 3 | Option pricing | Net interest rate derivatives | Interest rate spread volatility | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.0037      
Level 3 | Option pricing | Net interest rate derivatives | Interest rate spread volatility | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.0077      
Level 3 | Option pricing | Net interest rate derivatives | Interest rate spread volatility | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.0064      
Level 3 | Option pricing | Net interest rate derivatives | Interest rate correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs (0.82)      
Level 3 | Option pricing | Net interest rate derivatives | Interest rate correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.90      
Level 3 | Option pricing | Net interest rate derivatives | Interest rate correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.19      
Level 3 | Option pricing | Net interest rate derivatives | IR-FX correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs (0.35)      
Level 3 | Option pricing | Net interest rate derivatives | IR-FX correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.60      
Level 3 | Option pricing | Net interest rate derivatives | IR-FX correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.05      
Level 3 | Option pricing | Net interest rate derivatives | Bermudan switch value | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0      
Level 3 | Option pricing | Net interest rate derivatives | Bermudan switch value | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.54      
Level 3 | Option pricing | Net interest rate derivatives | Bermudan switch value | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.19      
Level 3 | Option pricing | Net foreign exchange derivatives | IR-FX correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs (0.40)      
Level 3 | Option pricing | Net foreign exchange derivatives | IR-FX correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.60      
Level 3 | Option pricing | Net foreign exchange derivatives | IR-FX correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.20      
Level 3 | Option pricing | Net equity derivatives | Forward equity price | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs (0.19)      
Level 3 | Option pricing | Net equity derivatives | Forward equity price | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.20      
Level 3 | Option pricing | Net equity derivatives | Forward equity price | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.12      
Level 3 | Option pricing | Net equity derivatives | Equity volatility | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.74      
Level 3 | Option pricing | Net equity derivatives | Equity volatility | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 1.48      
Level 3 | Option pricing | Net equity derivatives | Equity volatility | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 1      
Level 3 | Option pricing | Net equity derivatives | Equity correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.03      
Level 3 | Option pricing | Net equity derivatives | Equity correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 1.45      
Level 3 | Option pricing | Net equity derivatives | Equity correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.28      
Level 3 | Option pricing | Net equity derivatives | Equity-FX correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.15      
Level 3 | Option pricing | Net equity derivatives | Equity-FX correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 1      
Level 3 | Option pricing | Net equity derivatives | Equity-FX correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.57      
Level 3 | Option pricing | Net equity derivatives | Equity-IR correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs (0.88)      
Level 3 | Option pricing | Net equity derivatives | Equity-IR correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.65      
Level 3 | Option pricing | Net equity derivatives | Equity-IR correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs (0.30)      
Level 3 | Option pricing | Net commodity derivatives | Oil commodity forward | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs | $ / bbl 84      
Level 3 | Option pricing | Net commodity derivatives | Oil commodity forward | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs | $ / bbl 270      
Level 3 | Option pricing | Net commodity derivatives | Oil commodity forward | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs | $ / bbl 177      
Level 3 | Option pricing | Net commodity derivatives | Natural gas commodity forward | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs | $ / MMBTU 2      
Level 3 | Option pricing | Net commodity derivatives | Natural gas commodity forward | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs | $ / MMBTU 6      
Level 3 | Option pricing | Net commodity derivatives | Natural gas commodity forward | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs | $ / MMBTU 4      
Level 3 | Option pricing | Net commodity derivatives | Commodity volatility | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.17      
Level 3 | Option pricing | Net commodity derivatives | Commodity volatility | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.20      
Level 3 | Option pricing | Net commodity derivatives | Commodity volatility | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.18      
Level 3 | Option pricing | Net commodity derivatives | Commodity correlation | Minimum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs (0.35)      
Level 3 | Option pricing | Net commodity derivatives | Commodity correlation | Maximum        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.98      
Level 3 | Option pricing | Net commodity derivatives | Commodity correlation | Average        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability), measurement inputs 0.31      
Recurring        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Loans $ 38,851 42,079    
MSRs 8,522 7,973    
Long-term debt, short-term borrowings, and deposits 541,419 453,711    
Recurring | Level 3        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Loans 3,079 1,418    
MSRs 8,522 7,973    
Long-term debt, short-term borrowings, and deposits 42,182 $ 37,801    
Other level 3 assets and liabilities, net 920      
Equity securities without readily determinable fair values 671      
Recurring | Level 3 | Other assets        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Equity securities without readily determinable fair values 544      
Recurring | Level 3 | Discounted cash flows        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
MSRs 8,522      
Long-term debt, short-term borrowings, and deposits 1,239      
Recurring | Level 3 | Discounted cash flows | Residential mortgage-backed securities and loans        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans 1,743      
Recurring | Level 3 | Discounted cash flows | Non-trading loans | Residential mortgage-backed securities        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans 980      
Recurring | Level 3 | Discounted cash flows | Net interest rate derivatives        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability) 7      
Recurring | Level 3 | Discounted cash flows | Net credit derivatives        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability) 233      
Recurring | Level 3 | Discounted cash flows | Net foreign exchange derivatives        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability) (66)      
Recurring | Level 3 | Discounted cash flows | Mortgage-backed securities, U.S. GSEs and government agencies | Residential mortgage-backed securities        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans 758      
Recurring | Level 3 | Discounted cash flows | Residential mortgage-backed securities | Residential mortgage-backed securities        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans 5      
Recurring | Level 3 | Market comparables | Commercial mortgage-backed securities and loans        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans 1,460      
Recurring | Level 3 | Market comparables | Corporate debt securities        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities, trading 484      
Recurring | Level 3 | Market comparables | Loans        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Loans 1,335      
Recurring | Level 3 | Market comparables | Trading loans        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Loans 619      
Recurring | Level 3 | Market comparables | Trading loans | Commercial        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans 65      
Recurring | Level 3 | Market comparables | Non-trading loans        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Loans 716      
Recurring | Level 3 | Market comparables | Non-trading loans | Commercial        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans 1,400      
Recurring | Level 3 | Market comparables | Non-U.S. government debt securities        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities, trading 179      
Recurring | Level 3 | Market comparables | Net credit derivatives        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability) 32      
Recurring | Level 3 | Market comparables | Commercial | Commercial        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Debt securities and loans 12      
Recurring | Level 3 | Option pricing        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Long-term debt, short-term borrowings, and deposits 30,078      
Recurring | Level 3 | Option pricing | Net interest rate derivatives        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability) 495      
Recurring | Level 3 | Option pricing | Net foreign exchange derivatives        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability) 128      
Recurring | Level 3 | Option pricing | Net equity derivatives        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability) (2,402)      
Recurring | Level 3 | Option pricing | Net commodity derivatives        
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Net derivative asset (liability) $ (279)