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Fair Value Measurement - Recurring Basis (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Mar. 31, 2022
Dec. 31, 2021
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables $ 564,382 $ 639,593    
Derivative netting adjustments (505,108) (568,713)    
Net derivative receivables 59,274 70,880    
Trading assets 578,892 453,799    
Available-for-sale securities 197,248 205,857    
Loans 38,546 42,079    
Mortgage servicing rights 7,755 7,973 $ 7,294 $ 5,494
Gross derivative payables 562,085 637,513    
Derivative netting adjustments (517,374) (586,372)    
Net derivative payables 44,711 51,141    
Interest rate        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 285,539 300,415    
Derivative netting adjustments (260,511) (271,996)    
Net derivative receivables 25,028 28,419    
Gross derivative payables 274,728 290,291    
Derivative netting adjustments (261,428) (274,321)    
Net derivative payables 13,300 15,970    
Credit        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 12,047 10,329    
Derivative netting adjustments (11,054) (9,239)    
Net derivative receivables 993 1,090    
Gross derivative payables 12,428 9,971    
Derivative netting adjustments (11,576) (9,217)    
Net derivative payables 852 754    
Foreign exchange        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 185,680 241,579    
Derivative netting adjustments (166,455) (218,214)    
Net derivative receivables 19,225 23,365    
Gross derivative payables 187,622 251,521    
Derivative netting adjustments (174,408) (232,665)    
Net derivative payables 13,214 18,856    
Equity        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 61,457 61,913    
Derivative netting adjustments (53,729) (52,774)    
Net derivative receivables 7,728 9,139    
Gross derivative payables 66,545 62,461    
Derivative netting adjustments (56,697) (53,657)    
Net derivative payables 9,848 8,804    
Commodity        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 19,659 25,357    
Derivative netting adjustments (13,359) (16,490)    
Net derivative receivables 6,300 8,867    
Gross derivative payables 20,762 23,269    
Derivative netting adjustments (13,265) (16,512)    
Net derivative payables 7,497 6,757    
Total mortgage-backed securities        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 73,723 78,081    
Mortgage-backed securities, Commercial - nonagency        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 1,947 1,958    
U.S. Treasury, GSEs and government agencies        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 81,639 92,060    
Obligations of U.S. states and municipalities        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 13,529 6,786    
Non-U.S. government debt securities        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 19,430 19,696    
Corporate debt securities        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 364 357    
Asset-backed securities        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 8,563      
Asset-backed securities, Collateralized loan obligations        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 5,520 5,792    
Fair Value Measured at Net Asset Value Per Share        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets 40 43    
Fair value assets and liabilities measured on recurring basis - supplemental data        
Alternative investments, net asset value, fair value 976 950    
Other assets 936 907    
Recurring        
Assets and liabilities measured at fair value on a recurring basis        
Federal funds sold and securities purchased under resale agreements 309,336 311,883    
Securities borrowed 68,514 70,041    
Trading assets, debt and equity instruments 519,578 382,876    
Derivative netting adjustments (505,108) (568,713)    
Net derivative receivables 59,274 70,880    
Trading assets 578,852 453,756    
Available-for-sale securities 197,248 205,857    
Loans 38,546 42,079    
Mortgage servicing rights 7,755 7,973    
Total assets measured at fair value on a recurring basis 1,213,749 1,105,603    
Deposits 41,580 28,620    
Federal funds purchased and securities loaned or sold under repurchase agreements 192,290 151,999    
Short-term borrowings 18,074 15,792    
Trading liabilities, Debt and equity instruments 145,153 126,835    
Derivative netting adjustments (517,374) (586,372)    
Net derivative payables 44,711 51,141    
Trading liabilities 189,864 177,976    
Accounts payable and other liabilities 6,697 7,038    
Beneficial interests issued by consolidated VIEs 1 5    
Long-term debt 76,185 72,281    
Total liabilities measured at fair value on a recurring basis 524,691 453,711    
Recurring | Interest rate        
Assets and liabilities measured at fair value on a recurring basis        
Derivative netting adjustments (260,511) (271,996)    
Net derivative receivables 25,028 28,419    
Derivative netting adjustments (261,428) (274,321)    
Net derivative payables 13,300 15,970    
Recurring | Credit        
Assets and liabilities measured at fair value on a recurring basis        
Derivative netting adjustments (11,054) (9,239)    
Net derivative receivables 993 1,090    
Derivative netting adjustments (11,576) (9,217)    
Net derivative payables 852 754    
Recurring | Foreign exchange        
Assets and liabilities measured at fair value on a recurring basis        
Derivative netting adjustments (166,455) (218,214)    
Net derivative receivables 19,225 23,365    
Derivative netting adjustments (174,408) (232,665)    
Net derivative payables 13,214 18,856    
Recurring | Equity        
Assets and liabilities measured at fair value on a recurring basis        
Derivative netting adjustments (53,729) (52,774)    
Net derivative receivables 7,728 9,139    
Derivative netting adjustments (56,697) (53,657)    
Net derivative payables 9,848 8,804    
Recurring | Commodity        
Assets and liabilities measured at fair value on a recurring basis        
Derivative netting adjustments (13,359) (16,490)    
Net derivative receivables 6,300 8,867    
Derivative netting adjustments (13,265) (16,512)    
Net derivative payables 7,497 6,757    
Recurring | Other assets        
Assets and liabilities measured at fair value on a recurring basis        
Other assets 13,498 14,014    
Fair value assets and liabilities measured on recurring basis - supplemental data        
Other assets 14,434 14,921    
Recurring | Total debt instruments        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 345,779 253,188    
Recurring | Total mortgage-backed securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 82,360 72,879    
Available-for-sale securities 73,723 78,081    
Recurring | Mortgage-backed securities, U.S. GSEs and government agencies        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 78,163 68,921    
Available-for-sale securities 67,305 71,503    
Recurring | Mortgage-backed securities, Residential - nonagency        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 2,966 2,503    
Available-for-sale securities 4,471 4,620    
Recurring | Mortgage-backed securities, Commercial - nonagency        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 1,231 1,455    
Available-for-sale securities 1,947 1,958    
Recurring | U.S. Treasury, GSEs and government agencies        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 119,724 69,737    
Available-for-sale securities 81,639 92,060    
Recurring | Obligations of U.S. states and municipalities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 6,055 6,615    
Available-for-sale securities 13,529 6,786    
Recurring | Certificates of deposit, bankers’ acceptances and commercial paper        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 1,556 2,009    
Recurring | Non-U.S. government debt securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 91,145 66,797    
Available-for-sale securities 19,430 19,696    
Recurring | Corporate debt securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 32,952 26,089    
Available-for-sale securities 364 357    
Recurring | Loans        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 9,291 6,503    
Recurring | Asset-backed securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 2,696 2,559    
Recurring | Equity securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 140,454 85,208    
Recurring | Physical commodities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 15,959 26,270    
Recurring | Other        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 17,386 18,210    
Recurring | Asset-backed securities, Collateralized loan obligations        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 5,520 5,792    
Recurring | Asset-backed securities, Other        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 3,043 3,085    
Recurring | U.S. GSE obligations        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 78,900 73,800    
Recurring | Residential mortgage        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 10,200 9,700    
Recurring | Commercial mortgage        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 6,400 6,800    
Recurring | Residential conforming mortgage intended for sale to U.S. GSEs and government agencies        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 3,600 2,400    
Recurring | Level 1        
Assets and liabilities measured at fair value on a recurring basis        
Federal funds sold and securities purchased under resale agreements 0 0    
Securities borrowed 0 0    
Trading assets, debt and equity instruments 284,894 171,482    
Gross derivative receivables 2,865 3,559    
Trading assets 287,759 175,041    
Available-for-sale securities 92,220 102,654    
Loans 0 0    
Mortgage servicing rights 0 0    
Total assets measured at fair value on a recurring basis 386,219 285,239    
Deposits 0 0    
Federal funds purchased and securities loaned or sold under repurchase agreements 0 0    
Short-term borrowings 0 0    
Trading liabilities, Debt and equity instruments 113,813 98,719    
Gross derivative payables 4,226 2,803    
Trading liabilities 118,039 101,522    
Accounts payable and other liabilities 4,403 5,702    
Beneficial interests issued by consolidated VIEs 0 0    
Long-term debt 0 0    
Total liabilities measured at fair value on a recurring basis 122,442 107,224    
Recurring | Level 1 | Interest rate        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 2,702 3,390    
Gross derivative payables 4,082 2,643    
Recurring | Level 1 | Credit        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 0 0    
Gross derivative payables 0 0    
Recurring | Level 1 | Foreign exchange        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 163 169    
Gross derivative payables 144 160    
Recurring | Level 1 | Equity        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 0 0    
Gross derivative payables 0 0    
Recurring | Level 1 | Commodity        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 0 0    
Gross derivative payables 0 0    
Recurring | Level 1 | Other assets        
Assets and liabilities measured at fair value on a recurring basis        
Other assets 6,240 7,544    
Recurring | Level 1 | Total debt instruments        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 142,148 79,404    
Recurring | Level 1 | Total mortgage-backed securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 0    
Available-for-sale securities 0 3    
Recurring | Level 1 | Mortgage-backed securities, U.S. GSEs and government agencies        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 0    
Available-for-sale securities 0 3    
Recurring | Level 1 | Mortgage-backed securities, Residential - nonagency        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 0    
Available-for-sale securities 0 0    
Recurring | Level 1 | Mortgage-backed securities, Commercial - nonagency        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 0    
Available-for-sale securities 0 0    
Recurring | Level 1 | U.S. Treasury, GSEs and government agencies        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 110,866 61,191    
Available-for-sale securities 81,639 92,060    
Recurring | Level 1 | Obligations of U.S. states and municipalities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 0    
Available-for-sale securities 0 0    
Recurring | Level 1 | Certificates of deposit, bankers’ acceptances and commercial paper        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 0    
Recurring | Level 1 | Non-U.S. government debt securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 31,282 18,213    
Available-for-sale securities 10,581 10,591    
Recurring | Level 1 | Corporate debt securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 0    
Available-for-sale securities 0 0    
Recurring | Level 1 | Loans        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 0    
Recurring | Level 1 | Asset-backed securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 0    
Recurring | Level 1 | Equity securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 138,312 82,483    
Recurring | Level 1 | Physical commodities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 4,434 9,595    
Recurring | Level 1 | Other        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 0    
Recurring | Level 1 | Asset-backed securities, Collateralized loan obligations        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 0 0    
Recurring | Level 1 | Asset-backed securities, Other        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 0 0    
Recurring | Level 2        
Assets and liabilities measured at fair value on a recurring basis        
Federal funds sold and securities purchased under resale agreements 309,336 311,883    
Securities borrowed 68,514 70,041    
Trading assets, debt and equity instruments 231,545 208,485    
Gross derivative receivables 550,787 625,352    
Trading assets 782,332 833,837    
Available-for-sale securities 104,778 102,964    
Loans 37,067 40,661    
Mortgage servicing rights 0 0    
Total assets measured at fair value on a recurring basis 1,308,879 1,365,451    
Deposits 39,372 26,458    
Federal funds purchased and securities loaned or sold under repurchase agreements 192,290 151,999    
Short-term borrowings 16,664 14,391    
Trading liabilities, Debt and equity instruments 31,277 28,032    
Gross derivative payables 547,708 624,701    
Trading liabilities 578,985 652,733    
Accounts payable and other liabilities 2,238 1,283    
Beneficial interests issued by consolidated VIEs 1 5    
Long-term debt 50,958 48,189    
Total liabilities measured at fair value on a recurring basis 880,508 895,058    
Recurring | Level 2 | Interest rate        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 278,722 292,956    
Gross derivative payables 267,285 284,280    
Recurring | Level 2 | Credit        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 11,070 9,722    
Gross derivative payables 11,903 9,377    
Recurring | Level 2 | Foreign exchange        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 184,299 240,207    
Gross derivative payables 186,805 250,647    
Recurring | Level 2 | Equity        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 57,478 57,485    
Gross derivative payables 61,681 57,649    
Recurring | Level 2 | Commodity        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 19,218 24,982    
Gross derivative payables 20,034 22,748    
Recurring | Level 2 | Other assets        
Assets and liabilities measured at fair value on a recurring basis        
Other assets 6,852 6,065    
Recurring | Level 2 | Total debt instruments        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 201,213 171,606    
Recurring | Level 2 | Total mortgage-backed securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 81,588 72,108    
Available-for-sale securities 73,723 78,078    
Recurring | Level 2 | Mortgage-backed securities, U.S. GSEs and government agencies        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 77,406 68,162    
Available-for-sale securities 67,305 71,500    
Recurring | Level 2 | Mortgage-backed securities, Residential - nonagency        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 2,961 2,498    
Available-for-sale securities 4,471 4,620    
Recurring | Level 2 | Mortgage-backed securities, Commercial - nonagency        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 1,221 1,448    
Available-for-sale securities 1,947 1,958    
Recurring | Level 2 | U.S. Treasury, GSEs and government agencies        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 8,858 8,546    
Available-for-sale securities 0 0    
Recurring | Level 2 | Obligations of U.S. states and municipalities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 6,049 6,608    
Available-for-sale securities 13,529 6,786    
Recurring | Level 2 | Certificates of deposit, bankers’ acceptances and commercial paper        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 1,556 2,009    
Recurring | Level 2 | Non-U.S. government debt securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 59,694 48,429    
Available-for-sale securities 8,849 9,105    
Recurring | Level 2 | Corporate debt securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 32,414 25,626    
Available-for-sale securities 114 118    
Recurring | Level 2 | Loans        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 8,365 5,744    
Recurring | Level 2 | Asset-backed securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 2,689 2,536    
Recurring | Level 2 | Equity securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 1,561 2,060    
Recurring | Level 2 | Physical commodities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 11,525 16,673    
Recurring | Level 2 | Other        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 17,246 18,146    
Recurring | Level 2 | Asset-backed securities, Collateralized loan obligations        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 5,520 5,792    
Recurring | Level 2 | Asset-backed securities, Other        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 3,043 3,085    
Recurring | Level 3        
Assets and liabilities measured at fair value on a recurring basis        
Federal funds sold and securities purchased under resale agreements 0 0    
Securities borrowed 0 0    
Trading assets, debt and equity instruments 3,139 2,909    
Gross derivative receivables 10,730 10,682    
Trading assets 13,869 13,591    
Available-for-sale securities 250 239    
Loans 1,479 1,418    
Mortgage servicing rights 7,755 7,973    
Total assets measured at fair value on a recurring basis 23,759 23,626    
Deposits 2,208 2,162    
Federal funds purchased and securities loaned or sold under repurchase agreements 0 0    
Short-term borrowings 1,410 1,401    
Trading liabilities, Debt and equity instruments 63 84    
Gross derivative payables 10,151 10,009    
Trading liabilities 10,214 10,093    
Accounts payable and other liabilities 56 53    
Beneficial interests issued by consolidated VIEs 0 0    
Long-term debt 25,227 24,092    
Total liabilities measured at fair value on a recurring basis 39,115 37,801    
Recurring | Level 3 | Interest rate        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 4,115 4,069    
Gross derivative payables 3,361 3,368    
Recurring | Level 3 | Credit        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 977 607    
Gross derivative payables 525 594    
Recurring | Level 3 | Foreign exchange        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 1,218 1,203    
Gross derivative payables 673 714    
Recurring | Level 3 | Equity        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 3,979 4,428    
Gross derivative payables 4,864 4,812    
Recurring | Level 3 | Commodity        
Assets and liabilities measured at fair value on a recurring basis        
Gross derivative receivables 441 375    
Gross derivative payables 728 521    
Recurring | Level 3 | Other assets        
Assets and liabilities measured at fair value on a recurring basis        
Other assets 406 405    
Recurring | Level 3 | Total debt instruments        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 2,418 2,178    
Recurring | Level 3 | Total mortgage-backed securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 772 771    
Available-for-sale securities 0 0    
Recurring | Level 3 | Mortgage-backed securities, U.S. GSEs and government agencies        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 757 759    
Available-for-sale securities 0 0    
Recurring | Level 3 | Mortgage-backed securities, Residential - nonagency        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 5 5    
Available-for-sale securities 0 0    
Recurring | Level 3 | Mortgage-backed securities, Commercial - nonagency        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 10 7    
Available-for-sale securities 0 0    
Recurring | Level 3 | U.S. Treasury, GSEs and government agencies        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 0    
Available-for-sale securities 0 0    
Recurring | Level 3 | Obligations of U.S. states and municipalities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 6 7    
Available-for-sale securities 0 0    
Recurring | Level 3 | Certificates of deposit, bankers’ acceptances and commercial paper        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 0    
Recurring | Level 3 | Non-U.S. government debt securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 169 155    
Available-for-sale securities 0 0    
Recurring | Level 3 | Corporate debt securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 538 463    
Available-for-sale securities 250 239    
Recurring | Level 3 | Loans        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 926 759    
Recurring | Level 3 | Asset-backed securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 7 23    
Recurring | Level 3 | Equity securities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 581 665    
Recurring | Level 3 | Physical commodities        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 0 2    
Recurring | Level 3 | Other        
Assets and liabilities measured at fair value on a recurring basis        
Trading assets, debt and equity instruments 140 64    
Recurring | Level 3 | Asset-backed securities, Collateralized loan obligations        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities 0 0    
Recurring | Level 3 | Asset-backed securities, Other        
Assets and liabilities measured at fair value on a recurring basis        
Available-for-sale securities $ 0 $ 0