Fair Value Measurement - Recurring Basis (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	$ 961,878	$ 1,328,428
Amounts netted on the Consolidated balance sheets	(902,201)	(1,249,453)
Derivative receivables balance	59,677	78,975
Trading assets	343,839	398,988
Available-for-sale securities	241,754	298,752
Mortgage servicing rights	6,608	7,436	$ 9,614	$ 7,614
Derivative payables, gross	942,912	1,310,773
Derivative netting adjustments	(890,122)	(1,239,657)
Derivative payables, net	52,790	71,116
Fair value assets and liabilities measured on recurring basis - supplemental data
Alternative investments, net asset value, fair value	1,200	1,500
Reduction in level 3 derivative receivable and derivative payable balances	546	2,500
Costs of the private equity investment portfolio	3,500	6,000
Fair Value Hierarchy, Previous Classification, Level 2
Fair value assets and liabilities measured on recurring basis - supplemental data
Alternative investments, net asset value, fair value		337
Fair Value Hierarchy, Previous Classification, Level 3
Fair value assets and liabilities measured on recurring basis - supplemental data
Alternative investments, net asset value, fair value		1,200
Trading assets
Fair value assets and liabilities measured on recurring basis - supplemental data
Alternative investments, net asset value, fair value	61	124
Other assets
Fair value assets and liabilities measured on recurring basis - supplemental data
Alternative investments, net asset value, fair value	1,200	1,400
Interest rate
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	669,611	950,257
Amounts netted on the Consolidated balance sheets	(643,248)	(916,532)
Derivative receivables balance	26,363	33,725
Derivative payables, gross	635,166	918,379
Derivative netting adjustments	(624,945)	(900,634)
Derivative payables, net	10,221	17,745
Credit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	51,468	76,842
Amounts netted on the Consolidated balance sheets	(50,045)	(75,004)
Derivative receivables balance	1,423	1,838
Derivative payables, gross	50,529	75,895
Derivative netting adjustments	(48,988)	(74,302)
Derivative payables, net	1,541	1,593
Foreign exchange
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	179,875	215,187
Amounts netted on the Consolidated balance sheets	(162,698)	(193,934)
Derivative receivables balance	17,177	21,253
Derivative payables, gross	190,900	224,614
Derivative netting adjustments	(171,131)	(201,644)
Derivative payables, net	19,769	22,970
Equity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	35,859	42,489
Amounts netted on the Consolidated balance sheets	(30,330)	(34,312)
Derivative receivables balance	5,529	8,177
Derivative payables, gross	38,663	46,262
Derivative netting adjustments	(29,480)	(34,522)
Derivative payables, net	9,183	11,740
Commodity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	25,065	43,653
Amounts netted on the Consolidated balance sheets	(15,880)	(29,671)
Derivative receivables balance	9,185	13,982
Derivative payables, gross	27,654	45,623
Derivative netting adjustments	(15,578)	(28,555)
Derivative payables, net	12,076	17,068
US government-sponsored and enterprises obligations
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	42,300	59,300
Residential real estate
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	11,800	17,000
Total retained loans
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	4,300	5,800
Residential conforming mortgage intended for sale to government agency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	5,300	7,700
Reverse mortgage
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	2,500	3,400
Recurring
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Federal funds sold and securities purchased under resale agreements	23,141	28,585
Securities borrowed	395	992
Trading assets	284,101	319,889
Amounts netted on the Consolidated balance sheets	(902,201)	(1,249,453)
Derivative receivables balance	59,677	78,975
Trading assets	343,778	398,864
Available-for-sale securities	241,754	298,752
Loans	2,861	2,611
Mortgage servicing rights	6,608	7,436
Total assets measured at fair value on a recurring basis	624,984	747,731
Deposits	12,516	8,807
Federal funds purchased and securities loaned or sold under repurchase agreements	3,526	2,979
Other borrowed funds	9,911	14,739
Trading liabilities, Debt and equity instruments	74,107	81,699
Derivative netting adjustments	(890,122)	(1,239,657)
Derivative payables, net	52,790	71,116
Trading liabilities	126,897	152,815
Accounts payable and other liabilities	4,401	4,155
Beneficial interests issued by consolidated VIEs	787	2,162
Long-term debt	33,065	30,226
Total liabilities measured at fair value on a recurring basis	191,103	215,883
Recurring | Private equity investments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	1,860	5,497
Recurring | All other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	4,587	4,994
Recurring | Other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	7,604	11,909
Recurring | Interest rate
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Amounts netted on the Consolidated balance sheets	(643,248)	(916,532)
Derivative receivables balance	26,363	33,725
Derivative netting adjustments	(624,945)	(900,634)
Derivative payables, net	10,221	17,745
Recurring | Credit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Amounts netted on the Consolidated balance sheets	(50,045)	(75,004)
Derivative receivables balance	1,423	1,838
Derivative netting adjustments	(48,988)	(74,302)
Derivative payables, net	1,541	1,593
Recurring | Foreign exchange
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Amounts netted on the Consolidated balance sheets	(162,698)	(193,934)
Derivative receivables balance	17,177	21,253
Derivative netting adjustments	(171,131)	(201,644)
Derivative payables, net	19,769	22,970
Recurring | Equity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Amounts netted on the Consolidated balance sheets	(30,330)	(34,312)
Derivative receivables balance	5,529	8,177
Derivative netting adjustments	(29,480)	(34,522)
Derivative payables, net	9,183	11,740
Recurring | Commodity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Amounts netted on the Consolidated balance sheets	(15,880)	(29,671)
Derivative receivables balance	9,185	13,982
Derivative netting adjustments	(15,578)	(28,555)
Derivative payables, net	12,076	17,068
Recurring | Total debt instruments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	172,618	199,650
Recurring | Total mortgage-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	35,224	36,117
Available-for-sale securities	105,582	137,322
Recurring | Mortgage-backed securities, U.S. government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	32,536	32,840
Available-for-sale securities	55,066	65,319
Recurring | Mortgage-backed securities, Residential - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,493	2,044
Available-for-sale securities	27,619	50,895
Recurring | Mortgage-backed securities, Commercial - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,195	1,233
Available-for-sale securities	22,897	21,108
Recurring | U.S. Treasury and government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	19,021	26,276
Available-for-sale securities	11,036	13,645
Recurring | Obligations of U.S. states and municipalities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	7,637	10,571
Available-for-sale securities	33,550	30,068
Recurring | Certificates of deposit, bankers’ acceptances and commercial paper
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,042	1,429
Recurring | Certificates of deposit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	283	1,103
Recurring | Non-U.S. government debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	53,112	53,450
Available-for-sale securities	36,676	52,743
Recurring | Corporate debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	23,543	31,088
Available-for-sale securities	12,436	18,532
Recurring | Loans
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	28,815	36,367
Recurring | Asset-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	4,224	4,352
Recurring | Asset-backed securities, Collateralized loan obligations
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	31,007	30,194
Recurring | Asset-backed securities, other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	9,097	12,615
Recurring | Equity securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	94,930	105,945
Available-for-sale securities	2,087	2,530
Recurring | Physical commodities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	4,657	4,482
Recurring | Other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	11,896	9,812
Recurring | US government-sponsored and enterprises obligations
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	67,000	84,100
Recurring | Level 1
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Federal funds sold and securities purchased under resale agreements	0	0
Securities borrowed	0	0
Trading assets	137,668	151,313
Gross derivative receivables	1,196	1,478
Trading assets	138,864	152,791
Available-for-sale securities	36,284	40,195
Loans	0	0
Mortgage servicing rights	0	0
Total assets measured at fair value on a recurring basis	179,065	197,652
Deposits	0	0
Federal funds purchased and securities loaned or sold under repurchase agreements	0	0
Other borrowed funds	0	0
Trading liabilities, Debt and equity instruments	53,845	62,914
Derivative payables, gross	937	1,386
Trading liabilities	54,782	64,300
Accounts payable and other liabilities	4,382	4,129
Beneficial interests issued by consolidated VIEs	0	0
Long-term debt	0	0
Total liabilities measured at fair value on a recurring basis	59,164	68,429
Recurring | Level 1 | Private equity investments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	102	648
Recurring | Level 1 | All other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	3,815	4,018
Recurring | Level 1 | Other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	3,917	4,666
Recurring | Level 1 | Interest rate
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	354	473
Derivative payables, gross	216	499
Recurring | Level 1 | Credit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	0	0
Derivative payables, gross	0	0
Recurring | Level 1 | Foreign exchange
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	734	758
Derivative payables, gross	669	746
Recurring | Level 1 | Equity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	0	0
Derivative payables, gross	0	0
Recurring | Level 1 | Commodity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	108	247
Derivative payables, gross	52	141
Recurring | Level 1 | Total debt instruments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	40,016	43,684
Recurring | Level 1 | Total mortgage-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	6	14
Available-for-sale securities	0	0
Recurring | Level 1 | Mortgage-backed securities, U.S. government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	6	14
Available-for-sale securities	0	0
Recurring | Level 1 | Mortgage-backed securities, Residential - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	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 [Abstract]
Trading assets	0	0
Available-for-sale securities	0	0
Recurring | Level 1 | U.S. Treasury and government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	12,036	17,816
Available-for-sale securities	10,998	13,591
Recurring | Level 1 | Obligations of U.S. states and municipalities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	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 [Abstract]
Trading assets	0	0
Recurring | Level 1 | Certificates of deposit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	0	0
Recurring | Level 1 | Non-U.S. government debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	27,974	25,854
Available-for-sale securities	23,199	24,074
Recurring | Level 1 | Corporate debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Available-for-sale securities	0	0
Recurring | Level 1 | Loans
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Recurring | Level 1 | Asset-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Recurring | Level 1 | Asset-backed securities, Collateralized loan obligations
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	0	0
Recurring | Level 1 | Asset-backed securities, other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	0	0
Recurring | Level 1 | Equity securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	94,059	104,890
Available-for-sale securities	2,087	2,530
Recurring | Level 1 | Physical commodities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	3,593	2,739
Recurring | Level 1 | Other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	0
Recurring | Level 2
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Federal funds sold and securities purchased under resale agreements	23,141	28,585
Securities borrowed	395	992
Trading assets	134,503	146,087
Gross derivative receivables	952,736	1,314,385
Trading assets	1,087,239	1,460,472
Available-for-sale securities	204,646	257,520
Loans	1,343	70
Mortgage servicing rights	0	0
Total assets measured at fair value on a recurring basis	1,316,893	1,750,280
Deposits	9,566	5,948
Federal funds purchased and securities loaned or sold under repurchase agreements	3,526	2,979
Other borrowed funds	9,272	13,286
Trading liabilities, Debt and equity instruments	20,199	18,713
Derivative payables, gross	932,280	1,294,761
Trading liabilities	952,479	1,313,474
Accounts payable and other liabilities	0	0
Beneficial interests issued by consolidated VIEs	238	1,016
Long-term debt	21,452	18,349
Total liabilities measured at fair value on a recurring basis	996,533	1,355,052
Recurring | Level 2 | Private equity investments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	101	2,624
Recurring | Level 2 | All other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	28	17
Recurring | Level 2 | Other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	129	2,641
Recurring | Level 2 | Interest rate
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	666,491	945,635
Derivative payables, gross	633,060	914,357
Recurring | Level 2 | Credit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	48,850	73,853
Derivative payables, gross	48,460	73,095
Recurring | Level 2 | Foreign exchange
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	177,525	212,153
Derivative payables, gross	187,890	221,066
Recurring | Level 2 | Equity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	35,150	39,937
Derivative payables, gross	36,440	41,925
Recurring | Level 2 | Commodity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	24,720	42,807
Derivative payables, gross	26,430	44,318
Recurring | Level 2 | Total debt instruments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	121,681	134,960
Recurring | Level 2 | Total mortgage-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	34,194	34,212
Available-for-sale securities	105,581	137,193
Recurring | Level 2 | Mortgage-backed securities, U.S. government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	31,815	31,904
Available-for-sale securities	55,066	65,319
Recurring | Level 2 | Mortgage-backed securities, Residential - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,299	1,381
Available-for-sale securities	27,618	50,865
Recurring | Level 2 | Mortgage-backed securities, Commercial - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,080	927
Available-for-sale securities	22,897	21,009
Recurring | Level 2 | U.S. Treasury and government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	6,985	8,460
Available-for-sale securities	38	54
Recurring | Level 2 | Obligations of U.S. states and municipalities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	6,986	9,298
Available-for-sale securities	33,550	30,068
Recurring | Level 2 | Certificates of deposit, bankers’ acceptances and commercial paper
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,042	1,429
Recurring | Level 2 | Certificates of deposit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	283	1,103
Recurring | Level 2 | Non-U.S. government debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	25,064	27,294
Available-for-sale securities	13,477	28,669
Recurring | Level 2 | Corporate debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	22,807	28,099
Available-for-sale securities	12,436	18,532
Recurring | Level 2 | Loans
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	22,211	23,080
Recurring | Level 2 | Asset-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	2,392	3,088
Recurring | Level 2 | Asset-backed securities, Collateralized loan obligations
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	30,248	29,402
Recurring | Level 2 | Asset-backed securities, other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	9,033	12,499
Recurring | Level 2 | Equity securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	606	624
Available-for-sale securities	0	0
Recurring | Level 2 | Physical commodities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,064	1,741
Recurring | Level 2 | Other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	11,152	8,762
Recurring | Level 3
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Federal funds sold and securities purchased under resale agreements	0	0
Securities borrowed	0	0
Trading assets	11,930	22,489
Gross derivative receivables	7,946	12,565
Trading assets	19,876	35,054
Available-for-sale securities	824	1,037
Loans	1,518	2,541
Mortgage servicing rights	6,608	7,436
Total assets measured at fair value on a recurring basis	31,227	49,252
Deposits	2,950	2,859
Federal funds purchased and securities loaned or sold under repurchase agreements	0	0
Other borrowed funds	639	1,453
Trading liabilities, Debt and equity instruments	63	72
Derivative payables, gross	9,695	14,626
Trading liabilities	9,758	14,698
Accounts payable and other liabilities	19	26
Beneficial interests issued by consolidated VIEs	549	1,146
Long-term debt	11,613	11,877
Total liabilities measured at fair value on a recurring basis	25,528	32,059
Recurring | Level 3 | Private equity investments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	1,657	2,225
Recurring | Level 3 | All other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	744	959
Recurring | Level 3 | Other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	2,401	3,184
Recurring | Level 3 | Interest rate
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	2,766	4,149
Derivative payables, gross	1,890	3,523
Recurring | Level 3 | Credit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	2,618	2,989
Derivative payables, gross	2,069	2,800
Recurring | Level 3 | Foreign exchange
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	1,616	2,276
Derivative payables, gross	2,341	2,802
Recurring | Level 3 | Equity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	709	2,552
Derivative payables, gross	2,223	4,337
Recurring | Level 3 | Commodity
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Gross derivative receivables	237	599
Derivative payables, gross	1,172	1,164
Recurring | Level 3 | Total debt instruments
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	10,921	21,006
Recurring | Level 3 | Total mortgage-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,024	1,891
Available-for-sale securities	1	129
Recurring | Level 3 | Mortgage-backed securities, U.S. government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	715	922
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 [Abstract]
Trading assets	194	663
Available-for-sale securities	1	30
Recurring | Level 3 | Mortgage-backed securities, Commercial - nonagency
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	115	306
Available-for-sale securities	0	99
Recurring | Level 3 | U.S. Treasury and government agencies
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	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 [Abstract]
Trading assets	651	1,273
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 [Abstract]
Trading assets	0	0
Recurring | Level 3 | Certificates of deposit
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	0	0
Recurring | Level 3 | Non-U.S. government debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	74	302
Available-for-sale securities	0	0
Recurring | Level 3 | Corporate debt securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	736	2,989
Available-for-sale securities	0	0
Recurring | Level 3 | Loans
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	6,604	13,287
Recurring | Level 3 | Asset-backed securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	1,832	1,264
Recurring | Level 3 | Asset-backed securities, Collateralized loan obligations
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	759	792
Recurring | Level 3 | Asset-backed securities, other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Available-for-sale securities	64	116
Recurring | Level 3 | Equity securities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	265	431
Available-for-sale securities	0	0
Recurring | Level 3 | Physical commodities
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	0	2
Recurring | Level 3 | Other
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Trading assets	744	1,050
Recurring, Excluding Amounts Measured at NAV | Other assets
Assets and liabilities measured at fair value on a recurring basis [Abstract]
Other	$ 6,447	$ 10,491