FAIR VALUE MEASUREMENT - Items Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Assets, Fair Value Disclosure [Abstract]
Federal funds sold and securities borrowed or purchased under agreements to resell, selected portfolios of securities purchased under agreements to resell, Netting	$ (47,890)	$ (47,890)	$ (56,339)
Trading account assets	279,197	279,197	296,786
Netting of cash collateral received	(37,817)	(37,817)	(47,625)
Investments	332,121	332,121	333,443
Loans	6,538	6,538	5,901
Mortgage servicing rights (MSRs)	1,924	1,924	1,845
Liabilities, Fair Value Disclosure [Abstract]
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Netting	(47,890)	(47,890)	(56,339)
Netting of cash collateral paid	(41,872)	(41,872)	(47,769)
Assets transferred from Level 1 to Level 2	1,000	1,600	4,100
Assets transferred from Level 2 to Level 1	1,200	3,100	4,200
Liabilities transferred from Level 2 to Level 1		300
Liabilities transferred from Level 1 to Level 2			1,400
Investments measured at net asset value excluded from Level 3	997	997	1,065
Accounting Standards Update 2015-07
Liabilities, Fair Value Disclosure [Abstract]
Investments measured at net asset value excluded from Level 3	1,000	1,000
Mortgage-backed securities - U.S. agency-sponsored
Assets, Fair Value Disclosure [Abstract]
Trading account assets	26,047	26,047	27,053
Mortgage-backed securities - Commercial
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,714	3,714	4,343
Mortgage-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	33,576	33,576	36,234
U.S. Treasury and federal agency securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	21,992	21,992	20,474
State and municipal securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,332	3,332	3,402
Foreign government
Assets, Fair Value Disclosure [Abstract]
Trading account assets	58,321	58,321	64,937
Corporate
Assets, Fair Value Disclosure [Abstract]
Trading account assets	21,539	21,539	27,797
Equity securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	58,047	58,047	57,846
Asset-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	5,731	5,731	4,546
Other debt securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	15,816	15,816	13,593
Recurring
Assets, Fair Value Disclosure [Abstract]
Federal funds sold and securities borrowed or purchased under agreements to resell	174,623	174,623	191,320
Federal funds sold and securities borrowed or purchased under agreements to resell, selected portfolios of securities purchased under agreements to resell, Netting	(42,556)	(42,556)	(47,129)
Federal funds sold and securities borrowed or purchased under agreements to resell, selected portfolios of securities purchased under agreements to resell	132,067	132,067	144,191
Investments	295,417	295,417	301,836
Loans	6,538	6,538	5,901
Mortgage servicing rights (MSRs)	1,924	1,924	1,845
Assets before netting	1,364,184	1,364,184	1,632,044
Total assets, Netting	(640,769)	(640,769)	(873,723)
Total assets	723,415	723,415	758,321
Liabilities, Fair Value Disclosure [Abstract]
Interest-bearing deposits	1,389	1,389	1,684
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Gross	81,291	81,291	83,854
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Netting	(42,556)	(42,556)	(47,129)
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase	38,735	38,735	36,725
Securities sold, not yet purchased	72,979	72,979	70,944
Short-term borrowings	870	870	1,496
Long-term debt, at fair value	27,214	27,214	26,180
Total liabilities, Gross	848,666	848,666	1,078,988
Total liabilities, Netting	(642,918)	(642,918)	(872,091)
Total liabilities	205,748	205,748	206,897
Recurring \| Trading derivatives liabilities
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	650,717	650,717	883,193
Cash collateral received	12,911	12,911	9,846
Total trading derivatives and cash collateral, liability	663,628	663,628	893,039
Netting agreements	(558,440)	(558,440)	(777,178)
Netting of cash collateral paid	(41,872)	(41,872)	(47,769)
Netting, Liabilities, total of netting agreements and cash collateral received	(600,312)	(600,312)	(824,947)
Total derivative liabilities	63,316	63,316	68,092
Cash collateral received, gross	50,728	50,728	57,471
Recurring \| Trading derivatives liabilities \| Interest rate contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	433,707	433,707	622,282
Recurring \| Trading derivatives liabilities \| Foreign exchange contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	126,592	126,592	158,826
Recurring \| Trading derivatives liabilities \| Equity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	31,394	31,394	32,469
Recurring \| Trading derivatives liabilities \| Commodity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	19,818	19,818	26,186
Recurring \| Trading derivatives liabilities \| Credit derivatives
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	39,206	39,206	43,430
Recurring \| Non-trading derivatives and other financial liabilities
Assets, Fair Value Disclosure [Abstract]
Netting of cash collateral received			(1,791)
Cash collateral paid, gross			138
Liabilities, Fair Value Disclosure [Abstract]
Cash collateral received	4	4	7
Netting of cash collateral paid	(50)	(50)	(15)
Netting, Liabilities, total of netting agreements and cash collateral received	(50)	(50)
Other liabilities, gross	1,291	1,291	1,784
Non-trading derivatives and other financial liabilities measured on a recurring basis, gross	1,295	1,295	1,791
Total other assets and cash collateral, gross	1,245	1,245	1,776
Cash collateral received, gross	1,960	1,960	1,798
Recurring \| Mortgage-backed securities - U.S. agency-sponsored
Assets, Fair Value Disclosure [Abstract]
Trading account assets	26,047	26,047	27,053
Investments	34,375	34,375	36,091
Recurring \| Mortgage-backed securities - Residential
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,815	3,815	4,838
Investments	7,107	7,107	8,363
Recurring \| Mortgage-backed securities - Commercial
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,714	3,714	4,343
Investments	513	513	554
Recurring \| Mortgage-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	33,576	33,576	36,234
Investments	41,995	41,995	45,008
Recurring \| U.S. Treasury and federal agency securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	21,992	21,992	20,474
Investments	124,670	124,670	123,690
Recurring \| State and municipal securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,332	3,332	3,402
Investments	11,713	11,713	12,699
Recurring \| Foreign government
Assets, Fair Value Disclosure [Abstract]
Trading account assets	58,321	58,321	64,937
Investments	87,596	87,596	90,697
Recurring \| Corporate
Assets, Fair Value Disclosure [Abstract]
Trading account assets	21,539	21,539	27,797
Investments	14,732	14,732	12,157
Recurring \| Equity securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	58,047	58,047	57,846
Investments	971	971	2,725
Recurring \| Asset-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	5,731	5,731	4,546
Investments	11,608	11,608	12,506
Recurring \| Other debt securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	15,816	15,816	13,593
Investments	841	841	661
Recurring \| Non-marketable equity securities
Assets, Fair Value Disclosure [Abstract]
Investments	1,291	1,291	1,693
Recurring \| Trading account assets
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	651,041	651,041	886,237
Gross cash collateral paid	6,059	6,059	6,523
Trading derivative, asset, gross net cash collateral paid	657,100	657,100	892,760
Less: Netting agreements to assets	(558,440)	(558,440)	(777,178)
Netting of cash collateral received	(37,817)	(37,817)	(47,625)
Netting, Assets, total of netting agreements and cash collateral received	(596,257)	(596,257)	(824,803)
Trading derivatives	60,843	60,843	67,957
Cash collateral paid, gross	47,931	47,931	54,292
Recurring \| Trading account assets \| Interest rate contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	449,703	449,703	638,453
Recurring \| Trading account assets \| Foreign exchange contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	121,967	121,967	155,994
Recurring \| Trading account assets \| Equity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	24,439	24,439	24,752
Recurring \| Trading account assets \| Commodity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	15,874	15,874	23,520
Recurring \| Trading account assets \| Credit derivatives
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	39,058	39,058	43,518
Recurring \| Non-trading derivatives and other financial assets
Assets, Fair Value Disclosure [Abstract]
Netting of cash collateral received	(1,956)	(1,956)	(1,791)
Netting, Assets, total of netting agreements and cash collateral received	(1,956)	(1,956)	(1,791)
Other assets, gross	10,228	10,228	9,430
Cash collateral paid, gross	0	0	123
Total other assets and cash collateral, gross	10,228	10,228	9,553
Other assets	8,272	8,272	7,762
Recurring \| Trading securities (excluding trading account derivatives)
Assets, Fair Value Disclosure [Abstract]
Trading account assets	218,354	218,354	228,829
Recurring \| Level 1
Assets, Fair Value Disclosure [Abstract]
Federal funds sold and securities borrowed or purchased under agreements to resell	0	0	0
Investments	155,452	155,452	151,499
Loans	0	0	0
Mortgage servicing rights (MSRs)	0	0	0
Assets before netting	$ 264,204	$ 264,204	$ 261,637
Total as a percentage of gross assets	19.40%	19.40%	16.10%
Liabilities, Fair Value Disclosure [Abstract]
Interest-bearing deposits	$ 0	$ 0	$ 0
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Gross	0	0	0
Securities sold, not yet purchased	57,012	57,012	59,463
Short-term borrowings	0	0	0
Long-term debt, at fair value	0	0	0
Total liabilities, Gross	$ 59,939	$ 59,939	$ 63,164
Total as a percentage of gross liabilities	7.20%	7.20%	5.90%
Recurring \| Level 1 \| Trading derivatives liabilities
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	$ 2,927	$ 2,927	$ 3,701
Recurring \| Level 1 \| Trading derivatives liabilities \| Interest rate contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	30	30	77
Recurring \| Level 1 \| Trading derivatives liabilities \| Foreign exchange contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	7	7	0
Recurring \| Level 1 \| Trading derivatives liabilities \| Equity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	2,629	2,629	2,955
Recurring \| Level 1 \| Trading derivatives liabilities \| Commodity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	261	261	669
Recurring \| Level 1 \| Trading derivatives liabilities \| Credit derivatives
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	0	0	0
Recurring \| Level 1 \| Non-trading derivatives and other financial liabilities
Liabilities, Fair Value Disclosure [Abstract]
Other liabilities, gross	0	0	0
Recurring \| Level 1 \| Mortgage-backed securities - U.S. agency-sponsored
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0	0
Investments	0	0	0
Recurring \| Level 1 \| Mortgage-backed securities - Residential
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0	0
Investments	0	0	0
Recurring \| Level 1 \| Mortgage-backed securities - Commercial
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0	0
Investments	0	0	0
Other assets, gross			0
Recurring \| Level 1 \| Mortgage-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0	0
Investments	0	0	0
Recurring \| Level 1 \| U.S. Treasury and federal agency securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	18,577	18,577	15,991
Investments	114,561	114,561	110,710
Recurring \| Level 1 \| State and municipal securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0	0
Investments	0	0	0
Recurring \| Level 1 \| Foreign government
Assets, Fair Value Disclosure [Abstract]
Trading account assets	34,201	34,201	37,995
Investments	37,888	37,888	37,280
Recurring \| Level 1 \| Corporate
Assets, Fair Value Disclosure [Abstract]
Trading account assets	517	517	1,337
Investments	2,592	2,592	1,739
Recurring \| Level 1 \| Equity securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	52,540	52,540	51,346
Investments	411	411	1,770
Recurring \| Level 1 \| Asset-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0	0
Investments	0	0	0
Recurring \| Level 1 \| Other debt securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0	0
Investments	0	0	0
Recurring \| Level 1 \| Non-marketable equity securities
Assets, Fair Value Disclosure [Abstract]
Investments	0	0	0
Recurring \| Level 1 \| Trading account assets
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	2,797	2,797	3,469
Recurring \| Level 1 \| Trading account assets \| Interest rate contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	45	45	74
Recurring \| Level 1 \| Trading account assets \| Foreign exchange contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	1	1	0
Recurring \| Level 1 \| Trading account assets \| Equity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	2,518	2,518	2,748
Recurring \| Level 1 \| Trading account assets \| Commodity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	233	233	647
Recurring \| Level 1 \| Trading account assets \| Credit derivatives
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	0	0	0
Recurring \| Level 1 \| Non-trading derivatives and other financial assets
Assets, Fair Value Disclosure [Abstract]
Other assets, gross	120	120	0
Recurring \| Level 1 \| Trading securities (excluding trading account derivatives)
Assets, Fair Value Disclosure [Abstract]
Trading account assets	105,835	105,835	106,669
Recurring \| Level 2
Assets, Fair Value Disclosure [Abstract]
Federal funds sold and securities borrowed or purchased under agreements to resell	173,553	173,553	187,922
Investments	134,286	134,286	144,064
Loans	2,698	2,698	2,793
Mortgage servicing rights (MSRs)	0	0	0
Assets before netting	$ 1,057,525	$ 1,057,525	$ 1,322,433
Total as a percentage of gross assets	77.90%	77.90%	81.40%
Liabilities, Fair Value Disclosure [Abstract]
Interest-bearing deposits	$ 1,042	$ 1,042	$ 1,198
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Gross	80,326	80,326	82,811
Securities sold, not yet purchased	15,710	15,710	11,057
Short-term borrowings	737	737	1,152
Long-term debt, at fair value	19,549	19,549	18,890
Total liabilities, Gross	$ 754,308	$ 754,308	$ 982,447
Total as a percentage of gross liabilities	90.20%	90.20%	91.90%
Recurring \| Level 2 \| Trading derivatives liabilities
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	$ 635,657	$ 635,657	$ 865,562
Recurring \| Level 2 \| Trading derivatives liabilities \| Interest rate contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	430,505	430,505	617,933
Recurring \| Level 2 \| Trading derivatives liabilities \| Foreign exchange contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	125,930	125,930	158,354
Recurring \| Level 2 \| Trading derivatives liabilities \| Equity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	26,295	26,295	26,616
Recurring \| Level 2 \| Trading derivatives liabilities \| Commodity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	17,085	17,085	22,872
Recurring \| Level 2 \| Trading derivatives liabilities \| Credit derivatives
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	35,842	35,842	39,787
Recurring \| Level 2 \| Non-trading derivatives and other financial liabilities
Liabilities, Fair Value Disclosure [Abstract]
Other liabilities, gross	1,287	1,287	1,777
Recurring \| Level 2 \| Mortgage-backed securities - U.S. agency-sponsored
Assets, Fair Value Disclosure [Abstract]
Trading account assets	25,436	25,436	25,968
Investments	34,279	34,279	36,053
Recurring \| Level 2 \| Mortgage-backed securities - Residential
Assets, Fair Value Disclosure [Abstract]
Trading account assets	1,609	1,609	2,158
Investments	7,097	7,097	8,355
Recurring \| Level 2 \| Mortgage-backed securities - Commercial
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,346	3,346	3,903
Investments	513	513	553
Recurring \| Level 2 \| Mortgage-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	30,391	30,391	32,029
Investments	41,889	41,889	44,961
Recurring \| Level 2 \| U.S. Treasury and federal agency securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,415	3,415	4,483
Investments	10,104	10,104	12,974
Recurring \| Level 2 \| State and municipal securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,083	3,083	3,161
Investments	9,560	9,560	10,519
Recurring \| Level 2 \| Foreign government
Assets, Fair Value Disclosure [Abstract]
Trading account assets	24,038	24,038	26,736
Investments	49,215	49,215	52,739
Recurring \| Level 2 \| Corporate
Assets, Fair Value Disclosure [Abstract]
Trading account assets	20,314	20,314	25,640
Investments	11,442	11,442	9,746
Recurring \| Level 2 \| Equity securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	2,766	2,766	4,281
Investments	77	77	274
Recurring \| Level 2 \| Asset-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	1,495	1,495	1,252
Investments	11,105	11,105	11,957
Recurring \| Level 2 \| Other debt securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	12,718	12,718	9,221
Investments	841	841	661
Recurring \| Level 2 \| Non-marketable equity securities
Assets, Fair Value Disclosure [Abstract]
Investments	53	53	233
Recurring \| Level 2 \| Trading account assets
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	638,799	638,799	871,499
Recurring \| Level 2 \| Trading account assets \| Interest rate contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	446,909	446,909	634,318
Recurring \| Level 2 \| Trading account assets \| Foreign exchange contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	120,920	120,920	154,744
Recurring \| Level 2 \| Trading account assets \| Equity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	19,806	19,806	19,969
Recurring \| Level 2 \| Trading account assets \| Commodity contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	14,896	14,896	21,850
Recurring \| Level 2 \| Trading account assets \| Credit derivatives
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	36,268	36,268	40,618
Recurring \| Level 2 \| Non-trading derivatives and other financial assets
Assets, Fair Value Disclosure [Abstract]
Other assets, gross	9,969	9,969	9,352
Recurring \| Level 2 \| Trading securities (excluding trading account derivatives)
Assets, Fair Value Disclosure [Abstract]
Trading account assets	98,220	98,220	106,803
Recurring \| Level 3
Assets, Fair Value Disclosure [Abstract]
Federal funds sold and securities borrowed or purchased under agreements to resell	1,070	1,070	3,398
Investments	5,679	5,679	6,273
Loans	3,840	3,840	3,108
Mortgage servicing rights (MSRs)	1,924	1,924	1,845
Assets before netting	$ 36,396	$ 36,396	$ 41,328
Total as a percentage of gross assets	2.70%	2.70%	2.50%
Liabilities, Fair Value Disclosure [Abstract]
Interest-bearing deposits	$ 347	$ 347	$ 486
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Gross	965	965	1,043
Securities sold, not yet purchased	257	257	424
Short-term borrowings	133	133	344
Long-term debt, at fair value	7,665	7,665	7,290
Total liabilities, Gross	$ 21,504	$ 21,504	$ 23,524
Total as a percentage of gross liabilities	2.60%	2.60%	2.20%
Recurring \| Level 3 \| Trading derivatives liabilities
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	$ 12,133	$ 12,133	$ 13,930
Recurring \| Level 3 \| Trading derivatives liabilities \| Interest rate contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	3,172	3,172	4,272
Recurring \| Level 3 \| Trading derivatives liabilities \| Foreign exchange contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	655	655	472
Recurring \| Level 3 \| Trading derivatives liabilities \| Equity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	2,470	2,470	2,898
Recurring \| Level 3 \| Trading derivatives liabilities \| Commodity contracts
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	2,472	2,472	2,645
Recurring \| Level 3 \| Trading derivatives liabilities \| Credit derivatives
Liabilities, Fair Value Disclosure [Abstract]
Trading derivatives, liability	3,364	3,364	3,643
Recurring \| Level 3 \| Non-trading derivatives and other financial liabilities
Liabilities, Fair Value Disclosure [Abstract]
Other liabilities, gross	4	4	7
Recurring \| Level 3 \| Mortgage-backed securities - U.S. agency-sponsored
Assets, Fair Value Disclosure [Abstract]
Trading account assets	611	611	1,085
Investments	96	96	38
Recurring \| Level 3 \| Mortgage-backed securities - Residential
Assets, Fair Value Disclosure [Abstract]
Trading account assets	2,206	2,206	2,680
Investments	10	10	8
Recurring \| Level 3 \| Mortgage-backed securities - Commercial
Assets, Fair Value Disclosure [Abstract]
Trading account assets	368	368	440
Investments	0	0	1
Recurring \| Level 3 \| Mortgage-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,185	3,185	4,205
Investments	106	106	47
Recurring \| Level 3 \| U.S. Treasury and federal agency securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	0	0	0
Investments	5	5	6
Recurring \| Level 3 \| State and municipal securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	249	249	241
Investments	2,153	2,153	2,180
Recurring \| Level 3 \| Foreign government
Assets, Fair Value Disclosure [Abstract]
Trading account assets	82	82	206
Investments	493	493	678
Recurring \| Level 3 \| Corporate
Assets, Fair Value Disclosure [Abstract]
Trading account assets	708	708	820
Investments	698	698	672
Recurring \| Level 3 \| Equity securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	2,741	2,741	2,219
Investments	483	483	681
Recurring \| Level 3 \| Asset-backed securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	4,236	4,236	3,294
Investments	503	503	549
Recurring \| Level 3 \| Other debt securities
Assets, Fair Value Disclosure [Abstract]
Trading account assets	3,098	3,098	4,372
Investments	0	0	0
Recurring \| Level 3 \| Non-marketable equity securities
Assets, Fair Value Disclosure [Abstract]
Investments	1,238	1,238	1,460
Recurring \| Level 3 \| Trading account assets
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	9,445	9,445	11,269
Recurring \| Level 3 \| Trading account assets \| Interest rate contracts
Assets, Fair Value Disclosure [Abstract]
Trading derivatives, asset, Gross	2,749	2,749	4,061
Recurring \| Level 3 \| Trading account assets \| Foreign exchange contracts
Assets, Fair Value Disclosure [Abstract]

This element represents the aggregate of the assets reported on the balance sheet at period end, presented on a gross basis even when derivatives and other financial assets are subject to master netting arrangements and qualify for net presentation in the statement of financial position.

No definition available.