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FAIR VALUE MEASUREMENT - Items Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
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 $ (44,811) $ (56,390)
Trading account assets 243,925 241,215
Netting of cash collateral received (45,912) (43,227)
Investments 353,304 342,955
Loans 3,486 5,005
Mortgage servicing rights (MSRs) 1,564 1,781
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 (44,811) (56,390)
Netting of cash collateral paid (49,811) (42,609)
Assets transferred from Level 1 to Level 2 2,600 3,300
Assets transferred from Level 2 to Level 1 4,000 4,400
Liabilities transferred from Level 2 to Level 1 400 600
Liabilities transferred from Level 1 to Level 2 300 400
Investments measured at net asset value excluded from Level 3 408 895
Accounting Standards Update 2015-07    
Liabilities, Fair Value Disclosure [Abstract]    
Investments measured at net asset value excluded from Level 3 400 900
Recurring    
Assets, Fair Value Disclosure [Abstract]    
Federal funds sold and securities borrowed or purchased under agreements to resell 173,890 178,875
Federal funds sold and securities borrowed or purchased under agreements to resell, selected portfolios of securities purchased under agreements to resell, Netting (40,686) (40,911)
Federal funds sold and securities borrowed or purchased under agreements to resell, selected portfolios of securities purchased under agreements to resell 133,204 137,964
Investments 300,790 300,329
Loans 3,486 5,005
Mortgage servicing rights (MSRs) 1,564 1,781
Assets before netting 1,305,641 1,311,724
Total assets, Netting (606,943) (610,568)
Total assets 698,698 701,156
Liabilities, Fair Value Disclosure [Abstract]    
Interest-bearing deposits 1,212 1,590
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Gross 74,349 77,754
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Netting (40,686) (40,911)
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase 33,663 36,843
Securities sold, not yet purchased 80,790 57,827
Trading liabilities 82,618 59,920
Short-term borrowings 2,700 1,207
Long-term debt 26,254 25,293
Total liabilities, Gross 813,924 792,123
Total liabilities, Netting (609,550) (608,054)
Total liabilities 204,374 184,069
Recurring | Trading derivatives liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 609,507 611,054
Cash collateral received 15,731 13,628
Total trading derivatives and cash collateral, liability 625,238 624,682
Netting agreements (519,000) (524,481)
Netting of cash collateral paid (49,811) (42,609)
Netting, Liabilities, total of netting agreements and cash collateral received (568,811) (567,090)
Total derivative liabilities 56,427 57,592
Cash collateral received, gross 61,643 56,855
Recurring | Trading derivatives liabilities | Interest rate contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 354,761 395,904
Recurring | Trading derivatives liabilities | Foreign exchange contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 187,761 133,913
Recurring | Trading derivatives liabilities | Equity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 26,516 26,516
Recurring | Trading derivatives liabilities | Commodity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 15,032 20,553
Recurring | Trading derivatives liabilities | Credit derivatives    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 25,437 34,168
Recurring | Non-trading derivatives and other financial liabilities    
Assets, Fair Value Disclosure [Abstract]    
Netting of cash collateral received   (1,949)
Cash collateral paid, gross 61 61
Liabilities, Fair Value Disclosure [Abstract]    
Cash collateral received 1 37
Netting of cash collateral paid (53) (53)
Netting, Liabilities, total of netting agreements and cash collateral received (53) (53)
Other liabilities, gross 1,552 1,640
Non-trading derivatives and other financial liabilities measured on a recurring basis, gross 1,553 1,677
Total other assets and cash collateral, gross 1,500 1,624
Cash collateral received, gross 1,346 1,986
Recurring | Trading account liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading liabilities 1,828 2,093
Recurring | Mortgage-backed securities - U.S. agency-sponsored    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 22,894 24,767
Investments 38,405 39,714
Recurring | Mortgage-backed securities - Residential    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 690 2,385
Investments 3,910 5,986
Recurring | Mortgage-backed securities - Commercial    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 1,206 2,855
Investments 358 571
Recurring | Mortgage-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 24,790 30,007
Investments 42,673 46,271
Recurring | U.S. Treasury and federal agency securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 21,180 17,796
Investments 123,671 122,915
Recurring | State and municipal securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 4,076 2,696
Investments 10,120 11,459
Recurring | Foreign government    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 49,696 56,467
Investments 98,148 88,674
Recurring | Corporate    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 14,947 14,579
Investments 17,124 19,330
Recurring | Equity securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 50,443 47,754
Investments 391 625
Recurring | Asset-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 2,760 3,956
Investments 6,794 9,174
Recurring | Other debt securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 12,280 11,776
Investments 503 688
Recurring | Non-marketable equity securities    
Assets, Fair Value Disclosure [Abstract]    
Investments 1,366 1,193
Recurring | Trading securities (excluding trading account derivatives)    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 180,172 185,031
Recurring | Trading account assets    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 617,477 618,981
Gross cash collateral paid 11,188 4,911
Trading derivative, asset, gross net cash collateral paid 628,665 623,892
Less: Netting agreements to assets (519,000) (524,481)
Netting of cash collateral received (45,912) (43,227)
Netting, Assets, total of netting agreements and cash collateral received (564,912) (567,708)
Trading derivatives 63,753 56,184
Cash collateral paid, gross 60,999 47,520
Recurring | Trading account assets | Interest rate contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 369,325 414,894
Recurring | Trading account assets | Foreign exchange contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 185,662 129,317
Recurring | Trading account assets | Equity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 24,110 21,885
Recurring | Trading account assets | Commodity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 13,765 18,010
Recurring | Trading account assets | Credit derivatives    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 24,615 34,875
Recurring | Non-trading derivatives and other financial assets    
Assets, Fair Value Disclosure [Abstract]    
Netting of cash collateral received (1,345) (1,949)
Netting, Assets, total of netting agreements and cash collateral received (1,345) (1,949)
Other assets, gross 17,066 16,803
Cash collateral paid, gross 8 8
Total other assets and cash collateral, gross 17,074 16,811
Other assets 15,729 14,862
Recurring | Level 1    
Assets, Fair Value Disclosure [Abstract]    
Federal funds sold and securities borrowed or purchased under agreements to resell 0 0
Investments 170,495 157,644
Loans 0 0
Mortgage servicing rights (MSRs) 0 0
Assets before netting $ 282,885 $ 260,938
Total as a percentage of gross assets 21.90% 20.00%
Liabilities, Fair Value Disclosure [Abstract]    
Interest-bearing deposits $ 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
Securities sold, not yet purchased 73,782 48,452
Trading liabilities 73,782 48,452
Short-term borrowings 0 0
Long-term debt 0 0
Total liabilities, Gross $ 76,343 $ 50,970
Total as a percentage of gross liabilities 9.60% 6.50%
Recurring | Level 1 | Trading derivatives liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability $ 2,561 $ 2,518
Recurring | Level 1 | Trading derivatives liabilities | Interest rate contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 107 5
Recurring | Level 1 | Trading derivatives liabilities | Foreign exchange contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 13 6
Recurring | Level 1 | Trading derivatives liabilities | Equity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 2,245 2,244
Recurring | Level 1 | Trading derivatives liabilities | Commodity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 196 263
Recurring | Level 1 | Trading derivatives liabilities | Credit derivatives    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 0 0
Recurring | Level 1 | Non-trading derivatives and other financial liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Other liabilities, gross 0 0
Recurring | Level 1 | Trading account liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading liabilities 0 0
Recurring | Level 1 | Mortgage-backed securities - U.S. agency-sponsored    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Investments 0 0
Recurring | Level 1 | Mortgage-backed securities - Residential    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Investments 0 0
Recurring | Level 1 | Mortgage-backed securities - Commercial    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Investments 0 0
Recurring | Level 1 | Mortgage-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Investments 0 0
Recurring | Level 1 | U.S. Treasury and federal agency securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 17,756 14,208
Investments 112,916 111,536
Recurring | Level 1 | State and municipal securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Investments 0 0
Recurring | Level 1 | Foreign government    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 36,852 35,715
Investments 54,028 42,073
Recurring | Level 1 | Corporate    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 424 302
Investments 3,215 3,605
Recurring | Level 1 | Equity securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 45,331 41,688
Investments 336 430
Recurring | Level 1 | Asset-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 0 0
Investments 0 0
Recurring | Level 1 | Other debt securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 2 0
Investments 0 0
Recurring | Level 1 | Non-marketable equity securities    
Assets, Fair Value Disclosure [Abstract]    
Investments 0 0
Recurring | Level 1 | Trading securities (excluding trading account derivatives)    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 100,365 91,913
Recurring | Level 1 | Trading account assets    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 2,725 2,640
Recurring | Level 1 | Trading account assets | Interest rate contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 105 9
Recurring | Level 1 | Trading account assets | Foreign exchange contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 53 5
Recurring | Level 1 | Trading account assets | Equity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 2,306 2,422
Recurring | Level 1 | Trading account assets | Commodity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 261 204
Recurring | Level 1 | Trading account assets | Credit derivatives    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 0 0
Recurring | Level 1 | Non-trading derivatives and other financial assets    
Assets, Fair Value Disclosure [Abstract]    
Other assets, gross 9,300 8,741
Recurring | Level 2    
Assets, Fair Value Disclosure [Abstract]    
Federal funds sold and securities borrowed or purchased under agreements to resell 172,394 177,538
Investments 126,434 137,626
Loans 2,918 2,839
Mortgage servicing rights (MSRs) 0 0
Assets before netting $ 992,034 $ 1,013,230
Total as a percentage of gross assets 76.60% 77.50%
Liabilities, Fair Value Disclosure [Abstract]    
Interest-bearing deposits $ 919 $ 1,156
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Gross 73,500 76,507
Securities sold, not yet purchased 5,831 9,176
Trading liabilities 7,658 11,269
Short-term borrowings 2,658 1,198
Long-term debt 16,510 17,750
Total liabilities, Gross $ 699,230 $ 706,117
Total as a percentage of gross liabilities 87.60% 90.70%
Recurring | Level 2 | Trading derivatives liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability $ 596,441 $ 596,611
Recurring | Level 2 | Trading derivatives liabilities | Interest rate contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 351,766 393,321
Recurring | Level 2 | Trading derivatives liabilities | Foreign exchange contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 187,328 133,404
Recurring | Level 2 | Trading derivatives liabilities | Equity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 22,119 21,875
Recurring | Level 2 | Trading derivatives liabilities | Commodity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 12,386 17,329
Recurring | Level 2 | Trading derivatives liabilities | Credit derivatives    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 22,842 30,682
Recurring | Level 2 | Non-trading derivatives and other financial liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Other liabilities, gross 1,544 1,626
Recurring | Level 2 | Trading account liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading liabilities 1,827 2,093
Recurring | Level 2 | Mortgage-backed securities - U.S. agency-sponsored    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 22,718 24,023
Investments 38,304 39,575
Recurring | Level 2 | Mortgage-backed securities - Residential    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 291 1,059
Investments 3,860 5,982
Recurring | Level 2 | Mortgage-backed securities - Commercial    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 1,000 2,338
Investments 358 569
Recurring | Level 2 | Mortgage-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 24,009 27,420
Investments 42,522 46,126
Recurring | Level 2 | U.S. Treasury and federal agency securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 3,423 3,587
Investments 10,753 11,375
Recurring | Level 2 | State and municipal securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 3,780 2,345
Investments 8,909 9,267
Recurring | Level 2 | Foreign government    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 12,804 20,555
Investments 43,934 46,341
Recurring | Level 2 | Corporate    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 14,199 13,901
Investments 13,598 15,122
Recurring | Level 2 | Equity securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 4,985 2,382
Investments 46 71
Recurring | Level 2 | Asset-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 892 1,217
Investments 6,134 8,578
Recurring | Level 2 | Other debt securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 9,464 9,293
Investments 503 688
Recurring | Level 2 | Non-marketable equity securities    
Assets, Fair Value Disclosure [Abstract]    
Investments 35 58
Recurring | Level 2 | Trading securities (excluding trading account derivatives)    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 73,556 80,700
Recurring | Level 2 | Trading account assets    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 609,000 606,645
Recurring | Level 2 | Trading account assets | Interest rate contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 366,995 412,802
Recurring | Level 2 | Trading account assets | Foreign exchange contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 184,776 128,189
Recurring | Level 2 | Trading account assets | Equity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 21,209 17,866
Recurring | Level 2 | Trading account assets | Commodity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 12,999 16,706
Recurring | Level 2 | Trading account assets | Credit derivatives    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 23,021 31,082
Recurring | Level 2 | Non-trading derivatives and other financial assets    
Assets, Fair Value Disclosure [Abstract]    
Other assets, gross 7,732 7,882
Recurring | Level 3    
Assets, Fair Value Disclosure [Abstract]    
Federal funds sold and securities borrowed or purchased under agreements to resell 1,496 1,337
Investments 3,861 5,059
Loans 568 2,166
Mortgage servicing rights (MSRs) 1,564 1,781
Assets before netting $ 19,526 $ 32,637
Total as a percentage of gross assets 1.50% 2.50%
Liabilities, Fair Value Disclosure [Abstract]    
Interest-bearing deposits $ 293 $ 434
Federal funds purchased and securities loaned or sold under agreements to repurchase, selected portfolios of securities sold under agreements to repurchase, Gross 849 1,247
Securities sold, not yet purchased 1,177 199
Trading liabilities 1,178 199
Short-term borrowings 42 9
Long-term debt 9,744 7,543
Total liabilities, Gross $ 22,619 $ 21,371
Total as a percentage of gross liabilities 2.80% 2.70%
Recurring | Level 3 | Trading derivatives liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability $ 10,505 $ 11,925
Recurring | Level 3 | Trading derivatives liabilities | Interest rate contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 2,888 2,578
Recurring | Level 3 | Trading derivatives liabilities | Foreign exchange contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 420 503
Recurring | Level 3 | Trading derivatives liabilities | Equity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 2,152 2,397
Recurring | Level 3 | Trading derivatives liabilities | Commodity contracts    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 2,450 2,961
Recurring | Level 3 | Trading derivatives liabilities | Credit derivatives    
Liabilities, Fair Value Disclosure [Abstract]    
Trading derivatives, liability 2,595 3,486
Recurring | Level 3 | Non-trading derivatives and other financial liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Other liabilities, gross 8 14
Recurring | Level 3 | Trading account liabilities    
Liabilities, Fair Value Disclosure [Abstract]    
Trading liabilities 1 0
Recurring | Level 3 | Mortgage-backed securities - U.S. agency-sponsored    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 176 744
Investments 101 139
Recurring | Level 3 | Mortgage-backed securities - Residential    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 399 1,326
Investments 50 4
Recurring | Level 3 | Mortgage-backed securities - Commercial    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 206 517
Investments 0 2
Recurring | Level 3 | Mortgage-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 781 2,587
Investments 151 145
Recurring | Level 3 | U.S. Treasury and federal agency securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 1 1
Investments 2 4
Recurring | Level 3 | State and municipal securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 296 351
Investments 1,211 2,192
Recurring | Level 3 | Foreign government    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 40 197
Investments 186 260
Recurring | Level 3 | Corporate    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 324 376
Investments 311 603
Recurring | Level 3 | Equity securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 127 3,684
Investments 9 124
Recurring | Level 3 | Asset-backed securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 1,868 2,739
Investments 660 596
Recurring | Level 3 | Other debt securities    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 2,814 2,483
Investments 0 0
Recurring | Level 3 | Non-marketable equity securities    
Assets, Fair Value Disclosure [Abstract]    
Investments 1,331 1,135
Recurring | Level 3 | Trading securities (excluding trading account derivatives)    
Assets, Fair Value Disclosure [Abstract]    
Trading account assets 6,251 12,418
Recurring | Level 3 | Trading account assets    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 5,752 9,696
Recurring | Level 3 | Trading account assets | Interest rate contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 2,225 2,083
Recurring | Level 3 | Trading account assets | Foreign exchange contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 833 1,123
Recurring | Level 3 | Trading account assets | Equity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 595 1,597
Recurring | Level 3 | Trading account assets | Commodity contracts    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 505 1,100
Recurring | Level 3 | Trading account assets | Credit derivatives    
Assets, Fair Value Disclosure [Abstract]    
Trading derivatives, asset, Gross 1,594 3,793
Recurring | Level 3 | Non-trading derivatives and other financial assets    
Assets, Fair Value Disclosure [Abstract]    
Other assets, gross $ 34 $ 180