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Derivatives (Tables) | 6 Months Ended
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Jun. 30, 2019
Derivative Instrument Detail [Abstract] |
Derivative Contracts [Table Text Block] | The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at June 30, 2019 (in thousands):
|  | Assets
|  | Notional 1 |  | Gross Fair Value |  | Netting Adjustments |  | Net Fair Value Before Cash Collateral |  | Cash Collateral |  | Fair Value Net of Cash Collateral
Customer risk management programs: |  |  |  |  |  |  |  |  |  |  |  |
Interest rate contracts |  |  |  |  |  |  |  |  |  |  |  |
To-be-announced residential mortgage-backed securities |  | $ | 1,303,659 |  |  | $ | 11,707 |  |  | $ | (3,352 | ) |  | $ | 8,355 |  |  | $ | — |  |  | $ | 8,355 |
Interest rate swaps |  | 2,254,122 |  |  | 51,177 |  |  | (2,168 | ) |  | 49,009 |  |  | (42 | ) |  | 48,967 |
Energy contracts |  | 1,849,474 |  |  | 153,514 |  |  | (76,562 | ) |  | 76,952 |  |  | (33,847 | ) |  | 43,105 |
Agricultural contracts |  | 16,662 |  |  | 788 |  |  | (103 | ) |  | 685 |  |  | — |  |  | 685 |
Foreign exchange contracts |  | 252,272 |  |  | 250,527 |  |  | — |  |  | 250,527 |  |  | (384 | ) |  | 250,143 |
Equity option contracts |  | 86,124 |  |  | 3,034 |  |  | — |  |  | 3,034 |  |  | — |  |  | 3,034 |
Total customer risk management programs |  | 5,762,313 |  |  | 470,747 |  |  | (82,185 | ) |  | 388,562 |  |  | (34,273 | ) |  | 354,289 |
Internal risk management programs |  | 52,977,229 |  |  | 352,808 |  |  | (291,876 | ) |  | 60,932 |  |  | — |  |  | 60,932 |
Total derivative contracts |  | $ | 58,739,542 |  |  | $ | 823,555 |  |  | $ | (374,061 | ) |  | $ | 449,494 |  |  | $ | (34,273 | ) |  | $ | 415,221 |
|  | Liabilities
|  | Notional¹ |  | Gross Fair Value |  | Netting Adjustments |  | Net Fair Value Before Cash Collateral |  | Cash Collateral |  | Fair Value Net of Cash Collateral
Customer risk management programs: |  |  |  |  |  |  |  |  |  |  |  |
Interest rate contracts |  |  |  |  |  |  |  |  |  |  |  |
To-be-announced residential mortgage-backed securities |  | $ | 1,298,129 |  |  | $ | 11,596 |  |  | $ | (3,352 | ) |  | $ | 8,244 |  |  | $ | (8,232 | ) |  | $ | 12 |
Interest rate swaps |  | 2,254,122 |  |  | 51,271 |  |  | (2,168 | ) |  | 49,103 |  |  | (43,288 | ) |  | 5,815 |
Energy contracts |  | 1,794,912 |  |  | 145,442 |  |  | (76,562 | ) |  | 68,880 |  |  | (1,836 | ) |  | 67,044 |
Agricultural contracts |  | 16,678 |  |  | 776 |  |  | (103 | ) |  | 673 |  |  | (629 | ) |  | 44 |
Foreign exchange contracts |  | 240,406 |  |  | 238,625 |  |  | — |  |  | 238,625 |  |  | (309 | ) |  | 238,316 |
Equity option contracts |  | 86,124 |  |  | 3,034 |  |  | — |  |  | 3,034 |  |  | — |  |  | 3,034 |
Total customer risk management programs |  | 5,690,371 |  |  | 450,744 |  |  | (82,185 | ) |  | 368,559 |  |  | (54,294 | ) |  | 314,265 |
Internal risk management programs |  | 54,628,959 |  |  | 359,065 |  |  | (291,876 | ) |  | 67,189 |  |  | — |  |  | 67,189 |
Total derivative contracts |  | $ | 60,319,330 |  |  | $ | 809,809 |  |  | $ | (374,061 | ) |  | $ | 435,748 |  |  | $ | (54,294 | ) |  | $ | 381,454 |
1 | Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.
The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at December 31, 2018 (in thousands):
|  | Assets
|  | Notional 1 |  | Gross Fair Value |  | Netting Adjustments |  | Net Fair Value Before Cash Collateral |  | Cash Collateral |  | Fair Value Net of Cash Collateral
Customer risk management programs: |  |  |  |  |  |  |  |  |  |  |  |
Interest rate contracts |  |  |  |  |  |  |  |  |  |  |  |
To-be-announced residential mortgage-backed securities |  | $ | 10,671,151 |  |  | $ | 92,231 |  |  | $ | (26,787 | ) |  | $ | 65,444 |  |  | $ | — |  |  | $ | 65,444 |
Interest rate swaps |  | 1,924,131 |  |  | 36,112 |  |  | (6,688 | ) |  | 29,424 |  |  | (7,934 | ) |  | 21,490 |
Energy contracts |  | 1,472,209 |  |  | 206,418 |  |  | (60,983 | ) |  | 145,435 |  |  | (106,752 | ) |  | 38,683 |
Agricultural contracts |  | 21,210 |  |  | 842 |  |  | (201 | ) |  | 641 |  |  | — |  |  | 641 |
Foreign exchange contracts |  | 184,990 |  |  | 183,759 |  |  | — |  |  | 183,759 |  |  | — |  |  | 183,759 |
Equity option contracts |  | 89,085 |  |  | 2,021 |  |  | — |  |  | 2,021 |  |  | (648 | ) |  | 1,373 |
Total customer risk management programs |  | 14,362,776 |  |  | 521,383 |  |  | (94,659 | ) |  | 426,724 |  |  | (115,334 | ) |  | 311,390 |
Internal risk management programs |  | 15,909,988 |  |  | 50,410 |  |  | (40,871 | ) |  | 9,539 |  |  | — |  |  | 9,539 |
Total derivative contracts |  | $ | 30,272,764 |  |  | $ | 571,793 |  |  | $ | (135,530 | ) |  | $ | 436,263 |  |  | $ | (115,334 | ) |  | $ | 320,929 |
|  | Liabilities
|  | Notional 1 |  | Gross Fair Value |  | Netting Adjustments |  | Net Fair Value Before Cash Collateral |  | Cash Collateral |  | Fair Value Net of Cash Collateral
Customer risk management programs: |  |  |  |  |  |  |  |  |  |  |  |
Interest rate contracts |  |  |  |  |  |  |  |  |  |  |  |
To-be-announced residential mortgage-backed securities |  | $ | 10,558,151 |  |  | $ | 90,388 |  |  | $ | (26,787 | ) |  | $ | 63,601 |  |  | $ | (63,596 | ) |  | $ | 5 |
Interest rate swaps |  | 1,924,131 |  |  | 36,288 |  |  | (6,688 | ) |  | 29,600 |  |  | (4,110 | ) |  | 25,490 |
Energy contracts |  | 1,434,247 |  |  | 202,494 |  |  | (60,983 | ) |  | 141,511 |  |  | (1,490 | ) |  | 140,021 |
Agricultural contracts |  | 21,214 |  |  | 812 |  |  | (201 | ) |  | 611 |  |  | — |  |  | 611 |
Foreign exchange contracts |  | 177,423 |  |  | 175,922 |  |  | — |  |  | 175,922 |  |  | — |  |  | 175,922 |
Equity option contracts |  | 89,085 |  |  | 2,021 |  |  | — |  |  | 2,021 |  |  | — |  |  | 2,021 |
Total customer risk management programs |  | 14,204,251 |  |  | 507,925 |  |  | (94,659 | ) |  | 413,266 |  |  | (69,196 | ) |  | 344,070 |
Internal risk management programs |  | 19,634,642 |  |  | 66,422 |  |  | (40,871 | ) |  | 25,551 |  |  | (7,315 | ) |  | 18,236 |
Total derivative contracts |  | $ | 33,838,893 |  |  | $ | 574,347 |  |  | $ | (135,530 | ) |  | $ | 438,817 |  |  | $ | (76,511 | ) |  | $ | 362,306 |
1 | Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.
Derivative Instruments, Gain (Loss) in Statement of Earnings [Table Text Block] | The following summarizes the pre-tax net gains (losses) on derivative instruments and where they are recorded in the income statement (in thousands):
|  | Three Months Ended
|  | June 30, 2019 |  | June 30, 2018
|  | Brokerage and Trading Revenue |  | Gain (Loss) on Derivatives, Net |  | Brokerage and Trading Revenue |  | Gain (Loss)on Derivatives, Net
Customer risk management programs: |  |  |  |  |  |  |  |
Interest rate contracts |  |  |  |  |  |  |  |
To-be-announced residential mortgage-backed securities |  | $ | 2,212 |  |  | $ | — |  |  | $ | 7,586 |  |  | $ | — |
Interest rate swaps |  | 942 |  |  | — |  |  | 683 |  |  | — |
Energy contracts |  | 2,086 |  |  | — |  |  | 1,416 |  |  | — |
Agricultural contracts |  | 4 |  |  | — |  |  | 15 |  |  | — |
Foreign exchange contracts |  | 100 |  |  | — |  |  | 96 |  |  | — |
Equity option contracts |  | — |  |  | — |  |  | — |  |  | — |
Total customer risk management programs |  | 5,344 |  |  | — |  |  | 9,796 |  |  | — |
Internal risk management programs |  | 8,030 |  |  | 11,150 |  |  | (981 | ) |  | (3,057 | )
Total derivative contracts |  | $ | 13,374 |  |  | $ | 11,150 |  |  | $ | 8,815 |  |  | $ | (3,057 | )
|  | Six Months Ended
|  | June 30, 2019 |  | June 30, 2018
|  | Brokerage and Trading Revenue |  | Gain (Loss) on Derivatives, Net |  | Brokerage and Trading Revenue |  | Gain (Loss) on Derivatives, Net
Customer risk management programs: |  |  |  |  |  |  |  |
Interest rate contracts |  |  |  |  |  |  |  |
To-be-announced residential mortgage-backed securities |  | $ | 7,912 |  |  | $ | — |  |  | $ | 14,405 |  |  | $ | — |
Interest rate swaps |  | 1,535 |  |  | — |  |  | 1,439 |  |  | — |
Energy contracts |  | 2,312 |  |  | — |  |  | 4,556 |  |  | — |
Agricultural contracts |  | 8 |  |  | — |  |  | 30 |  |  | — |
Foreign exchange contracts |  | 254 |  |  | — |  |  | 272 |  |  | — |
Equity option contracts |  | — |  |  | — |  |  | — |  |  | — |
Total customer risk management programs |  | 12,021 |  |  | — |  |  | 20,702 |  |  | — |
Internal risk management programs |  | 735 |  |  | 15,817 |  |  | (2,864 | ) |  | (8,742 | )
Total derivative contracts |  | $ | 12,756 |  |  | $ | 15,817 |  |  | $ | 17,838 |  |  | $ | (8,742 | )

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