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Derivatives - Summary of the Composition of Derivatives by Index (Detail) - BRL (R$) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | R$ 20,000,000 |
Balance sheet account receivable / (received) (payable) paid | (4,973,000,000) | R$ (3,518,000,000)
Adjustment to market value (in results / stockholders' equity) | (1,001,000,000) | (535,000,000)
Fair value | (5,974,000,000) | (4,053,000,000)
Purchase commitments interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 301,898,000,000 |
Foreign currency [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 22,410,000,000 |
Commitments to sell [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 339,416,000,000 |
Commitments to sell shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 1,163,000,000 |
Commodities [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 1,049,000,000 |
Commitments to sell interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 308,824,000,000 |
Foreign currency [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 28,380,000,000 |
Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 1,153,000,000 |
Balance sheet account receivable / (received) (payable) paid | (10,000,000) |
Adjustment to market value (in results / stockholders' equity) | (65,000,000) |
Fair value | (75,000,000) |
Up to one year [member] | Purchases receivable [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 668,000,000 |
Balance sheet account receivable / (received) (payable) paid | 796,000,000 |
Adjustment to market value (in results / stockholders' equity) | (6,000,000) |
Fair value | 790,000,000 |
Up to one year [member] | Sales receivable [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 1,653,000,000 | 1,307,000,000
Balance sheet account receivable / (received) (payable) paid | 1,368,000,000 | 1,337,000,000
Adjustment to market value (in results / stockholders' equity) | 4,000,000 | 2,000,000
Fair value | 1,372,000,000 | 1,339,000,000
Assets 1 [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Balance sheet account receivable / (received) (payable) paid | 19,888,000,000 | 15,342,000,000
Adjustment to market value (in results / stockholders' equity) | 21,966,000,000 | 8,124,000,000
Fair value | 41,854,000,000 | 23,466,000,000
Futures [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 664,884,000,000 | 586,033,000,000
Futures [Member] | Purchase commitments [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 325,468,000,000 | 268,228,000,000
Futures [Member] | Purchase commitments shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 1,084,000,000 | 13,675,000,000
Futures [Member] | Commodities [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 76,000,000 | 194,000,000
Futures [Member] | Purchase commitments interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 243,369,000,000
Futures [Member] | Foreign currency [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 10,990,000,000
Futures [Member] | Commitments to sell [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 317,805,000,000
Futures [Member] | Commitments to sell shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 13,965,000,000
Futures [Member] | Commodities [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 155,000,000
Futures [Member] | Commitments to sell interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 265,218,000,000
Futures [Member] | Foreign currency [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 38,467,000,000
Futures [Member] | Non-current [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 142,597,000,000 | 140,591,000,000
Swap [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 1,094,378,000,000 | 940,844,000,000
Balance sheet account receivable / (received) (payable) paid | (5,267,000,000) | (5,259,000,000)
Adjustment to market value (in results / stockholders' equity) | (1,202,000,000) | (1,164,000,000)
Fair value | (6,469,000,000) | (6,423,000,000)
Swap [member] | Asset position [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 1,094,378,000,000 | 940,844,000,000
Balance sheet account receivable / (received) (payable) paid | 5,566,000,000 | 6,270,000,000
Adjustment to market value (in results / stockholders' equity) | 20,892,000,000 | 6,823,000,000
Fair value | 26,458,000,000 | 13,093,000,000
Swap [member] | Asset position interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 1,075,534,000,000 | 925,381,000,000
Balance sheet account receivable / (received) (payable) paid | 4,596,000,000 | 5,126,000,000
Adjustment to market value (in results / stockholders' equity) | 19,813,000,000 | 6,401,000,000
Fair value | 24,409,000,000 | 11,527,000,000
Swap [member] | Asset position - Foreign currency [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 18,270,000,000 | 15,457,000,000
Balance sheet account receivable / (received) (payable) paid | 970,000,000 | 1,144,000,000
Adjustment to market value (in results / stockholders' equity) | 1,070,000,000 | 422,000,000
Fair value | 2,040,000,000 | 1,566,000,000
Swap [member] | Liability position [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 1,094,378,000,000 | 940,844,000,000
Balance sheet account receivable / (received) (payable) paid | (10,833,000,000) | (11,529,000,000)
Adjustment to market value (in results / stockholders' equity) | (22,094,000,000) | (7,987,000,000)
Fair value | (32,927,000,000) | (19,516,000,000)
Swap [member] | Liability position shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 49,000,000 | 76,000,000
Balance sheet account receivable / (received) (payable) paid | (9,000,000) | (5,000,000)
Adjustment to market value (in results / stockholders' equity) |  | 2,000,000
Fair value | (9,000,000) | (3,000,000)
Swap [member] | Liability position interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 1,068,660,000,000 | 915,079,000,000
Balance sheet account receivable / (received) (payable) paid | (9,383,000,000) | (9,427,000,000)
Adjustment to market value (in results / stockholders' equity) | (21,855,000,000) | (7,979,000,000)
Fair value | (31,238,000,000) | (17,406,000,000)
Swap [member] | Foreign currency [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 24,814,000,000 | 25,069,000,000
Balance sheet account receivable / (received) (payable) paid | (1,441,000,000) | (2,097,000,000)
Adjustment to market value (in results / stockholders' equity) | (227,000,000) | (9,000,000)
Fair value | (1,668,000,000) | (2,106,000,000)
Swap [member] | Commodities [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 574,000,000 | 6,000,000
Adjustment to market value (in results / stockholders' equity) | 9,000,000 |
Fair value | 9,000,000 |
Swap [member] | Commodities [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 855,000,000 |
Adjustment to market value (in results / stockholders' equity) | (12,000,000) |
Fair value | (12,000,000) |
Swap [member] | Non-current [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 763,206,000,000 | 677,323,000,000
Option contract [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 1,720,205,000,000 | 1,262,568,000,000
Balance sheet account receivable / (received) (payable) paid | (546,000,000) | 324,000,000
Adjustment to market value (in results / stockholders' equity) | (59,000,000) | (38,000,000)
Fair value | (605,000,000) | 286,000,000
Option contract [member] | Non-current [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 152,624,000,000 | 206,072,000,000
Option contract [member] | Non-current [Member] | Purchase commitments [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 245,824,000,000 | 151,179,000,000
Balance sheet account receivable / (received) (payable) paid | 6,191,000,000 | 1,935,000,000
Adjustment to market value (in results / stockholders' equity) | (6,000,000) | (108,000,000)
Fair value | 6,185,000,000 | 1,827,000,000
Option contract [member] | Non-current [Member] | Purchase commitments shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 11,513,000,000 | 8,211,000,000
Balance sheet account receivable / (received) (payable) paid | 256,000,000 | 289,000,000
Adjustment to market value (in results / stockholders' equity) | 515,000,000 | 100,000,000
Fair value | 771,000,000 | 389,000,000
Option contract [member] | Non-current [Member] | Commodities [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 268,000,000 | 321,000,000
Balance sheet account receivable / (received) (payable) paid | 7,000,000 | 10,000,000
Adjustment to market value (in results / stockholders' equity) | 10,000,000 | (3,000,000)
Fair value | 17,000,000 | 7,000,000
Option contract [member] | Non-current [Member] | Purchase commitments interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 188,110,000,000 | 100,338,000,000
Balance sheet account receivable / (received) (payable) paid | 465,000,000 | 183,000,000
Adjustment to market value (in results / stockholders' equity) | (331,000,000) | (98,000,000)
Fair value | 134,000,000 | 85,000,000
Option contract [member] | Non-current [Member] | Foreign currency [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 45,933,000,000 | 42,309,000,000
Balance sheet account receivable / (received) (payable) paid | 5,463,000,000 | 1,453,000,000
Adjustment to market value (in results / stockholders' equity) | (200,000,000) | (107,000,000)
Fair value | 5,263,000,000 | 1,346,000,000
Option contract [member] | Non-current [Member] | Commitments to sell [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 626,187,000,000 | 495,464,000,000
Balance sheet account receivable / (received) (payable) paid | 1,667,000,000 | 1,808,000,000
Adjustment to market value (in results / stockholders' equity) | 604,000,000 | 580,000,000
Fair value | 2,271,000,000 | 2,388,000,000
Option contract [member] | Non-current [Member] | Commitments to sell shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 12,294,000,000 | 10,802,000,000
Balance sheet account receivable / (received) (payable) paid | 396,000,000 | 394,000,000
Adjustment to market value (in results / stockholders' equity) | (40,000,000) | 500,000,000
Fair value | 356,000,000 | 894,000,000
Option contract [member] | Non-current [Member] | Commodities [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 228,000,000 | 278,000,000
Balance sheet account receivable / (received) (payable) paid | 5,000,000 | 11,000,000
Adjustment to market value (in results / stockholders' equity) | (2,000,000) | 1,000,000
Fair value | 3,000,000 | 12,000,000
Option contract [member] | Non-current [Member] | Commitments to sell interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 568,442,000,000 | 441,673,000,000
Balance sheet account receivable / (received) (payable) paid | 513,000,000 | 427,000,000
Adjustment to market value (in results / stockholders' equity) | 887,000,000 | 460,000,000
Fair value | 1,400,000,000 | 887,000,000
Option contract [member] | Non-current [Member] | Foreign currency [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 45,223,000,000 | 42,711,000,000
Balance sheet account receivable / (received) (payable) paid | 753,000,000 | 976,000,000
Adjustment to market value (in results / stockholders' equity) | (241,000,000) | (381,000,000)
Fair value | 512,000,000 | 595,000,000
Option contract [member] | Up to one year [member] | Purchase commitments [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 172,703,000,000 | 116,005,000,000
Balance sheet account receivable / (received) (payable) paid | (6,671,000,000) | (1,564,000,000)
Adjustment to market value (in results / stockholders' equity) | (19,000,000) | 153,000,000
Fair value | (6,690,000,000) | (1,411,000,000)
Option contract [member] | Up to one year [member] | Purchase commitments shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 6,312,000,000 | 9,716,000,000
Balance sheet account receivable / (received) (payable) paid | (180,000,000) | (184,000,000)
Adjustment to market value (in results / stockholders' equity) | (451,000,000) | (98,000,000)
Fair value | (631,000,000) | (282,000,000)
Option contract [member] | Up to one year [member] | Commodities [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 235,000,000 | 317,000,000
Balance sheet account receivable / (received) (payable) paid | (10,000,000) | (9,000,000)
Adjustment to market value (in results / stockholders' equity) | (8,000,000) | 6,000,000
Fair value | (18,000,000) | (3,000,000)
Option contract [member] | Up to one year [member] | Purchase commitments interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 129,647,000,000 | 69,934,000,000
Balance sheet account receivable / (received) (payable) paid | (412,000,000) | (147,000,000)
Adjustment to market value (in results / stockholders' equity) | 329,000,000 | 95,000,000
Fair value | (83,000,000) | (52,000,000)
Option contract [member] | Up to one year [member] | Foreign currency [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 36,509,000,000 | 36,038,000,000
Balance sheet account receivable / (received) (payable) paid | (6,069,000,000) | (1,224,000,000)
Adjustment to market value (in results / stockholders' equity) | 111,000,000 | 150,000,000
Fair value | (5,958,000,000) | (1,074,000,000)
Option contract [member] | Up to one year [member] | Commitments to sell [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 675,491,000,000 | 499,920,000,000
Balance sheet account receivable / (received) (payable) paid | (1,733,000,000) | (1,855,000,000)
Adjustment to market value (in results / stockholders' equity) | (638,000,000) | (663,000,000)
Fair value | (2,371,000,000) | (2,518,000,000)
Option contract [member] | Up to one year [member] | Commitments to sell shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 11,152,000,000 | 8,898,000,000
Balance sheet account receivable / (received) (payable) paid | (269,000,000) | (246,000,000)
Adjustment to market value (in results / stockholders' equity) | (37,000,000) | (503,000,000)
Fair value | (306,000,000) | (749,000,000)
Option contract [member] | Up to one year [member] | Commodities [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 485,000,000 | 192,000,000
Balance sheet account receivable / (received) (payable) paid | (11,000,000) | (6,000,000)
Adjustment to market value (in results / stockholders' equity) |  | (2,000,000)
Fair value | (11,000,000) | (8,000,000)
Option contract [member] | Up to one year [member] | Commitments to sell interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 621,405,000,000 | 448,029,000,000
Balance sheet account receivable / (received) (payable) paid | (428,000,000) | (528,000,000)
Adjustment to market value (in results / stockholders' equity) | (888,000,000) | (497,000,000)
Fair value | (1,316,000,000) | (1,025,000,000)
Option contract [member] | Up to one year [member] | Foreign currency [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 42,449,000,000 | 42,801,000,000
Balance sheet account receivable / (received) (payable) paid | (1,025,000,000) | (1,075,000,000)
Adjustment to market value (in results / stockholders' equity) | 287,000,000 | 339,000,000
Fair value | (738,000,000) | (736,000,000)
Forward [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 5,134,000,000 | 2,341,000,000
Forward [member] | Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 5,134,000,000 | 2,341,000,000
Balance sheet account receivable / (received) (payable) paid | 1,412,000,000 | 1,363,000,000
Adjustment to market value (in results / stockholders' equity) | (4,000,000) | 2,000,000
Fair value | 1,408,000,000 | 1,365,000,000
Purchases receivable [Member] | Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 415,000,000
Balance sheet account receivable / (received) (payable) paid |  | 496,000,000
Fair value |  | 496,000,000
Purchases receivable [Member] | Up to one year [member] | Purchases receivable shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 488,000,000 | 36,000,000
Balance sheet account receivable / (received) (payable) paid | 488,000,000 | 36,000,000
Adjustment to market value (in results / stockholders' equity) | (6,000,000) |
Fair value | 482,000,000 | 36,000,000
Purchases receivable [Member] | Up to one year [member] | Purchases receivable interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 160,000,000 | 379,000,000
Balance sheet account receivable / (received) (payable) paid | 308,000,000 | 460,000,000
Fair value | 308,000,000 | 460,000,000
Purchases payable [Member] | Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 660,000,000 |
Balance sheet account receivable / (received) (payable) paid | (160,000,000) | (381,000,000)
Fair value | (160,000,000) | (381,000,000)
Purchases payable [Member] | Up to one year [member] | Purchases payable interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Balance sheet account receivable / (received) (payable) paid | (160,000,000) | (379,000,000)
Fair value | (160,000,000) | (379,000,000)
Purchases payable [Member] | Up to one year [member] | Purchases Payable Shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Balance sheet account receivable / (received) (payable) paid |  | (2,000,000)
Fair value |  | (2,000,000)
Purchases payable [Member] | Up to one year [member] | Foreign currency [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 660,000,000 |
Sales receivable interest [member] | Up to one year [member] | Sales receivable shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 786,000,000 | 1,307,000,000
Balance sheet account receivable / (received) (payable) paid | 776,000,000 | 1,292,000,000
Adjustment to market value (in results / stockholders' equity) | 3,000,000 | 2,000,000
Fair value | 779,000,000 | 1,294,000,000
Sales receivable interest [member] | Up to one year [member] | Sales receivable interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Balance sheet account receivable / (received) (payable) paid | 592,000,000 | 45,000,000
Adjustment to market value (in results / stockholders' equity) | 1,000,000 |
Fair value | 593,000,000 | 45,000,000
Sales receivable interest [member] | Up to one year [member] | Foreign currency [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 867,000,000 |
Credit derivatives [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 12,739,000,000 | 8,324,000,000
Credit derivatives [Member] | Non-current [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 7,260,000,000 | 6,456,000,000
Credit derivatives [Member] | Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 12,739,000,000 | 8,324,000,000
Balance sheet account receivable / (received) (payable) paid | (236,000,000) | (243,000,000)
Adjustment to market value (in results / stockholders' equity) | 363,000,000 | 223,000,000
Fair value | 127,000,000 | (20,000,000)
Credit derivatives [Member] | Asset position [Member] | Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 3,825,000,000
Balance sheet account receivable / (received) (payable) paid |  | (87,000,000)
Adjustment to market value (in results / stockholders' equity) |  | 207,000,000
Fair value |  | 120,000,000
Credit derivatives [Member] | Asset position [Member] | Up to one year [member] | Asset position [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 9,878,000,000 |
Balance sheet account receivable / (received) (payable) paid | (165,000,000) |
Adjustment to market value (in results / stockholders' equity) | 332,000,000 |
Fair value | 167,000,000 |
Credit derivatives [Member] | Asset position [Member] | Up to one year [member] | Credit derivatives asset position shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 2,307,000,000 | 1,576,000,000
Balance sheet account receivable / (received) (payable) paid | (81,000,000) | (44,000,000)
Adjustment to market value (in results / stockholders' equity) | 215,000,000 | 136,000,000
Fair value | 134,000,000 | 92,000,000
Credit derivatives [Member] | Asset position [Member] | Up to one year [member] | Credit derivatives asset position interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 7,423,000,000 | 2,249,000,000
Balance sheet account receivable / (received) (payable) paid | (87,000,000) | (43,000,000)
Adjustment to market value (in results / stockholders' equity) | 114,000,000 | 71,000,000
Fair value | 27,000,000 | 28,000,000
Credit derivatives [Member] | Asset position [Member] | Up to one year [member] | Commodities [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 27,000,000 |
Balance sheet account receivable / (received) (payable) paid | (1,000,000) |
Adjustment to market value (in results / stockholders' equity) | 3,000,000 |
Fair value | 2,000,000 |
Credit derivatives [Member] | Asset position [Member] | Up to one year [member] | Foreign currency [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 121,000,000 |
Balance sheet account receivable / (received) (payable) paid | 4,000,000 |
Fair value | 4,000,000 |
Non deliverable forward [member] | Asset position [Member] | Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 122,495,000,000
Balance sheet account receivable / (received) (payable) paid |  | 3,378,000,000
Adjustment to market value (in results / stockholders' equity) |  | 333,000,000
Fair value |  | 3,711,000,000
Non deliverable forward [member] | Asset position [Member] | Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 295,508,000,000 | 225,355,000,000
Balance sheet account receivable / (received) (payable) paid | (552,000,000) | 99,000,000
Adjustment to market value (in results / stockholders' equity) | 27,000,000 | 228,000,000
Fair value | (525,000,000) | 327,000,000
Non deliverable forward [member] | Asset position [Member] | Up to one year [member] | Asset position [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 138,772,000,000 |
Balance sheet account receivable / (received) (payable) paid | 4,239,000,000 |
Adjustment to market value (in results / stockholders' equity) | 207,000,000 |
Fair value | 4,446,000,000 |
Non deliverable forward [member] | Asset position [Member] | Up to one year [member] | Commodities [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 570,000,000 | 167,000,000
Balance sheet account receivable / (received) (payable) paid | 34,000,000 | 16,000,000
Adjustment to market value (in results / stockholders' equity) | (1,000,000) | 1,000,000
Fair value | 33,000,000 | 17,000,000
Non deliverable forward [member] | Asset position [Member] | Up to one year [member] | Foreign currency [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 138,202,000,000 | 122,328,000,000
Balance sheet account receivable / (received) (payable) paid | 4,205,000,000 | 3,362,000,000
Adjustment to market value (in results / stockholders' equity) | 208,000,000 | 332,000,000
Fair value | 4,413,000,000 | 3,694,000,000
Other derivative financial instruments [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 6,581,000,000 | 5,304,000,000
Other derivative financial instruments [Member] | Non-current [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 5,463,000,000 | 4,534,000,000
Other derivative financial instruments [Member] | Liability position [Member] | Up to one year [member] | Other derivative financial instruments shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 695,000,000 |
Balance sheet account receivable / (received) (payable) paid | 2,000,000 |
Adjustment to market value (in results / stockholders' equity) | (41,000,000) |
Fair value | (39,000,000) |
Other derivative financial instruments [Member] | Liability position [Member] | Up to one year [member] | Foreign currency [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Adjustment to market value (in results / stockholders' equity) | (18,000,000) |
Fair value | (18,000,000) |
Other derivative financial instruments [Member] | Asset position [Member] | Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 5,304,000,000
Balance sheet account receivable / (received) (payable) paid |  | 198,000,000
Adjustment to market value (in results / stockholders' equity) |  | 214,000,000
Fair value |  | 412,000,000
Sales Deliverable [Member] | Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 2,153,000,000 | 619,000,000
Balance sheet account receivable / (received) (payable) paid | (592,000,000) | (89,000,000)
Adjustment to market value (in results / stockholders' equity) | (2,000,000) |
Fair value | (594,000,000) | (89,000,000)
Sales Deliverable [Member] | Up to one year [member] | Sales deliverable shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 592,000,000 | 2,000,000
Balance sheet account receivable / (received) (payable) paid | (592,000,000) | (2,000,000)
Adjustment to market value (in results / stockholders' equity) | (1,000,000) |
Fair value | (593,000,000) | (2,000,000)
Sales Deliverable [Member] | Up to one year [member] | Sales deliverable interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 45,000,000
Balance sheet account receivable / (received) (payable) paid |  | (87,000,000)
Fair value |  | (87,000,000)
Sales Deliverable [Member] | Up to one year [member] | Sales deliverable foreign currency [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 1,561,000,000 | 572,000,000
Adjustment to market value (in results / stockholders' equity) | (1,000,000) |
Fair value | (1,000,000) |
Liability position [Member] | Credit derivatives [Member] | Up to one year [member] | Liability position [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 2,861,000,000 | 4,499,000,000
Balance sheet account receivable / (received) (payable) paid | (71,000,000) | (156,000,000)
Adjustment to market value (in results / stockholders' equity) | 31,000,000 | 16,000,000
Fair value | (40,000,000) | (140,000,000)
Liability position [Member] | Credit derivatives [Member] | Up to one year [member] | Liability position shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 719,000,000 | 1,316,000,000
Balance sheet account receivable / (received) (payable) paid | (28,000,000) | (55,000,000)
Adjustment to market value (in results / stockholders' equity) | 8,000,000 | (14,000,000)
Fair value | (20,000,000) | (69,000,000)
Liability position [Member] | Credit derivatives [Member] | Up to one year [member] | Liability position interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 2,140,000,000 | 3,183,000,000
Balance sheet account receivable / (received) (payable) paid | (43,000,000) | (101,000,000)
Adjustment to market value (in results / stockholders' equity) | 23,000,000 | 30,000,000
Fair value | (20,000,000) | (71,000,000)
Liability position [Member] | Credit derivatives [Member] | Up to one year [member] | Commodities [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 2,000,000 |
Liability position [Member] | Non deliverable forward [member] | Up to one year [member] | Liability position [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 156,736,000,000 | 102,860,000,000
Balance sheet account receivable / (received) (payable) paid | (4,791,000,000) | (3,279,000,000)
Adjustment to market value (in results / stockholders' equity) | (180,000,000) | (105,000,000)
Fair value | (4,971,000,000) | (3,384,000,000)
Liability position [Member] | Non deliverable forward [member] | Up to one year [member] | Foreign currency [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 156,420,000,000 |
Balance sheet account receivable / (received) (payable) paid | (4,781,000,000) |
Adjustment to market value (in results / stockholders' equity) | (179,000,000) |
Fair value | (4,960,000,000) |
Liability position [Member] | Non deliverable forward [member] | Up to one year [member] | Commodities [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 316,000,000 | 96,000,000
Balance sheet account receivable / (received) (payable) paid | (10,000,000) | (6,000,000)
Adjustment to market value (in results / stockholders' equity) | (1,000,000) | 1,000,000
Fair value | (11,000,000) | (5,000,000)
Liability position [Member] | Non deliverable forward [member] | Up to one year [member] | Foreign currency [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 102,764,000,000
Balance sheet account receivable / (received) (payable) paid |  | (3,273,000,000)
Adjustment to market value (in results / stockholders' equity) |  | (106,000,000)
Fair value |  | (3,379,000,000)
Liability position [Member] | Other derivative financial instruments [Member] | Up to one year [member] | Other derivative financial instruments shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 842,000,000
Balance sheet account receivable / (received) (payable) paid |  | (4,000,000)
Adjustment to market value (in results / stockholders' equity) |  | (42,000,000)
Fair value |  | (46,000,000)
Liability position [Member] | Other derivative financial instruments [Member] | Up to one year [member] | Other derivative financial instruments interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 458,000,000 | 158,000,000
Balance sheet account receivable / (received) (payable) paid | (12,000,000) | (2,000,000)
Adjustment to market value (in results / stockholders' equity) | (6,000,000) | (21,000,000)
Fair value | (18,000,000) | (23,000,000)
Liability position [Member] | Other derivative financial instruments [Member] | Up to one year [member] | Foreign currency [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 8,000,000
Balance sheet account receivable / (received) (payable) paid |  | (1,000,000)
Adjustment to market value (in results / stockholders' equity) |  | (10,000,000)
Fair value |  | (11,000,000)
Liability position [Member] | Other derivative financial instruments [Member] | Liability position [Member] | Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
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Balance sheet account receivable / (received) (payable) paid |  | (7,000,000)
Adjustment to market value (in results / stockholders' equity) |  | (73,000,000)
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Liability position [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
Balance sheet account receivable / (received) (payable) paid | (24,861,000,000) | (18,860,000,000)
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Fair value | (47,828,000,000) | (27,519,000,000)
Commodities [member] | Swap [member] | Commodities [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount |  | 620,000,000
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Fair value |  | (1,000,000)
Asset position [Member] | Asset position [Member] | Up to one year [member] | Foreign currency [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
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Fair value | 4,000,000 |
Asset position [Member] | Other derivative financial instruments [Member] | Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
Off-balance sheet notional amount | 6,581,000,000 |
Balance sheet account receivable / (received) (payable) paid | 216,000,000 |
Adjustment to market value (in results / stockholders' equity) | (126,000,000) |
Fair value | 90,000,000 |
Asset position [Member] | Other derivative financial instruments [Member] | Up to one year [member] | Other derivative financial instruments shares [member] |  |
Disclosure of Financial Assets [Line Items] |  |
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Balance sheet account receivable / (received) (payable) paid |  | (8,000,000)
Adjustment to market value (in results / stockholders' equity) |  | 10,000,000
Fair value |  | 2,000,000
Asset position [Member] | Other derivative financial instruments [Member] | Up to one year [member] | Other derivative financial instruments interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
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Balance sheet account receivable / (received) (payable) paid | 226,000,000 |
Adjustment to market value (in results / stockholders' equity) | (65,000,000) |
Fair value | 161,000,000 |
Asset position [Member] | Other derivative financial instruments [Member] | Asset position [Member] | Foreign currency [Member] |  |
Disclosure of Financial Assets [Line Items] |  |
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Adjustment to market value (in results / stockholders' equity) |  | 212,000,000
Fair value |  | 212,000,000
Asset position [Member] | Other derivative financial instruments [Member] | Asset position [Member] | Up to one year [member] |  |
Disclosure of Financial Assets [Line Items] |  |
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Balance sheet account receivable / (received) (payable) paid | 226,000,000 | 205,000,000
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Asset position [Member] | Other derivative financial instruments [Member] | Asset position [Member] | Up to one year [member] | Other derivative financial instruments interest [member] |  |
Disclosure of Financial Assets [Line Items] |  |
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