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Stockholders' Equity - Schedule of Stockholders' Compensation (Detail) - BRL (R$) R$ / shares in Units, R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of classes of share capital [abstract] |  |  |
Dividends | R$ 0.0150 | R$ 150 | R$ 150
Dividends | 0.0150 | 150 | 150
Dividends provision | 0.7869 | 0.6240 | 0.1304
Interest on capital |  | 0.1252 | 3,990
Interest on capital | 0.0376 | 0.0106 | 0.1445
Identified in Profit Reserve In Stockholders' Equity | R$ 1.0067 | R$ 1.8001 | R$ 2.1126
Paid / prepaid, Gross | R$ 9,274 | R$ 5,921 | R$ 3,666
Dividends-paid, Gross | 7,668 |  | 1,074
Accrued (Recorded in Other Liabilities) | 512 | 248 | 1,877
Interest on capital-paid | 366 | 811 | 2,592
Identified in Profit Reserve In Stockholders' Equity | 9,811 | 17,498 | 13,658
Declared (Recorded in Other Liabilities) | 146 | 145 | 98
Dividends provision |  | 4,041 |
Interest on capital - credited |  | 103 | 936
Total,Gross | 19,597 | 23,667 | 19,201
Accrued (Recorded in Other Liabilities) | (55) | (15) | (140)
Paid / prepaid |  | (122) | (389)
Interest on capital, WHT | (55) | (122) | (389)
Interest on capital, WHT |  | (15) | (140)
Identified in Profit Reserve In Stockholders' Equity | (765) | (1,093) | (1,114)
Total, WHT | (820) | (1,230) | (1,643)
Accrued (Recorded in Other Liabilities) | 457 | 233 | 1,737
Paid / prepaid | 9,274 | 5,799 | 3,277
Dividends - 1 monthly installment paid on 01/02/2017 | 146 | 145 | 98
Dividends - 11 monthly installments paid from February to December 2016 | 1,606 | 1,069 | 1,074
Dividends provision |  | 4,041 | 843
Interest on capital - paid on 08/25/2016 | 311 | 689 | 2,203
Interest on capital - credited |  | 88 | 796
Identified in Profit Reserve In Stockholders' Equity | 9,046 | 16,405 | 12,544
Total | R$ 18,777 | R$ 22,437 | R$ 17,558

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