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Finance Results - Summary of Finance Results (Detail) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Financial results [abstract] |  |  |
Interest on debt | R$ (3,162,853) | R$ (2,148,322) | R$ (1,626,911)
Monetary and exchange rate variation | (1,069,157) | (3,253,446) | (438,430)
Derivatives and fair value measurement | 2,193,855 | 3,918,848 | 764,816
Amortization of borrowing costs | (341,034) | (58,732) | (56,397)
Guarantees and warranties | 52,082 | 56,079 | 65,207
Cost of gross debt | (2,431,271) | (1,597,731) | (1,422,129)
Income from financial investment and exchange rate in cash and cash equivalents | 600,894 | 369,690 | 407,701
Cost of debt, net | (1,830,377) | (1,228,041) | (1,014,428)
Interest on other receivables | 411,394 | 201,060 | 435,498
Monetary variation of other financial assets | (372) |  |
Interest on other payables | (424,946) | (16,293) | (302,620)
Interest on leases payable | (407,972) | (595,482) | (559,240)
Interest on shareholders' equity | (8,288) | (4,959) | (18,726)
Interest on contingencies and contracts | (315,620) | (234,368) | (222,617)
Bank charges and other | (96,983) | (75,408) | (196,230)
Foreign exchange, net | 115,607 | (30,505) | (89,260)
Other charges and monetary variations net | (727,180) | (755,955) | (953,195)
Finance results, net | (2,557,557) | (1,983,996) | (1,967,623)
Finance expense | (2,527,506) | (4,727,561) | (3,690,578)
Finance income | 1,258,441 | 407,710 | 974,604
Foreign exchange, net | (1,099,536) | (3,258,656) | (526,946)
Derivatives | (188,956) | 5,594,511 | 1,275,297
Finance results, net | R$ (2,557,557) | R$ (1,983,996) | R$ (1,967,623)

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