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Valuation of derivatives, interest cost from labor obligations and other financial items, net | 12 Months Ended
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Dec. 31, 2020
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Valuation of derivatives, interest cost from labor obligations and other financial items, net | 22. Valuation of derivatives, interest cost from labor obligations and other financial items, net For the years ended December 31, 2018, 2019 and 2020, valuation of derivatives and other financial items are as follows:
|  | For the years ended December 31, |
|  | 2018 |  |  | 2019 |  |  | 2020 |
Controlling interest: |  |  |  |  |  |  |  |  |  |  |  |
(Loss) gain in valuation of derivatives, net |  | Ps. | (4,686,407 | ) |  | Ps. | 4,432,023 |  |  | Ps. | 12,378,193 |
Capitalized interest expense (Note 10 b) |  |  | 2,020,288 |  |  |  | 2,233,358 |  |  |  | 1,771,613 |
Commissions |  |  | (1,901,473 | ) |  |  | (2,820,477 | ) |  |  | (1,135,082 | )
Interest cost of labor obligations (Note 18) |  |  | (9,968,526 | ) |  |  | (11,377,054 | ) |  |  | (13,105,693 | )
Interest expense on taxes |  |  | (555,921 | ) |  |  | (516,522 | ) |  |  | (59,032 | )
Dividend received (Note 4) |  |  | 2,605,333 |  |  |  | 1,773,336 |  |  |  | 2,122,826 |
Gain on net monetary positions |  |  | 4,429,145 |  |  |  | 4,267,194 |  |  |  | 3,262,512 |
Other financial cost |  |  | (2,118,755 | ) |  |  | (5,067,200 | ) |  |  | (3,944,229 | )
Total |  | Ps. | (10,176,316 | ) |  | Ps. | (7,075,342 | ) |  | Ps. | 1,291,108 |

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