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v3.19.1

Accounts payable, accrued liabilities and asset retirement obligations (Tables) | 12 Months Ended
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Dec. 31, 2018
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Components Accounts Payable and Accrued Liabilities | The components of the caption accounts payable and accrued liabilities are as follows:
|  | At December 31, |
|  | 2017 |  |  | 2018 |
Suppliers |  |  | Ps. 106,483,848 |  |  |  | Ps. 118,406,380 |
Sundry creditors |  |  | 91,842,929 |  |  |  | 91,087,197 |
Interest payable |  |  | 8,930,561 |  |  |  | 8,535,519 |
Guarantee deposits from customers |  |  | 1,460,286 |  |  |  | 1,421,336 |
Dividends payable |  |  | 3,955,783 |  |  |  | 2,506,835 |
Total |  |  | Ps. 212,673,407 |  |  |  | Ps. 221,957,267 |
Summary of Balance of Accrued Liabilities | The balance of accrued liabilities at December 31, 2017 and 2018 are as follows:
|  | At December 31, |
|  | 2017 |  |  | 2018 |
Current liabilities |  |  |  |  |  |  |  |
Direct employee benefits payable |  |  | Ps. 16,673,627 |  |  |  | Ps. 16,152,118 |
Contingencies |  |  | 51,079,131 |  |  |  | 40,281,573 |
Total |  |  | Ps. 67,752,758 |  |  |  | Ps. 56,433,691 |
Summary of Movements in Contingent Liabilities | The movements in contingencies for the years ended December 31, 2017 and 2018 are as follows:
|  | Balance at December 31, 2016 |  |  | Business combination |  |  | Effect of translation |  |  | Increase of the year |  |  | Applications |  |  | Balance at December 31, 2017 |
|  | Payments |  |  | Reversals |
Contingencies |  |  | Ps. 50,766,070 |  |  |  | Ps. 115,971 |  |  |  | Ps. (648,685) |  |  |  | Ps. 10,510,473 |  |  |  | Ps. (7,618,520) |  |  |  | Ps. (2,046,178) |  |  |  | Ps. 51,079,131 |
|  | Balance at December 31, 2017 |  |  | Business combination |  |  | Effect of translation |  |  | Increase of the year |  |  | Applications |  |  | Balance at December 31, 2018 |
|  | Payments |  |  | Reversals |
Contingencies |  |  | Ps. 51,079,131 |  |  |  | Ps. 7,812 |  |  |  | Ps. (5,729,826) |  |  |  | Ps. 15,683,252 |  |  |  | Ps. (6,203,329) |  |  |  | Ps. (14,555,467) |  |  |  | Ps. 40,281,573 |
Summary of Movements in Asset Retirement Obligations | The movements in the asset retirement obligations for the years ended December 31, 2017 and 2018 are as follows:
|  | Balance at December 31, 2016 |  |  | Effect of translation |  |  | Increase of the year |  |  | Applications |  |  | Balance at December 31, 2017 |
|  | Payments |  |  | Reversals |
Asset retirement obligations |  |  | Ps. 16,288,631 |  |  |  | Ps. (119,928) |  |  |  | Ps. 3,160,320 |  |  |  | Ps. (126,088) |  |  |  | Ps. (957,806) |  |  |  | Ps. 18,245,129 |
|  | Balance at December 31, 2017 |  |  | Effect of translation |  |  | Increase of the year |  |  | Applications |  |  | Balance at December 31, 2018 |
|  | Payments |  |  | Reversals |
Asset retirement obligations |  |  | Ps. 18,245,129 |  |  |  | Ps. (2,020,853) |  |  |  | Ps. 1,062,745 |  |  |  | Ps. (151,364) |  |  |  | Ps. (1,164,056) |  |  |  | Ps. 15,971,601 |

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