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Significant Accounting Policies - Disclosure of Recognition of Effects of Inflation in Countries with Hyperinflationary Economic Environments (Detail) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
2016- 2018 [member] | Mexico [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 15.70% |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Guatemala [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 12.20% |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Costa Rica [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 5.70% |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Panama [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 2.10% |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Colombia [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 13.40% |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Nicaragua [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 13.10% |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Argentina [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 158.40% |  |
Type of Economy | Hyperinflationary |  |
2016- 2018 [member] | Venezuela [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Type of Economy | Hyperinflationary |  |
2016- 2018 [member] | Brazil [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 25.00% |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Philippines [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 11.90% |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Euro Zone [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 2.70% |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Chile [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 9.70% |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Peru [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 9.30% |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Ecuador [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 30.30% |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Uruguay [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation | 25.30% |  |
Type of Economy | Non-hyperinflationary |  |
2015 - 2017 [member] | Mexico [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 12.70% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Guatemala [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 13.50% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Costa Rica [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 2.50% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Panama [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 2.30% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Colombia [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 17.50% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Nicaragua [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 12.30% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Argentina [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 101.50% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Venezuela [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 30690.00% |
Type of Economy |  | Hyperinflationary |
2015 - 2017 [member] | Brazil [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 21.10% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Philippines [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 7.50% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Euro Zone [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 2.70% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Chile [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 9.70% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Peru [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 9.30% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Ecuador [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  | 30.30% |
Type of Economy |  | Non-hyperinflationary |
2015 - 2017 [member] | Uruguay [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Type of Economy |  | Non-hyperinflationary |
2014-2016 [member] | Mexico [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 9.90%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Guatemala [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 10.60%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Costa Rica [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 5.10%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Panama [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 2.80%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Colombia [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 17.00%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Nicaragua [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 13.10%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Argentina [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 99.70%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Venezuela [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 2263.00%
Type of Economy |  |  | Hyperinflationary
2014-2016 [member] | Brazil [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 25.20%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Philippines [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 5.70%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Euro Zone [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 1.20%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Chile [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 12.20%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Peru [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 11.20%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Ecuador [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Cumulative Inflation |  |  | 8.40%
Type of Economy |  |  | Non-hyperinflationary
2014-2016 [member] | Uruguay [member] |  |  |
Disclosure of Hyperinflationary Reporting [line items] |  |  |
Type of Economy |  |  | Non-hyperinflationary

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