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Leases - Schedule of right-of-use assets (Detail) - 6 months ended Jun. 30, 2019 $ in Millions, $ in Millions | MXN ($) | USD ($) | [2]
--- | --- | --- | ---
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Additions |  | $ 3,038 |
Disposals |  | (255) |
Remeasurements |  | 1,053 |
Depreciation |  | (3,717) |
Effects of changes in foreign exchange rates |  | (32) |
Ending balance | [1] | 50,307 | $ 2,619
At cost [member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Beginning balance |  | 50,220 |
Real estate [member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Additions |  | 2,955 |
Disposals |  | (250) |
Remeasurements |  | 1,053 |
Depreciation |  | (3,531) |
Effects of changes in foreign exchange rates |  | (5) |
Ending balance |  | 49,334 |
Real estate [member] | At cost [member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Beginning balance |  | 49,112 |
Other [member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Additions |  | 83 |
Disposals |  | (5) |
Depreciation |  | (186) |
Effects of changes in foreign exchange rates |  | (27) |
Ending balance |  | 973 |
Other [member] | At cost [member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Beginning balance |  | $ 1,108 |
[1] | The Company initially adopted IFRS 16 at January 1st, 2019 using the modified retrospective method under which the comparative information is not restated. - See Note 2.4.1
[2] | Convenience translation to U.S. dollars ($) - See Note 2.2.3

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- Definition The amount of additions to right-of-use assets. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2019-01-01 -Name IFRS -Number 16 -IssueDate 2018-01-01 -Paragraph 53 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=16&date=2018-03-01&anchor=para_53_h&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2019-01-01 -Name IFRS -Number 16 -IssueDate 2018-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=16&date=2018-03-01&anchor=para_53_j&doctype=Standard -URIDate 2018-03-16 + Details
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