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Right of use assets and lease debt - Schedule of detailed information about right-of-use assets and lease liabilities (Detail) - 12 months ended Dec. 31, 2019 $ in Thousands, $ in Millions | MXN ($) | USD ($)
--- | --- | ---
Disclosure Right of use Assets and Lease liabilities [Line Items] |  |
As of January 1, 2019 | $ 0 |
As of January 1, 2019 | 120,078,302 |
Additions and release | 8,015,051 |
Business Combinations | 9,668,507 |
Modifications | 9,492,280 |
Depreciation | (23,593,566) |
Interest expense | 0 |
Payments | 0 |
Translation adjustment | (5,657,351) |
Balance at December 31, 2019 | 118,003,223 | $ 6,262
Interest expense | 7,940,240 |
Payments | (26,765,075) | $ (1,420)
Balance at December 31, 2019 | 120,596,733 |
Towers and sites [member] |  |
Disclosure Right of use Assets and Lease liabilities [Line Items] |  |
As of January 1, 2019 | 94,252,098 |
Additions and release | 6,364,508 |
Business Combinations | 9,668,507 |
Modifications | 7,474,469 |
Depreciation | (17,286,497) |
Interest expense | 0 |
Payments | 0 |
Translation adjustment | (4,370,636) |
Balance at December 31, 2019 | 96,102,449 |
Property [member] |  |
Disclosure Right of use Assets and Lease liabilities [Line Items] |  |
As of January 1, 2019 | 21,075,884 |
Additions and release | 921,542 |
Modifications | 1,288,974 |
Depreciation | (4,941,222) |
Interest expense | 0 |
Payments | 0 |
Translation adjustment | (905,808) |
Balance at December 31, 2019 | 17,439,370 |
Office equipment [member] |  |
Disclosure Right of use Assets and Lease liabilities [Line Items] |  |
As of January 1, 2019 | 4,750,320 |
Additions and release | 729,001 |
Modifications | 728,837 |
Depreciation | (1,365,847) |
Interest expense | 0 |
Payments | 0 |
Translation adjustment | (380,907) |
Balance at December 31, 2019 | 4,461,404 |
Liability related to right-of-use of assets [member] |  |
Disclosure Right of use Assets and Lease liabilities [Line Items] |  |
As of January 1, 2019 | 119,387,660 |
Additions and release | 7,437,621 |
Business Combinations | 10,810,111 |
Modifications | 8,363,045 |
Depreciation | 0 |
Interest expense | 7,940,240 |
Payments | (26,765,075) |
Translation adjustment | (6,576,869) |
Balance at December 31, 2019 | $ 120,596,733 |

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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 -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 53 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_53_h&doctype=Standard -URIDate 2019-03-27 + 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 -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_53_j&doctype=Standard -URIDate 2019-03-27 + Details
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