Capital securities redemption Period.

No definition available.

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- Definition

Consolidated ratio of debt to Ebitda.

+ References

No definition available.

+ Details

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- Definition

Consolidated Ratio Of EBITDA To Interest Paid.

+ References

No definition available.

+ Details

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- Definition

Convertible bonds

+ References

No definition available.

+ Details

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- Definition

Number of undrawn revoloving syndicated facilities.

+ References

No definition available.

+ Details

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- Definition

Percentage of leverage for equity credit.

+ References

No definition available.

+ Details

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- Definition

Percentage of Shares outstanding.

+ References

No definition available.

+ Details

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- Definition

Shares selling price per share.

+ References

No definition available.

+ Details

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- Definition

Tax withholding percentage.

+ References

No definition available.

+ Details

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- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard
-URIDate 2018-03-16

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- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2018-01-01
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- Definition

The maturity of borrowings. [Refer: Borrowings]

+ References

+ Details

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- Definition

The currency in which the borrowings are denominated. [Refer: Borrowings]

+ References

+ Details

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- Definition

The weighted average of interest and other costs that an entity incurs in connection with the borrowing of funds applicable to the borrowings of the entity that are outstanding during the period, other than borrowings made specifically for the purpose of obtaining a qualifying asset. [Refer: Weighted average [member]; Borrowings]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

The amount of loans received.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Number 1
-IssueDate 2018-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard
-URIDate 2018-03-16

+ Details

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- Definition

The number of shares issued by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2018-01-01
-Paragraph 106
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-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_106_d&doctype=Standard
-URIDate 2018-03-16

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- Details

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Debt - Additional Information (Detail) € / shares in Units, $ in Thousands, € in Millions, $ in Millions	1 Months Ended	12 Months Ended
	Sep. 30, 2018 MXN ($) shares	Dec. 31, 2018 MXN ($) CreditFacility € / shares shares	Dec. 31, 2017 MXN ($)	Dec. 31, 2018 USD ($) shares	Dec. 31, 2018 EUR (€) shares	Sep. 30, 2018 EUR (€) shares
Disclosure of detailed information about borrowings [line items]
Weighted average cost of borrowed funds		4.31%	4.30%
Borrowings		$ 638,922,453	$ 697,884,899
Number of revolving syndicated credit facilities \| CreditFacility		2
Number of shares delivered \| shares		71,063,212,170		71,063,212,170	71,063,212,170
Investments accounted for using equity method Koninklijke KPN [member]
Disclosure of detailed information about borrowings [line items]
Number of shares delivered \| shares	224,695,844					224,695,844
Percentage of shares outstanding	5.00%
Nominal outstanding amount of bond \| €						€ 750
Sale of share price per share \| € / shares		$ 3.3374
Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 236,548,891	263,998,076
Top of range [member]
Disclosure of detailed information about borrowings [line items]
Consolidated ratio of debt to EBITDA		400.00%
Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Consolidated ratio of EBITDA to interest paid		250.00%
Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 26,213,095	$ 49,148,975
Loan amount	$ 900,000
Borrowings, maturity	2073	2073	2073
Hybrid Notes [member] \| Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 12,407,214	$ 34,443,203
Revolving Syndicated Credit Facility One [member]
Disclosure of detailed information about borrowings [line items]
Loan amount				$ 2,000
Borrowings, maturity		2021
Revolving Syndicated Credit Facility Two [member]
Disclosure of detailed information about borrowings [line items]
Loan amount				2,500
Borrowings, maturity		2019
Syndicated revolving credit facilities [member] \| Telekom Austria [member] \| Euros [member]
Disclosure of detailed information about borrowings [line items]
Loan amount				$ 1,000
Series One Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Loan amount \| €					€ 1,450
Borrowings interest rate		6.375%		6.375%	6.375%
Capital securities beginning redemption period		2018
Borrowings, original currency		Euros
Series Two Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Loan amount \| €					€ 1,450
Borrowings interest rate		6.375%		6.375%	6.375%
Capital securities beginning redemption period		2023
Borrowings, original currency		Euros
Series Three Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Loan amount				$ 550
Borrowings interest rate		6.375%		6.375%	6.375%
Capital securities beginning redemption period		2020
Borrowings, original currency		Sterling pounds
Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Percentage of leverage for equity credit		50.00%	50.00%
Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 29,651,000	$ 31,364,000
Lines of credit [member] \| Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 5,526,850
Borrowings, maturity		2019
Lines of credit [member] \| Top of range [member] \| Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		0.00%		0.00%	0.00%
Lines of credit [member] \| Bottom of range [member] \| Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		(0.10%)		(0.10%)	(0.10%)
Mexico [member]
Disclosure of detailed information about borrowings [line items]
Commissions or the reimbursements for Mexican tax withholdings		4.90%	4.90%