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Financial Assets and Liabilities - Summary of Categorization of Financial Instruments, Excluding Cash and Cash Equivalents (Detail) - MXN ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financial Assets:
Financial Assets	$ 324,827,314	$ 344,892,278
Financial Liabilities:
Financial Liabilities	633,179,177	648,038,187
Loans and receivables [member]
Financial Assets:
Financial Assets	170,295,834	163,488,725
Loans and receivables [member] | Related parties [member]
Financial Assets:
Financial Assets	1,395,450	2,287,213
Fair value through profit or loss [member]
Financial Assets:
Financial Assets	1,779,953	2,602,680
Fair value through OCI [member]
Financial Assets:
Financial Assets	83,138,508	95,409,260
Equity investments at fair value through OCI and other short term investments [member]
Financial Assets:
Financial Assets	74,517,951	88,428,111
Equity investments at fair value through OCI and other short term investments [member] | Fair value through OCI [member]
Financial Assets:
Financial Assets	68,627,966	88,428,111
Accounts receivable from subscribers distributors contractual assets and other net [member] | Loans and receivables [member]
Financial Assets:
Financial Assets	163,010,399	161,201,512
Financial instruments, class [member]
Financial Assets:
Financial Assets	1,779,953	2,602,680
Financial instruments, class [member] | Fair value through profit or loss [member]
Financial Assets:
Financial Assets	1,779,953	2,602,680
Liability Related to Right of Use of Assets [Member]
Financial Liabilities:
Financial Liabilities	131,467,840	134,148,811
Total Current Assets [Member] | Loans and receivables [member]
Financial Assets:
Financial Assets	170,295,834	163,488,725
Total Current Assets [Member] | Fair value through profit or loss [member]
Financial Assets:
Financial Assets	1,779,953	2,602,680
Total Current Assets [Member] | Fair value through OCI [member]
Financial Assets:
Financial Assets	68,627,966	88,428,111
Debt Instruments At Fair Value Through OCI [Member] | Fair value through OCI [member]
Financial Assets:
Financial Assets	14,510,542	6,981,149
Loans and receivables [member]
Financial Liabilities:
Financial Liabilities	813,946,131	826,435,278
Loans and receivables [member] | Related parties [member]
Financial Liabilities:
Financial Liabilities	6,037,132	7,224,218
Loans and receivables [member] | Equity investments at fair value through OCI and other short term investments [member] | Loans and receivables [member]
Financial Assets:
Financial Assets	5,889,985
Loans and receivables [member] | Debt [Member]
Financial Liabilities:
Financial Liabilities	507,043,629	510,589,480
Loans and receivables [member] | Accounts payable [Member]
Financial Liabilities:
Financial Liabilities	169,397,530	174,472,769
Loans and receivables [member] | Liability Related to Right of Use of Assets [Member]
Financial Liabilities:
Financial Liabilities	131,467,840	134,148,811
Fair value through profit or loss [Member]
Financial Liabilities:
Financial Liabilities	24,499,284	25,331,346
Fair value through profit or loss [Member] | Financial instruments, class [member]
Financial Liabilities:
Financial Liabilities	$ 24,499,284	$ 25,331,346

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

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