América Móvil, S.A.B. de C.V. (AMX) 20-F 29 Apr 22 2021 FY Annual report (foreign) Financial data

Cover Page

Cover Page	12 Months Ended
	Dec. 31, 2021shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Document Registration Statement	false
Document Annual Report	true
Document Transition Report	false
Document Shell Company Report	false
Entity Registrant Name	AMERICA MOVIL SAB DE CV/
Entity Central Index Key	0001129137
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Address, Country	MX
ICFR Auditor Attestation Flag	true
Document Accounting Standard	International Financial Reporting Standards
Entity Address, Address Line One	Lago Zurich 245
Entity Address, Address Line Two	Plaza Carso / Edificio Telcel
Entity Address, Address Line Three	Colonia Ampliación Granada
Entity Address, City or Town	Mexico City
Entity Address, Postal Zip Code	11529
Entity File Number	1-16269
Entity Incorporation, State or Country Code	O5
Auditor Name	Mancera, S.C.
Auditor Firm ID	1284
Auditor Location	Mexico City, Mexico
Business Contact [Member]
Document Information [Line Items]
Entity Address, Country	MX
City Area Code	5255
Local Phone Number	2581-3700
Contact Personnel Name	Daniela Lecuona Torras
Contact Personnel Email Address	daniela.lecuona@americamovil.com
Contact Personnel Fax Number	2581-4422
Entity Address, Address Line One	Lago Zurich 245
Entity Address, Address Line Two	Plaza Carso / Edificio Telcel, Piso 16
Entity Address, Address Line Three	Colonia Ampliación Granada
Entity Address, City or Town	Mexico City
Entity Address, Postal Zip Code	11529
AA Shares [member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	20,555
A Shares [member]
Document Information [Line Items]
Trading Symbol	AMOV
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding	502
Title of 12(b) Security	A Shares, without par value
L Shares [member]
Document Information [Line Items]
Trading Symbol	AMX
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding	45,582
Title of 12(b) Security	L Shares, without par value
3.625% Senior Notes Due 2029 [Member]
Document Information [Line Items]
Trading Symbol	AMX29
Security Exchange Name	NYSE
Title of 12(b) Security	3.625% Senior Notes Due 2029
2.875% Senior Notes Due 2030 [Member]
Document Information [Line Items]
Trading Symbol	AMX30
Security Exchange Name	NYSE
Title of 12(b) Security	2.875% Senior Notes Due 2030
6.375% Notes Due 2035 [Member]
Document Information [Line Items]
Trading Symbol	AMX35
Security Exchange Name	NYSE
Title of 12(b) Security	6.375% Notes Due 2035
6.125% Notes Due 2037 [Member]
Document Information [Line Items]
Trading Symbol	AMX37
Security Exchange Name	NYSE
Title of 12(b) Security	6.125% Notes Due 2037
6.125% Senior Notes Due 2040 [Member]
Document Information [Line Items]
Trading Symbol	AMX40
Security Exchange Name	NYSE
Title of 12(b) Security	6.125% Senior Notes Due 2040
4.375% Senior Notes Due 2042 [Member]
Document Information [Line Items]
Trading Symbol	AMX42
Security Exchange Name	NYSE
Title of 12(b) Security	4.375% Senior Notes Due 2042
4.375% Senior Notes Due 2049 [Member]
Document Information [Line Items]
Trading Symbol	AMX49
Security Exchange Name	NYSE
Title of 12(b) Security	4.375% Senior Notes Due 2049

Consolidated Statements of Fina

Consolidated Statements of Financial Position $ in Thousands, $ in Millions	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)
Current assets:
Cash and cash equivalents	$ 38,679,891	$ 1,879	$ 35,917,907	[1]
Equity investments at fair value through other comprehensive income (OCI) and other short-term investments	117,703,202	5,718	50,096,051
Accounts receivable:
Subscribers, distributors, recoverable taxes, contract assets and other, net	202,846,597	9,855	207,977,954
Related parties	1,158,611	56	1,391,300
Derivative financial instruments	10,130,806	492	20,928,335
Inventories, net	24,185,310	1,175	30,377,439
Other current assets, net	9,452,252	459	8,993,907
Total current assets	404,156,669	19,634	355,682,893
Non-current assets:
Property, plant and equipment, net	731,196,679	35,523	722,929,631
Intangibles, net	143,225,764	6,958	133,456,967
Goodwill	136,578,194	6,635	143,052,859
Investments in associated companies	3,052,481	148	1,829,760
Deferred income taxes	127,287,934	6,184	115,370,240
Accounts receivable, subscriber, distributors and contract assets, net	6,928,888	337	7,792,863
Other assets, net	39,956,090	1,941	38,415,826
Debt instruments at fair value through other comprehensive income (OCI)	6,894,757	335	4,540,344
Right-of-use assets	90,372,393	4,391	101,976,844
Total assets	1,689,649,849	82,086	1,625,048,227
Current liabilities:
Short-term debt and current portion of long-term debt	145,222,672	7,055	148,083,184
Short-term liability related to right-of-use of assets	27,632,357	1,342	25,067,905
Accounts payable	206,487,681	10,032	186,995,472
Accrued liabilities	54,391,464	2,642	50,291,851
Income tax	33,247,318	1,615	14,644,979
Other taxes payable	26,278,007	1,277	27,969,739
Derivative financial instruments	10,034,508	488	14,230,249
Related parties	4,216,882	205	3,999,916
Deferred revenues	26,501,877	1,288	36,027,383
Total current liabilities	534,012,766	25,944	507,310,678
Non-current-liabilities:
Long-term debt	418,807,430	20,347	480,299,772
Long-term liability related to right-of-use of assets	71,021,868	3,450	84,259,336
Deferred income taxes	49,465,095	2,403	49,067,163
Deferred revenues	2,698,276	131	2,875,467
Asset retirement obligations	16,752,223	814	17,887,991
Employee benefits	142,850,465	6,940	168,230,202
Total non-current liabilities	701,595,357	34,085	802,619,931
Total liabilities	1,235,608,123	60,029	1,309,930,609
Equity:
Capital stock	96,333,432	4,680	96,341,695
Retained earnings:
Prior years	255,267,259	12,402	267,865,420
Profit for the year	192,423,167	9,348	46,852,605
Total retained earnings	447,690,426	21,750	314,718,025
Other comprehensive loss items	(154,388,931)	(7,502)	(160,580,917)
Equity attributable to equity holders of the parent	389,634,927	18,928	250,478,803
Non-controlling interests	64,406,799	3,129	64,638,815
Total equity	454,041,726	22,057	315,117,618
Total liabilities and equity	$ 1,689,649,849	$ 82,086	$ 1,625,048,227
[1]	Restated for discontinued operations.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021MXN ($)$ / shares	Dec. 31, 2021USD ($)$ / shares	Dec. 31, 2020MXN ($)$ / shares	[1]	Dec. 31, 2019MXN ($)$ / shares	[1]
Operating revenues:
Service revenues	$ 714,244,392	$ 34,700	$ 708,483,701		$ 702,961,964
Sales of equipment	141,290,479	6,864	131,223,459		148,521,512
Operating revenues	855,534,871	41,564	839,707,160		851,483,476
Operating costs and expenses:
Cost of sales and services	341,059,662	16,570	334,881,859		348,776,249
Commercial, administrative and general expenses	180,838,412	8,786	191,901,898		195,507,880
Other expenses	4,877,290	237	4,737,626		5,882,276
Depreciation and amortization	162,626,866	7,901	162,682,398		157,518,787
Operating costs and expenses	689,402,230	33,494	694,203,781		707,685,192
Operating income	166,132,641	8,070	145,503,379		143,798,284
Interest income	3,834,827	186	5,062,036		6,284,672
Interest expense	(36,025,312)	(1,750)	(38,661,485)		(37,910,954)
Foreign currency exchange gain (loss), net	(17,045,843)	(828)	(65,366,200)		5,226,071
Valuation of derivatives, interest cost from labor obligations and other financial items, net	(14,250,066)	(692)	1,292,878		(6,997,844)
Equity interest in net result of associated companies	113,918	6	(287,006)		(17,609)
Profit before income tax	102,760,165	4,992	47,543,602		110,382,620
Income tax	28,144,769	1,367	13,509,270		49,914,055
Net profit for the year from continuing operations	74,615,396	3,625	34,034,332		60,468,565
Profit after tax for the year from discontinued operations	121,710,718	5,913	16,992,625		9,844,889
Net profit for the year	196,326,114	9,538	51,026,957		70,313,454
Net profit for the year attributable to:
Equity holders of the parent from continuing operations	70,712,449	3,435	29,859,980		57,886,001
Equity holders of the parent from discontinued operations	121,710,718	5,913	16,992,625		9,844,889
Non-controlling interests	3,902,947	190	4,174,352		2,582,564
Net profit for the year	$ 196,326,114	$ 9,538	$ 51,026,957		$ 70,313,454
Basic and diluted earnings per share attributable to equity holders of the parent from continuing operations | (per share)	$ 1.07	$ 0.05	$ 0.45		$ 0.88
Basic and diluted earnings per share attributable to equity holders of the parent from discontinued operations | (per share)	$ 1.85	$ 0.09	$ 0.26		$ 0.15
Net other comprehensive loss that may be reclassified to profit or loss in subsequent years:
Effect of translation of foreign entities from continuing operations	$ (7,134,153)	$ (347)	$ (11,515,297)		$ (35,536,252)
Effect of translation of foreign entities from discontinued operations	(829,163)	(40)
Items that will not be reclassified to (loss) or profit in subsequent years:
Re-measurement of defined benefit plan, net of deferred taxes	11,261,896	547	(10,299,558)		(29,535,672)
Unrealized (loss) gain on equity investments at fair value, net of deferred taxes	4,560,869	222	(1,952,414)		883,409
Revaluation surplus, net of deferred taxes	0	0	77,230,031
Total other comprehensive (loss) income items for the year, net of deferred taxes	7,859,449	382	53,462,762		(64,188,515)
Total comprehensive (loss) income for the year	204,185,563	9,920	104,489,719		6,124,939
Comprehensive income for the year attributable to:
Equity holders of the parent from continuing operations	202,418,502	9,834	86,150,118		5,450,679
Non-controlling interests	1,767,061	86	18,339,601		674,260
Total comprehensive (loss) income for the year	204,185,563	9,920	104,489,719		6,124,939
Comprehensive income for the period:
Net comprehensive (loss) income from continuing operations	82,474,845	4,007	87,497,094		(3,719,950)
Net comprehensive income from discontinued operations	121,710,718	5,913	16,992,625		9,844,889
Total comprehensive (loss) income for the year	$ 204,185,563	$ 9,920	$ 104,489,719		$ 6,124,939
[1]	Restated for discontinued operations.

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity $ in Thousands, $ in Millions	MXN ($)		USD ($)	Capital stock [member]MXN ($)	Legal reserve [member]MXN ($)	Retained earnings [member]MXN ($)	Unrealized (loss) gain on equity investment at fair value [member]MXN ($)	Re-measurements of defined benefit plans [member]MXN ($)	Cumulative translation adjustment [member]MXN ($)	Revaluation surplus [member]MXN ($)	Total equity attributable to equity holders of the parent [member]MXN ($)	Non- controlling interests [member]MXN ($)
Beginning balance at Dec. 31, 2018	$ 245,872,422			$ 96,338,378	$ 358,440	$ 236,897,045	$ (9,812,984)	$ (74,427,934)	$ (53,357,300)		$ 195,995,645	$ 49,876,777
Net profit for the year	70,313,454	[1]				67,730,890					67,730,890	2,582,564
Unrealized gain on equity and debt investments at fair value, net of deferred taxes	883,409						883,409				883,409
Remeasurement of defined benefit plan, net of deferred taxes	(29,535,672)	[1]						(29,153,554)			(29,153,554)	(382,118)
Effect of translation of foreign entities	(35,536,252)								(34,010,066)		(34,010,066)	(1,526,186)
Total comprehensive (loss) income for the year	6,124,939	[1]				67,730,890	883,409	(29,153,554)	(34,010,066)		5,450,679	674,260
Dividends declared	(24,580,113)					(23,106,823)					(23,106,823)	(1,473,290)
Repurchase of shares	(427,328)			(116)		(427,212)					(427,328)
Other acquisitions of non-controlling interests	(83,055)					(2,214)					(2,214)	(80,841)
Ending balance (Restated balance [member]) at Dec. 31, 2019	226,906,865			96,338,262	358,440	281,091,686	(8,929,575)	(103,581,488)	(87,367,366)		177,909,959	48,996,906
Net profit for the year	51,026,957	[1]				46,852,605					46,852,605	4,174,352
Unrealized gain on equity and debt investments at fair value, net of deferred taxes	(1,952,414)						(1,952,414)				(1,952,414)
Remeasurement of defined benefit plan, net of deferred taxes	(10,299,558)	[1]						(10,026,454)			(10,026,454)	(273,104)
Effect of translation of foreign entities	(11,515,297)								(13,558,774)		(13,558,774)	2,043,477
Revaluation surplus, net of deferred taxes	77,230,031									$ 64,835,155	64,835,155	12,394,876
Total comprehensive (loss) income for the year	104,489,719	[1]				46,852,605	(1,952,414)	(10,026,454)	(13,558,774)	64,835,155	86,150,118	18,339,601
Dividends declared	(27,021,864)					(25,161,564)					(25,161,564)	(1,860,300)
Stock dividend	17,058,657			4,650		17,054,007					17,058,657
Repurchase of shares	(5,211,097)			(1,217)		(5,209,880)					(5,211,097)
Other acquisitions of non-controlling interests	(1,104,662)					(267,270)					(267,270)	(837,392)
Ending balance at Dec. 31, 2020	315,117,618			96,341,695	358,440	314,359,584	(10,881,989)	(113,607,942)	(100,926,140)	64,835,155	250,478,803	64,638,815
Net profit for the year	196,326,114		$ 9,538			192,423,167					192,423,167	3,902,947
Unrealized gain on equity and debt investments at fair value, net of deferred taxes	4,560,869						4,560,869				4,560,869
Remeasurement of defined benefit plan, net of deferred taxes	11,261,896		547					11,100,835			11,100,835	161,061
Effect of translation of foreign entities	(7,134,153)								(2,514,992)	(2,322,214)	(4,837,206)	(2,296,947)
Discontinued operations	(829,163)								(829,163)		(829,163)
Transfer of revaluation surplus						3,803,349				(3,803,349)
Total comprehensive (loss) income for the year	204,185,563		9,920			196,226,516	4,560,869	11,100,835	(3,344,155)	(6,125,563)	202,418,502	1,767,061
Dividends declared	(28,560,471)					(26,640,797)					(26,640,797)	(1,919,674)
Repurchase of shares	(36,761,029)			(8,263)		(36,752,766)					(36,761,029)
Other acquisitions of non-controlling interests	60,045					139,448					139,448	(79,403)
Ending balance at Dec. 31, 2021	$ 454,041,726		$ 22,057	$ 96,333,432	$ 358,440	$ 447,331,985	$ (6,321,120)	$ (102,507,107)	$ (104,270,295)	$ 58,709,592	$ 389,634,927	$ 64,406,799
[1]	Restated for discontinued operations.

Consolidated Statements of Cash

Consolidated Statements of Cash Flows $ in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2021MXN ($)		Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)		Dec. 31, 2019MXN ($)
Operating activities
Profit before income tax from continuing operations		$ 102,760,165		$ 4,992	$ 47,543,602	[1]	$ 110,382,620	[1]
Profit before income tax from discontinued operations		150,576,681		7,316	19,849,507	[1]	10,964,368	[1]
Profit before income tax		253,336,846		12,308	67,393,109	[1]	121,346,988	[1]
Items not requiring the use of cash:
Depreciation property, plant and equipment and right-of-use assets		139,211,403		6,763	143,108,182	[1]	137,867,698	[1]
Amortization of intangible and other assets		23,415,463		1,138	19,574,216	[1]	19,651,089	[1]
Equity interest in net (loss) income of associated companies		(113,918)		(6)	287,006	[1]	17,609	[1]
(Gain) Loss on sale of property, plant and equipment		(6,849,699)		(333)	257,330	[1]	119,272	[1]
Net period cost of labor obligations		18,688,374		908	18,085,954	[1]	16,609,565	[1]
Foreign currency exchange loss (income), net		14,523,412		706	59,923,928	[1]	(7,250,635)	[1]
Interest income		(3,834,827)		(186)	(5,062,036)	[1]	(6,284,672)	[1]
Interest expense		36,025,312		1,750	38,661,485	[1]	37,910,954	[1]
Employee profit sharing		3,130,722		152	2,066,066	[1]	1,618,695	[1]
Gain (Loss) in valuation of derivative financial instruments, capitalized interest expense and other, net		5,246,476		255	(13,678,083)	[1]	(9,202,167)	[1]
Gain on net monetary positions		(4,876,842)		(237)	(3,262,512)	[1]	(4,267,194)	[1]
Gain on sale of subsidiary		(132,821,709)		(6,453)
Working capital changes:
Subscribers, distributors, recoverable taxes, contract assets and other, net		6,883,270		334	3,189,136	[1]	7,422,351	[1]
Prepaid expenses		(890,729)		(43)	(160,082)	[1]	8,860,172	[1]
Related parties		449,655		22	421,337	[1]	476,671	[1]
Inventories		5,756,325		280	10,402,117	[1]	(463,461)	[1]
Other assets		(9,802,727)		(476)	(2,650,867)	[1]	(6,560,640)	[1]
Employee benefits		(27,223,091)		(1,323)	(18,795,532)	[1]	(20,224,276)	[1]
Accounts payable and accrued liabilities		9,946,257		483	11,247,681	[1]	(15,730,804)	[1]
Employee profit sharing paid		(1,922,029)		(93)	(2,436,223)	[1]	(2,187,316)	[1]
Financial instruments and other		(1,664,465)		(81)	2,606,938	[1]	(1,774,932)	[1]
Deferred revenues		(9,257,456)		(450)	1,958,553	[1]	1,237,894	[1]
Interest received		2,665,854		130	3,946,110	[1]	1,008,076	[1]
Income taxes paid		(60,535,903)		(2,942)	(61,366,231)	[1]	(41,418,114)	[1]
Cash flows from discontinued operating		(1,304,336)		(63)	5,109,961	[1]	(4,504,355)	[1]
Net cash flows provided by operating activities		258,181,638		12,543	280,827,543		234,278,468
Investing activities
Purchase of property, plant and equipment		(145,279,359)		(7,058)	(108,866,816)	[1]	(132,834,246)	[1]
Acquisition of intangibles		(12,791,580)		(621)	(20,647,571)	[1]	(18,962,856)	[1]
Dividends received		2,628,600		128	2,122,826	[1]	1,773,336	[1]
Proceeds from sale of plant, property and equipment		7,215,177		351	162,060	[1]	344,924	[1]
Acquisition of businesses, net of cash acquired		0		0	(152,896)	[1]	(13,330,651)	[1]
Partial sale of shares of associated company		199,158		10	601,509	[1]	36,478	[1]
Investments in associate companies	[1]				(64,341)		(56,985)
Sale of shares		75,518,886		3,669
Short-term investments		(3,361,507)		(163)	(8,671,662)	[1]
Cash flows from discontinued investing		(650,319)		(32)	(40,602)	[1]	(50,089)	[1]
Net cash flows used in investing activities		(76,520,944)		(3,716)	(135,557,493)	[1]	(163,080,089)	[1]
Financing activities
Loans obtained		93,675,127		4,551	277,515,598	[1]	118,082,256	[1]
Repayment of loans		(152,029,408)		(7,388)	(330,607,399)	[1]	(109,808,816)	[1]
Payment of liability related to right-of-use of assets		(30,544,750)		(1,484)	(29,623,565)	[1]	(26,765,075)	[1]
Interest paid		(23,884,410)		(1,160)	(28,421,734)	[1]	(28,046,695)	[1]
Repurchase of shares		(36,745,743)		(1,785)	(5,076,119)	[1]	(435,713)	[1]
Dividends paid		(27,829,345)		(1,352)	(9,592,253)	[1]	(24,248,145)	[1]
Acquisition of non-controlling interests		(7,720)			(1,104,662)	[1]	(83,055)	[1]
Net cash flows used in financing activities		(177,366,249)		(8,618)	(126,910,134)	[1]	(71,305,243)	[1]
Net (decrease) gain in cash and cash equivalents		4,294,445		209	18,359,916	[1]	(106,864)	[1]
Adjustment to cash flows due to exchange rate fluctuations, net		(1,532,461)		(74)	(2,187,665)	[1]	(1,807,442)	[1]
Cash and cash equivalents at beginning of the year		35,917,907	[1]	1,744	19,745,656	[1]	21,659,962	[1]
Cash and cash equivalents at end of the year		38,679,891		1,879	35,917,907	[1]	19,745,656	[1]
Non-cash transactions related to:
Acquisitions of property, plant and equipment in accounts payable at end year		18,385,498		893	3,063,081	[1]	19,673,706	[1]
Revaluation surplus	[1]				107,152,628
Non-cash transactions		$ 18,385,498		$ 893	$ 110,215,709	[1]	$ 19,673,706	[1]
[1]	Restated for discontinued operations.

Description of the Business and

Description of the Business and Relevant Events	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Description of the Business and Relevant Events	1. Description of the Business and Relevant Events I. Corporate Information América Móvil, S.A.B. de C.V. and subsidiaries (hereinafter, the “Company”, “América Móvil” or “AMX”) was incorporated under laws of Mexico on September 25, 2000. The Company provides telecommunications services in 24 countries throughout Latin America, the United States, the Caribbean and Europe. These telecommunications services include mobile and fixed-line voice services, wireless and fixed data services, internet access and Pay TV, over the top and other related services. The Company also sells equipment, accessories and computers. • Voice services provided by the Company, both wireless and fixed, mainly include the following: airtime, local, domestic and international long-distance services, and network interconnection services. • Data services include value added, corporate networks, data and Internet services. • Pay TV represents basic services, as well as pay per view and additional programming and advertising services. • AMX provides other related services to advertising in telephone directories, publishing and call center services. • The Company also provides video, audio and other media content that is delivered through the internet directly from the content provider to the end user. In order to provide these services, América Móvil has licenses, permits and concessions (collectively referred to herein as “licenses”) to build, install, operate and exploit public and/or private telecommunications networks and provide miscellaneous telecommunications services (mostly mobile and fixed voice and data services) and to operate frequency bands in the radio-electric spectrum for point-to-point and point-to-multipoint microwave links. The Company holds licenses in the 24 countries where it has networks, and such licenses have different dates of expiration through 2056. Certain licenses require the payment to the respective governments of a share in sales determined as a percentage of revenues from services under concession. The percentage is set as either a fixed rate or in some cases based on certain size of the infrastructure in operation. The corporate offices of América Móvil are located in Mexico City, Mexico, at Lago Zurich 245, Colonia Ampliación Granada, Delegación Miguel Hidalgo, 11529, Mexico City, Mexico. The accompanying consolidated financial statements were approved for their issuance by the Company’s Chief Financial Officer on April 20, 2022, and subsequent events have been considered through that date. II. Relevant events in 2021 a) In September 2021, the Company entered into an agreement with Cable & Wireless Panama, S.A. an affiliate of Liberty Latin America LTD., to sell our 100% interest in Claro Panama, S.A. The agreed purchase price is Us$200 million on a cash/debt free basis. The closing of the transaction is subject to customary conditions for this type of transactions, including obtaining required governmental approvals. b) In September 2021, the Company announced that shareholders representing approximately 98% of our capital stock approved the spin-off of approximately 36,000 telecommunications towers and other associated passive infrastructure deployed in 14 countries in Latin America. The spin-off is subject to customary conditions and adjustments for corporate reorganizations and shall comply with applicable requirements under the laws of Mexico and the jurisdictions where the telecommunications towers are located. c) In September 2021, Liberty Latin America and América Móvil announced an agreement to combine their respective Chilean operations, VTR and Claro Chile, to form a 50:50 joint venture. The proposed transaction combines the complementary operations of VTR, a leading provider of high-speed consumer fixed products, such as broadband and Pay TV services, where it connects close to 3 million subscribers nationwide, and Claro Chile, one of Chile’s leading telecommunications service providers with over 6.5 million mobile customers, to create a business with greater scale, product diversification, and a capital structure that will enable significant investment for fixed fiber footprint expansion and to be at the forefront of 5G mobile delivery. Completion of the transaction is subject to certain customary closing conditions, including regulatory approvals, and is expected to close in the second half of 2022. d) On November 23, 2021, the Company completed the sale of TracFone Wireless to Verizon Communications. The Company received US$3,625.7 million in cash and 57,596,544 shares of Verizon stock which had a closing price on that date of 51.54 dollars per share. Verizon has asserted post-closing claims under the adjustments and other provisions of this agreement, which may result in additional payments by us . Subject to TracFone continuing to achieve certain operating metrics (earn-out), Verizon shall pay up to million in future cash consideration within two years from that date. See Note 2Ac. Effects of the COVID-19 Pandemic The unprecedented health crisis arising from the COVID-19 pandemic has resulted in a severe global economic downturn and has caused significant volatility, uncertainty, and disruption. The Company continues to closely monitor the evolution of the COVID-19 pandemic in the countries where it operates to take preventive measures to ensure the continuity of operations and safeguard the health and safety of personnel and customers. During 2021, there were lockdowns and other measures implemented to control the spread of COVID-19 in the the the the Company manufacturers were able to respond to increased handset orders. The to pre-pandemic levels in 2022.

Basis of Preparation of the Con

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices	12 Months Ended
	Dec. 31, 2021
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Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices	2. Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices a) Basis of preparation The accompanying consolidated financial statements have been prepared in conformity with International Financial Reporting Standards, as issued by the International Accounting Standards Board (“IASB”) (hereafter referred to as IFRS). The consolidated financial statements have been prepared on the historical cost basis, except for the derivative financial instruments, the mobile telecommunications towers, the trust assets of post-employment and other employee benefit plans and the investments in equity at fair value through other comprehensive income (OCI), which are presented at their market value. Effective July 1, 2018, the Argentinian economy has been considered to be hyperinflationary in accordance with the criteria in IAS 29 “Financial Reporting in Hyperinflationary Economies” (“IAS 29”). Accordingly, for the Argentinian subsidiaries, we have included adjustments for hyperinflation and reclassifications as is required by the standard for purposes of presentation of IFRS in the consolidated financial statements. The preparation of these consolidated financial statements under IFRS requires the use of critical estimates and assumptions that affect the amounts reported for certain assets, liabilities, income and expenses, including the main impact generated by the COVID-19 pandemic and the potential effect on the amounts disclosed in the consolidated financial statements. It also requires that management exercise judgment in the application of the Company’s accounting policies. Actual results could differ from these estimates and assumptions. The Mexican peso is the functional currency of the Company’s Mexican operations and the consolidated reporting currency of the Company. i) Changes in Accounting Policies and Disclosures As of December 31, 2020, the company changed its accounting policy to record the value of the passive infrastructure (towers) of its subsidiaries. With the change, this passive infrastructure was no longer recognized at historical cost and it began to be recognized under the revaluation model (market value). The company considers that the revaluation model represents the actual conditions of the industry of this class of assets and improves its financial position, this allows its shareholders and stakeholders to have the necessary financial information associated with market expectations about this class of assets. ii) Basis of consolidation The consolidated financial statements include the accounts of América Móvil, S.A.B. de C.V. and those subsidiaries over which the Company exercises control. The consolidated financial statements for the subsidiaries were prepared for the same period as the Company´s and applying consistent accounting policies. All of the subsidiary companies operate in the telecommunications sector or related. Subsidiaries are entities over which the Company has control. Control is achieved when the Company has power over the investee, when it is exposed to, or has rights to, variable returns from its involvement with the investee, and has the ability to use its power over the investee to affect the amount of the investor’s returns. Subsidiaries are consolidated on a line-by-line basis from the date which control is achieved by the Company. The Company reassesses whether or not it controls an investee if facts and circumstances indicate that there are changes to one or more of the elements of control. On March 6, 2020, in accordance with a resolution of the Federal Telecommunications Institute (Instituto Federal de Telecomunicaciones or IFT), the subsidiaries Teléfonos de México, S.A.B. de C.V. and Teléfonos del Noroeste, S.A. de C.V. created separate companies related to the wholesale services named Red Nacional Última Milla S.A.P.I. de C.V., Servicios de Telecomunicaciones Ultima Milla, S.A. de C.V. and Red Última Milla del Noroeste S.A.P.I. de C.V. The restructuring of Telmex has no impact o Changes in the Company’s ownership interests in a subsidiary that do not result in the Company losing control over the subsidiary are accounted for as equity transactions. The carrying amounts of the equity attributable to owners of the parent and non-controlling interests are adjusted to reflect the changes in their relative interests in the subsidiary. Any difference between the carrying amount of the non-controlling interests and the fair value of the consideration paid or received in the transaction is recognized directly in the equity attributable to the owners. Subsidiaries are deconsolidated from the date which control ceases. When the Company ceases to have control over a subsidiary, it derecognizes the assets (including any goodwill) and liabilities of the subsidiary at their carrying amounts, derecognizes the carrying amount of non-controlling interests in the former subsidiary and recognizes the fair value of any consideration received from the transaction. Any retained interest in the former subsidiary is then remeasured to its fair value. All intra-Company balances and transactions, and any unrealized gains and losses arising from intra-Company transactions, are eliminated in preparing the consolidated financial statements. Non-controlling interests represent the portion of profits or losses and net assets not held by the Company. Non-controlling interests are presented separately in the consolidated statements of comprehensive income and in equity in the consolidated statements of financial position separately from Company’s own equity. Associates: An associate is an entity over which the Company has significant influence. Significant influence is the power to participate in the financial and operating policy decisions of the investee but does not have control or joint control over those decisions. The Company’s investment in associates includes goodwill identified on acquisition, net of any accumulated impairment losses. The investments in associated companies in which the Company exercises significant influence are accounted for using the equity method, whereby Company recognizes its share in the net profit (losses) and equity of the associate. The results of operations of the subsidiaries and associates are included in the Company’s consolidated financial statements beginning as of the month following their acquisition and its share of other comprehensive income after acquisition is recognized directly in other comprehensive income. The Company assesses at each reporting date whether there is objective evidence that investment in associates is impaired. If so, the Company calculates the amount of impairment as the difference between the recoverable amount of the associate and its carrying value. The equity interest in the most significant subsidiaries at December 31, 2020 and 2021 is as follows: Company name Country Equity 2020 2021 Subsidiaries: América Móvil B.V. a) Netherlands 100.0 % 100.0 % Compañía Dominicana de Teléfonos, S.A. (“Codetel”) b) Dominican Republic 100.0 % 100.0 % Sercotel, S.A. de C.V. a) Mexico 100.0 % 100.0 % Radiomóvil Dipsa, S.A. de C.V. and subsidiaries (“Telcel”) b) Mexico 100.0 % 100.0 % Puerto Rico Telephone Company, Inc. b) Puerto Rico 100.0 % 100.0 % Servicios de Comunicaciones de Honduras, S.A. de C.V. (“Sercom Honduras”) b) Honduras 100.0 % 100.0 % TracFone Wireless, Inc. (“TracFone”) b) c) USA 100.0 % — Claro S.A. (Claro Brasil) b) Brazil 98.2 % 98.2 % NII Brazil Holding S.A.R.L a) Luxembourg 100.0 % 100.0 % Nextel Telecomunicações Ltda b) Brazil 100.0 % 100.0 % Telecomunicaciones de Guatemala, S.A. (“Telgua”) b) Guatemala 99.3 % 99.3 % Claro Guatemala, S.A. b) Guatemala 100.0 % 100.0 % Empresa Nicaragüense de Telecomunicaciones, S.A. (“Enitel”) b) Nicaragua 99.6 % 99.6 % Compañía de Telecomunicaciones de El Salvador, S.A. de C.V. (“CTE”) b) El Salvador 95.8 % 95.8 % Comunicación Celular, S.A. (“Comcel”) b) Colombia 99.4 % 99.4 % Consorcio Ecuatoriano de Telecomunicaciones, S.A. (“Conecel”) b) Ecuador 100.0 % 100.0 % AMX Argentina, S.A. b) Argentina 100.0 % 100.0 % AMX Paraguay, S.A. b) Paraguay 100.0 % 100.0 % AM Wireless Uruguay, S.A. b) Uruguay 100.0 % 100.0 % Claro Chile, S.A. b) Chile 100.0 % 100.0 % América Móvil Perú, S.A.C b) Peru 100.0 % 100.0 % Claro Panamá, S.A. b) Panamá 100.0 % 100.0 % Teléfonos de México, S.A.B. de C.V. b) Mexico 98.8 % 98.8 % Telekom Austria AG b) Austria 51.0 % 51.0 % a) Holding companies b) Operating companies of mobile and fixed services c) On November 23, 2021, this entity was discontinued operations. See Note 2Ac. iii) Basis of translation of financial statements of foreign subsidiaries and associated companies The operating revenues of foreign subsidiaries jointly represent approximately 65%, 66% and 64% of consolidated operating revenues for the years ended December 31, 2019, 2020 and 2021, respectively, and their total assets jointly represent approximately 75% and 70% of consolidated total assets at December 31, 2020 and 2021, respectively. The financial statements of foreign subsidiaries have been prepared under or converted to IFRS in the respective local currency (which is their functional currency) and then translated into the Company´s reporting currency as follows: • all monetary assets and liabilities were translated at the closing exchange rate of the period; • all non-monetary assets and liabilities at the closing exchange rate of the period; • equity accounts are translated at the exchange rate at the time the capital contributions were made and the profits were generated; • revenues, costs and expenses are translated at the average exchange rate of the period, except for the operations of the subsidiaries in Argentina, whose economy is considered hyperinflationary since 2018; • the consolidated statements of cash flows presented using the indirect method were translated using the weighted-average exchange rate for the applicable period (except for Argentina), and the resulting difference is shown in the consolidated statements of cash flows under the heading “Adjustment to cash flows due to exchange rate fluctuations, net”. The basis of translation for the operations of the subsidiaries in Argentina are described: In recent years, the Argentina economy has shown high rates of inflation. Although inflation data has not been consistent in recent years and several indexes have coexisted, inflation in Argentina indicates that the three-year cumulative inflation rate exceeded 100% in 2018, which is one of the quantitative references established by IAS 29. As a result, Argentina was considered a hyperinflationary economy in 2018 and the Company applies hyperinflation accounting to its subsidiary whose functional currency is the Argentine peso for financial information for periods ending on or after July 1, 2018, however the calculation of the cumulative impact was measured as of January 1, 2018. In order to restate for hyperinflation its financial statements, the subsidiary used the series of indices defined by resolution JG No. 539/18 issued by the “Federación Argentina de Consejos Profesionales de Ciencias Económicas” (“FACPCE”), based on the National Consumer Price Index (IPC) published by the Instituto Nacional de Estadística y Censos (INDEC) of the Argentine Republic and the Wholesale Internal Price Index (IPIM) published by FACPCE. The cumulative index at December 31, 2021 is 582.4575, while on an annual inflation for 2021 is 50.9%. The main implications are as follows: • Adjustment of the historical cost of non-monetary assets and liabilities and equity items from their date of acquisition, or the date of inclusion in the consolidated statements of financial position, to the end of the year, in order to reflect changes in the currency’s purchasing power caused by inflation. • The gain on the net monetary position caused by the impact of inflation in the year is included in the consolidated statements of comprehensive income as part of the caption “ Valuation of derivatives, interest cost from labor obligations and other financial items, net ” • All items in the financial statements of the Argentine company are translated at the closing exchange rate, which at December 31, 2020 and 2021 were 0.2371 and 0.2004, respectively, per argentine peso per Mexican peso. The difference resulting from the translation process is recognized in equity in the caption “Effect of translation of foreign entities”. At December 31, 2020 and 2021, the cumulative translation adjustment was Ps. (100,926,140) and Ps. (104,270,295), respectively. b) Revenue recognition The Company revenues are derived principally from providing the following telecommunications services and products: wireless voice, wireless data and value-added services, fixed voice, fixed data, broadband and IT services, Pay TV and over-the-top (“OTT”) services. The Company provides fixed and mobile services. These services are offered independently in contracts with customers or together with the sale of handsets (mobile) under the postpaid model. In accordance with IFRS 15 “Revenues from contracts with customers” The Company with respect to the provided services, it has market observable information, to determine the standalone selling price of the services. On the other hand, in the case of the sale of bundled mobile phones sold (including service and handset) by the Company, the allocation of the sales is done based on their relative standalone selling price of each individual component related to the total bundled price. The result is that more equipment revenue is recognized at the moment of a sale and, therefore, less service revenue from the monthly fee is being recognized under IFRS 15. The services provided by the Company are satisfied over the time of the contract period, given that the customer simultaneously receives and consumes the benefits provided by the Company. Such service bundles, voice and data, accomplish the criteria mentioned in IFRS 15 of being substantially similar and of having the same transfer pattern which is why the Company concluded that the revenue from these different services offered to its customers are considered as a single performance obligation with revenue being recognized over time, except for sales of equipment. Under IFRS 15, for those contracts with customers in which generally the sale of equipment and other electronic equipment is a single performance obligation, the Company recognizes the revenue at the moment when it transfers control to the customer which generally occurs when such goods are delivered. The commissions are considered incremental contract acquisition costs that are capitalized and are amortized over the expected period of benefit, during the average duration of customer contracts. Some subsidiaries have loyalty programs where the Company awards credits customer credit awards referred as “points”. The customer can redeem accrued “points” for awards such as devices, accessories or airtime. The Company provides all awards. The consideration allocated to the award credits is identified as a separate performance obligation; the corresponding liability of the award credits is measured at its fair value. The consideration allocated to award credits amount is recognized as a contract liability until the points are redeemed. Revenue is recognized upon redemption of products by the customer. c) Cost of sales The cost of mobile equipment and computers is recognized at the time the client and distributor receive the device which is when the control is are transferred to the customer. d) Cost of services The cost of services represents the costs incurred to properly deliver the services to the customers, it includes the network operating costs and licenses related costs and is accounted at the moment in which such services are provided. e) Commissions to distributors The Company pays commissions to its distributors different than those that acquire customers. Such commissions are recognized in “commercial, administrative and general expenses” f) Cash and cash equivalents Cash and cash equivalents represent bank deposits and liquid investments with maturities of less than three months. These amounts are stated at cost plus accrued interest, which is similar to their market value. The Company also maintains restricted cash held as collateral to meet certain contractual obligations. Restricted cash is presented as part of “Other assets” within other non-current financial assets given that the restrictions are long-term in nature. See Note 9. g) Equity investments at fair value through OCI and other short/long-term investments Equity investments at fair value through OCI and other short-term investments are primarily composed of equity investments and other short-term financial investments. Amounts are initially recorded at their estimated fair value. Fair value adjustments for equity investments are recorded through other comprehensive income, and other short-term investment. h) Inventories Inventories are initially recognized at historical cost and are valued using the average cost method without exceeding their net realizable value. The estimate of the realizable value of inventories on-hand is based on their age and turnover. i) Business combinations and goodwill Business combinations are accounted for using the acquisition method, which in accordance with IFRS 3, “ Business acquisitions (i) Identify the acquirer (ii) Determine the acquisition date (iii) Value the acquired identifiable assets and assumed liabilities (iv) Recognize the goodwill or a bargain purchase gain For acquired subsidiaries, goodwill represents the difference between the purchase price and the fair value of the net assets acquired at the acquisition date. The investment in acquired associates includes goodwill identified on acquisition, net of any impairment loss. Goodwill is reviewed annually to determine its recoverability or more often if circumstances indicate that the carrying value of the goodwill might not be fully recoverable. The possible loss of value in goodwill is determined by analyzing the recovery value of the cash generating unit (or the group thereof) to which the goodwill is associated at the time it was originated. If this recoverable amount is lower than the carrying value, an impairment loss is charged to the results of operations. The recoverable amount is determined based on the higher of fair value less cost of disposal or value in use. For the years ended December 31, 2019, 2020 and 2021, no impairment losses were recognized for goodwill. j) Property, plant and equipment i) Property, plant and equipment are recorded at acquisition cost, net of accumulated depreciation; except for the passive infrastructure of telecommunications towers, which are recognized under the revaluation model as of December 31, 2020. Depreciation is computed on the cost of assets using the straight line method, based on the estimated useful lives of the related assets, beginning the month after they become available for use. Borrowing costs that are incurred for general financing for construction in progress for periods exceeding six months are capitalized as part of the cost of the asset. During the years ended December 31, 2019, 2020 and 2021, borrowing costs that were capitalized amounted to Ps. 2,233,358, Ps. 1,771,613 and Ps.1,527,259 respectively. In addition to the purchase price and costs directly attributable to preparing an asset in terms of its physical location and condition for operating as intended by management, when required, the cost also includes the estimated costs of dismantling and removal of the asset and for restoration of the site where it is located. See Note 16c. The passive infrastructure of telecommunications towers will be recorded at revalued value, which is its fair value at the time of revaluation less accumulated depreciation; if there is any loss or impairment, it must also be considered within its value. The revaluations will be calculated with sufficient regularity to ensure that the book value, every time, does not differ significantly from that which could be determined using the fair value at the end of the reporting period. The increase resulting from a revaluation is recorded in other comprehensive income (OCI) and is accumulated in equity as a revaluation surplus. To the extent that there is a decrease in revaluation, it will be recognized in profit or loss, except to the extent that it compensates for an existing surplus on the same asset. An annual transfer of the asset revaluation surplus and accumulated earnings is made to the extent that the asset is used, therefore, the surplus is equal to the difference between the depreciation calculated on the revalued value and the one calculated according to its original cost. These transfers do not record in the results for the period. A total transfer of the surplus may be made when the entity disposes of the asset. ii) The net book value of property, plant and equipment is removed from the consolidated statements of financial position at the time the asset is sold or when no future economic benefits are expected from its use or sale. Any gains or losses on the sale of property, plant and equipment represent the difference between net proceeds of the sale and the net book value of the item at the time of sale. These gains or losses are recognized as either other operating income or other operating expenses upon sale. iii) The Company periodically assesses the residual values, useful lives and depreciation methods associated with its property, plant and equipment. If necessary, the effects of any changes in accounting estimates is recognized prospectively, at the closing of each period, in accordance with IAS 8, “ Accounting Policies, Changes in Accounting Estimates and Errors For property, plant and equipment made up of several components with different useful lives, the major individual components are depreciated over their individual useful lives. Maintenance costs and repairs are expensed as incurred. Annual depreciation rates are as follows: Network infrastructure 5%-33% Buildings and leasehold improvement 2%-33% Other assets 10%-50% iv) The carrying value of property, plant and equipment is reviewed if there are indicators of impairment in such assets. If an asset’s recovery value is less than the asset’s net carrying value, the difference is recognized as an impairment loss. During the years ended December 31, 2019, 2020 and 2021, no impairment losses were recognized. v) Spare parts for network operation are recognized at cost. The valuation of inventory for network considered obsolete, defective or slow-moving, is reduced to their estimated net realizable value. The estimate of the recovery value of inventories is based on their age and turnover. k) Intangibles i) Licenses Licenses to operate wireless telecommunications networks granted by the governments of the countries in which the Company operates are recorded at acquisition cost or at fair value at their acquisition date, net of accumulated amortization. Certain licenses require payments to the governments, such payments are recognized in the cost of service and equipment. The licenses that in accordance with government requirements are categorized as automatically renewable, for a nominal cost and with substantially consistent terms, are considered by the Company as intangible assets with an indefinite useful life. Accordingly, they are not amortized. Licenses are amortized when the Company does not have a basis to conclude that they are indefinite lived. Licenses are amortized using the straight-line method over a period ranging from 3 to 30 years, which represents the usage period of the assets. The Company has conducted an internal analysis on the applicability of the International Financial Reporting Interpretation Committee (“IFRIC”) No. 12 (Service Concession Agreements) and has concluded that its concessions are outside the scope of IFRIC 12. To determine the applicability of IFRIC 12, the Company analyzes each concession or group of similar concessions in a given jurisdiction. As a threshold matter, the Company identifies those government concessions that provide for the development, financing, operation or maintenance of infrastructure used to render a public service, and that set out performance standards, mechanisms for adjusting prices and arrangements for arbitrating disputes. With respect to those services, the Company evaluates whether the grantor controls or regulates (i) what services the operator must provide, (ii) to whom it must provide them and (iii) the applicable price (the “Services Criterion”). In evaluating whether the applicable government, as grantor, controls the price at which the Company provides its services, the Company looks at the terms of the concession agreement according to all applicable regulations. If the Company determines that the concession under analysis meets the Services Criterion, then the Company evaluates whether the grantor would hold a significant residual interest in the concession’s infrastructure at the end of the term of the arrangement. ii) Trademarks Trademarks acquired are measured on initial recognition at cost. The cost of trademarks acquired in a business combination is their fair value at the date of acquisition. The useful lives of trademarks are assessed as either definite or indefinite. Trademarks with finite useful lives are amortized using the straight-line method over a period ranging from 1 to 10 years. Trademarks with indefinite useful lives are not amortized but are tested for impairment annually at the cash generating unit level. The assessment of indefinite life is reviewed annually to determine whether the indefinite life continues to be supportable, if not, the change in useful life from indefinite to definite is made on a prospective basis. iii) Irrevocable rights of use Irrevocable rights of use are recognized according to the amount paid for the right and are amortized over the period in which they are granted. The carrying values of the Company’s licenses and trademarks are reviewed annually and whenever there are indicators of impairment in the value of such assets. When an asset’s recoverable amount, which is the higher of the asset’s fair value, less disposal costs and its value in use (the present value of future cash flows), is less than the asset’s carrying value, the difference is recognized as an impairment loss. iv) Customer relationships The value of customer relations is determined and valued at the time that a new subsidiary is acquired, as determined by the Company with the assistance of independent appraisers and is amortized over a 5-year period. During the years ended December 31, 2019, 2020 and 2021, no significant impairment losses were recognized for licenses, trademarks, irrevocable rights of use or customer relationships. l) Impairment in the value of long-lived assets The Company assesses the existence of indicators of impairment in the carrying value of long-lived assets, investments in associates, goodwill and intangible assets according to IAS 36 “ Impairment of assets In the estimation of impairments, the Company uses the strategic plans established for the separate cash-generating units to which the assets are assigned. Such strategic plans generally cover a period from 3 to 5 years. For longer periods, beginning in the fifth year, projections are based on such strategic plans while applying a constant or declining expected perpetual growth rate. Key assumptions used in value in use calculations The forecasts are made in real terms (net of inflation) and in the functional currency of the subsidiary as of December 31, 2021. Financial forecasts, premises and assumptions are similar to what any other market participant in similar conditions would consider , including the impact of the COVID-19 pandemic. Local synergies, that any other market participant would not have taken into consideration to prepare similar forecasted financial information, have not been included. The assumptions used to develop the financial forecasts were validated for each of the cash generating units (“CGUs”), typically identified by country and by service (in the case of Mexico) taking into consideration the following: • Current subscribers and expected growth. • Type of subscribers (prepaid, postpaid, fixed line, multiple services) • Market environment and penetration expectations • New products and services • Economic environment of each country • Expenses for maintaining the current assets • Investments in technology for expanding the current assets • Market consolidation and synergies The foregoing forecasts could differ from the results obtained through time; however, the Company prepares its estimates based on the current situation of each of the CGUs. The recoverable amounts are based on value in use. The value in use is determined based on the method of discounted cash flows. The key assumptions used in projecting cash flows are: • Margin on EBITDA is determined by dividing EBITDA (operating income plus depreciation and amortization) by total revenues. • Margin on CAPEX is determined by dividing capital expenditures (“CAPEX”) by total revenues. • Pre-tax weighted average cost of capital (“WACC”) is used to discount the projected cash flows. As discount rate, the Company uses the WACC which was determined for each of the cash generating units and is described in the following paragraphs. The estimated discount rates to perform the IAS 36 “ Impairment of assets These discount rates do not include inflation. The discount rates represent the current market assessment of the risks specific to each CGU, taking into consideration the time value of money and individual risks of the underlying assets that have not been incorporated in the cash flow estimates. The discount rate calculation is based on the specific circumstances of the Company and its operating segments. The WACC takes into account both debt and equity costs. The cost of equity is derived from the expected return on investment for each GCU. The cost of debt is based on the interest-bearing borrowings the Company is obliged to service. Segment-specific risk is incorporated by applying individual beta factors. The beta factors are evaluated annually based on publicly available market data. Market participant assumptions are important because, not only do they include industry data for growth rates, but also management assesses how the CGU’s position, relative to its competitors, might change over the forecasted period. The most significant forward-looking estimates used for the 2020 and 2021 impairment evaluations are shown below: Average margin on Average margin on Average pre-tax 2020: Europe (7 countries) 32.20% - 40.76% 7.04% - 19.39% 3.88% - 12.02% Brazil (fixed line, wireless and TV) 40.67% 25.36% 9.50% Puerto Rico 23.06% 14.57% 3.53% Dominican Republic 47.57% 13.71% 8.27% Mexico (fixed line and wireless) 32.69% 11.01% 6.03% Ecuador 49.23% 11.14% 17.50% Peru 38.72% 15.43% 4.76% El Salvador 45.92% 21.19% 14.63% Chile 26.34% 13.18% 3.37% Colombia 43.45% 18.19% 6.44% Other countries 10.07% - 47.23% 0.48% - 31.67% 3.42% - 21.85% 2021: Europe (7 countries) 31.60% - 45.32% 7.48% - 24.37% 2.91% - 9.83% Brazil (fixed line, wireless and TV) 41.37% 22.98% 4.62% Puerto Rico 21.54% 14.36% 3.00% Dominican Republic 52.02% 13.86% 5.84% Mexico (fixed line and wireless) 36.21% 15.89% 6.24% Ecuador 44.76% 12.48% 14.48% Peru 36.63% 17.19% 3.99% El Salvador 44.82% 24.25% 10.78% Chile 27.36% 17.98% 2.81% Colombia 43.36% 23.18% 7.18% Other countries 30.55% - 48.52% 4.91% - 30.03% 4.64% - 14.39% Sensitivity to changes in assumptions: The implications of the key assumptions for the recoverable amount are discussed below: Margin on CAPEX- The Company performed a sensitivity analysis by increasing its CAPEX by 5% and maintaining all other assumptions the same , WACC- Additionally, should the Company increase by 50 base points in WACC per CGU and maintain all other assumptions the same, results without impairment. m Right-of-use assets The Company applies a single recognition and measurement approach for all leases, except for short-term leases and leases of low-value assets. The Company recognizes lease liabilities to make lease payments and right-of-use assets representing the right to use the underlying assets. i) Right-of-use assets The Company recognizes right-of-use assets at the commencement date of the lease (i.e., the date the underlying asset is available for use). Right-of-use assets are measured at cost,

Cash and Cash Equivalents

Cash and Cash Equivalents	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Cash and Cash Equivalents	3. Cash and Cash Equivalents Cash and cash equivalents are comprised of short-term deposits with different financial institutions. Cash equivalents only include instruments with purchased maturity of less than three months. The amount includes the amount deposited, plus any interest earned.

Equity and debt investments at

Equity and debt investments at fair value through OCI and other short/long-term investments	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Equity and debt investments at fair value through OCI and other short/long-term investments	4. Equity and debt investments at fair value through OCI and other short/long-term investments As of December 31, 2020 and 2021, equity investments at fair value through OCI and other short-term investments includes an equity investment in KPN for Ps. 50,033,111 and Ps. 56,087,598 Ps. 61,600,578 in December 31, The investment s s During the years ended December 31, 2019, 2020 and 2021, the Company received dividends from KPN for an amount of Ps. 1,742,242 and Ps. 2,119,668 and Ps. 2,628,600, respectively, which are included within “Valuation of derivatives, interest cost from labor obligations, and other financial items, net” in the consolidated statements of comprehensive income. As of December 31, 2020 and 2021 long-term debt instrument at fair value through OCI for Ps. 4,540,344 and Ps. 6,894,757, respectively.

Accounts receivable from subscr

Accounts receivable from subscribers, distributors, recoverable taxes contractual assets and other, net	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Accounts receivable from subscribers, distributors, recoverable taxes contractual assets and other, net	5. Accounts receivable from subscribers, distributors, recoverable taxes contractual assets and other, net a) At December 31, 2020 2021 Subscribers and distributors Ps. 168,758,386 Ps. 157,433,609 Telecommunications carriers for network interconnection and other services 4,914,094 3,968,675 Recoverable taxes 44,557,402 43,734,164 Sundry debtors 12,504,566 15,573,586 Contract assets 29,588,104 30,901,277 Impairment of trade receivables (44,551,735 ) (41,835,826 ) Total net Ps. 215,770,817 Ps. 209,775,485 Non-current subscribers, distributors and contractual assets 7,792,863 6,928,888 Total current subscribers, distributors and contractual assets Ps. 207,977,954 Ps. 202,846,597 b) Changes in the impairment of trade receivables is as follows: For the years ended December 31, 2019 2020 2021 Balance at beginning of year Ps.(40,798,025 ) Ps.(39,480,909 ) Ps.(44,551,735 ) Increases recorded in expenses (16,346,395 ) (19,112,635 ) (10,677,421 ) Write-offs (i) 17,839,957 11,953,227 11,682,343 Business combination (3,265,490 ) (2,066 ) — Translation effect 3,089,044 2,090,648 1,710,987 Balance at end of year Ps.(39,480,909 ) Ps.(44,551,735 ) Ps.(41,835,826 ) (i) Includes discontinued operation of Tracfone. See Note 2Ac. c) The following table shows the aging of accounts receivable at December 31, 2020 and 2021, for subscribers and distributors: Past due Total Unbilled services a-30 days 31-60 days 61-90 days Greater than December 31, 2020 Ps. 168,758,386 Ps. 75,972,811 Ps. 37,439,995 Ps. 5,325,264 Ps. 3,313,835 Ps. 46,706,481 December 31, 2021 Ps. 157,433,609 Ps. 69,082,837 Ps. 35,694,272 Ps. 4,533,604 Ps. 2,645,034 Ps. 45,477,862 d) The following table shows the accounts receivable from subscribers and distributors included in the impairments of trade receivables, as of December 31, 2020 and 2021: Total 1-90 days Greater than December 31, 2020 Ps. 44,551,735 Ps. 4,455,174 Ps. 40,096,561 December 31, 2021 Ps. 41,835,826 Ps. 4,183,583 Ps. 37,652,243 e) An analysis of contract assets and liabilities at December 31, 2020 and 2021 is as follows: 2020 2021 Contract Assets: Balance at the beginning of the year Ps. 34,274,007 Ps. 29,588,104 Additions 27,242,031 31,758,626 Disposals (1,397,714 ) (5,946,487 ) Amortization (29,002,995 ) (25,354,712 ) Translation effect (1,527,225 ) 855,746 Balance at the end of the year Ps. 29,588,104 Ps. 30,901,277 Non-current contract assets Ps. 817,740 Ps. 989,519 Current portion contracts assets Ps. 28,770,364 Ps. 29,911,758

Related Parties

Related Parties	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Related Parties	6. Related Parties a) The following is an analysis of the balances with related parties as of December 31, 2020 and 2021. All of the companies were considered affiliates of América Móvil since the Company’s principal shareholders are either direct or indirect shareholders in the related parties. 2020 2021 Accounts receivable: Sears Roebuck de México, S.A. de C.V. and Subsidiaries Ps. 233,402 Ps. 339,366 Sanborns Hermanos, S.A. 160,116 192,599 Patrimonial Inbursa, S.A. 327,985 145,676 Grupo Condumex, S.A. de C.V. and Subsidiaries 10,038 122,555 Hubard y Bourlon, S.A. de C.V. 437,231 52,026 Claroshop.com, S.A.P.I de C.V. 100,075 40,906 Other 122,453 265,483 Total Ps. 1,391,300 Ps. 1,158,611 2020 2021 Accounts payable: Carso Infraestructura y Construcción, S.A. de C.V. and Subsidiaries Ps. 2,192,405 Ps. 1,273,085 Grupo Condumex, S.A. de C.V. and Subsidiaries 1,054,526 1,709,487 Fianzas Guardiana Inbursa, S.A. de C.V. 241,898 385,287 Claroshop.com, S.A.P.I de C.V. 4,300 247,081 Grupo Financiero Inbursa, S.A.B. de C.V. 234,954 102,314 Seguros Inbursa, S.A. de C.V. 92,173 113,089 Sociedad Financiera Inbursa, S.A. de C.V. — 80,382 PC Industrial, S.A. de C.V. and Subsidiaries 44,198 4,761 Enesa, S.A. de C.V. and Subsidiaries 22,014 9,384 Other 113,448 292,012 Total Ps. 3,999,916 Ps. 4,216,882 For the years ended December 31, 2019, 2020 and 2021, the Company has not recorded any impairment of receivables in connection with amounts owed by related parties. b) For the years ended December 31, 2019, 2020 and 2021, the Company conducted the following transactions with related parties: 2019 2020 2021 Investments and expenses: Construction services, purchases of materials, inventories and property, plant and equipment (i) Ps. 8,573,894 Ps. 7,130,769 Ps. 13,544,289 Insurance premiums, fees paid for administrative and operating services, brokerage services and others (ii) 4,590,620 4,375,113 4,336,133 Other services 1,277,404 1,101,528 1,617,102 Ps. 14,441,918 Ps. 12,607,410 Ps. 19,497,524 Revenues: Service revenues Ps. 538,110 Ps. 608,248 Ps. 714,148 Sales of equipment (iii) 944,697 656,801 7,629,181 Ps. 1,482,807 Ps. 1,265,049 Ps. 8,343,329 i) In 2021, this amount includes Ps. ii) In 2021, this amount includes Ps. iii) In November 2021, a subsidiary of Telmex sold certain tower assets to Telesites, S.A.B. de C.V. iv) The amounts related to payments for tower lease are reflected in Note 15. c) The aggregate compensation paid to the Company’s, directors (including compensation paid to members of the Audit and Corporate Practices Committee), and senior management in 2021 was approximately Ps.5,800 and Ps.85,000, respectively. None of the Company’s directors is a party to any contract with the Company or any of its subsidiaries that provides for benefits upon termination of employment. The Company does not provide pension, retirement or similar benefits to its directors in their capacity as directors. The Company’s executive officers are eligible for retirement and severance benefits required by Mexican law on the same terms as all other employees. d) Österreichische Bundes- und Industriebeteiligungen GmbH (ÖBIB) is considered a related party due to it is a significant non-controlling shareholder in Telekom Austria. Through Telekom Austria, América Móvil is related to the Republic of Austria and its subsidiaries, which are mainly ÖBB Group, ASFINAG Group and Post Group as well as Rundfunk und Telekom Reguliegungs-GmbH, all of which these are related parties. In 2019, 2020 and 2021, none of the individual transactions associated with government agencies or government-owned entities of Austria were considered significant to América Móvil.

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Derivative Financial Instruments	7. Derivative Financial Instruments To mitigate the risks of future increases in interest rates and foreign exchange rates for the servicing of its debt, the Company has entered into derivative contracts in over-the-counter transactions carried out with financial institutions. In 2021 the weighted-average interest rate of the total debt including the impact of interest rate derivatives held by the Company is 3.1% (3.5% and 3.8% in 2020 and 2019, respectively). An analysis of the derivative financial instruments contracted by the Company at December 31, 2020 and 2021 is as follows: At December 31, 2020 2021 Instrument Notional amount in Fair Value Notional amount in Fair Value Assets: Swaps US Dollar – Mexican Peso US$ 3,490 Ps. 16,806,937 US$ 1,890 Ps. 6,881,934 Swaps US Dollar – Euro US$ 150 117,726 US$ 150 307,646 Swaps Yen – US Dollar ¥ 9,750 269,215 ¥ 6,500 119,325 Swaps Pound Sterling – US Dollar £ 1,010 2,237,919 £ 100 99,463 Forwards US Dollar – Mexican Peso US$ 240 39,607 US$ 2,080 321,864 Forwards Mexican Peso – US Dollar — — MX$ 35,419 1,635,087 Forwards Brazilian Real – US Dollar BRL$ 4,193 1,190,292 BRL$ 2,480 127,131 Forwards Euro – US Dollar € 915 266,639 — — Put Option — — € 374 638,347 Total Assets — Ps. 20,928,335 — Ps. 10,130,806 At December 31, 2020 2021 Instrument Notional amount in Fair Value Notional amount in Fair Value Liabilities: Swaps US Dollar – Euro US$ 800 Ps. (4,811,031 ) US$ 800 Ps. (1,270,005 ) Swaps Yen – US Dollar ¥ 3,250 (14,802 ) ¥ 6,500 (119,313 ) Swaps Pound Sterling – Euro £ 640 (3,122,492 ) £ 640 (1,924,941 ) Swap Pound Sterling – US Dollar £ 550 (457,559 ) £ 1,460 (2,117,583 ) Swaps Euro – US Dollar — — € 495 (528,298 ) Swaps Euro – Mexican Peso — — € 750 (680,720 ) Forwards US Dollar – Mexican Peso US$ 3,494 (4,052,852 ) US$ 1,175 (286,937 ) Forwards Brazilian Real – US Dollar BRL$ 1,762 (425,249 ) BRL$ 4,021 (234,822 ) Forwards Euro – US Dollar — — € 815 (1,122,641 ) Forwards US Dollar – Euro — — US$ 8 (1,570 ) Forwards Euro – Mexican Peso € 200 (272,274 ) € 200 (22,182 ) Put option € 374 (1,073,990 ) — — Call option — — € 2,097 (1,725,495 ) Total Liabilities — Ps. (14,230,249 ) — Ps. (10,034,508 ) * Totals may not sum due to rounding. The changes in the fair value of these derivative financial instruments for the years ended December 31, 2019, 2020 and 2021 amounted to a gain (loss) of Ps. The maturities of the notional amount of the derivatives are as follows: Instrument Notional 2022 2023 2024 2025 2026 Thereafter Assets Swaps US Dollar-Mexican Peso US$ — — — — 1,890 Swaps Yen-US Dollar ¥ — — — — 6,500 Swaps US Dollar – Euro US$ — — — — 150 Swaps Pound Sterling – US Dollar £ — — — — 100 Forwards US Dollar-Mexican Peso US$ 2,080 — — — — Forwards Mexican Peso – US Dollar MX$ 35,419 — — — — Forwards Brazilian Real-US Dollar BRL 2,480 — — — — Put Option € — 374 — — — Liabilities Swaps US Dollar-Euro US$ — — — — 800 Swaps Euro – US Dollar € — 320 175 — — Swaps Euro – Mexican Peso US$ — 750 — — — Swaps Yen-US Dollar ¥ — — — — 6,500 Swaps Pound Sterling-Euro £ — — — — 640 Swap Pound Sterling-US Dollar £ — — — — 1,460 Forwards US Dollar – Mexican Peso US$ 1,175 — — — — Forwards Euro – US Dollar € 765 — 50 — — Forwards US Dollar—Euro US$ 8 — — — — Forwards Brazilian Real-US Dollar BRL 4,021 — — — — Forwards Euro – Mexican Peso € 200 — — — — Call option € — — 2,097 — —

Inventories, net

Inventories, net	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Inventories, net	8. Inventories, net An analysis of inventories at December 31, 2020 and 2021 is as follows: 2020 2021 Mobile phones, accessories, computers, TVs, cards and other materials Ps.33,763,086 Ps. Less: Reserve for obsolete and slow-moving inventories (3,385,647 ) (1,946,211 ) Total Ps.30,377,439 Ps. For the years ended December 31, 2019, 2020 and 2021, the cost of inventories recognized in cost of sales was Ps. and respectively

Other assets, net

Other assets, net	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Other assets, net	9. Other assets, net An analysis of other assets at December 31, 2020 and 2021 is as follows: 2020 2021 Current portion: Advances to suppliers (different from PP&E and inventories) Ps. 7,600,644 Ps. 7,474,932 Prepaid insurance 1,300,019 1,749,589 Other 93,244 227,731 Ps. 8,993,907 Ps. 9,452,252 Non-current portion: Recoverable taxes Ps. 11,559,961 Ps. 11,689,094 Prepayments for the use of fiber optics 2,709,358 3,783,496 Judicial Deposits (1) 15,402,840 14,583,504 Prepaid expenses 8,743,667 9,899,996 Total Ps. 38,415,826 Ps. 39,956,090 For the years ended December 31, 2019, 2020 and 2021, amortization expense for other assets was Ps. 318,824, Ps. 213,833 and Ps. 442,098, respectively. (1) Judicial deposits represent cash and cash equivalents pledged in order to fulfill the collateral requirements for tax contingencies mainly in Brazil. As of December 31, 2020 and 2021, the amount for these deposits is Ps. 15,402,840 and Ps. 14,583,504, respectively for Brazil. Based on its evaluation of the underlying contingencies, the Company believes that such amounts are recoverable.

Property, Plant and Equipment,

Property, Plant and Equipment, Net	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Property, Plant and Equipment, Net	10. Property, Plant and Equipment, net a) At December 31, Additions Retirements Business Effect of Depreciation At December 31, Cost Network in operation and equipment Ps. 969,195,936 Ps. 82,992,062 Ps. (13,417,360 ) Ps. 9,572,805 Ps. (57,669,840 ) Ps. — Ps. 990,673,603 Land and buildings 57,130,326 1,530,677 (4,025,222 ) 115,935 (3,950,463 ) — 50,801,253 Other assets 149,809,137 26,881,611 (7,594,735 ) 1,021,051 (7,776,500 ) — 162,340,564 Construction in process and advances plant suppliers (1) 81,092,529 82,640,305 (76,892,011 ) 209,790 (5,511,439 ) — 81,539,174 Spare parts for operation of the network 28,444,529 44,776,904 (36,525,735 ) — (2,462,605 ) — 34,233,093 Total 1,285,672,457 238,821,559 (138,455,063 ) 10,919,581 (77,370,847 ) — 1,319,587,687 Accumulated depreciation Network in operation and equipment 560,005,547 — (24,954,514 ) — (47,778,627 ) 93,097,695 580,370,101 Buildings 8,810,949 — (287,072 ) — (1,386,974 ) 2,330,405 9,467,308 Other assets 76,533,494 — (695,425 ) — (4,754,982 ) 19,249,104 90,332,191 Spare parts for operation of the network 321,747 — (283,986 ) — (79,226 ) 116,182 74,717 Total Ps. 645,671,737 Ps. — Ps. (26,220,997 ) Ps. — Ps. (53,999,809 ) Ps. 114,793,386 Ps. 680,244,317 Net Cost Ps. 640,000,720 Ps. 238,821,559 Ps. (112,234,066 ) Ps. 10,919,581 Ps. (23,371,038 ) Ps. (114,793,386 ) Ps. 639,343,370 At December 31, Additions Retirements Business Revaluation Transfers Effect of Depreciation At December 31, Cost Network in operation and equipment Ps. 990,673,603 Ps. 90,387,449 Ps. (19,574,391 ) Ps. 996,974 Ps. 107,152,628 Ps. (62,050,212 ) Ps. (49,993,808 ) Ps. — Ps. 1,057,592,243 Land and buildings 50,801,253 570,062 (2,853,037 ) — — — 369,300 — 48,887,578 Other assets 162,340,564 17,474,218 (14,454,598 ) 55,848 — — (8,393,187 ) — 157,022,845 Construction in process and advances plant suppliers (1) 81,539,174 59,635,316 (68,661,847 ) 1,099 — — (5,011,829 ) — 67,501,913 Spare parts for operation of the network 34,233,093 30,721,413 (37,829,818 ) — — — (2,328,430 ) — 24,796,258 Total 1,319,587,687 198,788,458 (143,373,691 ) 1,053,921 107,152,628 (62,050,212 ) (65,357,954 ) — 1,355,800,837 Accumulated depreciation Network in operation and equipment 580,370,101 — (25,726,856 ) — — (62,050,212 ) ( 2 (58,055,450 ) 96,729,723 531,267,306 Buildings 9,467,308 — (1,663,796 ) — — — (622,253 ) 1,906,140 9,087,399 Other assets 90,332,191 — (9,317,821 ) — — — (5,120,175 ) 16,549,822 92,444,017 Spare parts for operation of the network 74,717 — (176,131 ) — — — 38,898 135,000 72,484 Total Ps. 680,244,317 Ps. — Ps. (36,884,604 ) Ps. — Ps. — Ps. (62,050,212 ) Ps. (63,758,980 ) Ps. 115,320,685 P s 632,871,206 Net Cost Ps. 639,343,370 Ps. 198,788,458 Ps. (106,489,087 ) Ps. 1,053,921 Ps. 107,152,628 . — Ps. (1,598,974 ) Ps. (115,320,685 ) Ps. 722,929,631 At December 31, Additions Retirements (3) Business Transfers Effect of Depreciation At December 31, Cost Network in operation and equipment Ps. 1,057,592,243 Ps. 89,696,150 Ps. (45,044,049 ) Ps. — Ps. 53,531,590 Ps. (44,061,097 ) Ps. — Ps 1,111,714,837 Land and buildings 48,887,578 784,460 (473,785 ) — 38,250 (1,216,894 ) — 48,019,609 Other assets 157,022,845 10,782,903 (11,994,756 ) — (1,800,756 ) (1,870,104 ) — 152,140,132 Construction in process and advances plant suppliers (1) 67,501,913 83,366,813 (47,178,796 ) — (38,944,421 ) (1,420,843 ) — 63,324,666 Spare parts for operation of the network 24,796,258 46,909,494 (23,108,928 ) — (13,824,767 ) (974,011 ) — 33,798,046 Total 1,355,800,837 231,539,820 (127,800,314 ) — (1,000,104 ) (49,542,949 ) — 1,408,997,290 Accumulated depreciation Network in operation and equipment 531,267,306 — (24,322,904 ) — 638,066 (30,254,288 ) 97,343,878 574,672,058 Buildings 9,087,399 — (219,030 ) — (221,937 ) (738,748 ) 1,941,819 9,849,503 Other assets 92,444,017 — (10,522,319 ) — 549,855 (2,522,458 ) 13,310,584 93,259,679 Spare parts for operation of the network 72,484 — (92,421 ) — — (26,823 ) 66,131 19,371 Total Ps 632,871,206 Ps — Ps. (35,156,674 ) Ps. — Ps. (965,984 ) Ps (33,542,317 ) Ps. 112,662,412 Ps 677,800,611 Net Cost Ps 722,929,631 Ps 231,539,820 Ps (92,643,640 ) Ps. — Ps. (1,966,088 ) Ps. (16,000,632 ) Ps (112,662,412 ) Ps 731,196,679 (1) Construction in progress includes fixed and mobile network facilities as well as satellite developments and fiber optic which is in the process of being installed. (2) This transfer relates to the accumulated depreciation as at the revaluation date that was eliminated against the gross carrying amount of the revalued asset. (3) Includes disposals related to the sale of TracFone. See Note 2Ac. The completion period of construction in progress is variable and depends upon the type of plant and equipment under construction. b) Revaluation of t e The Fair value of the passive infrastructure of telecommunications towers was determined using the “income approach” method through a discounted flow model (DFC) where, among others, inputs such as average rents per tower were used, contract term and discount rates considering market information. As of December 31, 2020 and 2021, date of the revaluation, the fair values of the passive infrastructure of the telecommunications towers were determinate by a valuation specialist with experience in the industry. The complement for the revaluation of the passive infrastructure of the telecommunications towers amounted to Ps. during 2020. For the year ended The information to be disclosed on the fair value measurement for the revalued telecommunications towers is provided in Note 19. 2020 2021 Book value as of December 31, (cost model) Ps. 615,777,003 Ps. 633,024,004 Supplement for change in accounting policy 107,152,628 98,172,675 Book value and fair value as of December 31, (revaluation model) Ps. 722,929,631 Ps. 731,196,679 c) Relevant information related to the computation of the capitalized borrowing costs is as follows: Year ended December 31, 2019 2020 2021 Amount invested in the acquisition of qualifying assets Ps. 50,783,957 Ps. 46,528,232 Ps. 38,573,605 Capitalized interest 2,233,358 1,771,613 1,527,259 Capitalization rate 4.4 % 3.8 % 4.0 % Capitalized interest is being amortized over a period of estimated useful life of the related assets.

Intangible assets, net and good

Intangible assets, net and goodwill	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Intangible assets, net and goodwill	11. Intangible assets, net and goodwill a) For the year ended December 31, 2019 Balance at Acquisitions Acquisitions Disposals and Amortization Effect of Balance at end Licenses and rights of use Ps. 233,478,974 Ps. 13,206,877 Ps. 7,844,339 Ps. 7,286,114 Ps. — Ps. (15,715,442 ) Ps. 246,100,862 Accumulated amortization (130,180,579 ) — — (2,391,624 ) (11,577,160 ) 9,481,480 (134,667,883 ) Net 103,298,395 13,206,877 7,844,339 4,894,490 (11,577,160 ) (6,233,962 ) 111,432,979 Trademarks 28,207,166 53,467 — (6,012 ) — (835,613 ) 27,419,008 Accumulated amortization (23,539,961 ) — — — (1,008,483 ) 618,145 (23,930,299 ) Net 4,667,205 53,467 — (6,012 ) (1,008,483 ) (217,468 ) 3,488,709 Customer relationships 25,543,068 20,248 — 5,507 — (2,693,812 ) 22,875,011 Accumulated amortization (18,761,537 ) — — — (3,371,924 ) 2,357,831 (19,775,630 ) Net 6,781,531 20,248 — 5,507 (3,371,924 ) (335,981 ) 3,099,381 Software licenses 14,309,258 2,729,480 — (949,858 ) — (2,984,770 ) 13,104,110 Accumulated amortization (7,704,803 ) — — (1 ) (2,479,088 ) 2,183,149 (8,000,743 ) Net 6,604,455 2,729,480 — (949,859 ) (2,479,088 ) (801,621 ) 5,103,367 Content rights 7,549,709 1,427,694 — 1,638,007 — (455,228 ) 10,160,182 Accumulated amortization (6,763,592 ) — — (8,720 ) (1,772,779 ) 429,862 (8,115,229 ) Net 786,117 1,427,694 — 1,629,287 (1,772,779 ) (25,366 ) 2,044,953 Total of intangibles, net Ps. 122,137,703 Ps. 17,437,766 Ps. 7,844,339 Ps. 5,573,413 Ps. (20,209,434 ) Ps. (7,614,398 ) Ps. 125,169,389 Goodwill Ps. 145,566,497 Ps — Ps. 10,869,571 Ps. (843,005 ) — Ps. (2,693,262 ) Ps. 152,899,801 For the year ended December 31, 2020 Balance at Acquisitions Acquisitions Disposals and Amortization Effect of Balance at end Licenses and rights of use Ps. 246,100,862 Ps. 15,079,714 Ps. 4,436,313 Ps. 1,502,981 Ps. — Ps. (14,029,709 ) Ps. 253,090,161 Accumulated amortization (134,667,883 ) — — 105,892 (14,274,497 ) 14,227,424 (134,609,064 ) Net 111,432,979 15,079,714 4,436,313 1,608,873 (14,274,497 ) 197,715 118,481,097 Trademarks 27,419,008 162,309 12,110 4,000 — 1,534,938 29,132,365 Accumulated amortization (23,930,299 ) — — (4,276 ) (300,727 ) (1,119,645 ) (25,354,947 ) Net 3,488,709 162,309 12,110 (276 ) (300,727 ) 415,293 3,777,418 Customer relationships 22,875,011 1,935 2,689,718 (5,763 ) — 4,018,365 29,579,266 Accumulated amortization (19,775,630 ) — — 855 (1,654,237 ) (3,996,593 ) (25,425,605 ) Net 3,099,381 1,935 2,689,718 (4,908 ) (1,654,237 ) 21,772 4,153,661 Software licenses 13,104,110 2,445,784 36 (2,485,429 ) — 4,236,645 17,301,146 Accumulated amortization (8,000,743 ) — — 2,013,617 (2,667,870 ) (3,578,452 ) (12,233,448 ) Net 5,103,367 2,445,784 36 (471,812 ) (2,667,870 ) 658,193 5,067,698 Content rights 10,160,182 1,570,415 — (313,942 ) — 619,657 12,036,312 Accumulated amortization (8,115,229 ) — — — (1,440,749 ) (503,241 ) (10,059,219 ) Net 2,044,953 1,570,415 — (313,942 ) (1,440,749 ) 116,416 1,977,093 Total of intangibles, net Ps. 125,169,389 Ps. 19,260,157 Ps. 7,138,177 Ps. 817,935 Ps. (20,338,080 ) Ps. 1,409,389 Ps. 133,456,967 Goodwill Ps. 152,899,801 Ps. — Ps. (7,014,120 ) Ps. (537,343 ) Ps. — Ps. (2,295,479 ) Ps. 143,052,859 For the year ended December 31, 2021 Balance at Acquisitions Disposals and Amortization Effect of Balance at end Licenses and rights of use Ps. 253,090,161 Ps. 24,406,905 Ps. (4,427,685 ) Ps. — Ps. (7,011,691 ) Ps. 266,057,690 Accumulated amortization (134,609,064 ) — 6,764,067 (14,682,451 ) 6,737,503 (135,789,945 ) Net 118,481,097 24,406,905 2,336,382 (14,682,451 ) (274,188 ) 130,267,745 Trademarks (1) 29,132,365 75,100 (1,129,666 ) — (401,946 ) 27,675,853 Accumulated amortization (25,354,947 ) — 802,717 (140,205 ) 308,745 (24,383,690 ) Net 3,777,418 75,100 (326,949 ) (140,205 ) (93,201 ) 3,292,163 Customer relationships (1) 29,579,266 229,936 (4,133,408 ) — (1,105,668 ) 24,570,126 Accumulated amortization (25,425,605 ) — 3,830,742 (707,500 ) 1,093,401 (21,208,962 ) Net 4,153,661 229,936 (302,666 ) (707,500 ) (12,267 ) 3,361,164 Software licenses 17,301,146 2,660,330 (3,484,755 ) — (1,225,585 ) 15,251,136 Accumulated amortization (12,233,448 ) (626 ) 3,482,440 (2,738,978 ) 1,052,938 (10,437,674 ) Net 5,067,698 2,659,704 (2,315 ) (2,738,978 ) (172,647 ) 4,813,462 Content rights 12,036,312 818,436 (281,747 ) — 429,319 13,002,320 Accumulated amortization (10,059,219 ) — (147,668 ) (899,666 ) (404,537 ) (11,511,090 ) Net 1,977,093 818,436 (429,415 ) (899,666 ) 24,782 1,491,230 Total of intangibles, net Ps. 133,456,967 Ps. 28,190,081 Ps. 1,275,037 Ps. (19,168,800 ) Ps. (527,521 ) Ps. 143,225,764 Goodwill (1) Ps. 143,052,859 Ps. — Ps. (3,516,287 ) Ps. — Ps. (2,958,378 ) Ps. 136,578,194 (1) Includes disposals related to the sale of TracFone. See Note 2Ac. b) The aggregate carrying amount of goodwill is allocated as follows: 2020 2021 Europe Ps . Ps . Brazil 18,730,686 18,017,916 Puerto Rico 17,463,394 17,463,394 Dominican Republic 14,186,723 14,186,723 Colombia 12,253,743 11,685,585 México 10,148,380 10,164,814 Peru 2,710,979 2,532,770 Chile 2,558,098 2,311,239 El Salvador 2,499,544 2,510,595 United States (Tracfone) (3) 3,362,900 — Ecuador 2,155,384 2,155,384 Guatemala 2,301,533 1,947,203 Other countries 1,293,356 1,295,381 Ps.143,052,859 Ps.136,578,194 c) The following is a description of the major changes in the “Licenses and rights of use” caption during the years ended December 31, 2019, 2020 and 2021: 2019 Acquisitions i) In 2019, Claro Brasil increased its licenses value by Ps. ii) In 2019, AMX’s subsidiary in Austria acquired licenses to operate certain frequencies for Ps. iii) In 2019, Telmex increased its licenses value by Ps. iv) In January 2019, Telcel acquired licenses for an amount of Ps.1,649,525 for PC´s 98 concessions titles and September 30, 2019 for 400 MHZ concessions titles. v) In December 2019, Comcel increased its licenses value by Ps. vi) Additionally, in 2019, the Company acquired other licenses in Puerto Rico, Argentina, Guatemala, Panamá and other countries in the amount of Ps. 2020 Acquisitions i) In February 2020, Comcel increased its licenses value by Ps. ii) In 2020, Telcel acquired licenses for an amount Ps. iii) In January 2020, CTE acquired licenses by Ps. iv) In 2020, TAG acquired licenses for the right of us for Ps. v) Additionally, in 2020, the Company acquired other licenses in Puerto Rico, Argentina, Uruguay, Honduras, Paraguay, Brasil and other countries in the amount of 2021 Acquisitions i) In December the subsidiary Claro Brasil acquired a 5G license for Ps. carried out by ANATEL in November 2021, for the sale of radio frequency bands. The total amount of this license was recorded in the intangibles line on December 31, 2021. ii) During the year, AMX’s subsidiary in Austria acquired licenses for . iii) In November, AMX’s subsidiary in the Dominican Republic acquired a 5G concession and right of operation until . iv) AMX’s subsidiary in Colombia renewed spectrum at 5 MHZ in the 1900 MHZ band for an amount of Ps. according to resolution 2802 of October 2021, and made acquisitions of terrestrial fiber optics and submarine cable valid for . v) In February 2021, AMX’s subsidiary in El Salvador acquired licenses for an amount of . The concession is for 10 MHZ in the 1,900 mobile network bandwidth coverage in the national territory, exploitable as of February 28, 2021 with validity of vi) In February 2021, AMX’s subsidiary in Chile acquired a concession for the Concession of Band 1900 MHZ with a term Additionally, in 2021, the Company acquired other licenses in Mexico, Guatemala, Brazil, Ecuador, Peru, Argentina and other countries for an amount of Ps. Amortization of intangibles for the years ended December 31, 2019, 2020 and 2021 amounted to Ps. Some of the jurisdictions in which the Company operates can revoke their concessions under certain circumstances such as imminent danger to national security, national economy and natural disasters.

Business combinations, acquisit

Business combinations, acquisitions and non-controlling interest	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Business combinations, acquisitions and non-controlling interest	12. Business combinations, acquisitions and non-controlling interest a) Acquisitions 2020 a) During 2020, the Company acquired through its subsidiaries, other entities for which it paid Ps. b) The Company acquired an additional non-controlling interest in its entities for an amount of Ps. c) In December 2020, the offer submitted by our Brazilian subsidiary, Claro, jointly with Telefónica Brasil, S.A. and TIM, S.A. for the acquisition of the mobile business owned by Oi Group was accepted. The offer is in the amount of R$16.5 billion, of which Claro will pay 22%. In consideration of such amount, Claro will receive 32% of Oi Group’s mobile business customer base and approximately 4.7 thousand mobile access sites. The closing of the transaction is subject to customary conditions including regulatory approvals from Anatel and Conselho Administrativo de Defesa Econômica, CADE. Acquisitions 2021 a) The Company acquired an additional non-controlling interest in its entities for an amount of Ps.7,720 Consolidated subsidiaries with non-controlling interests The Company has control over Telekom Austria, which has a material non-controlling interest. Set out below is summarized information as of December 31, 2020 and 2021 of TKA’s consolidated financial statements. The amounts disclosed for this subsidiary are before inter-company eliminations and using the same accounting policies of América Móvil. Selected financial data from the consolidated statements of financial position December 31, 2020 2021 Assets: Current assets Ps . 32,775,046 Ps. 39,781,192 Non-current assets 150,747,947 142,407,870 Total assets Ps. 183,522,993 Ps. 182,189,062 Liabilities and equity: Current liabilities Ps. 49,942,415 Ps. 68,795,807 Non-current liabilities 82,293,652 58,312,238 Total liabilities 132,236,067 127,108,045 Equity attributable to equity holders of the parent 26,129,649 28,066,198 Non-controlling interest 25,157,277 27,014,819 Total equity Ps. 51,286,926 Ps. 55,081,017 Total liabilities and equity Ps. 183,522,993 Ps. 182,189,062 Summarized consolidated statements of comprehensive income For the year ended December 31, 2019 2020 2021 Operating revenues Ps. 98,420,289 Ps. 111,472,191 Ps. 113,838,487 Operating costs and expenses 89,732,428 98,312,325 98,346,896 Operating income Ps. 8,687,861 Ps. 13,159,866 Ps. 15,491,591 Net income Ps. 5,051,145 Ps. 7,787,388 Ps. 9,104,962 Total comprehensive income Ps. 1,466,783 Ps. 12,103,406 Ps. 7,790,499 Net income attributable to: Equity holders of the parent Ps. 2,565,733 Ps. 3,986,412 Ps. 4,629,816 Non-controlling interest 2,485,412 3,800,976 4,475,146 Ps. 5,051,145 Ps. 7,787,388 Ps. 9,104,962 Comprehensive income attributable to: Equity holders of the parent Ps. 748,059 Ps. 6,172,737 Ps. 3,973,154 Non-controlling interest 718,724 5,930,669 3,817,345 Ps. 1,466,783 Ps. 12,103,406 Ps. 7,790,499

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Income Taxes	13. Income Taxes As explained previously in these consolidated financial statements, the Company is a Mexican corporation which has numerous consolidated subsidiaries operating in different countries. Presented below is a discussion of income tax matters that relates to the Company’s consolidated operations, its Mexican operations and significant foreign operations. i) Consolidated income tax matters The composition of income tax expense (benefit) for the years ended December 31, 2019, 2020 and 2021 is as follows: 2019 2020 2021 In Mexico: Current year income tax Ps. 26,295,431 Ps. 13,407,948 Ps. 24,355,240 Deferred income tax 208,658 (9,334,246 ) (5,079,397 ) Foreign: Current year income tax 19,830,227 12,319,690 23,412,990 Deferred income tax 3,579,739 (2,884,122 ) (14,544,064 ) Total Income tax Ps. 49,914,055 Ps. 13,509,270 Ps. 28,144,769 Income Tax attributable to a discontinued operation Income tax discontinued operations in Mexico (1) — — (26,294,422 ) Income tax discontinued operations Foreign (1) (1,119,479 ) (2,856,882 ) (2,571,541 ) (1) Includes effects related to the sale of Tracfone. See Note 2Ac. Deferred tax related to items recognized in OCI during the year: For the years ended December 31, 2019 2020 2021 Remeasurement of defined benefit plans Ps. 9,217,320 Ps. 4,151,600 Ps. (4,760,089 ) Equity investments at fair value (378,606 ) (665,814 ) 583,892 Other — (35,670 ) — Revaluation assets — (29,922,597 ) — Deferred tax benefit recognized in OCI Ps. 8,838,714 Ps. (26,472,481 ) Ps. (4,176,197 ) A reconciliation of the statutory income tax rate in Mexico to the consolidated effective income tax rate recognized by the Company is as follows: Year ended December 31, 2019 2020 2021 Statutory income tax rate in Mexico 30.0 % 30.0 % 30.0 % Impact of non-deductible and non-taxable items: Tax inflation effects 3.8 % 8.6 % 7.9 % Derivatives (0.1 %) (1.0 %) (0.9 %) Employee benefits 2.0 % 4.2 % 2.6 % Other 2.0 % (3.4 %) (2.9 %) Effective tax rate on Mexican operations 37.7 % 38.4 % 36.7 % Tax recoveries in Brazil — (13.2 %) (10.8 %) Dividends received from associates Equity (0.5 %) (1.3 %) (0.7 %) Foreign subsidiaries and other non-deductible items, net 8.0 % 4.5 % 2.2 % Effective tax rate from continuing operations 45.2 % 28.4 % 27.4 % Effective tax rate from discontinued operations 10.2 % 14.4 % 19.2 % An analysis of temporary differences giving rise to the net deferred tax assets is as follows: Consolidated statements of financial position Consolidated statements of net income 2020 2021 2019 2020 2021 Provisions Ps. 19,312,081 Ps. 18,038,607 Ps. 318,843 Ps. 3,887,471 Ps. 2,324,227 Deferred revenues 6,748,101 9,041,137 (1,077,259 ) 897,762 2,202,413 Tax losses carry forward 25,121,933 33,954,926 (9,873 ) 2,236,244 10,352,978 Property, plant and equipment (1) (39,459,549 ) (33,445,815 ) (1,067,307 ) 3,990,750 9,246,429 Inventories (537,404 ) 135,658 (55,380 ) (2,394,485 ) 814,626 Licenses and rights of (1) (5,177,924 ) (3,668,389 ) 432,403 344,729 (151,013 ) Employee benefits 45,467,827 40,246,031 (1,019,042 ) 422,473 (354,803 ) Other 14,828,012 13,520,684 (1,310,782 ) 2,833,424 (4,811,396 ) Net deferred tax assets Ps. 66,303,077 Ps. 77,822,839 Deferred tax expense in net profit for the year Ps. (3,788,397 ) Ps. 12,218,368 Ps. 19,623,461 Deferred tax discontinued operations (105,986 ) 73,646 143,482 (1) As of December 31, 2020 and 2021, the balance included the effects of hyperinflation and revaluation of telecommunications towers. Reconciliation of deferred tax assets and liabilities, net: 2019 2020 2021 Opening balance as of January 1, Ps. 86,613,327 Ps. 88,074,856 Ps. 66,303,077 Deferred tax benefit (3,894,383 ) 12,292,014 19,623,461 Translation effect 2,047,915 375,105 (727,099 ) Deferred tax benefit recognized in OCI 8,838,714 (26,472,481 ) (4,176,197 ) Deferred taxes acquired in business combinations (276,568 ) (2,580,552 ) — Hyperinflationary effect in Argentina (5,254,149 ) (5,385,865 ) (3,540,962 ) Disposals see to 2Ac — — (1,203,203 ) Related discontinued operation — — 1,543,762 Closing balance as of December 31, Ps. 88,074,856 Ps. 66,303,077 Ps. 77,822,839 Presented in the consolidated statements of financial position as follows: Deferred income tax assets Ps. 106,167,897 Ps. 115,370,240 Ps. 127,287,934 Deferred income tax liabilities (18,093,041 ) (49,067,163 ) (49,465,095 ) Ps. 88,074,856 Ps. 66,303,077 Ps. 77,822,839 The deferred tax assets are in tax jurisdictions in which the Company considers that based on financial projections of its cash flows, results of operations and synergies between subsidiaries, will generate sufficient taxable income in subsequent periods to utilize or realize such assets. The Company does not recognize a deferred tax liability related to the undistributed earnings of its subsidiaries, because it currently does not expect these earnings to be taxable or to be repatriated in the near future. The Company’s policy has been to distribute the profits when it has paid the corresponding taxes in its home jurisdiction and the tax can be accredited in Mexico. At December 31, 2020 and 2021, the balance of the contributed capital account (“CUCA”) is Ps. 573,362,949 and Ps. 612,351,412 respectively. Effectively, on January 1, 2014, the Cuenta de Utilidad Fiscal Neta During 2021, America Móvil sold 100% of its participation in Tracfone Wireless, Inc (Tracfone), virtual operator of the most important mobile prepaid services in USA to Verizon Communications Inc. (“Verizon”), tax profit of this transaction was Ps. 93,968,555. ii) Significant foreign income tax matters a) The foreign subsidiaries determine their taxes on profits based on their individual taxable income, in accordance with the specific tax regimes of each country. The effective income tax rate for the Company’s foreign jurisdictions was 38% in 2019, 15% in 2020 and 14.2% in 2021. The statutory tax rates in these jurisdictions vary, although many approximate 10% to 34%. The primary difference between the statutory rates and the effective rates in 2019, 2020 and 2021 was attributable to dividends received from KPN, other non-deductible items, non-taxable income and tax recoveries in Brazil and registry of benefits related to tax losses credits in Brazil and Chile and Impairment related to subsidiaries in Europe. a.1 Given the more likely than not position of success of this lawsuit as consequence of the decision, with general repercussion, of the STF, Brazil updated its analysis, support documentation and forecast and recorded Ps. 2,647,919 (R$703,761) of which Ps. 2,076,594 (R$551,915) represent an excess on deferred IRPJ and CSLL and Ps. 571,325 (R$151,846) represent an excess on current IRPJ and CSLL. The subsidiaries are waiting for the necessary procedural steps to continue, to start the compensation of such amounts. a. 2 , iii) Tax losses a) At December 31, 2021, the available tax loss carryforwards recorded in deferred tax assets are as follows on a country by country basis: Country Gross balance Tax-effected Brazil Ps.71,910,653 Ps.24,449,622 Mexico 14,768,325 4,430,497 Europe 2,031,465 507,866 United States 432,301 112,398 Peru 356,133 105,060 Chile 16,109,194 4,349,483 Total Ps.105,608,071 Ps.33,954,926 b) bi) The Company believes that it is more likely than not that the accumulated balances of its net deferred tax assets are recoverable, based on the positive evidence of the Company to generate future taxable income related to the same taxation authority which will result in taxable amounts against which the available tax losses can be utilized before they expire. bii) biii) realization of deferred tax assets is dependent upon the expected generation of future taxable income during the periods in which these temporary differences become deductible. biv) The Company has accumulated Ps. 16,109,194 in NOL’s in Chile as of December 31, 2021. In Chile, the NOL´s have no expiration. The Company estimates that there is positive evidence that allows it to use these losses, these should be reduced to the extent that it is considered likely that there will be sufficient taxable profits to allow them to recover in full or in part, the losses will only be compensated when there is a right legally required and are approved by the tax authorities in Chile. iv) Optional regime The Mexican Tax Law establishes an optional regime for group companies called: Optional Regime for Groups of Companies. For these purposes, the integrating (controlling) company must own more than 80% of the shares with voting rights of the integrated (controlled) companies. In general terms, the Integration regime allowed deferral, for each of the companies that make up the group, and for up to three years, or sooner if certain assumptions are made, the whole of the income tax that results from considering the determination of the individual income tax to its charge is the effect derived from recognizing, indirectly, the tax losses incurred by the companies in the group for the year in question . On December 19, 2019, the integrating company submitted to the Mexican tax authorities, the notice to end to belong under the Optional Regime for Groups of Companies, which implied a payment made in January 2020 related to the deferred income tax for the years 2016-2018. From the year 2020, the group is taxable under the General Regime for Legal Persons. v) Limiting interest deductions The Mexican Tax Law establishes since 2020 new rules related to the limit on interest deductions, in concordance with the action 4 of Base Erosion and Profit Shifting (BEPS) project issued by the Organization for Economic Co-operation and Development (OECD), from which Mexico is member. In general terms, each Mexican companies should calculate an adjusted Tax EBITDA, whose amount times the corporate income tax, will be the interest limit allowed to be deducted in each tax year. It is important to mention that the amount that was not deductible could be carryforward in the following ten years. vi) Revaluation of telecommunications towers Deferred taxes related to the revaluation of the passive infrastructure of the telecommunications towers have been calculated at the tax rate of the jurisdiction in which the subsidiaries are located.

Debt

Debt	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Debt	14. Debt a) At December 31, 2020 (Thousands of Currency Loan Interest rate Maturity Total Senior Notes U.S. dollars Fixed-rate Senior notes (i) 3.125% 2022 Ps. 31,917,920 Fixed-rate Senior notes (i) 3.625% 2029 19,948,700 Fixed-rate Senior notes (i) 2.875% 2030 19,948,700 Fixed-rate Senior notes (i) 6.375% 2035 19,576,258 Fixed-rate Senior notes (i) 6.125% 2037 7,365,559 Fixed-rate Senior notes (i) 6.125% 2040 39,897,400 Fixed-rate Senior notes (i) 4.375% 2042 22,941,005 Fixed-rate Senior notes (i) 4.375% 2049 24,935,875 Subtotal U.S. dollars Ps. 186,531,417 Mexican pesos Fixed-rate Senior notes (i) 6.450% 2022 Ps. 22,500,000 Fixed-rate Senior notes (i) 7.125% 2024 11,000,000 Domestic Senior notes (i) 0.000% 2025 4,911,181 Fixed-rate Senior notes (i) 8.460% 2036 7,871,700 Domestic Senior notes (i) 8.360% 2037 5,000,000 Subtotal Mexican pesos Ps. 51,282,881 Euros Fixed-rate Senior notes (i) 3.000% 2021 Ps. 24,369,332 Fixed-rate Senior notes (i) 3.125% 2021 18,276,999 Fixed-rate Senior notes (i) 4.000% 2022 18,276,999 Fixed-rate Senior notes (i) 4.750% 2022 18,276,999 Fixed-rate Senior notes (i) 3.500% 2023 7,310,800 Fixed-rate Senior notes (i) 3.259% 2023 18,276,999 Fixed-rate Senior notes (i) 1.500% 2024 20,713,932 Fixed-rate Senior notes (i) 1.500% 2026 18,276,999 Fixed-rate Senior notes (i) 0.750% 2027 24,369,332 Fixed-rate Senior notes (i) 2.125% 2028 15,840,066 Commercial Paper (iv) (0.230%) - (0.310%) 2021 40,940,477 Subtotal Euros Ps. 224,928,934 Pound sterling Fixed-rate Senior notes (i) 5.000% 2026 Ps. 13,634,936 Fixed-rate Senior notes (i) 5.750% 2030 17,725,417 Fixed-rate Senior notes (i) 4.948% 2033 8,180,962 Fixed-rate Senior notes (i) 4.375% 2041 20,452,405 Subtotal Pound sterling Ps. 59,993,720 Brazilian reais Debentures (i) 104.000% of CDI 2021 Ps. 4,222,597 Debentures (i) 104.250% of CDI 2021 5,815,668 Promissory notes (i) CDI + 0.600% 2021 1,381,941 Debentures (i) CDI + 0.960% 2022 9,596,811 Promissory notes (i) 106.000% of CDI 2022 7,677,449 Debentures (i) 106.500% of CDI 2022 3,838,725 Subtotal Brazilian reais Ps. 32,533,191 Other currencies Japanese yen Fixed-rate Senior notes (i) 2.950% 2039 Ps. 2,511,701 Subtotal Japanese yen Ps. 2,511,701 Chilean pesos Fixed-rate Senior notes (i) 3.961% 2035 Ps. 4,078,453 Subtotal Chilean pesos Ps. 4,078,453 Subtotal other currencies Ps. 6,590,154 At December 31, 2020 (Thousands of Currency Loan Interest rate Maturity Total Hybrid Notes Euros Euro NC10 Series B Capital 6.375% 2073 Ps. 13,403,133 Subtotal Euros Ps. 13,403,133 Subtotal Hybrid notes Ps. 13,403,133 Lines of Credit and others Mexican pesos Lines of credit (ii) TIIE + 0.300 1.000 2021 Ps. 27,100,000 Peruvian soles Lines of credit (ii) 1.200% - 1.450% 2021 Ps. 17,094,079 Chilean pesos Lines of credit (ii) TAB + 0.350 0.450 2021 Ps. 8,868,181 Financial Leases 8.700% - 8.970% 2021 - 2027 Ps. 57,266 Subtotal Lines of Credit and others Ps. 53,119,526 Total debt Ps. 628,382,956 Less: Short-term debt and current portion of long-term Ps. 148,083,184 Long-term debt Ps. 480,299,772 At December 31, 2021 (Thousands of Currency Loan Interest rate Maturity Total Senior Notes U.S. dollars Fixed-rate Senior notes (i) 3.625% 2029 Ps. 20,583,500 Fixed-rate Senior notes (i) 2.875% 2030 20,583,500 Fixed-rate Senior notes (i) 6.375% 2035 20,199,206 Fixed-rate Senior notes (i) 6.125% 2037 7,599,943 Fixed-rate Senior notes (i) 6.125% 2040 41,167,000 Fixed-rate Senior notes (i) 4.375% 2042 23,671,025 Fixed-rate Senior notes (i) 4.375% 2049 25,729,375 Subtotal U.S. dollars Ps. 159,533,549 Mexican pesos Fixed-rate Senior notes (i) 6.450% 2022 Ps. 22,500,000 Fixed-rate Senior notes (i) 7.125% 2024 11,000,000 Domestic Senior notes (i) 0.000% 2025 5,284,885 Fixed-rate Senior notes (i) 8.460% 2036 7,871,700 Domestic Senior notes (i) 8.360% 2037 5,000,000 Subtotal Mexican pesos Ps. 51,656,585 Euros Fixed-rate Senior notes (i) 4.000% 2022 Ps. 17,566,473 Fixed-rate Senior notes (i) 3.500% 2023 7,026,589 Fixed-rate Senior notes (i) 3.259% 2023 17,566,474 Fixed-rate Senior notes (i) 1.500% 2024 19,908,670 Exchangeable Bond (i) 0.000% 2024 49,115,860 Fixed-rate Senior notes (i) 1.500% 2026 17,566,473 Fixed-rate Senior notes (i) 0.750% 2027 23,421,965 Fixed-rate Senior notes (i) 2.125% 2028 15,224,277 Subtotal euros Ps. 167,396,781 Pound sterling Fixed-rate Senior notes (i) 5.000% 2026 Ps. 13,924,738 Fixed-rate Senior notes (i) 5.750% 2030 18,102,159 Fixed-rate Senior notes (i) 4.948% 2033 8,354,843 Fixed-rate Senior notes (i) 4.375% 2041 20,887,106 Subtotal Pound sterling Ps. 61,268,846 At December 31, 2021 (Thousands of Currency Loan Interest rate Maturity Total Brazilian reais Debentures (i) CDI + 0.960% 2022 Ps. 9,221,172 Promissory notes (i) 106.000% of CDI 2022 7,376,937 Debentures (i) 106.500% of CDI 2022 3,688,469 Subtotal Brazilian reais Ps. 20,286,578 Other currencies Japanese yen Fixed-rate Senior notes (i) 2.950% 2039 Ps. 2,325,617 Subtotal Japanese yen Ps. 2,325,617 Chilean pesos Fixed-rate Senior notes (i) 3.961% 2035 Ps. 3,776,051 Subtotal Chilean pesos Ps. 3,776,051 Subtotal other currencies Ps. 6,101,668 Hybrid Notes Euros Euro NC10 Series B Capital Securities (iii) 6.375% 2073 Ps. 12,882,081 Subtotal Euros Ps. 12,882,081 Subtotal Hybrid Notes Ps. 12,882,081 Lines of Credit and others U.S. dollars Lines of credit (ii) 0.350% - 0.700% 2022 Ps. 14,723,980 Euros Lines of credit (ii) (0.400%) - 2022 Ps. 18,737,572 Mexican pesos Lines of credit (ii) TIIE + 0.280% - 2022 Ps. 34,080,000 Peruvian soles Lines of credit (ii) 0.976% - 1.045% 2022 Ps. 9,815,068 Chilean pesos Lines of credit (ii) TAB + 0.450% 2022 Ps. 7,419,372 Financial Leases 8.700% - 8.970% 2022 - 2027 Ps. 47,743 Others Lines of credit (ii) 15.790% 2022 Ps. 80,279 Subtotal Lines of Credit and others Ps. 84,904,014 Total debt Ps. 564,030,102 Less: Short-term debt and current portion of long-term debt Ps. 145,222,672 Long-term debt Ps. 418,807,430 L = LIBOR (London Interbank Offered Rate) TIIE = Mexican Interbank Rate CDI = Brazil Interbank Deposit Rate TAB = Chilean weighted average funding rate Interest rates on the Company’s debt are subject to fluctuations in international and local rates. The Company’s weighted average cost of borrowed funds as of December 31, 2020, and December 31, 2021 was approximately 3.72% and 3.78%, respectively. Such rates do not include commissions or the reimbursements for Mexican tax withholdings (typically a tax rate of 4.9%) that the Company must pay to international lenders. An analysis of the Company’s short-term debt maturities as of December 31, 2020, a n 2020 2021 Obligations and Senior Notes Ps. 95,007,014 Ps. 60,353,052 Lines of credit 53,062,260 84,856,270 Financial Leases 13,910 13,350 Subtotal short term debt Ps. 148,083,184 Ps. 145,222,672 Weighted average interest rate 2.23 % 4.02 % The Company’s long-term debt maturities are as follows: Years Amount 2023 Ps. 24,599,324 2024 80,031,350 2025 5,292,314 2026 and thereafter 308,884,442 Total Ps. 418,807,430 (i) Senior Notes The outstanding Senior Notes as of December 31, 2020, and December 31, 2021, are as follows: Currency* 2020 2021 U.S. dollars Ps.186,531,417 Ps.159,533,549 Mexican pesos 51,282,881 51,656,585 Euros 183,988,456 167,396,781 Pound sterling 59,993,720 61,268,846 Brazilian reais 32,533,191 20,286,578 Japanese yens 2,511,701 2,325,617 Chilean pesos 4,078,453 3,776,051 * Thousands of Mexican pesos * Includes secured and unsecured senior notes. In December 2021, the Company redeemed in advance 1,600 million U.S. Dollars senior notes with an interest rate of 3.125% and 750 million Euros senior notes with an interest rate of 4.75%. Both were set to mature in 2022. (ii) Lines of credit As of December 31, 2020, and December 31, 2021, debt under lines of credit aggregated to Ps. The Company has two revolving syndicated credit facilities, one for the Euro equivalent of U.S. $1,500 million and the other for U.S. $2,500 million maturing in 2026 and 2024, respectively. As long as the facilities are committed, a commitment fee is paid. As of December 31, 2021, these credit facilities are undrawn. Telekom Austria has an undrawn revolving syndicated credit facility in Euros for €1,000 million that matures in 2026. (iii) Hybrid Notes We currently have a Capital Securities (hybrid notes) maturing in 2073: a series denominated in euros for a total amount of €550 million with a coupon of 6.375%. The Capital Securities are deeply subordinated, and when they were issued the principal rating agencies stated that they would treat only half of the principal amount as indebtedness for purposes of evaluating our leverage (an analysis referred to as 50.0% equity credit). Standard & Poor´s considers 100% of the total amount of this note as debt. The Capital Securities are subject to redemption at our option at varying dates beginning in 2023 for the euro-denominated series. (iv) Commercial Paper In August 2020, we established a new Euro-Commercial Paper program for a total amount of €2,000 million. As of December 31, 2021, there is no debt under this program. Restrictions A portion of the debt is subject to certain restrictions with respect to maintaining certain financial ratios, as well as restrictions on selling a significant portion of groups of assets, among others. As of December 31, 2021, the Company was in compliance with all these requirements. A portion of the debt is also subject to early maturity or repurchase at the option of the holders in the event of a change in control of the Company, as defined in each instrument. The definition of change in control varies from instrument to instrument; however, no change in control shall be considered to have occurred as long as its current shareholders continue to hold the majority of the Company’s voting shares. Covenants In conformity with the credit agreements, the Company is obliged to comply with certain financial and operating commitments. Such covenants limit in certain cases, the ability of the Company or the guarantor to: pledge assets, carry out certain types of mergers, sell all or substantially all of its assets, and sell control of Telcel. Such covenants do not restrict the ability of AMX’s subsidiaries to pay dividends or other payment distributions to AMX. The more restrictive financial covenants require the Company to maintain a consolidated ratio of debt to EBITDA (defined as operating income plus depreciation and amortization) that does not exceed 4 to 1, and a consolidated ratio of EBITDA to interest paid that is not below 2.5 to 1 (in accordance with the clauses included in the credit agreements). Several of the financing instruments of the Company may be accelerated, at the option of the debt holder in the case that a change in control occurs. As of December 31, 2021, the Company was in compliance with all the covenants.

Right-of-use assets and lease d

Right-of-use assets and lease debt	12 Months Ended
	Dec. 31, 2021
Presentation of leases for lessee [abstract]
Right-of-use assets and lease debt	15. Right-of-use assets and lease debt The Company has lease contracts for various items of towers & sites, property and other equipment used in its operations. Towers and sites generally have lease terms between 5 and 12 years, while property and other equipment generally have lease terms between 5 and 25 years. At December 31, 2019, 2020 and 2021 the right-of-use Right-of-use Liability related to right-of-use Towers & Sites Property Other Total As of January 1, 2019 Ps. 94,252,098 Ps. 21,075,884 Ps. 4,750,320 Ps. 120,078,302 Ps. 119,387,660 Additions and release 6,364,508 921,542 729,001 8,015,051 7,437,621 Business Combinations 9,668,507 — — 9,668,507 10,810,111 Modifications 7,474,469 1,288,974 728,837 9,492,280 8,363,045 Depreciation (17,286,497 ) (4,941,222 ) (1,365,847 ) (23,593,566 ) — Interest expense — — — — 7,940,240 Payments — — — — (26,765,075 ) Translation adjustment (4,370,636 ) (905,808 ) (380,907 ) (5,657,351 ) (6,576,869 ) Balance at December 31, 2019 Ps. 96,102,449 Ps. 17,439,370 Ps. 4,461,404 Ps. 118,003,223 Ps. 120,596,733 Right-of-use Liability related to right-of-use Towers & Sites Property Other Total Balance at the beginning of the year Ps. 96,102,449 Ps. 17,439,370 Ps. 4,461,404 Ps. 118,003,223 Ps. 120,596,733 Additions and release 5,745,869 309,576 1,514,519 7,569,964 4,833,959 Modifications 8,559,335 (3,035,831 ) 1,048,858 6,572,362 7,769,326 Depreciation (22,064,413 ) (3,440,428 ) (2,866,244 ) (28,371,085 ) — Interest expense — — — — 9,134,288 Payments — — — — (29,623,565 ) Translation adjustment (3,124,365 ) 932,748 393,997 (1,797,620 ) (3,383,500 ) Balance at December 31, 2020 Ps. 85,218,875 Ps. 12,205,435 Ps. 4,552,534 Ps. 101,976,844 Ps. 109,327,241 Right-of-use Liability related to right-of-use Towers & Sites Property Other Total Balance at the beginning of the year Ps. 85,218,875 Ps. 12,205,435 Ps. 4,552,534 Ps. 101,976,844 Ps. 109,327,241 Additions and release 3,145,941 482,456 1,052,022 4,680,419 3,060,042 Modifications 10,945,985 1,024,573 998,161 12,968,719 12,535,394 Depreciation (20,699,207 ) (3,221,499 ) (2,630,526 ) (26,551,232 ) — Interest expense — — — — 7,301,216 Payments — — — — (30,544,750 ) Translation adjustment (2,054,566 ) (554,260 ) (93,531 ) (2,702,357 ) (3,024,918 ) Balance at December 31, 2021 Ps. 76,557,028 Ps. 9,936,705 Ps. 3,878,660 Ps. 90,372,393 Ps. 98,654,225 At December 31, 2020 and 2021, the total of the right-of-use assets include an amount of Ps. The implementation of IFRS 16 required a significant effort due to the fact of the need to make certain estimates, such as the lease term, based on the non-cancelable period and the periods covered by options to extend the lease. The Company considered the extension of the lease terms beyond the non-cancelable period only when it was reasonably certain to extend it. The reasonability of the extension was affected by several factors, such as regulation, business model, and geographical business strategies. The lease debt of the Company is integrated according to its maturities as follows: 2021 Short term Ps. 27,632,357 Long term 71,021,868 Total Ps. 98,654,225 The Company’s long-term debt maturities as of December 31, 2021 are as follows: Year ended December 31, 2023 Ps. 13,370,533 2024 22,664,124 2025 10,342,707 2026 and thereafter 24,644,504 Total Ps. 71,021,868 During the years ended December 31, 2019, 2020 and 2021, the Company recognized expenses as follows: 2019 Others Related parties Total Depreciation expense of right-of-use assets Ps. 18,176,521 Ps. 5,417,045 Ps. 23,593,566 Interest expense on lease liabilities 5,654,721 2,285,519 7,940,240 Expense relating to short-term leases 1,978,403 1,958 1,980,361 Expense relating to leases of low-value assets 25,935 — 25,935 Variable lease payments 1,299,502 — 1,299,502 Total Ps. 27,135,082 Ps. 7,704,522 Ps. 34,839,604 2020 Others Related parties Total Depreciation expense of right-of-use assets Ps. 22,404,924 Ps. 5,966,161 Ps. 28,371,085 Interest expense on lease liabilities 7,081,693 2,052,595 9,134,288 Expense relating to short-term leases 32,238 — 32,238 Expense relating to leases of low-value assets 2,883 — 2,883 Variable lease payments 78,494 — 78,494 Total Ps. 29,600,232 Ps. 8,018,756 Ps. 37,618,988 2021 Others Related parties Total Depreciation expense of right-of-use assets Ps. 19,932,316 Ps. 6,618,916 Ps. 26,551,232 Interest expense on lease liabilities 6,212,774 1,088,442 7,301,216 Expense relating to short-term leases 29,833 — 29,833 Expense relating to leases of low-value assets 685 — 685 Variable lease payments 68,236 — 68,236 Total Ps. 26,243,844 Ps. 7,707,358 Ps. 33,951,202 Impact on accounting for changes in lease payments applying the exemption. Based on the information available for evaluation as of the date of adoption, the effect of applying this amendment to IFRS 16 in the Company’s consolidated financial statements as of December 31, 2021 was Ps.

Accounts payable, accrued liabi

Accounts payable, accrued liabilities and asset retirement obligations	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Accounts payable, accrued liabilities and asset retirement obligations	16. Accounts payable, accrued liabilities and asset retirement obligations a) At December 31, 2020 2021 Suppliers Ps. 74,285,881 Ps. 87,942,106 Sundry creditors 101,406,307 107,111,390 Interest payable 7,661,762 6,827,225 Guarantee deposits from customers 1,386,645 1,577,424 Dividends payable 2,254,877 3,029,536 Total Ps. 186,995,472 Ps. 206,487,681 b) At December 31, 2020 2021 Current liabilities Direct employee benefits payable Ps. 18,965,160 Ps. 20,052,946 Contingencies 31,326,691 34,338,518 Total Ps. 50,291,851 Ps. 54,391,464 The movements in contingencies for the years ended December 31, 2020 and 2021 are as follows: Balance at Business Effect of Increase of Applications Balance at Payments Reversals Contingencies Ps. 34,379,969 Ps. 292 Ps. (4,290,753 ) Ps. 7,442,292 Ps. (3,214,407 ) Ps. (2,990,702 ) Ps. 31,326,691 Balance at Business Effect of Increase of Applications Balance at Payments Reversals Contingencies Ps. 31,326,691 Ps. — Ps. 1,556,950 Ps. 7,425,182 Ps. (4,079,190 ) Ps. (1,891,115 ) Ps. 34,338,518 Contingencies include tax, labor, regulatory and other legal type contingencies. See Note 17 b) for detail of contingencies. c) Balance at Business Effect of Increase of Applications Balance at Payments Reversals Asset retirement obligations Ps. 15,816,744 Ps. — Ps. 374,418 Ps. 2,412,908 Ps. (593,644 ) Ps. (122,435 ) Ps. 17,887,991 Balance at Business Effect of Increase of Applications Balance at Payments Reversals Asset retirement obligations Ps. 17,887,991 Ps. — Ps. (910,181 ) Ps. 1,273,201 Ps. (148,634 ) Ps. (1,350,154 ) Ps. 16,752,223 The discount rates used for the asset retirement obligation are based on market rates that are expected to be undertaken by the dismantling or restoration of cell sites and may include labor costs.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Commitments and Contingencies	17. Commitments and Contingencies a) Commitments The Company and its subsidiaries have commitments that mature on different dates, related to committed capital expenditures. As of December 31, 2021, the total amounts equivalent to the contract period are detailed below: Year ended December 31, 2022 Ps. 7,770,936 2023 3,469,647 2024 2,808,660 2025 and thereafter 19,960,884 Total Ps. 34,010,127 b) Contingencies In each of the countries in which we operate, we are party to legal proceedings in the ordinary course of business. These proceedings include tax, labor, antitrust, contractual matters and administrative and judicial proceedings concerning regulatory matters regarding interconnection and tariffs. The following is a description of our material legal proceedings. (1) Telcel Mobile Termination Rates The mobile termination rates between Telcel and other network operators have been the subject of various legal proceedings. With respect to interconnection fees for 2017, 2018, 2019, 2020 and 2021, Telcel has challenged the applicable resolutions and final resolutions are pending. With respect to 2022, Telcel will challenge the applicable resolutions. Given that the “zero rate” that prevented Telcel from charging termination rates in its mobile network was held unconstitutional by the Supreme Court (Suprema Corte de Justicia de la Nación or “SCJN”), the IFT has determined asymmetric interconnection rates for the termination of traffic in Telcel’s and other operators’ networks for 2018, 2019, 2020, 2021 and 2022. The resolutions setting such rates have been challenged by Telcel, and final resolutions are pending. The Company expects that mobile termination rates, as well as other rates applicable to mobile interconnection (such as transit), will continue to be the subject of litigation and administrative proceedings. The Company cannot predict when or how these disputes will be resolved or the financial effects of any such resolution. ( 2 Telcel Class Action Lawsuits One of the three class action lawsuits that have been filed against Telcel by customers allegedly affected by Telcel’s quality of service and wireless and broadband rates continues in process, the remaining two lawsuits have been concluded without any adverse effect on the Company. At this stage, the Company cannot assess whether this class action lawsuit could have an adverse effect on the Company’s business and results of operations in the event that it is resolved against Telcel, due to uncertainty about the factual and legal claims underlying this proceeding. Consequently, the Company has not established a provision in the accompanying consolidated financial statements for an eventual loss arising from this proceeding. ( 3 In 2018, the IFT imposed a fine of Ps. dedicated link services. Telmex challenged this fine, and a final resolution is pending . ( 4 As of December 31, 2021, certain Company’s Brazilian subsidiaries had aggregate tax contingencies of Ps. The most significant contingencies for which provisions have been established are: • Ps. (Imposto sobre a Circulação de Mercadorias e Prestação de Serviços or “ICMS” • Ps. 18,360,489 (R$ 4,977,808) aggregate contingencies and Ps. 3,228,656 (R$ 875,338) provisions related to social contribution on net income (Contribuição Social sobre o Lucro Lĺquido or “CSLL”) and corporate income tax (Imposto de Renda sobre Pessoa Jurĺdica or “IRPJ”) assessments; • Ps. provisions related to the social integration program (Programa de Integração Social or “PIS”) and the contribution for social security financing (Contribuição para o Financiamento da Seguridade Social or “COFINS”) assessments; • Ps. 11,684,785 (R$ 3,167,923) aggregate contingencies and Ps. 1,396,376 (R$ 378,579) provisions mainly related to an allegedly improper exclusion of interconnection revenues and costs from the basis used to calculate Fund for Universal Telecommunication Services (Fundo de Universalização dos Serviços de Telecomunicações or “FUST”) obligations, which are being contested; • Ps. provisions related to an alleged underpayment of obligations to the Telecommunications Technology Development Fund (Fundo para o Desenvolvimento Tecnológico das Telecomunicações or “FUNTTEL”), which are being challenged and for which a final resolution is pending; • Ps. provisions related to the alleged nonpayment of Services Tax (Imposto Sobre Serviços or “ISS”) over several communication services, including Pay TV services, considered taxable for ISS by the Municipal Revenue Services, which are being challenged and for which a final resolution is pending; • Ps. provisions arising from, among other , • Ps. provisions related to the requirement to contribute to the Promotion of Public Radio Broadcasting (“EBC”). In addition, the Company’s Brazilian subsidiaries are subject to a number of contingencies for which it has not established provisions in the accompanying consolidated financial statements because the Company does not consider the potential losses related to these contingencies to be probable. These include Ps. (R$ related to an unpaid installation inspection rate (Taxa de Fiscalização de Instalação or “TFI”) allegedly due to , along with any unpaid functioning inspection rate (Taxa de Fiscalização de Funcionamento or “TFF”). ( 5 Anatel has challenged the calculation of inflation-related adjustments due under the concession agreements with Tess S.A. (“Tess”), and Algar Telecom Leste S.A. (“ATL”), two of the Company’s subsidiaries that were previously merged into Claro Brasil. Anatel rejected Tess and ATL’s calculation of the inflation-related adjustments applicable to 60% of the concessions price (which was due in three equal annual installments, subject to inflation-related adjustments and interest), claiming that the companies’ calculation of the inflation related adjustments resulted in a shortfall of the installment payments. The companies filed declaratory and consignment actions seeking the resolution of the disputes and have obtained injunctions from the Federal Court of Appeal. suspending any payment until the pending appeals are resolved. The amount of the alleged shortfall as well as the method used to calculate monetary corrections are in dispute. If other methods or assumptions are applied, the amount may increase. In 2021, Anatel calculated the monetary correction in a total amount of Ps.

Employee Benefits

Employee Benefits	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Employee Benefits	18 An analysis of the net liability and net period cost for employee benefits i s At December 31, 2020 2021 Mexico Ps. 129,260,355 Ps. 110,225,654 Puerto Rico 14,924,874 12,502,377 Brazil 8,913,548 6,108,744 Europe 14,392,445 13,127,228 Ecuador 488,161 601,239 El Salvador 154,422 177,922 Nicaragua 61,337 75,084 Honduras 35,060 32,217 Total Ps. 168,230,202 Ps. 142,850,465 For the year ended December 31 2019 2020 2021 Mexico Ps. 12,788,464 Ps. 14,911,208 Ps. 15,507,652 Puerto Rico 747,755 664,046 548,550 Brazil 511,964 722,412 724,587 Europe 2,526,957 1,701,424 1,753,872 Ecuador 34,425 67,402 111,353 El Salvador — 15,751 19,081 Nicaragua — 3,711 18,561 Honduras — — 4,718 Total Ps. 16,609,565 Ps. 18,085,954 Ps. 18,688,374 a) Defined Benefit Plans The defined benefit obligation (DBO) and plan assets for the pension and other benefit obligation plans, by country, are as follows: At December 31 2020 2021 DBO Plan Assets Effect of Net employee DBO Plan Assets Effect of Net employee Mexico Ps. 278,434,302 Ps. (150,090,481 ) Ps. — Ps. 128,343,821 Ps. 286,396,483 Ps. (177,270,561 ) Ps. — Ps. 109,125,922 Puerto Rico 40,240,193 (25,315,319 ) — 14,924,874 38,092,662 (25,590,285 ) — 12,502,377 Brazil 18,568,932 (16,143,783 ) 3,393,640 5,818,789 15,497,227 (15,466,336 ) 4,422,459 4,453,350 Europe 5,490,873 — — 5,490,873 5,093,036 — — 5,093,036 Total Ps. 342,734,300 Ps. (191,549,583 ) Ps. 3,393,640 Ps. 154,578,357 Ps. 345,079,408 Ps. (218,327,182 ) Ps. 4,422,459 Ps. 131,174,685 Below is a summary of the actuarial results generated for the pension and retirement plans as well as the medical services in Puerto Rico and Brazil; the pension plans and seniority premiums related to Telmex; the pension plan, the service awards plan and severance in Austria corresponding to the years ended December 31, 2019, 2020 and 2021: At December 31, 2019 DBO Plan Assets Effectofasset Net employee Balance at the beginning of the year Ps. 306,702,447 Ps. (203,671,122 ) Ps. 5,087,543 Ps. 108,118,868 Current service cost 2,591,975 2,591,975 Interest cost on projected benefit obligation 31,001,348 31,001,348 Expected return on plan assets (20,070,037 ) (20,070,037 ) Changes in the asset ceiling during the period and others 445,743 445,743 Past service costs and others 144,481 144,481 Actuarial gain for changes in experience (22,599 ) (22,599 ) Actuarial gain from changes in demographic assumptions (129 ) (129 ) Actuarial loss from changes in financial assumptions 36,163 36,163 Net period cost Ps. 33,606,758 Ps. (19,925,556 ) Ps. 445,743 Ps. 14,126,945 Actuarial loss for changes in experience 31,606,323 31,606,323 Actuarial gain from changes in demographic assumptions (339,657 ) (339,657 ) Actuarial loss from changes in financial assumptions 7,207,072 7,207,072 Changes in the asset ceiling during the period and others (712,064 ) (712,064 ) Return on plan assets greater than discount rate (shortfall) 423,514 423,514 Recognized in other comprehensive income Ps. 38,473,738 Ps. 423,514 Ps. (712,064 ) Ps. 38,185,188 Contributions made by plan participants 155,188 (155,188 ) — Contributions to the pension plan made by the Company (1,337,610 ) (1,337,610 ) Benefits paid (15,836,928 ) 15,836,928 — Payments to employees (16,996,920 ) (16,996,920 ) Effect of translation (3,534,509 ) 2,528,213 (393,201 ) (1,399,497 ) Others Ps. (36,213,169 ) Ps. 16,872,343 Ps. (393,201 ) Ps. (19,734,027 ) Balance at the end of the year 342,569,774 (206,300,821 ) 4,428,021 140,696,974 Less short-term portion (213,065 ) (213,065 ) Non-current obligation Ps. 342,356,709 Ps. (206,300,821 ) Ps. 4,428,021 Ps. 140,483,909 At December 31, 2020 DBO Plan Assets Effect of asset Net employee Balance at the beginning of the year Ps. 342,569,774 Ps. (206,300,821 ) Ps. 4,428,021 Ps. 140,696,974 Current service cost 2,810,584 2,810,584 Interest cost on projected benefit obligation 30,482,173 30,482,173 Expected return on plan assets (17,655,119 ) (17,655,119 ) Changes in the asset ceiling during the period and others 278,639 278,639 Past service costs and other 148,253 148,253 Actuarial gain for changes in experience (8,945 ) (8,945 ) Actuarial gain from changes in demographic assumptions (270 ) (270 ) Actuarial loss from changes in financial assumptions 20,219 20,219 Net period cost Ps. 33,303,761 Ps. (17,506,866 ) Ps. 278,639 Ps. 16,075,534 Actuarial gain for changes in experience (9,677 ) (9,677 ) Actuarial gain from changes in demographic assumptions (103,987 ) (103,987 ) Actuarial loss from changes in financial assumptions 3,475,345 3,475,345 Changes in the asset ceiling during the period and others (542,430 ) (542,430 ) Return on plan assets greater than discount rate (shortfall) 12,320,777 12,320,777 Others (924,084 ) (924,084 ) Recognized in other comprehensive income Ps. 2,437,597 Ps. 12,320,777 Ps. (542,430 ) Ps. 14,215,944 Contributions made by plan participants 137,947 (137,947 ) — Contributions to the pension plan made by the Company (1,882,654 ) (1,882,654 ) Benefits paid (19,740,727 ) 19,740,727 — Payments to employees (14,426,720 ) (14,426,720 ) Effect of translation (1,278,392 ) 2,217,201 (770,590 ) 168,219 Others Ps. (35,307,892) Ps. 19,937,327 Ps. (770,590) Ps. (16,141,155) Balance at the end of the year 343,003,240 (191,549,583 ) 3,393,640 154,847,297 Less short-term portion (268,940 ) (268,940 ) Non-current Ps. 342,734,300 Ps. (191,549,583) Ps. 3,393,640 Ps. 154,578,357 At December 31, 2021 DBO Plan Assets Effect of asset Net employee Balance at the beginning of the year Ps. 343,003,240 Ps. (191,549,583) Ps. 3,393,640 Ps. 154,847,297 Current service cost 2,090,896 2,090,896 Interest cost on projected benefit obligation 28,913,257 28,913,257 Expected return on plan assets (15,112,669 ) (15,112,669 ) Changes in the asset ceiling during the period and others 215,544 215,544 Past service costs and other 139,910 139,910 Actuarial gain for changes in experience (23,024 ) (23,024 ) Actuarial gain from changes in demographic assumptions (48 ) (48 ) Actuarial gain (6,907 ) (6,907 ) Net period cost Ps. 30,974,174 Ps. (14,972,759) Ps. 215,544 Ps. 16,216,959 Actuarial loss 10,728,950 10,728,950 Actuarial gain from changes in demographic assumptions (104,568 ) (104,568 ) Actuarial gain (4,099,321 ) (4,099,321 ) Changes in the asset ceiling during the period and others 969,433 969,433 Return on plan assets greater than discount rate (shortfall) (22,198,615 ) (22,198,615 ) Recognized in other comprehensive income Ps. 6,525,061 Ps. (22,198,615 ) Ps. 969,433 Ps. (14,704,121 ) Contributions made by plan participants 99,201 (99,201 ) — Contributions to the pension plan made by the Company 311,108 311,108 Benefits paid (10,574,420 ) 10,348,544 (225,876 ) Payments to employees (25,042,314 ) (25,042,314 ) Effect of translation 330,770 (166,676 ) (156,158 ) 7,936 Others Ps. (35,186,763) Ps. 10,393,775 Ps. (156,158) Ps. (24,949,146) Balance at the end of the year 345,315,712 (218,327,182 ) 4,422,459 131,410,989 Less short-term portion (236,304 ) (236,304 ) Non-current obligation Ps. 345,079,408 Ps. (218,327,182) Ps. 4,422,459 Ps. 131,174,685 In the case of other subsidiaries in Mexico, the net period cost of other employee benefits for the years ended December 31, 2019, 2020 and 2021 was Ps. 49,050, Ps. 174,994 and Ps.267,728, respectively. The balance of other employee benefits at December 31, 2020 and 2021 was Ps. 916,534 and Ps. 1,099,732, respectively. In the case of Brazil, the net period cost of other benefits for the years ended December 31, 2019, 2020 and 2021 was Ps. 99,498, Ps. 268,562 and Ps. 225,984, respectively. The balance of employee benefits at December 31, 2020 and 2021 was Ps. 2,111,801 and Ps.1,380,764, respectively. In the case of Ecuador, the net period cost of other benefits for the years ended December 31, 2019, 2020 and 2021 was Ps. 34,425, Ps. 67,402 and Ps. 111,353, respectively. The balance of employee benefits at December 31, 2020 and 2021 was Ps. 488,161 and Ps. 601,239, respectively. In the case of Central America, the net period cost of other benefits for the years ended December , and was Ps. and Ps. , respectively. The balance of employee benefits at December , and was Ps. and Ps. , respectively. Plan assets are invested in: At December 31 2020 2021 Puerto Rico Brazil Mexico Puerto Rico Brazil Mexico Equity instruments 43 % — 68 % 42 % — 74 % Debt instruments 22 % 95 % 32 % 21 % 94 % 26 % Others 35 % 5 % — 37 % 6 % — 100 % 100 % 100 % 100 % 100 % 100 % Included in the Telmex’s net pension plan liability are plan assets of Ps. 150,090,481 and Ps. . ( 20 1 The assumptions used in determining the net period cost were as follows: 2019 2020 2021 Puerto Brazil Mexico Europe Puerto Brazil Mexico Europe Puerto Brazil Mexico Europe 0.75%, 0.25%, 0.25%, 1.00% & 6.48% & 0.50% & 8.51% & 0.75% & Discount rate and long-term 3.23 % 7.03 % 10.50 % 1.25% 2.34 % 7.39 % 10.04 % 0.75% 2.75 % 8.67% 10.4 % 1.00% 3.00%, 3.00%, 3.00%, 3.5% & 3.5% & 3.40% & Rate of future salary increases 2.75% 3.80% 3.20% 4.40% 2.75% 3.25% 2.84% 4.10% 2.75% 3.25% 2.80% 4.00% Percentage of increase in health care 3.18% 10.30% 2.28% 9.96% 2.72% 9.44% Year to which this level will be N/A 2029 N/A 2031 NA 2030 Rate of increase of pensions 1.60% 1.60% 1.60% Employee turnover rate* 0.00%-1.38% 0.00%-1.31% 0.00%-1.12% * Depending on years of service Biometric Puerto Rico: Mortality: RP 2014, MSS 202 1 Disability: 1985 Pension Disability Table Brazil: Mortality: 2000 Basic AT Table for gender Disability for assets: UP 84 modified table for gender Disability retirement: 80 CSO Code Table Rotation: Probability of leaving the Company other than death, Disability and retirement is zero Europe Life expectancy in Austria is base on “AVÖ 2018-P – Rechnungsgrundlagen für die Pensionsversicherung – Pagler & Pagler”. Telmex Mortality: Mexican 2000 (CNSF) adjusted Disability: Mexican Social Security adjusted by Telmex experience Turnover: Telmex experience Retirement: Telmex experience For the year ended December 31, 2021, the Company conducted a sensitivity analysis on the most significant variables that affect the DBO, simulating independently, reasonable changes to roughly 100 basis points in each of these variables. The increase (decrease) would have resulted in the DBO pension and other benefits at December 31, 2021 are as follows: -100 points +100 points Discount rate Ps. 32,094,727 Ps. (22,626,321 ) Health care cost trend rat Ps. (431,724 ) Ps. 499,356 Telmex Plans Part of the Telmex´s employees are covered under defined benefit pension plans and seniority premiums. Pension benefits and seniority premiums are determined on the basis in their final year of employment, their seniority, and their age at the time of retirement. Telmex has set up an irrevocable trust fund to finance these employee benefits and has adopted the policy of making contributions to such fund when it is considered necessary. Europe Defined benefit pension plans A1 Telekom Austria Group provides defined benefits for certain former employees in Austria. All eligible employees are retired and were employed prior to January 1, 1975. This unfunded plan provides benefits based on a percentage of salary and years employed, not exceeding 80% of the salary before retirement, and taking into consideration the pension provided by the social security system. A1 Telekom Austria Group is exposed primarily to the risk of development of life expectancy and inflation because the benefits from pension plans are lifetime benefits. Furthermore, at December 31, 2021, approximately 24% (2020: 20%) of the obligation for pensions relate to the employees of the company Akenes in Lausanne. Service awards Civil servants and certain employees (in the following “employees”) are eligible to receive service awards. In accordance with the legal regulations, eligible employees receive a cash bonus of two months’ salary after 25 years of service and four months’ salary after 40 years of service. Employees with at least 35 years of service when retiring (at the age of 65) or who are retiring based on specific legal regulations are also eligible to receive the service award of four monthly salaries. The obligation is accrued over the period of service, taking into account the employee turnover rate for employees who leave employment prematurely. The main risk that A1 Telekom Austria Group is exposed to is the risk of development of salary increases and changes of interest rates. Severance Defined contribution plans Employees who started work for A1 Telekom Austria Group in Austria on or after January 1, 2003 are covered by a defined contribution plan. In 2021, A1 Telekom Austria Group paid Ps. 68,425 (2020: Ps. 66,294), 1.53% of the salary or wage, into this defined contribution plan (BAWAG Allianz Mitarbeitervorsorgekasse AG). Defined benefit plans Severance benefit obligations for employees, whose employment commenced before January 1, 2003, excluding civil servants, are covered by defined benefit plans. Upon termination of employment by A1 Telekom Austria Group or upon retirement, eligible employees receive severance payments. Depending on their time in service, their severance amounts to a multiple of their monthly basic compensation plus variable components such as overtime or bonuses, up to a maximum of twelve monthly salaries. In case of death, the heirs of eligible employees receive 50% of the severance benefits. The primary risks to A1 Telekom Austria Group are salary increases and changes of interest rates. b) Defined Contribution Plans Brazil Claro makes contributions to the DCP through Embratel Social Security Fund – Telos. Contributions are computed based on the salaries of the employees, who decide on the percentage of their contributions to the plan (participants enrolled before October 31st, 2014 is from 1% to 8% and, for those subscribed after that date, the contribution is from 1% to 7% of their salaries). Claro contributes the same percentage as the employee, capped at 8% of the participant’s balance for the employees that are eligible to participate in this plan. At December 31, 2020 and 2021, the balance of the DCP liability was Ps. 980,014 and Ps . Europe In Austria, pension benefits are generally provided by the social security system for employees, and by the government for civil servants. The contributions of 12.55% of gross salaries that A1 Telekom Austria Group made in 2021 to the social security system and the government in Austria amount to Ps. 1,436,587 (2020: Ps. Additionally, A1 Telekom Austria Group offers a defined contribution plan for employees of some of its Austrian subsidiaries. A1 Telekom Austria Group’s contributions to this plan are based on a percentage of the compensation not exceeding 5%. In 2021, the annual expenses for this plan amounted to Ps. 286,195 (2020: Ps. As of December 31, 2020 and 2021 the liability related to this defined contribution plan amounted to Ps. 134,034 and Ps. Other countries For the rest of the countries where the Company operates and that do not have defined benefit plans or defined contribution plans, the Company makes contributions to the respective governmental social security agencies which are recognized in results of operations as they are incurred. c) Long-term direct employee benefits Balance at Effect of Increase of Payments Balance at Long-term direct employee benefits Ps. 8,175,767 Ps. 1,256,880 Ps. 1,729,392 Ps. (2,411,436 ) Ps. 8,750,603 Balance at Effect of Increase of Payments Balance at Long-term direct employee benefits Ps. 8,750,603 Ps. (328,619 ) Ps. 1,824,693 Ps. (2,320,831 ) Ps. 7,925,846 In 2008, a comprehensive restructuring program was initiated in the segment Austria. The provision for restructuring includes future compensation of employees who will no longer provide services for A1 Telekom Austria Group but who cannot be laid off due to their status as civil servants. These employment contracts are onerous contracts under IAS 37, as the unavoidable cost related to the contractual obligation exceeds the future economic benefit. The restructuring program also includes social plans for employees whose employment will be terminated in a socially responsible way. In 2009 and every year from 2011 to 2019, new social plans were initiated that provide for early retirement, special severance packages and golden handshake options. Due to their nature as termination benefits, these social plans are accounted for according to IAS 19.

Financial Assets and Liabilitie

Financial Assets and Liabilities	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Financial Assets and Liabilities	19. Financial Assets and Liabilities Set out below is the categorization of the financial instruments, excluding cash and cash equivalents, held by the Company as of December 31, 2020 and 2021: December 31, 2020 Loans and Fair value Fair value Financial Assets: Equity investments at fair value through OCI and other short term investments Ps. 62,940 Ps. — Ps. 50,033,111 Accounts receivable from subscribers, distributors, contractual assets and other 171,213,415 — — Related parties 1,391,300 — — Derivative financial instruments (Note 7) — 20,928,335 — Total current assets 172,667,655 20,928,335 50,033,111 Non-current assets Debt instruments — — 4,540,344 Total Ps. 172,667,655 Ps. 20,928,335 Ps. 54,573,455 Financial Liabilities: Debt Ps. 628,382,956 Ps. — Ps. — Liability related to right-of-use of assets 109,327,241 — — Accounts payable 186,995,472 — — Related parties 3,999,916 — — Derivative financial instruments (Note 7) — 14,230,249 — Total Ps. 928,705,585 Ps. 14,230,249 Ps. — December 31, 2021 Loans and Fair value Fair value Financial Assets: Equity investments at fair value through OCI and other short term investments Ps. 15,026 Ps. — Ps. 117,688,176 Accounts receivable from subscribers, distributors, contractual assets and other 166,041,321 — — Related parties 1,158,611 — — Derivative financial instruments (Note 7) — 10,130,806 — Total current assets 167,214,958 10,130,806 117,688,176 Non-current assets Debt instruments — — 6,894,757 Total Ps. 167,214,958 Ps. 10,130,806 Ps. 124,582,933 Financial Liabilities: Debt Ps. 564,030,102 Ps. — Ps. — Liability related to right-of-use of assets 98,654,225 — — Accounts payable 201,341,806 — — Related parties 4,216,882 — — Derivative financial instruments (Note 7) — 10,034,508 — Total Ps. 868,243,015 Ps. 10,034,508 Ps. — Fair value hierarchy The Company’s valuation techniques used to determine and disclose the fair value of its financial instruments are based on the following hierarchy: Level 1: Quoted prices (unadjusted) in active markets for identical assets or liabilities; Level 2: Variables other than quoted prices in Level 1 that are observable for the asset or liability, either directly (prices) or indirectly (derived from prices); and Level 3: Variables used for the asset or liability that are not based on any observable market data (non-observable variables). The fair value for the financial assets (excluding cash and cash equivalents) and financial liabilities shown in the consolidated statements of financial position at December 31, 2020 and 2021 is as follows: Measurement of fair value at December 31, 2020 Level 1 Level 2 Level 3 Total Assets: Equity investments at fair value through OCI and other short-term investments Ps. 50,033,111 Ps. 62,940 Ps. — Ps. 50,096,051 Derivative financial instruments (Note 7) — 20,928,335 — 20,928,335 Revalued of assets (Note 23) — — 107,152,628 107,152,628 Pension plan assets (Note 18) 168,939,091 22,589,392 21,100 191,549,583 Total current assets 218,972,202 43,580,667 107,173,728 369,726,597 Debt instruments — 4,540,344 — 4,540,344 Total Ps. 218,972,202 Ps. 48,121,011 Ps. 107,173,728 Ps. 374,266,941 Liabilities: Debt Ps. 578,712,562 Ps. 135,645,912 Ps. — Ps. 714,358,474 Liability related to right-of-use of assets 109,327,241 — — 109,327,241 Derivative financial instruments (Note 7) — 14,230,249 — 14,230,249 Total Ps. 688,039,803 Ps. 149,876,161 Ps. — Ps. 837,915,964 Measurement of fair value at December 31, 2021 Level 1 Level 2 Level 3 Total Assets: Equity investments at fair value through OCI and other short-term investments Ps. 117,688,176 Ps. 15,026 Ps. — Ps. 117,703,202 Derivative financial instruments (Note 7) — 10,130,806 — 10,130,806 Revalued of assets (Note 23) — — 98,172,675 98,172,675 Pension plan assets (Note 18) 196,148,604 22,124,138 54,440 218,327,182 Total current assets 313,836,780 32,269,970 98,227,115 444,333,865 Debt instruments — 6,894,757 — 6,894,757 Total Ps. 313,836,780 Ps. 39,164,727 Ps. 98,227,115 Ps. 451,228,622 Liabilities: Debt Ps. 440,660,165 Ps. 180,122,540 Ps. — Ps. 620,782,705 Liability related to right-of-use of assets 98,654,225 — — 98,654,225 Derivative financial instruments — 10,034,508 — 10,034,508 Total Ps. 539,314,390 Ps. 190,157,048 Ps. — Ps. 729,471,438 Fair value of derivative financial instruments is valued using valuation techniques with market observable inputs. To determine its Level 2 fair value, the Company applies different valuation techniques including forward pricing and swaps models, using present value calculations. The models incorporate various inputs including credit quality of counterparties, foreign exchange spot and forward rates and interest rate curves. Fair value of debt Level 2 has been determined using a model based on present value calculation incorporating credit quality of AMX. The Company’s investment in equity investments at fair value, specifically the investment in KPN and Verizon, is valued using the quoted prices (unadjusted) in active markets for identical assets. The net realized (loss) gain related to derivative financial instruments for the years ended December 31, 2020 and 2021 was Ps. The fair value of the asset revaluation was calculated using valuation techniques, using observable market data and internal information on transactions carried out with independent third parties. To determine fair value we use level 2 and 3 information, the Company used inputs such as average rents, contract term and discount rates for discounted flow modeling techniques; in the case of discount rates, we use level 2 data where the information is public and is found in recognized databases, such as country risks, inflation, etc. In the case of average rents and contract terms, we use level 3 data, where the information is mainly internal based on lease contracts entered into with independent third parties. During the end of the period ended December 31, 2020 and 2021, there were no transfers between the Level 1 and Level 2 fair value measurement hierarchies. Changes in liabilities arising from financing activities At Cash flow Foreign currency At December 31, Debt Ps. 624,254,477 Ps. (53,091,801 ) Ps. 57,220,280 Ps. 628,382,956 Liability related to right-of-use of assets 120,596,733 (29,623,565 ) 18,354,073 109,327,241 Total liabilities from financing activities Ps. 744,851,210 Ps. (82,715,366 ) Ps. 75,574,353 Ps. 737,710,197 At December 31, Cash flow Foreign currency At December 31, Debt Ps. 628,382,956 Ps. (58,354,281 ) Ps. (5,998,573 ) Ps. 564,030,102 Liability related to right-of-use of assets 109,327,241 (30,544,750 ) 19,871,734 98,654,225 Total liabilities from Ps. 737,710,197 Ps. (88,899,031 ) Ps. 13,873,161 Ps. 662,684,327

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2021
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Shareholders' Equity	20. Shareholders’ Equity a) b) c) d) The Company’s bylaws contain restrictions and limitations related to the subscription and acquisition of “AA” shares by non-Mexican investors. e) “A” shares, which may be freely subscribed, must not represent more than 19.6% of capital stock and must not exceed 49% of the common shares representing such capital. Common shares (entitled to full voting rights, represented by “AA” and “A” shares), must represent no more than 51% of the Company’s capital stock. Lastly , “L” shares which have limited voting rights and may be freely subscribed may not exceed, along with “A” shares, % of the Company’s capital stock. For purposes of determining these restrictions, the percentages mentioned above refer only to the number of the Company’s shares outstanding. Dividends On April 26, 2021, the Company’s shareholders approved, among other resolutions, the payment of a dividend of Ps. 0.40 (forty peso cents) per share to each of the shares series of its capital stock “AA”, “A” and “L”. It was approved, that such dividend would be paid in two installments of Ps. 0.20 (twenty peso cents) each, on July 19 and November 08, 2021 respectively. On April 24, 2020, the Company’s shareholders approved, among other resolutions, the payment of a dividend of Ps. 0.38 (thirty-eight peso cents) per share to each of the shares series of its capital stock “AA”, “A” and “L”. It was approved, that such dividend would be paid in two installments of Ps. 0.19 (nineteen peso cents) each, on July 20 and November 09, 2020 respectively. Legal Reserve According to the Ley General de Sociedades Mercantiles, companies must allocate from the net profit of each year, at least 5% to increase the legal reserve until it reaches 20% of its capital stock. This reserve may not be distributed to shareholders during the existence of the Company, except as a stock dividend. As of December 31, 2021 and 2020, the legal reserve amounted Ps. 358,440. Restrictions on Certain Transactions Pursuant to the Company’s bylaws any transfer of more than 10% of the full voting shares (“A” shares and “AA” shares), effected in one or more transactions by any person or group of persons acting in concert, requires prior approval by our Board of Directors. If the Board of Directors denies such approval, however, the Company bylaws require it to designate an alternate transferee, who must pay market price for the shares as quoted on the Bolsa Mexicana de Valores, S.A.B. de C.V. Payment of Dividends Dividends, either in cash or in kind, paid with respect to the “A” Shares, “L” Shares, “A” Share ADSs or “L” Share ADSs will generally be subject to a 10% Mexican withholding tax (provided that no Mexican withholding tax will apply to distributions of net taxable profits generated before 2014). Nonresident holders could be subject to a lower tax rate, to the extent that they are eligible for benefits under an income tax treaty to which Mexico is a party. Earnings per Share The following table shows the computation of the basic and diluted earnings per share: For the years ended December 31, 2019 2020 2021 Net profit for the period attributable Ps. 57,886,001 Ps. 29,859,980 Ps. 70,712,449 Net profit for the period attributable 9,844,889 16,992,625 121,710,718 Net profit for the period attributable 67,730,890 46,852,605 192,423,167 Weighted average shares (in millions) 66,016 66,265 65,967 Earnings per share attributable to Ps. 0.88 Ps. 0.45 Ps. 1.07 Earnings per share attributable to Ps. 0.15 Ps. 0.26 Ps. 1.85

Components of other comprehensi

Components of other comprehensive loss (income)	12 Months Ended
	Dec. 31, 2021
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Components of other comprehensive loss (income)	21. Components of other comprehensive loss (income) The movement on the components of the other comprehensive (loss) income for the years ended December 31, 2019, 2020 and 2021 is as follows: For the years ended December 31, 2019 2020 2021 Controlling interest: Unrealized gain (loss) on equity investments at fair value, net of deferred taxes Ps. 883,409 Ps. (1,952,414 ) Ps. 4,560,869 Translation effect of foreign entities (34,010,066 ) (13,558,774 ) (4,837,206 ) Translation effect by discontinued operations — — (829,163 ) Remeasurement of defined benefit plan, net of deferred taxes (29,153,554 ) (10,026,454 ) 11,100,835 Asset’s revaluation surplus net of deferred taxes — 64,835,155 — Non-controlling interest of the items above (1,908,304 ) 14,165,249 (2,135,886 ) Other comprehensive (loss) income Ps. (64,188,515 ) Ps. 53,462,762 Ps. 7,859,449

Valuation of derivatives, inter

Valuation of derivatives, interest cost from labor obligations and other financial items, net	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Valuation of derivatives, interest cost from labor obligations and other financial items, net	22. Valuation of derivatives, interest cost from labor obligations and other financial items, net For the years ended December 31, 2019, 2020 and 2021, valuation of derivatives and other financial items are as follows: For the years ended December 31, 2019 2020 2021 Controlling interest: Gain (loss) in valuation of derivatives, net Ps. 4,432,023 Ps. 12,378,193 Ps. (6,755,214 ) Capitalized interest expense (Note 10 b) 2,233,358 1,771,613 1,527,259 Commissions (2,820,477 ) (1,135,082 ) (1,071,935 ) Interest cost of labor obligations (Note 18) (11,377,054 ) (13,105,693 ) (14,375,520 ) Interest expense on taxes (516,522 ) (59,032 ) (243,075 ) Dividend received (Note 4) 1,773,336 2,122,826 2,628,600 Gain on net monetary positions 4,267,194 3,262,512 4,876,842 Other financial cost (i) (4,989,702 ) (3,942,459 ) (837,023 ) Total with discontinued operations Ps. (6,997,844 ) Ps. 1,292,878 Ps. (14,250,066 ) (i) Includes discontinued operations of Tracfone (See note 2, Ac)

Segments

Segments	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Segments	23. Segments América Móvil operates in different countries. As mentioned in Note 1, the Company has operations in Mexico, Guatemala, Nicaragua, Ecuador, El Salvador, Costa Rica, Brazil, Argentina, Colombia, Honduras, Chile, Peru, Paraguay, Uruguay, Dominican Republic, Puerto Rico, Panama, Austria, Croatia, Bulgaria, Belarus, Macedonian, Serbia and Slovenia. The accounting policies for the segments are the same as those described in Note 2. The Chief Executive Officer, who is the Chief Operating Decision Maker (“CODM”), analyzes the financial and operating information by operating segment. All operating segments that (i) represent more than 10% of consolidated revenues, (ii) more than the absolute amount of its reported 10% of profits before income tax or (iii) more than 10% of consolidated assets, are presented separately. The Company presents the following reportable segments for the purposes of its consolidated financial statements: Mexico (includes Telcel and Corporate operations and assets), Telmex (Mexico), Brazil, Southern Cone (includes Argentina, Chile, Paraguay and Uruguay), Colombia, Andean (includes Ecuador and Peru), Central America (includes Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica and Panama), U.S.A. (excludes Puerto Rico), Caribbean (includes Dominican Republic and Puerto Rico), and Europe (includes Austria, Bulgaria, Croatia, Belarus, Slovenia, Macedonia and Serbia). The segment Southern Cone comprises mobile communication services in Argentina as well as Chile, Paraguay and Uruguay. Beginning in 2018, hyperinflation accounting in accordance with IAS 29 was initially applied to Argentina, which results in the restatement of non-monetary assets, liabilities and all items of the statement of comprehensive income for the change in a general price index and the translation of these items applying the period-end exchange rate. The Company considers that the quantitative and qualitative aspects of any aggregated operating segments (that is, Central America and Caribbean reportable segments) are similar in nature for all periods presented. In evaluating the appropriateness of aggregating operating segments, the key indicators considered included but were not limited to: (i) the similarity of key financial statements measures and trends, (ii) all entities provide telecommunications services, (iii) similarities of customer base and services, (iv) the methods to distribute services are the same, based on telephone plant in both cases, wireless and fixed lines, (v) similarities of governments and regulatory entities that oversee the activities and services of telecom companies, (vi) inflation trends, and (vii) currency trends. Mexico Telmex Brazil Southern Cone Colombia Andean Central U.S.A.(1) Caribbean Europe Eliminations Consolidated As of and for the year ended December 31, 2019 (in Ps.): External revenues 226,164,231 84,173,980 177,596,077 54,230,682 74,274,684 55,440,675 46,602,036 — 34,580,822 98,420,289 — 851,483,476 Intersegment revenues 11,676,015 11,863,364 4,182,248 11,041,705 361,386 92,249 132,061 — 1,136,879 — (40,485,907 ) — Total revenues 237,840,246 96,037,344 181,778,325 65,272,387 74,636,070 55,532,924 46,734,097 — 35,717,701 98,420,289 (40,485,907 ) 851,483,476 Depreciation and amortization 24,742,622 16,346,927 39,424,474 13,847,506 13,439,489 10,256,129 11,045,817 — 6,322,648 24,975,146 (2,881,971 ) 157,518,787 Operating income (loss) 67,694,409 9,731,852 28,846,565 4,007,614 15,324,977 8,023,002 5,712,068 — 5,741,368 8,687,862 (9,971,433 ) 143,798,284 Interest income 23,713,455 1,839,973 3,155,681 896,256 1,306,571 1,283,788 532,046 — 1,478,560 115,359 (28,037,017 ) 6,284,672 Interest expense 30,972,658 1,439,785 19,021,965 3,849,318 2,952,123 2,422,887 1,406,720 — 1,435,862 2,220,168 (27,810,532 ) 37,910,954 Income tax 30,000,511 1,528,229 4,251,116 2,022,336 5,405,452 1,681,159 2,355,380 — 719,774 1,946,255 3,843 49,914,055 Equity interest in net income (loss) of associated companies (3,732 ) 46,789 (1,538 ) (23,424 ) — — (28,795 ) — — (6,909 ) — (17,609 ) Net profit (loss) attributable to equity holders of the parent continues operations 42,598,946 (1,705,068 ) 5,618,095 (6,984 ) 9,571,046 (2,604,646 ) 2,335,963 — 4,312,630 5,051,145 (7,285,126 ) 57,886,001 Net profit (loss) attributable to equity holders of the parent discontinued operations — — — — — — — — — — — 9,844,889 Net profit (loss) attributable to equity holders of the parent 42,598,946 (1,705,068 ) 5,618,095 (6,984 ) 9,571,046 (2,604,646 ) 2,335,963 — 4,312,630 5,051,145 2,559,763 67,730,890 Assets by segment 915,233,048 201,283,526 382,561,753 132,722,497 115,851,227 94,021,632 77,355,732 30,775,893 100,694,650 191,744,924 (710,311,225 ) 1,531,933,657 Plant, property and equipment, net 54,589,459 106,869,482 174,761,167 60,537,650 50,133,642 39,068,450 38,934,747 1,405,755 38,223,641 75,707,738 (888,361 ) 639,343,370 Goodwill 27,396,393 215,381 25,379,805 5,241,305 12,124,685 4,895,331 7,289,748 3,220,105 14,186,723 52,950,325 — 152,899,801 Trademarks, net 46,476 212,324 37,207 — — — — 369,950 227,156 2,595,596 — 3,488,709 Licenses and rights, net 11,087,882 452,504 29,324,718 12,103,980 5,530,422 8,064,487 4,390,547 — 7,942,670 25,951,335 — 104,848,545 Investment in associated companies 3,562,323 610,807 111,073 (7,806 ) 391 — 25,603 — — — (1,828,198 ) 2,474,193 Liabilities by segments 718,354,229 175,774,964 297,877,328 103,330,525 55,576,253 55,463,339 37,993,180 31,557,816 54,276,868 124,319,541 (349,497,251 ) 1,305,026,792 (1) Restated for discontinued operations. Mexico Telmex Brazil Southern Cone Colombia Andean Central U.S.A. (1) Caribbean Europe Eliminations Consolidated As of and for the year ended December 31, 2020 (in Ps.): External revenues 214,578,600 77,920,910 163,865,421 55,484,744 77,282,658 53,846,358 48,073,436 — 37,182,842 111,472,191 — 839,707,160 Intersegment revenues 17,663,525 13,668,264 4,207,466 1,220,100 352,694 88,305 121,580 — 1,440,983 — (38,762,917 ) — Total revenues 232,242,125 91,589,174 168,072,887 56,704,844 77,635,352 53,934,663 48,195,016 — 38,623,825 111,472,191 (38,762,917 ) 839,707,160 Depreciation and amortization 24,748,756 13,341,479 41,795,397 13,095,004 14,413,760 11,447,356 14,355,899 — 7,094,331 25,593,204 (3,202,788 ) 162,682,398 Operating income (loss) 70,851,525 11,204,433 25,203,504 1,877,079 15,111,947 8,698,645 4,004,501 — 6,701,086 13,159,865 (11,309,206 ) 145,503,379 Interest income 21,322,406 1,479,021 2,904,430 980,581 822,447 1,049,261 1,130,767 — 1,105,420 90,746 (25,823,043 ) 5,062,036 Interest expense 30,936,195 1,306,867 17,976,227 3,334,966 2,586,708 2,223,478 1,559,917 — 1,658,619 2,546,255 (25,467,747 ) 38,661,485 Income tax 4,905,863 577,178 (4,442,598 ) 992,831 2,078,789 3,115,693 1,518,953 — 2,524,214 2,234,065 4,282 13,509,270 Equity interest in net income (loss) of associated companies (3,820 ) 23,955 (2,972 ) (15,422 ) — — — — — (288,747 ) — (287,006 ) Net profit (loss) attributable to equity holders of the parent continues operations 3,613,907 (1,085,038 ) 4,963,424 1,456,062 16,579,303 4,649,047 1,919,558 — 3,294,111 7,777,426 (13,307,820 ) 29,859,980 Net profit (loss) attributable to equity holders of the parent discontinued operations — — — — — — — — — — — 16,992,625 Net profit (loss) attributable to equity holders of the parent 3,613,907 (1,085,038 ) 4,963,424 1,456,062 16,579,303 4,649,047 1,919,558 — 3,294,111 7,777,426 3,684,805 46,852,605 Assets by segment 947,396,510 203,081,314 386,982,711 118,266,380 132,210,369 101,717,708 88,690,683 35,083,285 109,914,293 239,583,759 (737,878,785 ) 1,625,048,227 Plant, property and equipment, net 52,117,395 110,751,083 145,307,497 62,157,797 48,876,853 36,102,261 37,855,227 1,761,595 39,128,447 82,595,077 (876,229 ) 615,777,003 Revalued of assets — — 36,076,207 7,494,408 12,893,284 9,500,708 7,059,247 — 2,572,504 31,556,270 — 107,152,628 Goodwill 26,949,185 215,381 16,048,092 5,436,675 12,253,743 4,866,363 6,345,659 3,362,899 14,186,723 53,388,139 — 143,052,859 Trademarks, net 126,823 181,094 — — — — — 269,325 219,087 2,981,089 — 3,777,418 Licenses and rights, net 12,017,318 100,623 26,171,345 12,099,873 12,363,039 6,870,531 5,427,857 — 8,616,880 27,963,250 — 111,630,716 Investment in associated companies 51,645 613,449 64,125 (20,970 ) 395 — 25,413 — — — 1,095,703 1,829,760 Liabilities by segments 725,408,198 193,840,756 263,989,566 61,786,265 63,610,642 53,379,366 34,252,511 33,141,315 60,839,340 138,747,621 (319,064,971 ) 1,309,930,609 (1) Restated for discontinued operations. Mexico Telmex Brazil Southern Cone Colombia Andean Central Caribbean Europe Eliminations Consolidated As of and for the year ended December 31, 2021 (in Ps.): External revenues 225,219,719 87,189,642 148,729,232 62,030,033 79,312,071 52,888,323 48,468,386 37,858,979 113,838,486 — 855,534,871 Intersegment revenues 18,041,465 15,237,420 4,044,386 329,000 360,638 73,828 98,530 2,069,648 — (40,254,915 ) — Total revenues 243,261,184 102,427,062 152,773,618 62,359,033 79,672,709 52,962,151 48,566,916 39,928,627 113,838,486 (40,254,915 ) 855,534,871 Depreciation and amortization 25,797,791 12,740,332 40,342,871 14,996,243 15,067,211 11,211,523 11,962,486 6,987,129 27,469,463 (3,948,183 ) 162,626,866 Operating income (loss) 77,783,972 21,100,316 21,867,457 2,144,825 15,165,356 7,457,802 8,216,945 8,661,475 13,421,147 (9,686,654 ) 166,132,641 Interest income 14,864,242 758,126 2,104,574 821,594 431,314 833,540 269,379 701,785 116,031 (17,065,758 ) 3,834,827 Interest expense 24,586,641 1,385,103 15,875,138 2,987,751 2,240,707 1,213,421 1,219,061 1,066,733 2,414,415 (16,963,658 ) 36,025,312 Income tax 25,002,390 2,496,010 (9,603,701 ) (3,795,160 ) 3,112,946 2,375,281 2,945,700 2,171,594 3,438,161 1,548 28,144,769 Equity interest in net income (loss) of associated companies 85,648 44,525 4,575 (19,073 ) — — — — (1,757 ) — 113,918 Net profit (loss) attributable to equity holders of the parent continues operations 34,195,093 4,594,450 14,185,905 415,994 5,959,563 4,180,473 4,099,930 5,151,166 8,313,018 (10,383,143 ) 70,712,449 Net profit (loss) attributable to equity holders of the parent discontinued operations — — — — — — — — — — 121,710,718 Net profit (loss) attributable to equity holders of the parent 34,195,093 4,594,450 14,185,905 415,994 5,959,563 4,180,473 4,099,930 5,151,166 8,313,018 (10,383,143 ) 192,423,167 Assets by segment 999,502,407 195,869,232 407,458,440 135,862,040 133,232,525 95,719,937 101,725,955 102,949,901 210,944,575 (693,615,163 ) 1,689,649,849 Plant, property and equipment, net 50,420,866 118,056,718 153,607,199 64,864,986 48,888,907 34,395,339 42,407,727 41,601,009 79,764,422 (983,169 ) 633,024,004 Revalued of assets — — 33,004,669 6,159,077 10,266,464 8,389,460 9,113,632 2,564,149 28,675,224 — 98,172,675 Goodwill 26,965,618 215,381 15,335,322 5,191,841 11,685,585 4,688,154 6,002,380 14,186,723 52,307,190 — 136,578,194 Trademarks, net 90,673 149,865 — — — — — 229,000 2,822,625 — 3,292,163 Licenses and rights, net 11,081,972 129,233 39,620,009 13,791,003 11,384,533 5,502,139 5,220,437 10,847,685 25,709,849 — 123,286,860 Investment in associated companies 4,725,279 522,403 65,699 (34,401 ) 351 — 26,348 — — (2,253,198 ) 3,052,481 Liabilities by segments 679,954,783 176,177,522 273,655,967 72,702,285 65,631,866 44,676,727 42,823,861 53,885,848 134,357,142 (308,257,878 ) 1,235,608,123

Recently Issued Accounting Stan

Recently Issued Accounting Standards	12 Months Ended
	Dec. 31, 2021
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Recently Issued Accounting Standards	24. Recently Issued Accounting Standards New and amended standards and interpretations The Company applied for the first-time certain standards and amendments, which are effective for annual periods beginning on or after January 1, 2021. The Company has not early adopted any other standard, interpretation or amendment that has been issued but is not yet effective. Interest Rate Benchmark Reform – Phase 2: Amendments to IFRS 9, IAS 39, IFRS 7, IFRS 4 and IFRS 16. The amendments provide temporary reliefs which address the financial reporting effects when an interbank offered rate (IBOR) is replaced with an alternative nearly risk-free interest rate (RFR). The amendments include the following practical expedients: • To require contractual changes, or changes to cash flows that are directly required by the reform, to be treated as changes to a floating interest rate, equivalent to a movement in a market rate of interest • To permit changes required by IBOR reform to be made to hedge designations and hedge documentation without the hedging relationship being discontinued • To provide temporary relief to entities from having to meet the separately identifiable requirement when an RFR instrument is designated as a hedge of a risk component These amendments had no impact on the consolidated financial statements of the Company. The Company intends to use the practical expedients in future periods if they become applicable. COVID-19-Related On 28 May 2020, the IASB issued COVID-19-Related COVID-19 COVID-19 COVID-19 The amendment was intended to apply until 30 June 2021, but as the impact of the COVID-19 The amendment applies to annual reporting periods beginning on or after 1 April 2021; however, the Company has not received COVID-19-related New standards, amendments and interpretations not yet effective The new and amended standards and interpretations that are issued, but not yet effective, up to the date of issuance of the Company’s financial statements are disclosed below. The Company intends to adopt these new and amended standards and interpretations, if applicable, when they become effective. Amendments to IAS 1: Classification of Liabilities as Current or Non-current In January 2020, the IASB issued amendments to paragraphs 69 to 76 of IAS 1 to specify the requirements for classifying liabilities as current or non-current. • What is meant by a right to defer settlement • That a right to defer must exist at the end of the reporting period • That classification is unaffected by the likelihood that an entity will exercise its deferral right • That only if an embedded derivative in a convertible liability is itself an equity instrument would the terms of a liability not impact its classification The amendments are effective for annual reporting periods beginning on or after January 1, 2023 and must be applied retrospectively. The Company is currently assessing the impact the amendments will have on current practice and whether existing loan agreements may require renegotiation; however, the amendments are not expected to have a material impact on the Company. Reference to the Conceptual Framework – Amendments to IFRS 3 In May 2020, the IASB issued Amendments to IFRS 3 Business Combinations – Reference to the Conceptual Framework. The amendments are intended to replace a reference to the Framework for the Preparation and Presentation of Financial Statements, issued in 1989, with a reference to the Conceptual Framework for Financial Reporting issued in March 2018 without significantly changing its requirements. The Board also added an exception to the recognition principle of IFRS 3 to avoid the issue of potential ‘day 2’ gains or losses arising for liabilities and contingent liabilities that would be within the scope of IAS 37 or IFRIC 21 Levies, if incurred separately. At the same time, the Board decided to clarify existing guidance in IFRS 3 for contingent assets that would not be affected by replacing the reference to the Framework for the Preparation and Presentation of Financial Statements. The amendments are effective for annual reporting periods beginning on or after January 1, 2022 and apply prospectively. Property, Plant and Equipment: Proceeds before Intended Use – Amendments to IAS 16 In May 2020, the IASB issued Property, Plant and Equipment – Proceeds before Intended Use, which prohibits entities deducting from the cost of an item of property, plant and equipment, any proceeds from selling items produced while bringing that asset to the location and condition necessary for it to be capable of operating in the manner intended by management. Instead, an entity recognizes the proceeds from selling such items, and the costs of producing those items, in profit or loss. The amendment is effective for annual reporting periods beginning on or after January 1, 2022 and must be applied retrospectively to items of property, plant and equipment made available for use on or after the beginning of the earliest period presented when the entity first applies the amendment. The amendments are not expected to have a material impact on the Company. Onerous Contracts – Costs of Fulfilling a Contract – Amendments to IAS 37 In May 2020, the IASB issued amendments to IAS 37 to specify which costs an entity needs to include when assessing whether a contract is onerous or loss-making. The amendments apply a “directly related cost approach”. The costs that relate directly to a contract to provide goods or services include both incremental costs and an allocation of costs directly related to contract activities. General and administrative costs do not relate directly to a contract and are excluded unless they are explicitly chargeable to the counterparty under the contract. The amendments are effective for annual reporting periods beginning on or after January 1, 2022. The Company will apply these amendments to contracts for which it has not yet fulfilled all its obligations at the beginning of the annual reporting period in which it first applies the amendments. IFRS 1 First-time Adoption of International Financial Reporting Standards – Subsidiary as a first-time adopter As part of its 2018-2020 annual improvements to IFRS standards process, the IASB issued an amendment to IFRS 1 First-time Adoption of International Financial Reporting Standards. The amendment permits a subsidiary that elects to apply paragraph D16(a) of IFRS 1 to measure cumulative translation differences using the amounts reported by the parent, based on the parent’s date of transition to IFRS. This amendment is also applied to an associate or joint venture that elects to apply paragraph D16(a) of IFRS 1. The amendment is effective for annual reporting periods beginning on or after January 1, 2022 with earlier adoption permitted. IFRS 9 Financial Instruments – Fees in the ’10 per cent’ test for derecognition of financial liabilities As part of its 2018-2020 annual improvements to IFRS standards process the IASB issued amendment to IFRS 9. The amendment clarifies the fees that an entity includes when assessing whether the terms of a new or modified financial liability are substantially different from the terms of the original financial liability. These fees include only those paid or received between the borrower and the lender, including fees paid or received by either the borrower or lender on the other’s behalf. An entity applies the amendment to financial liabilities that are modified or exchanged on or after the beginning of the annual reporting period in which the entity first applies the amendment. The amendment is effective for annual reporting periods beginning on or after January 1, 2022 with earlier adoption permitted. The amendments are not expected to have a material impact on the Company. Definition of Accounting Estimates – Amendments to IAS 8 In February 2021, the IASB issued amendments to IAS 8, in which it introduces a definition of ‘accounting estimates’. The amendments clarify the distinction between changes in accounting estimates and changes in accounting policies and the correction of errors. Also, they clarify how entities use measurement techniques and inputs to develop accounting estimates. The amendments are effective for annual reporting periods beginning on or after January 1, 2023 and apply to changes in accounting policies and changes in accounting estimates that occur on or after the start of that period. Earlier application is permitted as long as this fact is disclosed. The amendments are not expected to have a material impact on the Company. Disclosure of Accounting Policies – Amendments to IAS 1 and IFRS Practice Statement 2 In February 2021, the IASB issued amendments to IAS 1 and IFRS Practice Statement 2 Making Materiality Judgements, in which it provides guidance and examples to help entities apply materiality judgements to accounting policy disclosures. The amendments aim to help entities provide accounting policy disclosures that are more useful by replacing the requirement for entities to disclose their ‘significant’ accounting policies with a requirement to disclose their ‘material’ accounting policies and adding guidance on how entities apply the concept of materiality in making decisions about accounting policy disclosures. The amendments to IAS 1 are applicable for annual periods beginning on or after January 1, 2023 with earlier application permitted. Since the amendments to the Practice Statement 2 provide non-mandatory guidance on the application of the definition of material to accounting policy information, an effective date for these amendments is not necessary. The Company is currently assessing the impact of the amendments to determine the impact they will have on the Company’s accounting policy disclosures.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2021
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Subsequent Events	25. Subsequent Events a) In July 2020, the Company announced that its Brazilian subsidiary, Claro S.A. (“Claro”), agreed to extend and amend the binding offer submitted, jointly with Telefónica Brasil S.A. (“Telefonica”) and TIM S.A. (“TIM”), for the acquisition of the mobile business owned by Oi Group, in the amount of R $ million. Such joint offer contemplated, additionally, the possibility of entering into long term agreements for the use of infrastructure with Oi Group. The offer was submitted by the parties, and is subject to certain conditions, including their right to make a higher bid than another offer potentially presented by a third party (“right to top”) in the competitive process of Oi Group’s mobile business sale. Therefore, Claro believes that the joint offer with TIM and Telefonica is the one that best serves the interests of current customers of Oi, as it provides long-term experience in the Brazilian market, investment capacity and technical innovation to the sector as a whole; besides being in line with current regulation. On February 9, 2022, the Company announced that Brazil’s antitrust authority had approved the sale. This closed on b) On March 18, 2022, the Company entered into a credit agreement providing for borrowings in an amount up to Ps.20,558,500 with a group of lenders and BBVA México, S.A., Institución de Banca Múltiple, Grupo Financiero BBVA México, as administrative agent for the lenders (the “Sitios Credit Facility”). The full principal amount available under the Sitios Credit Facility was disbursed on March 23, 2022. Under this credit agreement, the Company is an initial co-borrower with Torres Latinoamérica, S.A. de C.V. (“Torres”). In connection with the spin-off (through an escisión) by the Company of certain of its telecommunications towers and other associated passive infrastructure outside of Mexico to a new company (the “Sitios Spin-off”) to be named Sitios Latinoamérica, S.A.B. de C.V. (“Sitios”), on the date on which Sitios is duly incorporated in accordance with Mexican law, pursuant to the resolutions approved by the shareholders of the Company in the extraordinary shareholders’ meeting dated as of September 29, 2021, the Company will be released from its obligations under the Sitios Credit Facility and all liabilities with respect thereto will be transferred to Sitios, and Sitios will assume all of our obligations thereunder. After such date, Torres will continue to be a co-borrower under the Sitios Credit Facility and Torres do Brasil S.A. will become a guarantor thereunder. c) In April 2022, the Company issued a bond for a total of U.S.$ 1 billion at a rate of 5.375% maturing in 2032. América Móvil plans to transfer, through the spin-off, the total amount of the bonds to Sitios and any obligation of the Company with respect to the Sitios notes will be extinguished. d) On April 14, 2022, the Company acquired a loan of 1,640.8 million reais maturing in 2023 at a rate of 13.32%.

Basis of Preparation of the C_2

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices (Policies)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Basis of preparation	a) Basis of preparation The accompanying consolidated financial statements have been prepared in conformity with International Financial Reporting Standards, as issued by the International Accounting Standards Board (“IASB”) (hereafter referred to as IFRS). The consolidated financial statements have been prepared on the historical cost basis, except for the derivative financial instruments, the mobile telecommunications towers, the trust assets of post-employment and other employee benefit plans and the investments in equity at fair value through other comprehensive income (OCI), which are presented at their market value. Effective July 1, 2018, the Argentinian economy has been considered to be hyperinflationary in accordance with the criteria in IAS 29 “Financial Reporting in Hyperinflationary Economies” (“IAS 29”). Accordingly, for the Argentinian subsidiaries, we have included adjustments for hyperinflation and reclassifications as is required by the standard for purposes of presentation of IFRS in the consolidated financial statements. The preparation of these consolidated financial statements under IFRS requires the use of critical estimates and assumptions that affect the amounts reported for certain assets, liabilities, income and expenses, including the main impact generated by the COVID-19 pandemic and the potential effect on the amounts disclosed in the consolidated financial statements. It also requires that management exercise judgment in the application of the Company’s accounting policies. Actual results could differ from these estimates and assumptions. The Mexican peso is the functional currency of the Company’s Mexican operations and the consolidated reporting currency of the Company. i) Changes in Accounting Policies and Disclosures As of December 31, 2020, the company changed its accounting policy to record the value of the passive infrastructure (towers) of its subsidiaries. With the change, this passive infrastructure was no longer recognized at historical cost and it began to be recognized under the revaluation model (market value). The company considers that the revaluation model represents the actual conditions of the industry of this class of assets and improves its financial position, this allows its shareholders and stakeholders to have the necessary financial information associated with market expectations about this class of assets. ii) Basis of consolidation The consolidated financial statements include the accounts of América Móvil, S.A.B. de C.V. and those subsidiaries over which the Company exercises control. The consolidated financial statements for the subsidiaries were prepared for the same period as the Company´s and applying consistent accounting policies. All of the subsidiary companies operate in the telecommunications sector or related. Subsidiaries are entities over which the Company has control. Control is achieved when the Company has power over the investee, when it is exposed to, or has rights to, variable returns from its involvement with the investee, and has the ability to use its power over the investee to affect the amount of the investor’s returns. Subsidiaries are consolidated on a line-by-line basis from the date which control is achieved by the Company. The Company reassesses whether or not it controls an investee if facts and circumstances indicate that there are changes to one or more of the elements of control. On March 6, 2020, in accordance with a resolution of the Federal Telecommunications Institute (Instituto Federal de Telecomunicaciones or IFT), the subsidiaries Teléfonos de México, S.A.B. de C.V. and Teléfonos del Noroeste, S.A. de C.V. created separate companies related to the wholesale services named Red Nacional Última Milla S.A.P.I. de C.V., Servicios de Telecomunicaciones Ultima Milla, S.A. de C.V. and Red Última Milla del Noroeste S.A.P.I. de C.V. The restructuring of Telmex has no impact o Changes in the Company’s ownership interests in a subsidiary that do not result in the Company losing control over the subsidiary are accounted for as equity transactions. The carrying amounts of the equity attributable to owners of the parent and non-controlling interests are adjusted to reflect the changes in their relative interests in the subsidiary. Any difference between the carrying amount of the non-controlling interests and the fair value of the consideration paid or received in the transaction is recognized directly in the equity attributable to the owners. Subsidiaries are deconsolidated from the date which control ceases. When the Company ceases to have control over a subsidiary, it derecognizes the assets (including any goodwill) and liabilities of the subsidiary at their carrying amounts, derecognizes the carrying amount of non-controlling interests in the former subsidiary and recognizes the fair value of any consideration received from the transaction. Any retained interest in the former subsidiary is then remeasured to its fair value. All intra-Company balances and transactions, and any unrealized gains and losses arising from intra-Company transactions, are eliminated in preparing the consolidated financial statements. Non-controlling interests represent the portion of profits or losses and net assets not held by the Company. Non-controlling interests are presented separately in the consolidated statements of comprehensive income and in equity in the consolidated statements of financial position separately from Company’s own equity. Associates: An associate is an entity over which the Company has significant influence. Significant influence is the power to participate in the financial and operating policy decisions of the investee but does not have control or joint control over those decisions. The Company’s investment in associates includes goodwill identified on acquisition, net of any accumulated impairment losses. The investments in associated companies in which the Company exercises significant influence are accounted for using the equity method, whereby Company recognizes its share in the net profit (losses) and equity of the associate. The results of operations of the subsidiaries and associates are included in the Company’s consolidated financial statements beginning as of the month following their acquisition and its share of other comprehensive income after acquisition is recognized directly in other comprehensive income. The Company assesses at each reporting date whether there is objective evidence that investment in associates is impaired. If so, the Company calculates the amount of impairment as the difference between the recoverable amount of the associate and its carrying value. The equity interest in the most significant subsidiaries at December 31, 2020 and 2021 is as follows: Company name Country Equity 2020 2021 Subsidiaries: América Móvil B.V. a) Netherlands 100.0 % 100.0 % Compañía Dominicana de Teléfonos, S.A. (“Codetel”) b) Dominican Republic 100.0 % 100.0 % Sercotel, S.A. de C.V. a) Mexico 100.0 % 100.0 % Radiomóvil Dipsa, S.A. de C.V. and subsidiaries (“Telcel”) b) Mexico 100.0 % 100.0 % Puerto Rico Telephone Company, Inc. b) Puerto Rico 100.0 % 100.0 % Servicios de Comunicaciones de Honduras, S.A. de C.V. (“Sercom Honduras”) b) Honduras 100.0 % 100.0 % TracFone Wireless, Inc. (“TracFone”) b) c) USA 100.0 % — Claro S.A. (Claro Brasil) b) Brazil 98.2 % 98.2 % NII Brazil Holding S.A.R.L a) Luxembourg 100.0 % 100.0 % Nextel Telecomunicações Ltda b) Brazil 100.0 % 100.0 % Telecomunicaciones de Guatemala, S.A. (“Telgua”) b) Guatemala 99.3 % 99.3 % Claro Guatemala, S.A. b) Guatemala 100.0 % 100.0 % Empresa Nicaragüense de Telecomunicaciones, S.A. (“Enitel”) b) Nicaragua 99.6 % 99.6 % Compañía de Telecomunicaciones de El Salvador, S.A. de C.V. (“CTE”) b) El Salvador 95.8 % 95.8 % Comunicación Celular, S.A. (“Comcel”) b) Colombia 99.4 % 99.4 % Consorcio Ecuatoriano de Telecomunicaciones, S.A. (“Conecel”) b) Ecuador 100.0 % 100.0 % AMX Argentina, S.A. b) Argentina 100.0 % 100.0 % AMX Paraguay, S.A. b) Paraguay 100.0 % 100.0 % AM Wireless Uruguay, S.A. b) Uruguay 100.0 % 100.0 % Claro Chile, S.A. b) Chile 100.0 % 100.0 % América Móvil Perú, S.A.C b) Peru 100.0 % 100.0 % Claro Panamá, S.A. b) Panamá 100.0 % 100.0 % Teléfonos de México, S.A.B. de C.V. b) Mexico 98.8 % 98.8 % Telekom Austria AG b) Austria 51.0 % 51.0 % a) Holding companies b) Operating companies of mobile and fixed services c) On November 23, 2021, this entity was discontinued operations. See Note 2Ac. iii) Basis of translation of financial statements of foreign subsidiaries and associated companies The operating revenues of foreign subsidiaries jointly represent approximately 65%, 66% and 64% of consolidated operating revenues for the years ended December 31, 2019, 2020 and 2021, respectively, and their total assets jointly represent approximately 75% and 70% of consolidated total assets at December 31, 2020 and 2021, respectively. The financial statements of foreign subsidiaries have been prepared under or converted to IFRS in the respective local currency (which is their functional currency) and then translated into the Company´s reporting currency as follows: • all monetary assets and liabilities were translated at the closing exchange rate of the period; • all non-monetary assets and liabilities at the closing exchange rate of the period; • equity accounts are translated at the exchange rate at the time the capital contributions were made and the profits were generated; • revenues, costs and expenses are translated at the average exchange rate of the period, except for the operations of the subsidiaries in Argentina, whose economy is considered hyperinflationary since 2018; • the consolidated statements of cash flows presented using the indirect method were translated using the weighted-average exchange rate for the applicable period (except for Argentina), and the resulting difference is shown in the consolidated statements of cash flows under the heading “Adjustment to cash flows due to exchange rate fluctuations, net”. The basis of translation for the operations of the subsidiaries in Argentina are described: In recent years, the Argentina economy has shown high rates of inflation. Although inflation data has not been consistent in recent years and several indexes have coexisted, inflation in Argentina indicates that the three-year cumulative inflation rate exceeded 100% in 2018, which is one of the quantitative references established by IAS 29. As a result, Argentina was considered a hyperinflationary economy in 2018 and the Company applies hyperinflation accounting to its subsidiary whose functional currency is the Argentine peso for financial information for periods ending on or after July 1, 2018, however the calculation of the cumulative impact was measured as of January 1, 2018. In order to restate for hyperinflation its financial statements, the subsidiary used the series of indices defined by resolution JG No. 539/18 issued by the “Federación Argentina de Consejos Profesionales de Ciencias Económicas” (“FACPCE”), based on the National Consumer Price Index (IPC) published by the Instituto Nacional de Estadística y Censos (INDEC) of the Argentine Republic and the Wholesale Internal Price Index (IPIM) published by FACPCE. The cumulative index at December 31, 2021 is 582.4575, while on an annual inflation for 2021 is 50.9%. The main implications are as follows: • Adjustment of the historical cost of non-monetary assets and liabilities and equity items from their date of acquisition, or the date of inclusion in the consolidated statements of financial position, to the end of the year, in order to reflect changes in the currency’s purchasing power caused by inflation. • The gain on the net monetary position caused by the impact of inflation in the year is included in the consolidated statements of comprehensive income as part of the caption “ Valuation of derivatives, interest cost from labor obligations and other financial items, net ” • All items in the financial statements of the Argentine company are translated at the closing exchange rate, which at December 31, 2020 and 2021 were 0.2371 and 0.2004, respectively, per argentine peso per Mexican peso. The difference resulting from the translation process is recognized in equity in the caption “Effect of translation of foreign entities”. At December 31, 2020 and 2021, the cumulative translation adjustment was Ps. (100,926,140) and Ps. (104,270,295), respectively.
Revenue recognition	b) Revenue recognition The Company revenues are derived principally from providing the following telecommunications services and products: wireless voice, wireless data and value-added services, fixed voice, fixed data, broadband and IT services, Pay TV and over-the-top (“OTT”) services. The Company provides fixed and mobile services. These services are offered independently in contracts with customers or together with the sale of handsets (mobile) under the postpaid model. In accordance with IFRS 15 “Revenues from contracts with customers” The Company with respect to the provided services, it has market observable information, to determine the standalone selling price of the services. On the other hand, in the case of the sale of bundled mobile phones sold (including service and handset) by the Company, the allocation of the sales is done based on their relative standalone selling price of each individual component related to the total bundled price. The result is that more equipment revenue is recognized at the moment of a sale and, therefore, less service revenue from the monthly fee is being recognized under IFRS 15. The services provided by the Company are satisfied over the time of the contract period, given that the customer simultaneously receives and consumes the benefits provided by the Company. Such service bundles, voice and data, accomplish the criteria mentioned in IFRS 15 of being substantially similar and of having the same transfer pattern which is why the Company concluded that the revenue from these different services offered to its customers are considered as a single performance obligation with revenue being recognized over time, except for sales of equipment. Under IFRS 15, for those contracts with customers in which generally the sale of equipment and other electronic equipment is a single performance obligation, the Company recognizes the revenue at the moment when it transfers control to the customer which generally occurs when such goods are delivered. The commissions are considered incremental contract acquisition costs that are capitalized and are amortized over the expected period of benefit, during the average duration of customer contracts. Some subsidiaries have loyalty programs where the Company awards credits customer credit awards referred as “points”. The customer can redeem accrued “points” for awards such as devices, accessories or airtime. The Company provides all awards. The consideration allocated to the award credits is identified as a separate performance obligation; the corresponding liability of the award credits is measured at its fair value. The consideration allocated to award credits amount is recognized as a contract liability until the points are redeemed. Revenue is recognized upon redemption of products by the customer.
Cost of sales	c) Cost of sales The cost of mobile equipment and computers is recognized at the time the client and distributor receive the device which is when the control is are transferred to the customer.
Cost of services	d) Cost of services The cost of services represents the costs incurred to properly deliver the services to the customers, it includes the network operating costs and licenses related costs and is accounted at the moment in which such services are provided.
Commissions to distributors	e) Commissions to distributors The Company pays commissions to its distributors different than those that acquire customers. Such commissions are recognized in “commercial, administrative and general expenses”
Cash and cash equivalents	f) Cash and cash equivalents Cash and cash equivalents represent bank deposits and liquid investments with maturities of less than three months. These amounts are stated at cost plus accrued interest, which is similar to their market value. The Company also maintains restricted cash held as collateral to meet certain contractual obligations. Restricted cash is presented as part of “Other assets” within other non-current financial assets given that the restrictions are long-term in nature. See Note 9.
Equity investments at fair value through OCI and other short/long-term investments	g) Equity investments at fair value through OCI and other short/long-term investments Equity investments at fair value through OCI and other short-term investments are primarily composed of equity investments and other short-term financial investments. Amounts are initially recorded at their estimated fair value. Fair value adjustments for equity investments are recorded through other comprehensive income, and other short-term investment.
Inventories	h) Inventories Inventories are initially recognized at historical cost and are valued using the average cost method without exceeding their net realizable value. The estimate of the realizable value of inventories on-hand is based on their age and turnover.
Business combinations and goodwill	i) Business combinations and goodwill Business combinations are accounted for using the acquisition method, which in accordance with IFRS 3, “ Business acquisitions (i) Identify the acquirer (ii) Determine the acquisition date (iii) Value the acquired identifiable assets and assumed liabilities (iv) Recognize the goodwill or a bargain purchase gain For acquired subsidiaries, goodwill represents the difference between the purchase price and the fair value of the net assets acquired at the acquisition date. The investment in acquired associates includes goodwill identified on acquisition, net of any impairment loss. Goodwill is reviewed annually to determine its recoverability or more often if circumstances indicate that the carrying value of the goodwill might not be fully recoverable. The possible loss of value in goodwill is determined by analyzing the recovery value of the cash generating unit (or the group thereof) to which the goodwill is associated at the time it was originated. If this recoverable amount is lower than the carrying value, an impairment loss is charged to the results of operations. The recoverable amount is determined based on the higher of fair value less cost of disposal or value in use. For the years ended December 31, 2019, 2020 and 2021, no impairment losses were recognized for goodwill.
Property, plant and equipment	j) Property, plant and equipment i) Property, plant and equipment are recorded at acquisition cost, net of accumulated depreciation; except for the passive infrastructure of telecommunications towers, which are recognized under the revaluation model as of December 31, 2020. Depreciation is computed on the cost of assets using the straight line method, based on the estimated useful lives of the related assets, beginning the month after they become available for use. Borrowing costs that are incurred for general financing for construction in progress for periods exceeding six months are capitalized as part of the cost of the asset. During the years ended December 31, 2019, 2020 and 2021, borrowing costs that were capitalized amounted to Ps. 2,233,358, Ps. 1,771,613 and Ps.1,527,259 respectively. In addition to the purchase price and costs directly attributable to preparing an asset in terms of its physical location and condition for operating as intended by management, when required, the cost also includes the estimated costs of dismantling and removal of the asset and for restoration of the site where it is located. See Note 16c. The passive infrastructure of telecommunications towers will be recorded at revalued value, which is its fair value at the time of revaluation less accumulated depreciation; if there is any loss or impairment, it must also be considered within its value. The revaluations will be calculated with sufficient regularity to ensure that the book value, every time, does not differ significantly from that which could be determined using the fair value at the end of the reporting period. The increase resulting from a revaluation is recorded in other comprehensive income (OCI) and is accumulated in equity as a revaluation surplus. To the extent that there is a decrease in revaluation, it will be recognized in profit or loss, except to the extent that it compensates for an existing surplus on the same asset. An annual transfer of the asset revaluation surplus and accumulated earnings is made to the extent that the asset is used, therefore, the surplus is equal to the difference between the depreciation calculated on the revalued value and the one calculated according to its original cost. These transfers do not record in the results for the period. A total transfer of the surplus may be made when the entity disposes of the asset. ii) The net book value of property, plant and equipment is removed from the consolidated statements of financial position at the time the asset is sold or when no future economic benefits are expected from its use or sale. Any gains or losses on the sale of property, plant and equipment represent the difference between net proceeds of the sale and the net book value of the item at the time of sale. These gains or losses are recognized as either other operating income or other operating expenses upon sale. iii) The Company periodically assesses the residual values, useful lives and depreciation methods associated with its property, plant and equipment. If necessary, the effects of any changes in accounting estimates is recognized prospectively, at the closing of each period, in accordance with IAS 8, “ Accounting Policies, Changes in Accounting Estimates and Errors For property, plant and equipment made up of several components with different useful lives, the major individual components are depreciated over their individual useful lives. Maintenance costs and repairs are expensed as incurred. Annual depreciation rates are as follows: Network infrastructure 5%-33% Buildings and leasehold improvement 2%-33% Other assets 10%-50% iv) The carrying value of property, plant and equipment is reviewed if there are indicators of impairment in such assets. If an asset’s recovery value is less than the asset’s net carrying value, the difference is recognized as an impairment loss. During the years ended December 31, 2019, 2020 and 2021, no impairment losses were recognized. v) Spare parts for network operation are recognized at cost. The valuation of inventory for network considered obsolete, defective or slow-moving, is reduced to their estimated net realizable value. The estimate of the recovery value of inventories is based on their age and turnover.
Intangibles	k) Intangibles i) Licenses Licenses to operate wireless telecommunications networks granted by the governments of the countries in which the Company operates are recorded at acquisition cost or at fair value at their acquisition date, net of accumulated amortization. Certain licenses require payments to the governments, such payments are recognized in the cost of service and equipment. The licenses that in accordance with government requirements are categorized as automatically renewable, for a nominal cost and with substantially consistent terms, are considered by the Company as intangible assets with an indefinite useful life. Accordingly, they are not amortized. Licenses are amortized when the Company does not have a basis to conclude that they are indefinite lived. Licenses are amortized using the straight-line method over a period ranging from 3 to 30 years, which represents the usage period of the assets. The Company has conducted an internal analysis on the applicability of the International Financial Reporting Interpretation Committee (“IFRIC”) No. 12 (Service Concession Agreements) and has concluded that its concessions are outside the scope of IFRIC 12. To determine the applicability of IFRIC 12, the Company analyzes each concession or group of similar concessions in a given jurisdiction. As a threshold matter, the Company identifies those government concessions that provide for the development, financing, operation or maintenance of infrastructure used to render a public service, and that set out performance standards, mechanisms for adjusting prices and arrangements for arbitrating disputes. With respect to those services, the Company evaluates whether the grantor controls or regulates (i) what services the operator must provide, (ii) to whom it must provide them and (iii) the applicable price (the “Services Criterion”). In evaluating whether the applicable government, as grantor, controls the price at which the Company provides its services, the Company looks at the terms of the concession agreement according to all applicable regulations. If the Company determines that the concession under analysis meets the Services Criterion, then the Company evaluates whether the grantor would hold a significant residual interest in the concession’s infrastructure at the end of the term of the arrangement. ii) Trademarks Trademarks acquired are measured on initial recognition at cost. The cost of trademarks acquired in a business combination is their fair value at the date of acquisition. The useful lives of trademarks are assessed as either definite or indefinite. Trademarks with finite useful lives are amortized using the straight-line method over a period ranging from 1 to 10 years. Trademarks with indefinite useful lives are not amortized but are tested for impairment annually at the cash generating unit level. The assessment of indefinite life is reviewed annually to determine whether the indefinite life continues to be supportable, if not, the change in useful life from indefinite to definite is made on a prospective basis. iii) Irrevocable rights of use Irrevocable rights of use are recognized according to the amount paid for the right and are amortized over the period in which they are granted. The carrying values of the Company’s licenses and trademarks are reviewed annually and whenever there are indicators of impairment in the value of such assets. When an asset’s recoverable amount, which is the higher of the asset’s fair value, less disposal costs and its value in use (the present value of future cash flows), is less than the asset’s carrying value, the difference is recognized as an impairment loss. iv) Customer relationships The value of customer relations is determined and valued at the time that a new subsidiary is acquired, as determined by the Company with the assistance of independent appraisers and is amortized over a 5-year period. During the years ended December 31, 2019, 2020 and 2021, no significant impairment losses were recognized for licenses, trademarks, irrevocable rights of use or customer relationships.
Impairment in the value of long-lived assets	l) Impairment in the value of long-lived assets The Company assesses the existence of indicators of impairment in the carrying value of long-lived assets, investments in associates, goodwill and intangible assets according to IAS 36 “ Impairment of assets In the estimation of impairments, the Company uses the strategic plans established for the separate cash-generating units to which the assets are assigned. Such strategic plans generally cover a period from 3 to 5 years. For longer periods, beginning in the fifth year, projections are based on such strategic plans while applying a constant or declining expected perpetual growth rate. Key assumptions used in value in use calculations The forecasts are made in real terms (net of inflation) and in the functional currency of the subsidiary as of December 31, 2021. Financial forecasts, premises and assumptions are similar to what any other market participant in similar conditions would consider , including the impact of the COVID-19 pandemic. Local synergies, that any other market participant would not have taken into consideration to prepare similar forecasted financial information, have not been included. The assumptions used to develop the financial forecasts were validated for each of the cash generating units (“CGUs”), typically identified by country and by service (in the case of Mexico) taking into consideration the following: • Current subscribers and expected growth. • Type of subscribers (prepaid, postpaid, fixed line, multiple services) • Market environment and penetration expectations • New products and services • Economic environment of each country • Expenses for maintaining the current assets • Investments in technology for expanding the current assets • Market consolidation and synergies The foregoing forecasts could differ from the results obtained through time; however, the Company prepares its estimates based on the current situation of each of the CGUs. The recoverable amounts are based on value in use. The value in use is determined based on the method of discounted cash flows. The key assumptions used in projecting cash flows are: • Margin on EBITDA is determined by dividing EBITDA (operating income plus depreciation and amortization) by total revenues. • Margin on CAPEX is determined by dividing capital expenditures (“CAPEX”) by total revenues. • Pre-tax weighted average cost of capital (“WACC”) is used to discount the projected cash flows. As discount rate, the Company uses the WACC which was determined for each of the cash generating units and is described in the following paragraphs. The estimated discount rates to perform the IAS 36 “ Impairment of assets These discount rates do not include inflation. The discount rates represent the current market assessment of the risks specific to each CGU, taking into consideration the time value of money and individual risks of the underlying assets that have not been incorporated in the cash flow estimates. The discount rate calculation is based on the specific circumstances of the Company and its operating segments. The WACC takes into account both debt and equity costs. The cost of equity is derived from the expected return on investment for each GCU. The cost of debt is based on the interest-bearing borrowings the Company is obliged to service. Segment-specific risk is incorporated by applying individual beta factors. The beta factors are evaluated annually based on publicly available market data. Market participant assumptions are important because, not only do they include industry data for growth rates, but also management assesses how the CGU’s position, relative to its competitors, might change over the forecasted period. The most significant forward-looking estimates used for the 2020 and 2021 impairment evaluations are shown below: Average margin on Average margin on Average pre-tax 2020: Europe (7 countries) 32.20% - 40.76% 7.04% - 19.39% 3.88% - 12.02% Brazil (fixed line, wireless and TV) 40.67% 25.36% 9.50% Puerto Rico 23.06% 14.57% 3.53% Dominican Republic 47.57% 13.71% 8.27% Mexico (fixed line and wireless) 32.69% 11.01% 6.03% Ecuador 49.23% 11.14% 17.50% Peru 38.72% 15.43% 4.76% El Salvador 45.92% 21.19% 14.63% Chile 26.34% 13.18% 3.37% Colombia 43.45% 18.19% 6.44% Other countries 10.07% - 47.23% 0.48% - 31.67% 3.42% - 21.85% 2021: Europe (7 countries) 31.60% - 45.32% 7.48% - 24.37% 2.91% - 9.83% Brazil (fixed line, wireless and TV) 41.37% 22.98% 4.62% Puerto Rico 21.54% 14.36% 3.00% Dominican Republic 52.02% 13.86% 5.84% Mexico (fixed line and wireless) 36.21% 15.89% 6.24% Ecuador 44.76% 12.48% 14.48% Peru 36.63% 17.19% 3.99% El Salvador 44.82% 24.25% 10.78% Chile 27.36% 17.98% 2.81% Colombia 43.36% 23.18% 7.18% Other countries 30.55% - 48.52% 4.91% - 30.03% 4.64% - 14.39% Sensitivity to changes in assumptions: The implications of the key assumptions for the recoverable amount are discussed below: Margin on CAPEX- The Company performed a sensitivity analysis by increasing its CAPEX by 5% and maintaining all other assumptions the same , WACC- Additionally, should the Company increase by 50 base points in WACC per CGU and maintain all other assumptions the same, results without impairment.
Right-of-use assets	m Right-of-use assets The Company applies a single recognition and measurement approach for all leases, except for short-term leases and leases of low-value assets. The Company recognizes lease liabilities to make lease payments and right-of-use assets representing the right to use the underlying assets. i) Right-of-use assets The Company recognizes right-of-use assets at the commencement date of the lease (i.e., the date the underlying asset is available for use). Right-of-use assets are measured at cost, less any accumulated depreciation and impairment losses, and adjusted for any remeasurement of lease liabilities. The cost of right-of-use assets includes the amount of lease liabilities recognized, initial direct costs incurred, and lease payments made at or before the commencement date less any lease incentives received. Right-of-use assets are depreciated on a straight-line basis over the shorter of the lease term and the estimated useful lives of the assets, as follows: Assets Useful life Towers and sites 5 to 12 years Property 10 to 25 years Other equipment 5 to 15 years The right-of-use assets are also subject to impairment test. ii) Lease liabilities. At the commencement date of the lease, the Company recognizes the lease liabilities measured at the present value of the lease payments to be made over the lease term. Lease payments include fixed payments (including in-substance fixed payments) less any lease incentives receivable, variable lease payments that depend on an index or rate, and amounts expected to be paid under residual value guarantees. The lease payments also include payments of penalties for early termination of the lease, if the term of the lease reflects that the Company exercises the option to terminate early. The variable lease payments that do not depend on an index or a rate are recognized as an expense in the period on which the event or condition that triggers the payment occurs. In calculating the present value of the lease payments, the Company uses an incremental borrowing rate at the lease commencement date, if the interest rate implicit in the lease is not readily determinable. After the commencement date, the amount of lease liabilities is increased to reflect the accretion of interest and reduced for the lease payments made. In addition, the carrying amount of the lease liabilities is remeasured if there is a modification, a change in the lease term, a change in the in-substance fixed payments or change in the assessment to purchase the underlying asset. iii) Short-term leases and leases of low value assets. The Company applies the short-term lease recognition exemption for its leases of machinery and equipment (i.e., those leases that have a lease term of 12 months or less from the commencement date and do not contain a purchase option). It also applies the recognition exemption lease of low-value assets (that is, below US$ 5,000). Short-term lease payments and leases of low-value assets are recognized as expenses on straight-line basis over the lease term.
Financial assets and liabilities	n) Financial assets and liabilities Financial assets Initial recognition and measurement Financial assets are classified, at initial recognition, as subsequently measured at amortized cost, fair value through other comprehensive income (OCI), and fair value through profit or loss. The classification of financial assets at initial recognition depends on the financial asset’s contractual cash flow characteristics and the Company’s business model for managing them, with the exception of trade receivables that do not contain a significant financing component or for which the Company has applied the practical expedient, the Company initially measures a financial asset at its fair value plus, in the case of a financial asset not at fair value through profit or loss, transaction costs. Subsequent measurement For purposes of subsequent measurement, financial assets are classified in four categories: • Financial assets at amortized cost (debt instruments) • Financial assets at fair value through OCI with recycling of cumulative gains and losses (debt instruments) • Financial assets designated at fair value through OCI with no recycling of cumulative gains and losses upon derecognition (equity instruments) • Financial assets at fair value through profit or loss Financial assets at amortized cost (debt instruments) The Company measures financial assets at amortized cost if both of the following conditions are met: • The financial asset is held within a business model with the objective to hold financial assets in order to collect contractual cash flows, and • The contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding Financial assets at amortized cost are subsequently measured using the effective interest (EIR) method and are subject to impairment. Gains and losses are recognized in profit or loss when the asset is derecognized, modified or impaired. The Company’s financial assets at amortized cost includes cash equivalents, loans and receivables. Financial assets at fair value through OCI with recycling of cumulative gains and losses (debt instruments) The Company measures debt instruments at fair value through OCI if both of the following conditions are met: • The financial asset is held within a business model with the objective of both holding to collect contractual cash flows and selling, and • The contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding For debt instruments at fair value through OCI, interest income, foreign exchange revaluation and impairment losses or reversals are recognized in the statements of profit or loss and computed in the same manner as for financial assets measured at amortized cost. The remaining fair value changes are recognized in OCI. Upon derecognition, the cumulative fair value change recognized in OCI is recycled to profit or loss. Financial assets designated at fair value through OCI with no recycling of cumulative gains and losses upon derecognition (equity instruments) Upon initial recognition, the Company can elect to classify irrevocably its equity investments as equity instruments designated at fair value through OCI when they meet the definition of equity under IAS 32 Financial Instruments: Presentation and are not held for trading. The classification is determined on an instrument by instrument basis. Gains and losses on these financial assets are never recycled to profit or loss. Dividends are recognized as other income in the statements of profit or loss when the right of payment has been established, except when the Company benefits from such proceeds as a recovery of part of the cost of the financial asset, in which case, such gains are recorded in OCI. Equity instruments designated at fair value through OCI are not subject to impairment assessment. Financial assets at fair value through profit or loss Financial assets at fair value through profit or loss include financial assets held for trading, financial assets designated upon initial recognition at fair value through profit or loss, or financial assets mandatorily required to be measured at fair value. Financial assets are classified as held for trading if they are acquired for the purpose of selling or repurchasing in the near term. Derivatives, including separated embedded derivatives, are also classified as held for trading unless they are designated as effective hedging instruments. Financial assets with cash flows that are not solely payments of principal and interest are classified and measured at fair value through profit or loss, irrespective of the business model. Notwithstanding the criteria for debt instruments to be classified at amortized cost or at fair value through OCI, as described above, debt instruments may be designated at fair value through profit or loss on initial recognition if doing so eliminates, or significantly reduces, an accounting mismatch. Financial assets at fair value through profit or loss are carried in the statements of financial position at fair value with net changes in fair value recognized in the consolidated statements of comprehensive income within “Valuation of derivatives, interest cost from labor obligations and other financial items”. Derecognition of financial assets A financial asset is primarily derecognized when: • The rights to receive cash flows from the asset have expired, or • The Company has transferred its rights to receive cash flows from the asset or has assumed an obligation to pay the received cash flows in full without material delay to a third party under a ‘pass-through’ arrangement; and either (a) the Company has transferred substantially all the risks and rewards of the asset, or (b) the Company has neither transferred nor retained substantially all the risks and rewards of the asset, but has transferred control of the asset When the Company has transferred its rights to receive cash flows from an asset or has entered into a passthrough arrangement, it evaluates if, and to what extent, it has retained the risks and rewards of ownership. When it has neither transferred nor retained substantially all the risks and rewards of the asset, nor transferred control of the asset, the Company continues to recognize the transferred asset to the extent of its continued involvement. In that case, the Company also recognizes an associated liability. The transferred asset and the associated liability are measured on a basis that reflects the rights and obligations that the Company has retained. Impairment of financial assets The Company recognizes an allowance for expected credit losses (ECLs) for all debt instruments not held at fair value through profit or loss. ECLs are based on the difference between the contractual cash flows due in accordance with the contract and all the cash flows that the Company expects to receive, discounted at an approximation of the original effective interest rate. The expected cash flows will include cash flows from the sale of collateral held or other credit enhancements that are integral to the contractual terms. ECLs are recognized in two stages. For credit exposures for which there has not been a significant increase in credit risk since initial recognition, ECLs are provided for credit losses that result from default events that are possible within the next 12-months (a 12-month ECL). For those credit exposures for which there has been a significant increase in credit risk since initial recognition, a loss allowance is required for credit losses expected over the remaining life of the exposure, irrespective of the timing of the default (a lifetime ECL). For some trade receivables and contract assets based on available information loss rate approach Financial liabilities Initial recognition Financial liabilities are classified, at initial recognition, as financial liabilities at fair value through profit or loss, loans and borrowings, payables, or as derivatives designated as hedging instruments in an effective hedge, as appropriate. All financial liabilities are recognized initially at fair value and, in the case of loans and borrowings and payables, net of directly attributable transaction costs. The Company’s financial liabilities include trade and other payables, loans and borrowings including bank overdrafts, and derivative financial instruments. Subsequent measurement The measurement of financial liabilities depends on their classification, as described below: Financial liabilities at fair value through profit or loss financial liabilities at fair value through profit or loss include financial liabilities held for trading and financial liabilities designated upon initial recognition as at fair value through profit or loss. Financial liabilities are classified as held for trading if they are incurred for the purpose of repurchasing in the near term. This category also includes derivative financial instruments entered into by the Company that are not designated as hedging instruments in hedge relationships as defined by IFRS 9. Separated embedded derivatives are also classified as held for trading unless they are designated as effective hedging instruments. Gains or losses on liabilities held for trading are recognized in the statements of profit or loss. Financial liabilities designated upon initial recognition at fair value through profit or loss are designated at the initial date of recognition, and only if the criteria in IFRS 9 are satisfied. The Company has not designated any financial liability as at fair value through profit or loss. Loans and borrowings After initial recognition, interest-bearing loans and borrowings are subsequently measured at amortized cost using the EIR method. Gains and losses are recognized in profit or loss when the liabilities are derecognized as well as through the EIR amortization process. Amortized cost is calculated by taking into account any discount or premium on acquisition and fees or costs that are an integral part of the EIR. The EIR amortization is included as finance costs in the statements of profit or loss. Derecognition of financial liabilities A financial liability is derecognized when the obligation under the liability is discharged, cancelled or expires. When an existing financial liability is replaced by another from the same lender on substantially different terms, or the terms of an existing liability are substantially modified, such an exchange or modification is treated as the derecognition of the original liability and the recognition of a new liability. The difference in the respective carrying amounts is recognized in the consolidated statements of comprehensive income. Offsetting of financial instruments Financial assets and financial liabilities are offset and the net amount is reported in the consolidated statements of financial position if there is a currently enforceable legal right to offset the recognized amounts and there is an intention to settle on a net basis, to realize the assets and settle the liabilities simultaneously.
Transactions in foreign currency	o) Transactions in foreign currency Transactions in foreign currency are initially recorded at the prevailing exchange rate at the time of the related transactions. Foreign currency denominated assets and liabilities are subsequently translated at the prevailing exchange rate at the financial statements reporting date. Exchange differences determined from the transaction date to the time foreign currency denominated assets and liabilities are settled or translated at the financial statements reporting date are charged or credited to the results of operations. In determining the spot exchange rate to use on initial recognition of the related asset, expense or income (or part of it) on the derecognition of a non-monetary asset or non-monetary liability relating to advance consideration, the date of the transaction is the date on which the Company initially recognizes the non-monetary asset or non-monetary liability arising from the advance consideration. If there are multiple payments or receipts in advance, the Company determines the transaction date for each payment or receipt of advance consideration. The exchange rates used for the translation of foreign currencies against the Mexican peso are as follows: Average exchange rate Closing exchange rate Country or Zone Currency 2019 2020 2021 2020 2021 Argentina (1) Argentine Peso (AR$) 0.4110 0.3070 0.2137 0.2371 0.2004 Brazil Real (R$) 4.8907 4.1850 3.7625 3.8387 3.6885 Colombia Colombian Peso (COP$) 0.0059 0.0058 0.0054 0.0058 0.0052 Guatemala Quetzal 2.5023 2.7826 2.6212 2.5596 2.6666 U.S.A. (2) US Dollar 19.2641 21.4860 20.2769 19.9487 20.5835 Uruguay Uruguay Peso 0.5479 0.5110 0.4655 0.4712 0.4605 Nicaragua Cordoba 0.5817 0.6257 0.5765 0.5728 0.5795 Honduras Lempira 0.7806 0.8678 0.8384 0.8215 0.8396 Chile Chilean Peso 0.0275 0.0271 0.0268 0.0281 0.0244 Paraguay Guaraní 0.0031 0.0032 0.0030 0.0029 0.0030 Peru Sol (PEN$) 5.7708 6.1483 5.2297 5.5046 5.1484 Dominican Republic Dominican Peso 0.3737 0.3766 0.3540 0.3416 0.3570 Costa Rica Colon 0.0326 0.0366 0.0325 0.0323 0.0319 European Union Euro 21.5642 24.5080 23.9835 24.3693 23.4220 Bulgaria Lev 11.0257 12.5284 12.2617 12.4594 11.9762 Belarus New Belarusian Ruble 9.2159 8.8172 7.9932 7.5721 8.0279 Croatia Croatian Kuna 2.9069 3.2498 3.1852 3.2279 3.1161 Macedonia Macedonian Denar 0.3504 0.3975 0.3893 0.3950 0.3800 Serbia Serbian Denar 0.1830 0.2083 0.2040 0.2071 0.1992 (1) Year-end rates are used for the translation of revenues and expenses if IAS 29 “Financial Reporting in Hyperinflationary Economies” Financial reporting in hyperinflationary economies Financial statements of Argentina subsidiaries are restated before translation to the reporting currency of the Company and before consolidation in order to reflect the same value of money for all items. Items recognized in the statements of financial position which are not measured at the applicable year-end measuring unit are restated based on the general price index. All non-monetary items measured at cost or amortized cost is restated for the changes in the general price index from the date of transaction or the last hyperinflationary calculation to the reporting date. Monetary items are not restated. All items of shareholders’ equity are restated for the changes in the general price index since their addition or the last hyperinflationary calculation until the end of the reporting period. All items of comprehensive income are restated for the change in a general price index from the date of initial recognition to the reporting date. Gains and losses resulting from the net-position of monetary items are reported in the consolidated statements of operations in financial result in exchange differences. In accordance with IFRS, prior year financial statements were not restated. (2) Includes U.S.A., Ecuador, El Salvador, Puerto Rico and Panama. The exchange rate between the US dollar and Mexican Peso for April 28, 2022 was 20.3560 per US dollar, which represents an appreciation of 1.11% as compared to December 31, 2021.
Accounts payable, accrued liabilities and provisions	p) Accounts payable, accrued liabilities and provisions Liabilities are recognized whenever (i) the Company has current obligations (legal or assumed) resulting from a past event, (ii) when it is probable the obligation will give rise to a future cash disbursement for its settlement, and (iii) the amount of the obligation can be reasonably estimated. When the effect of the time value of money is significant, the amount of the liability is determined as the present value of the expected disbursements to settle the obligation. The discount rate is determined on a pre-tax basis and reflects current market conditions at the financial statements reporting date and, where appropriate, the risks specific to the liability. Where discounting is used, an increase in the liability is recognized as finance expense. Contingent liabilities are recognized only when it is probable, they will give rise to a future cash disbursement for their settlement.
Employee benefits	q) Employee benefits The Company has defined benefit pension plans for its subsidiaries Puerto Rico Telephone Company, Teléfonos de Mexico, Claro Brasil, and Telekom Austria. Claro Brasil also has medical plans and defined contribution plans and Telekom Austria provides retirement benefits to its employees under a defined contribution plan. The Company recognizes the costs of these plans based upon independent actuarial computations and are determined using the projected unit credit method. The latest actuarial computations were prepared as of December 31, 2021. Mexico Mexican subsidiaries have the obligation to pay seniority premiums to personnel based on the Mexican Federal Labor Law which also establishes the obligation to make certain payments to personnel who cease to provide services under certain circumstances. Pensions (for Telmex) and seniority premiums are determined based on the salary of employees in their final year of service, the number of years worked at and their age at the moment of retirement. The costs of pensions, seniority premiums and severance benefits, are recognized based on calculations by independent actuaries using the projected unit credit method using financial hypotheses, net of inflation. Telmex has established an irrevocable trust fund and makes annual contributions to that fund. Puerto Rico In Puerto Rico, the Company has noncontributing pension plans for full-time employees, which are tax qualified as they meet Employee Retirement Income Security Act of 1974 requirements. The pension benefit is composed of two elements: (i) An employee receives an annuity at retirement if they meet the rule of 85 (age at retirement plus accumulated years of service). The annuity is calculated by applying a percentage times year of services to the last three years of salary. (ii) The second element is a lump-sum benefit based on years of service ranging from 9 to 12 months of salary. Health care and life insurance benefits are also provided to retirees under a separate plan (post-retirement benefits). Brazil Claro Brasil provides a defined benefit plan and post-retirement medical assistance plan, and a defined contribution plan, through a pension fund that supplements the government retirement benefit for certain employees. Under the defined benefit plan, the Company makes monthly contributions to the pension fund equal to 17.5% of the employee’s aggregate salary. In addition, the Company contributes a percentage of the aggregate salary base for funding the post-retirement medical assistance plan for the employees who remain in the defined benefit plan. Each employee makes contributions to the pension fund based on age and salary. All newly hired employees automatically adhere to the defined contribution plan and no further admittance to the defined benefit plan is allowed. For the defined contribution plan. See Note 18. Austria Telekom Austria provides retirement benefits to its employees under defined contribution and defined benefit plans. The Company pays contributions to publicly or privately administered pension or severance insurance plans on mandatory or contractual basis. Once the contributions have been paid, the Company has no further payment obligations. The regular contributions are recognized as employee expenses in the year in which they are due. All other employee benefit obligations provided in Austria are unfunded defined benefit plans for which the Company records provisions which are calculated using the projected unit credit method. The future benefit obligations are measured using actuarial methods on the basis of an appropriate assessment of the discount rate, rate of employee turnover, rate of compensation increase and rate of increase in pensions. For severance and pensions, the subsidiary recognizes actuarial gains and losses in other comprehensive income. The re-measurement of defined benefit plans relates to actuarial gains and losses only as Telekom Austria holds no plan assets. Interest expense related to employee benefit obligations is reported in “Valuation of derivatives, interests cost from labor obligation and other financial items, net” in the statements of comprehensive income. Other subsidiaries For the rest of the Company’s subsidiaries, there are no defined benefit plans or compulsory defined contribution structures. However, certain subsidiaries make contributions to national pension, social security and severance plans in accordance with the percentages and rates established by the applicable social security and labor laws of each country. Such contributions are made to the entities designated by the countries legislation and are recorded as direct labor expenses in the consolidated statements of comprehensive income as they are incurred. Remeasurements of defined benefit plans, comprising of actuarial gains and losses, the effect of the asset ceiling, excluding net interest and the return on plan assets (excluding net interest), are recognized immediately in the consolidated statements of financial position with a corresponding debit or credit to retained earnings through OCI in the period in which they occur. Re-measurements are not reclassified to profit or loss in subsequent periods. Past service costs are recognized in profit or loss on the earlier of: (i) The date of the plan amendment or curtailment, and (ii) The date that the Company recognizes restructuring-related costs Net interest on liability for defined benefits is calculated by applying the discount rate to the net defined benefit liability or asset and it is recognized in the “valuation of derivatives, interest cost from labor obligations and other financial items” in the consolidated statements of comprehensive income. The Company recognizes the changes in the net defined benefit obligation under “Cost of sales and services” and “Commercial, administrative and general expenses” in the consolidated statements of comprehensive income. Paid absences The Company recognizes a provision for the cost of paid absences, such as vacation time, based on the accrual method.
Employee profit sharing	r) Employee profit sharing Employee profit sharing is paid by certain subsidiaries of the Company to its eligible employees. The Company has employee profit sharing in Mexico, Ecuador and Peru. In Mexico, employee profit sharing is computed at the rate of 10% on the individual subsidiaries taxable base adjusted for employee profit sharing purposes as provided by law. Employee profit sharing is presented as an operating expense in the consolidated statements of comprehensive income.
Taxes	s) Taxes Income taxes Current income tax payable is presented as a short-term liability, net of prepayments made during the year. Deferred income tax is determined using the liability method based on the temporary differences between the tax values of the assets and liabilities and their book values at the consolidated financial statements reporting date. Deferred tax assets and liabilities are measured using the tax rates that are expected to be in effect in the period when the asset will materialize or the liability will be settled, based on the enacted tax rates (and tax legislation) that have been enacted or substantially enacted at the financial statements reporting date. The value of deferred tax assets is reviewed by the Company at each financial statement reporting date and is reduced to the extent that it is more likely that the Company will not have sufficient future tax profits to allow for the realization of all or a part of its deferred tax assets. Unrecognized deferred tax assets are revalued at each financial statement reporting date and are recognized when it is more likely that there will be sufficient future tax profits to allow for the realization of these assets. Deferred taxes relating to items recognized in Other Comprehensive Income are recognized together with the concept that generated such deferred taxes. Deferred taxes consequence on unremitted earnings from subsidiaries and associates are considered as temporary differences, when the timing of the reversal of the temporary differences can be controlled and it is probable that the temporary differences will not reverse in the foreseeable future. Taxes withheld on remitted foreign earnings are creditable against Mexican taxes, thus to the extent that a remittance is to be made, the deferred tax would be limited to the incremental difference between the Mexican tax rate and the rate of the remitting country. As of December 31, 2020 and 2021, the Company has not provided for any deferred taxes related to unremitted foreign earnings. The Company offsets tax assets and liabilities if it has a legally enforceable right to set off current tax assets and current tax liabilities and the deferred tax assets and deferred tax liabilities relate to income taxes levied by the same tax authority. Sales tax Revenues, expenses and assets are recognized net of the amount of sales tax, except: • When the sales tax incurred on a purchase of assets or services is not recoverable from the taxation authority, in which case, the sales tax is recognized as part of the cost of acquisition of the asset or as part of the expense item, as applicable. • Receivables and payables that are stated with the amount of sales tax included. The net amount of sales tax recoverable from, or payable to, the tax authorities is included as part of the current receivables or payables in the consolidated statements of financial position unless they are due in more than a year in which case they are classified as non-current.
Advertising	t) Advertising Advertising expenses are recognized as incurred. For the years ended December 31, 2019, 2020 and 2021, advertising expenses were Ps. 13,100,877, Ps. 11,157,495 and Ps. 12,018,536 respectively, and are presented in the consolidated statements of comprehensive income in the caption “Commercial, administrative and general expenses”.
Earnings per share	u) Earnings per share Basic and diluted earnings per share are determined by dividing net profit of the year by the weighted-average number of shares outstanding during the year. In determining the weighted average number of outstanding shares, shares repurchased by the Company have been excluded.
Financial risks	v) Financial risks The main risks associated with the Company’s financial instruments are: (i) liquidity risk, (ii) market risk (foreign currency exchange risk and interest rate risk) and (iii) credit risk and counterparty risk. The Board of Directors approves the policies submitted by management to mitigate these risks. i) Liquidity risk Liquidity risk is the risk that the Company may not meet its financial obligations associated with financial instruments when they are due. The Company’s financial obligations and commitments are included in Notes 14 and 17. ii) Market risk The Company is exposed to certain market risks derived from changes in interest rates and fluctuations in exchange rates of foreign currencies. The Company’s debt is denominated in foreign currencies, mainly in US dollars and euros, other than its functional currency. In order to reduce the risks related to fluctuations in the exchange rate of foreign currency, the Company uses derivative financial instruments such as cross-currency swaps and forwards to adjust exposures resulting from foreign exchange currency. The Company does not use derivatives to hedge the exchange risk arising from having operations in different countries. Additionally, the Company occasionally uses interest rate swaps to adjust its exposure to the variability of the interest rates or to reduce their financing costs. The Company’s practices vary from time to time depending on judgments about the level of risk, expectations of change in the movements of interest rates and the costs of using derivatives. The Company may terminate or modify a derivative financial instrument at any time. See Note 7 for disclosure of the fair value of derivatives as of December 31, 2020 and 2021. iii) Credit risk Credit risk represents the loss that could be recognized in case the counterparties fail to comply with their contractual obligations. The financial instruments that potentially represent concentrations of credit risk are cash and short-term deposits, trade accounts receivable and financial instruments related to debt and derivatives. The Company’s policy is designed in order to limit its exposure to any one financial institution; therefore, the Company’s financial instruments are contracted with several different financial institutions located in different geographic regions. The credit risk in accounts receivable is diversified because the Company has a broad customer base that is geographically dispersed. The Company continuously evaluates the credit conditions of its customers and generally does not require collateral to guarantee collection of its accounts receivable. The Company monitors on a monthly basis its collection cycle to avoid deterioration of its results of operations. A portion of the Company’s cash surplus is invested in short- term deposits with financial institutions with high credit ratings. iv) Sensitivity analysis for market risks The Company uses sensitivity analysis to measure the potential losses based on a theoretical increase of 100 basis points in interest rates and a 5% fluctuation in exchange rates: Interest rate In the event that the Company’s agreed-upon interest rates at December 31, 2021 decrease by 100 basis points and a 5.23% fluctuation in exchange rates, the net interest expense would (decrease) by Ps. Exchange rate fluctuations Should the Company’s debt at December 31, 2021 of Ps.564,030,102, if suffer a 5% increase/(decrease) in exchange rates, the debt would increase/(decrease) by Ps. 28,394,119 and Ps. (28,019,972), respectively.
Derivative financial instruments	w) Derivative financial instruments Derivative financial instruments are recognized in the consolidated statements of financial position at fair value. Valuations obtained by the Company are compared against those of the financial institutions with which the agreements are entered into, and it is the Company’s policy to compare such fair value to a valuation provided by an independent pricing provider in case of discrepancies. Changes in the fair value of derivatives that do not qualify as hedging instruments are recognized immediately in the line “Valuation of derivatives, interest cost from labor obligations and other financial items, net”. The Company is exposed to interest rate and foreign currency risks, which tries to mitigate through a controlled risk management program that includes the use of derivative financial instruments. The Company principally uses to offset the risk of exchange rate and interest rate fluctuations. Additionally, for the years ended December 31, 2019, 2020 and 2021 certain of the Company’s derivative financial instruments had been designated, and had qualified, as cash flow hedges. The effective portion of gains or losses on the cash flow derivatives is recognized in equity under the heading “Effect for fair value of derivatives”, and the ineffective portion is charged to results of operations of the period.
Current versus non-current classification	x) Current versus non-current classification The Company presents assets and liabilities in its consolidated statements of financial position based on current/non-current classification. An asset is current when it is either: (i) Expected to be realized or intended to be sold or consumed in the normal operating cycle. (ii) Held primarily for the purpose of trading. (iii) Expected to be realized within twelve months after the reporting period. (iv) Cash and cash equivalents unless restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period. A liability is current when: • It is expected to be settled in the normal operating cycle. • It is held primarily for the purpose of trading. • It is due to be settled within twelve months after the reporting period. • There is no unconditional right to defer the settlement of the liability for at least twelve months after the reporting period. The Company classifies all other assets and liabilities, including deferred income tax assets and liabilities, as non-current.
Presentation of consolidated statements of comprehensive income	y) Presentation of consolidated statements of comprehensive income The costs and expenses shown in the consolidated statements of comprehensive income are presented in combined manner (based on both their function and nature), which allows a better understanding of the components of the Company’s operating income. This classification allows a comparison to the telecommunications industry. The Company presents operating income in its consolidated statements of comprehensive income since it is a key indicator of the Company’s performance. Operating income represents operating revenues less operating costs and expenses.
Operating segments	z) Operating segments Segment information is presented based on information used by management in its decision-making processes. Segment information is presented based on the geographic areas in which the Company operates. The management of the Company is responsible for making decisions regarding the resources to be allocated to the Company’s different segments, as well as evaluating the performance of each segment. Intersegment revenues and costs, intercompany balances as well as investments in shares in consolidated entities are eliminated upon consolidation and reflected in the “eliminations” column in Note 23. None of the segment’s records revenue from transactions with a single external customer amounting to 10% or more of the revenues.
Convenience translation	Aa) Convenience translation The consolidated financial statements are stated in thousands of Mexican pesos (“Ps.”); however, solely for the convenience of the readers, the consolidated statement of financial position as of December 31, 2021 and the consolidated statement of comprehensive income and consolidated statement of cash flows for the year ended December 31, 2021 were converted into U.S. dollars at the exchange rate of Ps.
Significant accounting judgments, estimates and assumptions	Ab) Significant accounting judgments, estimates and assumptions In preparing its consolidated financial statements, the Company makes estimates concerning a variety of matters. Some of these matters are highly uncertain, and its estimates involve judgments it makes based on the available information. In the discussion below, the Company has identified several of these matters for which its financial statements would be materially affected if either (1) the Company uses different estimates that it could have reasonably used or (2) in the future América Móvil changes its estimates in response to changes that are reasonably likely to occur. The following discussion addresses only those estimates that the Company considers most important based on the degree of uncertainty and the likelihood of a material impact had it used a different estimate. There are many other areas in which the Company uses estimates about uncertain matters, but the reasonably likely effect of changed or different estimates is not material to the financial presentation for those other areas. Estimated useful lives of plant, property and equipment The Company currently depreciates most of its network infrastructure based on an estimated useful life determined upon the expected particular conditions of operation and maintenance in each of the countries in which it operates. The estimates are based on AMX’s historical experience with similar assets, anticipated technological changes and other factors, taking into account the practices of other telecommunications companies. The Company reviews estimated useful lives each year to determine, for each particular class of assets, whether they should be changed. The Company may shorten/extend the estimated useful life of an asset class in response to technological changes, changes in the market or other developments. This results in increased/decreased depreciation expense. See Note 10. Revaluation of passive infrastructure of telecommunications towers The Company recognizes the passive infrastructure of the telecommunication towers at fair value, recognizing the changes in OCI. The discounted cash flow model was used. The Company hired a valuation specialist with industry experience to measure fair values as of December 31, 2021 Impairment of Long-Lived Assets The Company has large amounts of long-lived assets, including property, plant and equipment, intangible assets, investments in affiliates and goodwill on its consolidated statements of financial position. The Company is required to test long-lived assets for impairment when circumstances indicate a potential impairment or, in some cases, at least on an annual basis. The impairment analysis for long-lived assets requires the Company to estimate the recoverable amount of the asset, which is the higher of its fair value (minus any disposal costs) and its value in use. To estimate the fair value of a long-lived asset, the Company typically takes into account recent market transactions or, if no such transactions can be identified, the Company uses a valuation model that requires making certain assumptions and estimates. Similarly, to estimate the value in use of long-lived assets, the Company typically makes various assumptions about the future prospects for the business to which the asset relates, considers market factors specific to that business and estimates future cash flows to be generated by that business. Based on this impairment analysis, including all assumptions and estimates related thereto, as well as guidance provided by IFRS relating to the impairment of long-lived assets different assumptions and estimates could materially impact the Company’s reported financial results. More conservative assumptions of the anticipated future benefits from these businesses could result in impairment charges, which would decrease net income and result in lower asset values on the consolidated statements of financial position. Conversely, less conservative assumptions could result in smaller or no impairment charges, higher net income and higher asset values. The key assumptions used to determine the recoverable amount for the Company’s CGUs, are further explained in Notes 23, 10 and 11. Deferred Income Taxes The Company is required to estimate its income taxes in each of the jurisdictions in which it operates. This process involves the jurisdiction-by-jurisdiction estimation of actual current tax exposure and the assessment of temporary differences resulting from the differing treatment of certain items, such as accruals and amortization, for tax and financial reporting purposes, as well as net operating loss carry-forwards and other tax credits. These items result in deferred tax assets and liabilities as discussed in Note 2 s). The analysis is based on estimates of taxable income in the jurisdictions in which the Company operates and the period on which the deferred tax assets and liabilities will be recovered or settled. If actual results differ from these estimates, or the Company adjusts these estimates in future periods, its financial position and results of operations may be materially affected. In assessing the future realization of deferred tax assets, the Company considers future taxable income, ongoing planning strategies and future results in its operations. In the event that the estimates of projected future taxable income are lowered, or changes in current tax regulations are enacted that would impose restrictions on the timing or extent of the ability to utilize the tax benefits of net operating loss carry-forwards in the future, an adjustment to the recorded amount of deferred tax assets would be made, with a related charge to income. See Note 13. Accruals Accruals are recorded when, at the end of the period, the Company has a present obligation as a result of past events, whose settlement requires an outflow of resources that is considered probable and can be measured reliably. This obligation may be legal or constructive, arising from, but not limited to, regulation, contracts, common practice or public commitments, which have created a valid expectation for third parties that the Company will assume certain responsibilities. The amount recorded is the best estimation performed by the Company’s management in respect of the disbursement that will be required to settle the obligations, considering all the information available at the date of the financial statements, including the opinion of external experts, such as legal advisors or consultants. Accruals are adjusted to account for changes in circumstances for ongoing matters and the establishment of additional accruals for new matters. If the Company is unable to reliably measure the obligation, no accrual is recorded, and information is then presented in the notes to its consolidated financial statements. Because of the inherent uncertainties in these estimations, actual expenditures may be different from the originally estimated amount recognized. See Note 16. The Company is subject to various claims and contingencies related to tax, labor and legal proceedings as described in Note 17b). Labor Obligations The Company recognizes liabilities on its consolidated statements of financial position and expenses in its statements of comprehensive income to reflect its obligations related to its post-retirement seniority premiums, pension and retirement plans in the countries in which it operates and offer defined contribution and benefit The Company uses estimates in four specific areas that have a significant effect on these amounts: (i) the rate of return the Company assumes its pension plans will earn on its investments, (ii) the salaries increase rate that the Company assumes it will observe in future years, (iii) the discount rates that the Company uses to calculate the present value of its future obligations and (iv) the expected inflation rate. The assumptions applied are further disclosed in Note 18. These estimates are determined based on actuarial studies performed by independent experts using the projected unit-credit method.
Discontinued operations	Ac) Discontinued operations On September 14, 2020, the Company, announced that it ha d d AMX received a closing consideration of US$3,625.7 million in cash, which includes US$500.7 million related to TracFone’s closing cash and working capital, customary adjustment and other adjustments and 57,596,544 shares of Verizon stock valued at approximately US$2,968 million. Following the transaction closing, Verizon shall pay to AMX: (i) up to US$500 million as an earn-out if TracFone continues to achieve certain performance measures during the 24 months following the closing, calculated and paid in 4 consecutive semesters periods, and (ii) US$150 million deferred consideration payable within two years following the transaction closing. The earn-out was not recognized as gain by the Company, in accordance with IFRS 9, 13 and IAS 37 , since and the inflow of economic benefits are virtually certain. TracFone was deconsolidated from that date resulting in a net including the recycling of foreign currency exchange losses accumulated in equity. This gain has been recognized under profit after tax from discontinued operations in the consolidated statements of comprehensive income. Furthermore, no impairment loss was identified. Moreover, TracFone had identifiable operations and cash flows and represented a separate geographical area. Therefore, in accordance with IFRS 5, TracFone was classified as discontinued operations for all years presented in these consolidated financial statements; results were accordingly presented as a single amount as profit after tax from discontinued operations in the consolidated statements of comprehensive income. The consolidated statements of comprehensive income comparative figures have therefore been restated accordingly. All other notes to the consolidated financial statements include amounts for continuing operations, unless indicated otherwise. Additionally, TracFone represented the U.S.A. segment until November 23, 2021. With TracFone being classified as discontinued operations, the U.S.A. segment is no longer presented in the segment note. The results of TracFone for the year are presented below: For the years ended December 31 2019 2020 2021 Operating revenues: Service revenues Ps. 131,403,268 Ps. 149,376,532 Ps. 130,091,540 Sales of equipment 24,461,125 27,802,837 22,160,481 155,864,393 177,179,369 152,252,021 Total costs and expenses 144,822,141 157,327,836 134,495,316 Operating income 11,042,252 19,851,533 17,756,705 Financial cost (77,884 ) (2,026 ) (1,733 ) Gain on disposal of discontinued operations — — 132,821,709 Profit before income tax discontinued operations 10,964,368 19,849,507 150,576,681 Tax expense: Related to pre-tax profit from the ordinary activities for the period 1,119,479 2,856,882 2,571,541 Related to gain on disposal from discontinued operations — — 26,294,422 Net profit for the year from discontinued operations Ps. 9,844,889 Ps. 16,992,625 Ps. 121,710,718 The assets and liabilities deconsolidated on the date of the disposal were as follows: November 23, 2021 Current assets Cash Ps. 338,439 Subscribers, distributors, recoverable taxes, contract assets and other net 12,368,407 Inventories, net 9,604,658 Other current assets, net 389,052 Total current assets 22,700,556 Non-current assets: Property, plant and equipment 1,989,498 Intangibles, net 555,012 Goodwill 2,695,557 Deferred income taxes 1,094,756 Other assets, net 327,546 Rights of use 1,625 Total assets Ps. 29,364,550 Short term liability related to rigth of use of assets Ps. 1,625 Accounts payable 17,446,513 Income tax 3,267,585 Deferred revenue 13,187,667 Total liabilities 33,903,390 Net liability Ps. (4,538,840 ) Furthermore, pursuant to the Stock Purchase Agreement, the Company agreed to indemnify Verizon against pre-closing tax matters. As of the closing, certain tax related matters had not been resolved, and Verizon has asserted post-closing claims under the adjustments and other provisions of this agreements, which may result in payments by us.
Retrospective adjustment	Ad) Reclassification The Company reclassified Ps. 4,540,344 from current equity investments at fair value through other comprehensive income (OCI) to non-current debt instruments at fair value through other comprehensive income (OCI) as of December 31, 2020.

Basis of Preparation of the C_3

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices (Tables)	12 Months Ended
	Dec. 31, 2021
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Summary of Equity Interest in Most Significant Subsidiaries	The equity interest in the most significant subsidiaries at December 31, 2020 and 2021 is as follows: Company name Country Equity 2020 2021 Subsidiaries: América Móvil B.V. a) Netherlands 100.0 % 100.0 % Compañía Dominicana de Teléfonos, S.A. (“Codetel”) b) Dominican Republic 100.0 % 100.0 % Sercotel, S.A. de C.V. a) Mexico 100.0 % 100.0 % Radiomóvil Dipsa, S.A. de C.V. and subsidiaries (“Telcel”) b) Mexico 100.0 % 100.0 % Puerto Rico Telephone Company, Inc. b) Puerto Rico 100.0 % 100.0 % Servicios de Comunicaciones de Honduras, S.A. de C.V. (“Sercom Honduras”) b) Honduras 100.0 % 100.0 % TracFone Wireless, Inc. (“TracFone”) b) c) USA 100.0 % — Claro S.A. (Claro Brasil) b) Brazil 98.2 % 98.2 % NII Brazil Holding S.A.R.L a) Luxembourg 100.0 % 100.0 % Nextel Telecomunicações Ltda b) Brazil 100.0 % 100.0 % Telecomunicaciones de Guatemala, S.A. (“Telgua”) b) Guatemala 99.3 % 99.3 % Claro Guatemala, S.A. b) Guatemala 100.0 % 100.0 % Empresa Nicaragüense de Telecomunicaciones, S.A. (“Enitel”) b) Nicaragua 99.6 % 99.6 % Compañía de Telecomunicaciones de El Salvador, S.A. de C.V. (“CTE”) b) El Salvador 95.8 % 95.8 % Comunicación Celular, S.A. (“Comcel”) b) Colombia 99.4 % 99.4 % Consorcio Ecuatoriano de Telecomunicaciones, S.A. (“Conecel”) b) Ecuador 100.0 % 100.0 % AMX Argentina, S.A. b) Argentina 100.0 % 100.0 % AMX Paraguay, S.A. b) Paraguay 100.0 % 100.0 % AM Wireless Uruguay, S.A. b) Uruguay 100.0 % 100.0 % Claro Chile, S.A. b) Chile 100.0 % 100.0 % América Móvil Perú, S.A.C b) Peru 100.0 % 100.0 % Claro Panamá, S.A. b) Panamá 100.0 % 100.0 % Teléfonos de México, S.A.B. de C.V. b) Mexico 98.8 % 98.8 % Telekom Austria AG b) Austria 51.0 % 51.0 % a) Holding companies b) Operating companies of mobile and fixed services c) On November 23, 2021, this entity was discontinued operations. See Note 2Ac.
Summary of Annual Depreciation Rates	Annual depreciation rates are as follows: Network infrastructure 5%-33% Buildings and leasehold improvement 2%-33% Other assets 10%-50%
Summary of Most Significant Forward Looking Estimates Used for Impairment Evaluations	The most significant forward-looking estimates used for the 2020 and 2021 impairment evaluations are shown below: Average margin on Average margin on Average pre-tax 2020: Europe (7 countries) 32.20% - 40.76% 7.04% - 19.39% 3.88% - 12.02% Brazil (fixed line, wireless and TV) 40.67% 25.36% 9.50% Puerto Rico 23.06% 14.57% 3.53% Dominican Republic 47.57% 13.71% 8.27% Mexico (fixed line and wireless) 32.69% 11.01% 6.03% Ecuador 49.23% 11.14% 17.50% Peru 38.72% 15.43% 4.76% El Salvador 45.92% 21.19% 14.63% Chile 26.34% 13.18% 3.37% Colombia 43.45% 18.19% 6.44% Other countries 10.07% - 47.23% 0.48% - 31.67% 3.42% - 21.85% 2021: Europe (7 countries) 31.60% - 45.32% 7.48% - 24.37% 2.91% - 9.83% Brazil (fixed line, wireless and TV) 41.37% 22.98% 4.62% Puerto Rico 21.54% 14.36% 3.00% Dominican Republic 52.02% 13.86% 5.84% Mexico (fixed line and wireless) 36.21% 15.89% 6.24% Ecuador 44.76% 12.48% 14.48% Peru 36.63% 17.19% 3.99% El Salvador 44.82% 24.25% 10.78% Chile 27.36% 17.98% 2.81% Colombia 43.36% 23.18% 7.18% Other countries 30.55% - 48.52% 4.91% - 30.03% 4.64% - 14.39%
Summary of quantitative information about right-of-use assets	Right-of-use assets are depreciated on a straight-line basis over the shorter of the lease term and the estimated useful lives of the assets, as follows: Assets Useful life Towers and sites 5 to 12 years Property 10 to 25 years Other equipment 5 to 15 years
Summary of Exchange Rates Used forTranslation of Foreign Currencies	The exchange rates used for the translation of foreign currencies against the Mexican peso are as follows: Average exchange rate Closing exchange rate Country or Zone Currency 2019 2020 2021 2020 2021 Argentina (1) Argentine Peso (AR$) 0.4110 0.3070 0.2137 0.2371 0.2004 Brazil Real (R$) 4.8907 4.1850 3.7625 3.8387 3.6885 Colombia Colombian Peso (COP$) 0.0059 0.0058 0.0054 0.0058 0.0052 Guatemala Quetzal 2.5023 2.7826 2.6212 2.5596 2.6666 U.S.A. (2) US Dollar 19.2641 21.4860 20.2769 19.9487 20.5835 Uruguay Uruguay Peso 0.5479 0.5110 0.4655 0.4712 0.4605 Nicaragua Cordoba 0.5817 0.6257 0.5765 0.5728 0.5795 Honduras Lempira 0.7806 0.8678 0.8384 0.8215 0.8396 Chile Chilean Peso 0.0275 0.0271 0.0268 0.0281 0.0244 Paraguay Guaraní 0.0031 0.0032 0.0030 0.0029 0.0030 Peru Sol (PEN$) 5.7708 6.1483 5.2297 5.5046 5.1484 Dominican Republic Dominican Peso 0.3737 0.3766 0.3540 0.3416 0.3570 Costa Rica Colon 0.0326 0.0366 0.0325 0.0323 0.0319 European Union Euro 21.5642 24.5080 23.9835 24.3693 23.4220 Bulgaria Lev 11.0257 12.5284 12.2617 12.4594 11.9762 Belarus New Belarusian Ruble 9.2159 8.8172 7.9932 7.5721 8.0279 Croatia Croatian Kuna 2.9069 3.2498 3.1852 3.2279 3.1161 Macedonia Macedonian Denar 0.3504 0.3975 0.3893 0.3950 0.3800 Serbia Serbian Denar 0.1830 0.2083 0.2040 0.2071 0.1992 (1) Year-end rates are used for the translation of revenues and expenses if IAS 29 “Financial Reporting in Hyperinflationary Economies” Financial reporting in hyperinflationary economies Financial statements of Argentina subsidiaries are restated before translation to the reporting currency of the Company and before consolidation in order to reflect the same value of money for all items. Items recognized in the statements of financial position which are not measured at the applicable year-end measuring unit are restated based on the general price index. All non-monetary items measured at cost or amortized cost is restated for the changes in the general price index from the date of transaction or the last hyperinflationary calculation to the reporting date. Monetary items are not restated. All items of shareholders’ equity are restated for the changes in the general price index since their addition or the last hyperinflationary calculation until the end of the reporting period. All items of comprehensive income are restated for the change in a general price index from the date of initial recognition to the reporting date. Gains and losses resulting from the net-position of monetary items are reported in the consolidated
Summary of Net profit for the year from discontinued operations	Additionally, TracFone represented the U.S.A. segment until November 23, 2021. With TracFone being classified as discontinued operations, the U.S.A. segment is no longer presented in the segment note. The results of TracFone for the year are presented below: For the years ended December 31 2019 2020 2021 Operating revenues: Service revenues Ps. 131,403,268 Ps. 149,376,532 Ps. 130,091,540 Sales of equipment 24,461,125 27,802,837 22,160,481 155,864,393 177,179,369 152,252,021 Total costs and expenses 144,822,141 157,327,836 134,495,316 Operating income 11,042,252 19,851,533 17,756,705 Financial cost (77,884 ) (2,026 ) (1,733 ) Gain on disposal of discontinued operations — — 132,821,709 Profit before income tax discontinued operations 10,964,368 19,849,507 150,576,681 Tax expense: Related to pre-tax profit from the ordinary activities for the period 1,119,479 2,856,882 2,571,541 Related to gain on disposal from discontinued operations — — 26,294,422 Net profit for the year from discontinued operations Ps. 9,844,889 Ps. 16,992,625 Ps. 121,710,718
Summary of assets and liabilities deconsolidated on the date of the disposal	The assets and liabilities deconsolidated on the date of the disposal were as follows: November 23, 2021 Current assets Cash Ps. 338,439 Subscribers, distributors, recoverable taxes, contract assets and other net 12,368,407 Inventories, net 9,604,658 Other current assets, net 389,052 Total current assets 22,700,556 Non-current assets: Property, plant and equipment 1,989,498 Intangibles, net 555,012 Goodwill 2,695,557 Deferred income taxes 1,094,756 Other assets, net 327,546 Rights of use 1,625 Total assets Ps. 29,364,550 Short term liability related to rigth of use of assets Ps. 1,625 Accounts payable 17,446,513 Income tax 3,267,585 Deferred revenue 13,187,667 Total liabilities 33,903,390 Net liability Ps. (4,538,840 )
Summary of Retrospective adjustments	The Company reclassified Ps. 4,540,344 from current equity investments at fair value through other comprehensive income (OCI) to non-current debt instruments at fair value through other comprehensive income (OCI) as of December 31, 2020.

Accounts receivable from subs_2

Accounts receivable from subscribers, distributors, recoverable taxes contractual assets and other, net (Tables)	12 Months Ended
	Dec. 31, 2021
Statement [line items]
Summary of Analysis of Accounts Receivable by Component	a) At December 31, 2020 2021 Subscribers and distributors Ps. 168,758,386 Ps. 157,433,609 Telecommunications carriers for network interconnection and other services 4,914,094 3,968,675 Recoverable taxes 44,557,402 43,734,164 Sundry debtors 12,504,566 15,573,586 Contract assets 29,588,104 30,901,277 Impairment of trade receivables (44,551,735 ) (41,835,826 ) Total net Ps. 215,770,817 Ps. 209,775,485 Non-current subscribers, distributors and contractual assets 7,792,863 6,928,888 Total current subscribers, distributors and contractual assets Ps. 207,977,954 Ps. 202,846,597
Schedule of Changes in Allowance for Expected Credit Losses	b) Changes in the impairment of trade receivables is as follows: For the years ended December 31, 2019 2020 2021 Balance at beginning of year Ps.(40,798,025 ) Ps.(39,480,909 ) Ps.(44,551,735 ) Increases recorded in expenses (16,346,395 ) (19,112,635 ) (10,677,421 ) Write-offs (i) 17,839,957 11,953,227 11,682,343 Business combination (3,265,490 ) (2,066 ) — Translation effect 3,089,044 2,090,648 1,710,987 Balance at end of year Ps.(39,480,909 ) Ps.(44,551,735 ) Ps.(41,835,826 ) (i) Includes discontinued operation of Tracfone. See Note 2Ac.
Summary of Aging of Accounts Receivable	c) The following table shows the aging of accounts receivable at December 31, 2020 and 2021, for subscribers and distributors: Past due Total Unbilled services a-30 days 31-60 days 61-90 days Greater than December 31, 2020 Ps. 168,758,386 Ps. 75,972,811 Ps. 37,439,995 Ps. 5,325,264 Ps. 3,313,835 Ps. 46,706,481 December 31, 2021 Ps. 157,433,609 Ps. 69,082,837 Ps. 35,694,272 Ps. 4,533,604 Ps. 2,645,034 Ps. 45,477,862
Summary of Accounts Receivable from Subscribers and Distributors Included in the Allowance for Doubtful Accounts	d) The following table shows the accounts receivable from subscribers and distributors included in the impairments of trade receivables, as of December 31, 2020 and 2021: Total 1-90 days Greater than December 31, 2020 Ps. 44,551,735 Ps. 4,455,174 Ps. 40,096,561 December 31, 2021 Ps. 41,835,826 Ps. 4,183,583 Ps. 37,652,243
Summary of Analysis of Contract Assets and Liabilities	e) An analysis of contract assets and liabilities at December 31, 2020 and 2021 is as follows: 2020 2021 Contract Assets: Balance at the beginning of the year Ps. 34,274,007 Ps. 29,588,104 Additions 27,242,031 31,758,626 Disposals (1,397,714 ) (5,946,487 ) Amortization (29,002,995 ) (25,354,712 ) Translation effect (1,527,225 ) 855,746 Balance at the end of the year Ps. 29,588,104 Ps. 30,901,277 Non-current contract assets Ps. 817,740 Ps. 989,519 Current portion contracts assets Ps. 28,770,364 Ps. 29,911,758

Related Parties (Tables)

Related Parties (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Analysis of the Balances with Related Parties	a) The following is an analysis of the balances with related parties as of December 31, 2020 and 2021. All of the companies were considered affiliates of América Móvil since the Company’s principal shareholders are either direct or indirect shareholders in the related parties. 2020 2021 Accounts receivable: Sears Roebuck de México, S.A. de C.V. and Subsidiaries Ps. 233,402 Ps. 339,366 Sanborns Hermanos, S.A. 160,116 192,599 Patrimonial Inbursa, S.A. 327,985 145,676 Grupo Condumex, S.A. de C.V. and Subsidiaries 10,038 122,555 Hubard y Bourlon, S.A. de C.V. 437,231 52,026 Claroshop.com, S.A.P.I de C.V. 100,075 40,906 Other 122,453 265,483 Total Ps. 1,391,300 Ps. 1,158,611 2020 2021 Accounts payable: Carso Infraestructura y Construcción, S.A. de C.V. and Subsidiaries Ps. 2,192,405 Ps. 1,273,085 Grupo Condumex, S.A. de C.V. and Subsidiaries 1,054,526 1,709,487 Fianzas Guardiana Inbursa, S.A. de C.V. 241,898 385,287 Claroshop.com, S.A.P.I de C.V. 4,300 247,081 Grupo Financiero Inbursa, S.A.B. de C.V. 234,954 102,314 Seguros Inbursa, S.A. de C.V. 92,173 113,089 Sociedad Financiera Inbursa, S.A. de C.V. — 80,382 PC Industrial, S.A. de C.V. and Subsidiaries 44,198 4,761 Enesa, S.A. de C.V. and Subsidiaries 22,014 9,384 Other 113,448 292,012 Total Ps. 3,999,916 Ps. 4,216,882
Summary of Transactions with Related Parties	b) For the years ended December 31, 2019, 2020 and 2021, the Company conducted the following transactions with related parties: 2019 2020 2021 Investments and expenses: Construction services, purchases of materials, inventories and property, plant and equipment (i) Ps. 8,573,894 Ps. 7,130,769 Ps. 13,544,289 Insurance premiums, fees paid for administrative and operating services, brokerage services and others (ii) 4,590,620 4,375,113 4,336,133 Other services 1,277,404 1,101,528 1,617,102 Ps. 14,441,918 Ps. 12,607,410 Ps. 19,497,524 Revenues: Service revenues Ps. 538,110 Ps. 608,248 Ps. 714,148 Sales of equipment (iii) 944,697 656,801 7,629,181 Ps. 1,482,807 Ps. 1,265,049 Ps. 8,343,329 i) In 2021, this amount includes Ps. ii) In 2021, this amount includes Ps. iii) In November 2021, a subsidiary of Telmex sold certain tower assets to Telesites, S.A.B. de C.V. iv) The amounts related to payments for tower lease are reflected in Note 15.

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Schedule of Derivative Financial Instruments Contracted	An analysis of the derivative financial instruments contracted by the Company at December 31, 2020 and 2021 is as follows: At December 31, 2020 2021 Instrument Notional amount in Fair Value Notional amount in Fair Value Assets: Swaps US Dollar – Mexican Peso US$ 3,490 Ps. 16,806,937 US$ 1,890 Ps. 6,881,934 Swaps US Dollar – Euro US$ 150 117,726 US$ 150 307,646 Swaps Yen – US Dollar ¥ 9,750 269,215 ¥ 6,500 119,325 Swaps Pound Sterling – US Dollar £ 1,010 2,237,919 £ 100 99,463 Forwards US Dollar – Mexican Peso US$ 240 39,607 US$ 2,080 321,864 Forwards Mexican Peso – US Dollar — — MX$ 35,419 1,635,087 Forwards Brazilian Real – US Dollar BRL$ 4,193 1,190,292 BRL$ 2,480 127,131 Forwards Euro – US Dollar € 915 266,639 — — Put Option — — € 374 638,347 Total Assets — Ps. 20,928,335 — Ps. 10,130,806 At December 31, 2020 2021 Instrument Notional amount in Fair Value Notional amount in Fair Value Liabilities: Swaps US Dollar – Euro US$ 800 Ps. (4,811,031 ) US$ 800 Ps. (1,270,005 ) Swaps Yen – US Dollar ¥ 3,250 (14,802 ) ¥ 6,500 (119,313 ) Swaps Pound Sterling – Euro £ 640 (3,122,492 ) £ 640 (1,924,941 ) Swap Pound Sterling – US Dollar £ 550 (457,559 ) £ 1,460 (2,117,583 ) Swaps Euro – US Dollar — — € 495 (528,298 ) Swaps Euro – Mexican Peso — — € 750 (680,720 ) Forwards US Dollar – Mexican Peso US$ 3,494 (4,052,852 ) US$ 1,175 (286,937 ) Forwards Brazilian Real – US Dollar BRL$ 1,762 (425,249 ) BRL$ 4,021 (234,822 ) Forwards Euro – US Dollar — — € 815 (1,122,641 ) Forwards US Dollar – Euro — — US$ 8 (1,570 ) Forwards Euro – Mexican Peso € 200 (272,274 ) € 200 (22,182 ) Put option € 374 (1,073,990 ) — — Call option — — € 2,097 (1,725,495 ) Total Liabilities — Ps. (14,230,249 ) — Ps. (10,034,508 )
Summary of Maturities of Notional Amount of Derivatives	The maturities of the notional amount of the derivatives are as follows: Instrument Notional 2022 2023 2024 2025 2026 Thereafter Assets Swaps US Dollar-Mexican Peso US$ — — — — 1,890 Swaps Yen-US Dollar ¥ — — — — 6,500 Swaps US Dollar – Euro US$ — — — — 150 Swaps Pound Sterling – US Dollar £ — — — — 100 Forwards US Dollar-Mexican Peso US$ 2,080 — — — — Forwards Mexican Peso – US Dollar MX$ 35,419 — — — — Forwards Brazilian Real-US Dollar BRL 2,480 — — — — Put Option € — 374 — — — Liabilities Swaps US Dollar-Euro US$ — — — — 800 Swaps Euro – US Dollar € — 320 175 — — Swaps Euro – Mexican Peso US$ — 750 — — — Swaps Yen-US Dollar ¥ — — — — 6,500 Swaps Pound Sterling-Euro £ — — — — 640 Swap Pound Sterling-US Dollar £ — — — — 1,460 Forwards US Dollar – Mexican Peso US$ 1,175 — — — — Forwards Euro – US Dollar € 765 — 50 — — Forwards US Dollar—Euro US$ 8 — — — — Forwards Brazilian Real-US Dollar BRL 4,021 — — — — Forwards Euro – Mexican Peso € 200 — — — — Call option € — — 2,097 — —

Inventories, net (Tables)

Inventories, net (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Analysis of Inventories	An analysis of inventories at December 31, 2020 and 2021 is as follows: 2020 2021 Mobile phones, accessories, computers, TVs, cards and other materials Ps.33,763,086 Ps. Less: Reserve for obsolete and slow-moving inventories (3,385,647 ) (1,946,211 ) Total Ps.30,377,439 Ps.

Other assets, net (Tables)

Other assets, net (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Analysis of Other Assets	An analysis of other assets at December 31, 2020 and 2021 is as follows: 2020 2021 Current portion: Advances to suppliers (different from PP&E and inventories) Ps. 7,600,644 Ps. 7,474,932 Prepaid insurance 1,300,019 1,749,589 Other 93,244 227,731 Ps. 8,993,907 Ps. 9,452,252 Non-current portion: Recoverable taxes Ps. 11,559,961 Ps. 11,689,094 Prepayments for the use of fiber optics 2,709,358 3,783,496 Judicial Deposits (1) 15,402,840 14,583,504 Prepaid expenses 8,743,667 9,899,996 Total Ps. 38,415,826 Ps. 39,956,090

Property, Plant and Equipment_2

Property, Plant and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2021
Statement [line items]
Schedule of Property, Plant and Equipment, Net	a) At December 31, Additions Retirements Business Effect of Depreciation At December 31, Cost Network in operation and equipment Ps. 969,195,936 Ps. 82,992,062 Ps. (13,417,360 ) Ps. 9,572,805 Ps. (57,669,840 ) Ps. — Ps. 990,673,603 Land and buildings 57,130,326 1,530,677 (4,025,222 ) 115,935 (3,950,463 ) — 50,801,253 Other assets 149,809,137 26,881,611 (7,594,735 ) 1,021,051 (7,776,500 ) — 162,340,564 Construction in process and advances plant suppliers (1) 81,092,529 82,640,305 (76,892,011 ) 209,790 (5,511,439 ) — 81,539,174 Spare parts for operation of the network 28,444,529 44,776,904 (36,525,735 ) — (2,462,605 ) — 34,233,093 Total 1,285,672,457 238,821,559 (138,455,063 ) 10,919,581 (77,370,847 ) — 1,319,587,687 Accumulated depreciation Network in operation and equipment 560,005,547 — (24,954,514 ) — (47,778,627 ) 93,097,695 580,370,101 Buildings 8,810,949 — (287,072 ) — (1,386,974 ) 2,330,405 9,467,308 Other assets 76,533,494 — (695,425 ) — (4,754,982 ) 19,249,104 90,332,191 Spare parts for operation of the network 321,747 — (283,986 ) — (79,226 ) 116,182 74,717 Total Ps. 645,671,737 Ps. — Ps. (26,220,997 ) Ps. — Ps. (53,999,809 ) Ps. 114,793,386 Ps. 680,244,317 Net Cost Ps. 640,000,720 Ps. 238,821,559 Ps. (112,234,066 ) Ps. 10,919,581 Ps. (23,371,038 ) Ps. (114,793,386 ) Ps. 639,343,370 At December 31, Additions Retirements Business Revaluation Transfers Effect of Depreciation At December 31, Cost Network in operation and equipment Ps. 990,673,603 Ps. 90,387,449 Ps. (19,574,391 ) Ps. 996,974 Ps. 107,152,628 Ps. (62,050,212 ) Ps. (49,993,808 ) Ps. — Ps. 1,057,592,243 Land and buildings 50,801,253 570,062 (2,853,037 ) — — — 369,300 — 48,887,578 Other assets 162,340,564 17,474,218 (14,454,598 ) 55,848 — — (8,393,187 ) — 157,022,845 Construction in process and advances plant suppliers (1) 81,539,174 59,635,316 (68,661,847 ) 1,099 — — (5,011,829 ) — 67,501,913 Spare parts for operation of the network 34,233,093 30,721,413 (37,829,818 ) — — — (2,328,430 ) — 24,796,258 Total 1,319,587,687 198,788,458 (143,373,691 ) 1,053,921 107,152,628 (62,050,212 ) (65,357,954 ) — 1,355,800,837 Accumulated depreciation Network in operation and equipment 580,370,101 — (25,726,856 ) — — (62,050,212 ) ( 2 (58,055,450 ) 96,729,723 531,267,306 Buildings 9,467,308 — (1,663,796 ) — — — (622,253 ) 1,906,140 9,087,399 Other assets 90,332,191 — (9,317,821 ) — — — (5,120,175 ) 16,549,822 92,444,017 Spare parts for operation of the network 74,717 — (176,131 ) — — — 38,898 135,000 72,484 Total Ps. 680,244,317 Ps. — Ps. (36,884,604 ) Ps. — Ps. — Ps. (62,050,212 ) Ps. (63,758,980 ) Ps. 115,320,685 P s 632,871,206 Net Cost Ps. 639,343,370 Ps. 198,788,458 Ps. (106,489,087 ) Ps. 1,053,921 Ps. 107,152,628 . — Ps. (1,598,974 ) Ps. (115,320,685 ) Ps. 722,929,631 At December 31, Additions Retirements (3) Business Transfers Effect of Depreciation At December 31, Cost Network in operation and equipment Ps. 1,057,592,243 Ps. 89,696,150 Ps. (45,044,049 ) Ps. — Ps. 53,531,590 Ps. (44,061,097 ) Ps. — Ps 1,111,714,837 Land and buildings 48,887,578 784,460 (473,785 ) — 38,250 (1,216,894 ) — 48,019,609 Other assets 157,022,845 10,782,903 (11,994,756 ) — (1,800,756 ) (1,870,104 ) — 152,140,132 Construction in process and advances plant suppliers (1) 67,501,913 83,366,813 (47,178,796 ) — (38,944,421 ) (1,420,843 ) — 63,324,666 Spare parts for operation of the network 24,796,258 46,909,494 (23,108,928 ) — (13,824,767 ) (974,011 ) — 33,798,046 Total 1,355,800,837 231,539,820 (127,800,314 ) — (1,000,104 ) (49,542,949 ) — 1,408,997,290 Accumulated depreciation Network in operation and equipment 531,267,306 — (24,322,904 ) — 638,066 (30,254,288 ) 97,343,878 574,672,058 Buildings 9,087,399 — (219,030 ) — (221,937 ) (738,748 ) 1,941,819 9,849,503 Other assets 92,444,017 — (10,522,319 ) — 549,855 (2,522,458 ) 13,310,584 93,259,679 Spare parts for operation of the network 72,484 — (92,421 ) — — (26,823 ) 66,131 19,371 Total Ps 632,871,206 Ps — Ps. (35,156,674 ) Ps. — Ps. (965,984 ) Ps (33,542,317 ) Ps. 112,662,412 Ps 677,800,611 Net Cost Ps 722,929,631 Ps 231,539,820 Ps (92,643,640 ) Ps. — Ps. (1,966,088 ) Ps. (16,000,632 ) Ps (112,662,412 ) Ps 731,196,679 (1) Construction in progress includes fixed and mobile network facilities as well as satellite developments and fiber optic which is in the process of being installed. (2) This transfer relates to the accumulated depreciation as at the revaluation date that was eliminated against the gross carrying amount of the revalued asset. (3) Includes disposals related to the sale of TracFone. See Note 2Ac.
Schedule of Relevant Information Related to Computation of Capitalized Borrowing Costs	Year ended December 31, 2019 2020 2021 Amount invested in the acquisition of qualifying assets Ps. 50,783,957 Ps. 46,528,232 Ps. 38,573,605 Capitalized interest 2,233,358 1,771,613 1,527,259 Capitalization rate 4.4 % 3.8 % 4.0 %
Summary of fair value measurement for the revalued telecommunications towers	2020 2021 Book value as of December 31, (cost model) Ps. 615,777,003 Ps. 633,024,004 Supplement for change in accounting policy 107,152,628 98,172,675 Book value and fair value as of December 31, (revaluation model) Ps. 722,929,631 Ps. 731,196,679

Intangible assets, net and go_2

Intangible assets, net and goodwill (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Analysis of Intangible Assets	a) For the year ended December 31, 2019 Balance at Acquisitions Acquisitions Disposals and Amortization Effect of Balance at end Licenses and rights of use Ps. 233,478,974 Ps. 13,206,877 Ps. 7,844,339 Ps. 7,286,114 Ps. — Ps. (15,715,442 ) Ps. 246,100,862 Accumulated amortization (130,180,579 ) — — (2,391,624 ) (11,577,160 ) 9,481,480 (134,667,883 ) Net 103,298,395 13,206,877 7,844,339 4,894,490 (11,577,160 ) (6,233,962 ) 111,432,979 Trademarks 28,207,166 53,467 — (6,012 ) — (835,613 ) 27,419,008 Accumulated amortization (23,539,961 ) — — — (1,008,483 ) 618,145 (23,930,299 ) Net 4,667,205 53,467 — (6,012 ) (1,008,483 ) (217,468 ) 3,488,709 Customer relationships 25,543,068 20,248 — 5,507 — (2,693,812 ) 22,875,011 Accumulated amortization (18,761,537 ) — — — (3,371,924 ) 2,357,831 (19,775,630 ) Net 6,781,531 20,248 — 5,507 (3,371,924 ) (335,981 ) 3,099,381 Software licenses 14,309,258 2,729,480 — (949,858 ) — (2,984,770 ) 13,104,110 Accumulated amortization (7,704,803 ) — — (1 ) (2,479,088 ) 2,183,149 (8,000,743 ) Net 6,604,455 2,729,480 — (949,859 ) (2,479,088 ) (801,621 ) 5,103,367 Content rights 7,549,709 1,427,694 — 1,638,007 — (455,228 ) 10,160,182 Accumulated amortization (6,763,592 ) — — (8,720 ) (1,772,779 ) 429,862 (8,115,229 ) Net 786,117 1,427,694 — 1,629,287 (1,772,779 ) (25,366 ) 2,044,953 Total of intangibles, net Ps. 122,137,703 Ps. 17,437,766 Ps. 7,844,339 Ps. 5,573,413 Ps. (20,209,434 ) Ps. (7,614,398 ) Ps. 125,169,389 Goodwill Ps. 145,566,497 Ps — Ps. 10,869,571 Ps. (843,005 ) — Ps. (2,693,262 ) Ps. 152,899,801 For the year ended December 31, 2020 Balance at Acquisitions Acquisitions Disposals and Amortization Effect of Balance at end Licenses and rights of use Ps. 246,100,862 Ps. 15,079,714 Ps. 4,436,313 Ps. 1,502,981 Ps. — Ps. (14,029,709 ) Ps. 253,090,161 Accumulated amortization (134,667,883 ) — — 105,892 (14,274,497 ) 14,227,424 (134,609,064 ) Net 111,432,979 15,079,714 4,436,313 1,608,873 (14,274,497 ) 197,715 118,481,097 Trademarks 27,419,008 162,309 12,110 4,000 — 1,534,938 29,132,365 Accumulated amortization (23,930,299 ) — — (4,276 ) (300,727 ) (1,119,645 ) (25,354,947 ) Net 3,488,709 162,309 12,110 (276 ) (300,727 ) 415,293 3,777,418 Customer relationships 22,875,011 1,935 2,689,718 (5,763 ) — 4,018,365 29,579,266 Accumulated amortization (19,775,630 ) — — 855 (1,654,237 ) (3,996,593 ) (25,425,605 ) Net 3,099,381 1,935 2,689,718 (4,908 ) (1,654,237 ) 21,772 4,153,661 Software licenses 13,104,110 2,445,784 36 (2,485,429 ) — 4,236,645 17,301,146 Accumulated amortization (8,000,743 ) — — 2,013,617 (2,667,870 ) (3,578,452 ) (12,233,448 ) Net 5,103,367 2,445,784 36 (471,812 ) (2,667,870 ) 658,193 5,067,698 Content rights 10,160,182 1,570,415 — (313,942 ) — 619,657 12,036,312 Accumulated amortization (8,115,229 ) — — — (1,440,749 ) (503,241 ) (10,059,219 ) Net 2,044,953 1,570,415 — (313,942 ) (1,440,749 ) 116,416 1,977,093 Total of intangibles, net Ps. 125,169,389 Ps. 19,260,157 Ps. 7,138,177 Ps. 817,935 Ps. (20,338,080 ) Ps. 1,409,389 Ps. 133,456,967 Goodwill Ps. 152,899,801 Ps. — Ps. (7,014,120 ) Ps. (537,343 ) Ps. — Ps. (2,295,479 ) Ps. 143,052,859 For the year ended December 31, 2021 Balance at Acquisitions Disposals and Amortization Effect of Balance at end Licenses and rights of use Ps. 253,090,161 Ps. 24,406,905 Ps. (4,427,685 ) Ps. — Ps. (7,011,691 ) Ps. 266,057,690 Accumulated amortization (134,609,064 ) — 6,764,067 (14,682,451 ) 6,737,503 (135,789,945 ) Net 118,481,097 24,406,905 2,336,382 (14,682,451 ) (274,188 ) 130,267,745 Trademarks (1) 29,132,365 75,100 (1,129,666 ) — (401,946 ) 27,675,853 Accumulated amortization (25,354,947 ) — 802,717 (140,205 ) 308,745 (24,383,690 ) Net 3,777,418 75,100 (326,949 ) (140,205 ) (93,201 ) 3,292,163 Customer relationships (1) 29,579,266 229,936 (4,133,408 ) — (1,105,668 ) 24,570,126 Accumulated amortization (25,425,605 ) — 3,830,742 (707,500 ) 1,093,401 (21,208,962 ) Net 4,153,661 229,936 (302,666 ) (707,500 ) (12,267 ) 3,361,164 Software licenses 17,301,146 2,660,330 (3,484,755 ) — (1,225,585 ) 15,251,136 Accumulated amortization (12,233,448 ) (626 ) 3,482,440 (2,738,978 ) 1,052,938 (10,437,674 ) Net 5,067,698 2,659,704 (2,315 ) (2,738,978 ) (172,647 ) 4,813,462 Content rights 12,036,312 818,436 (281,747 ) — 429,319 13,002,320 Accumulated amortization (10,059,219 ) — (147,668 ) (899,666 ) (404,537 ) (11,511,090 ) Net 1,977,093 818,436 (429,415 ) (899,666 ) 24,782 1,491,230 Total of intangibles, net Ps. 133,456,967 Ps. 28,190,081 Ps. 1,275,037 Ps. (19,168,800 ) Ps. (527,521 ) Ps. 143,225,764 Goodwill (1) Ps. 143,052,859 Ps. — Ps. (3,516,287 ) Ps. — Ps. (2,958,378 ) Ps. 136,578,194 (1) Includes disposals related to the sale of TracFone. See Note 2Ac.
Summary of Aggregate Carrying Amount of Goodwill	b) The aggregate carrying amount of goodwill is allocated as follows: 2020 2021 Europe Ps . Ps . Brazil 18,730,686 18,017,916 Puerto Rico 17,463,394 17,463,394 Dominican Republic 14,186,723 14,186,723 Colombia 12,253,743 11,685,585 México 10,148,380 10,164,814 Peru 2,710,979 2,532,770 Chile 2,558,098 2,311,239 El Salvador 2,499,544 2,510,595 United States (Tracfone) (3) 3,362,900 — Ecuador 2,155,384 2,155,384 Guatemala 2,301,533 1,947,203 Other countries 1,293,356 1,295,381 Ps.143,052,859 Ps.136,578,194

Business combinations, acquis_2

Business combinations, acquisitions and non-controlling interest (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about business combination [line items]
Summary of Selected Financial Data From Consolidated Statements of Financial Position	Selected financial data from the consolidated statements of financial position December 31, 2020 2021 Assets: Current assets Ps . 32,775,046 Ps. 39,781,192 Non-current assets 150,747,947 142,407,870 Total assets Ps. 183,522,993 Ps. 182,189,062 Liabilities and equity: Current liabilities Ps. 49,942,415 Ps. 68,795,807 Non-current liabilities 82,293,652 58,312,238 Total liabilities 132,236,067 127,108,045 Equity attributable to equity holders of the parent 26,129,649 28,066,198 Non-controlling interest 25,157,277 27,014,819 Total equity Ps. 51,286,926 Ps. 55,081,017 Total liabilities and equity Ps. 183,522,993 Ps. 182,189,062
Summary of Consolidated Statements of Comprehensive Income	Summarized consolidated statements of comprehensive income For the year ended December 31, 2019 2020 2021 Operating revenues Ps. 98,420,289 Ps. 111,472,191 Ps. 113,838,487 Operating costs and expenses 89,732,428 98,312,325 98,346,896 Operating income Ps. 8,687,861 Ps. 13,159,866 Ps. 15,491,591 Net income Ps. 5,051,145 Ps. 7,787,388 Ps. 9,104,962 Total comprehensive income Ps. 1,466,783 Ps. 12,103,406 Ps. 7,790,499 Net income attributable to: Equity holders of the parent Ps. 2,565,733 Ps. 3,986,412 Ps. 4,629,816 Non-controlling interest 2,485,412 3,800,976 4,475,146 Ps. 5,051,145 Ps. 7,787,388 Ps. 9,104,962 Comprehensive income attributable to: Equity holders of the parent Ps. 748,059 Ps. 6,172,737 Ps. 3,973,154 Non-controlling interest 718,724 5,930,669 3,817,345 Ps. 1,466,783 Ps. 12,103,406 Ps. 7,790,499

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Composition of Income Tax Expense	The composition of income tax expense (benefit) for the years ended December 31, 2019, 2020 and 2021 is as follows: 2019 2020 2021 In Mexico: Current year income tax Ps. 26,295,431 Ps. 13,407,948 Ps. 24,355,240 Deferred income tax 208,658 (9,334,246 ) (5,079,397 ) Foreign: Current year income tax 19,830,227 12,319,690 23,412,990 Deferred income tax 3,579,739 (2,884,122 ) (14,544,064 ) Total Income tax Ps. 49,914,055 Ps. 13,509,270 Ps. 28,144,769 Income Tax attributable to a discontinued operation Income tax discontinued operations in Mexico (1) — — (26,294,422 ) Income tax discontinued operations Foreign (1) (1,119,479 ) (2,856,882 ) (2,571,541 )
Summary of Deferred Tax Related to Items Recognized in OCI	Deferred tax related to items recognized in OCI during the year: For the years ended December 31, 2019 2020 2021 Remeasurement of defined benefit plans Ps. 9,217,320 Ps. 4,151,600 Ps. (4,760,089 ) Equity investments at fair value (378,606 ) (665,814 ) 583,892 Other — (35,670 ) — Revaluation assets — (29,922,597 ) — Deferred tax benefit recognized in OCI Ps. 8,838,714 Ps. (26,472,481 ) Ps. (4,176,197 )
Summary of Reconciliation of Statutory Income Tax Rate in Mexico to Consolidated Effective Income Tax Rate Recognized	A reconciliation of the statutory income tax rate in Mexico to the consolidated effective income tax rate recognized by the Company is as follows: Year ended December 31, 2019 2020 2021 Statutory income tax rate in Mexico 30.0 % 30.0 % 30.0 % Impact of non-deductible and non-taxable items: Tax inflation effects 3.8 % 8.6 % 7.9 % Derivatives (0.1 %) (1.0 %) (0.9 %) Employee benefits 2.0 % 4.2 % 2.6 % Other 2.0 % (3.4 %) (2.9 %) Effective tax rate on Mexican operations 37.7 % 38.4 % 36.7 % Tax recoveries in Brazil — (13.2 %) (10.8 %) Dividends received from associates Equity (0.5 %) (1.3 %) (0.7 %) Foreign subsidiaries and other non-deductible items, net 8.0 % 4.5 % 2.2 % Effective tax rate from continuing operations 45.2 % 28.4 % 27.4 % Effective tax rate from discontinued operations 10.2 % 14.4 % 19.2 %
Summary of Analysis of Temporary Differences Giving Rise to Net Deferred Tax Liability	An analysis of temporary differences giving rise to the net deferred tax assets is as follows: Consolidated statements of financial position Consolidated statements of net income 2020 2021 2019 2020 2021 Provisions Ps. 19,312,081 Ps. 18,038,607 Ps. 318,843 Ps. 3,887,471 Ps. 2,324,227 Deferred revenues 6,748,101 9,041,137 (1,077,259 ) 897,762 2,202,413 Tax losses carry forward 25,121,933 33,954,926 (9,873 ) 2,236,244 10,352,978 Property, plant and equipment (1) (39,459,549 ) (33,445,815 ) (1,067,307 ) 3,990,750 9,246,429 Inventories (537,404 ) 135,658 (55,380 ) (2,394,485 ) 814,626 Licenses and rights of (1) (5,177,924 ) (3,668,389 ) 432,403 344,729 (151,013 ) Employee benefits 45,467,827 40,246,031 (1,019,042 ) 422,473 (354,803 ) Other 14,828,012 13,520,684 (1,310,782 ) 2,833,424 (4,811,396 ) Net deferred tax assets Ps. 66,303,077 Ps. 77,822,839 Deferred tax expense in net profit for the year Ps. (3,788,397 ) Ps. 12,218,368 Ps. 19,623,461 Deferred tax discontinued operations (105,986 ) 73,646 143,482 (1) As of December 31, 2020 and 2021, the balance included the effects of hyperinflation and revaluation of telecommunications towers.
Summary of Reconciliation of Deferred Tax Assets and Liabilities, Net	Reconciliation of deferred tax assets and liabilities, net: 2019 2020 2021 Opening balance as of January 1, Ps. 86,613,327 Ps. 88,074,856 Ps. 66,303,077 Deferred tax benefit (3,894,383 ) 12,292,014 19,623,461 Translation effect 2,047,915 375,105 (727,099 ) Deferred tax benefit recognized in OCI 8,838,714 (26,472,481 ) (4,176,197 ) Deferred taxes acquired in business combinations (276,568 ) (2,580,552 ) — Hyperinflationary effect in Argentina (5,254,149 ) (5,385,865 ) (3,540,962 ) Disposals see to 2Ac — — (1,203,203 ) Related discontinued operation — — 1,543,762 Closing balance as of December 31, Ps. 88,074,856 Ps. 66,303,077 Ps. 77,822,839 Presented in the consolidated statements of financial position as follows: Deferred income tax assets Ps. 106,167,897 Ps. 115,370,240 Ps. 127,287,934 Deferred income tax liabilities (18,093,041 ) (49,067,163 ) (49,465,095 ) Ps. 88,074,856 Ps. 66,303,077 Ps. 77,822,839
Available Tax Loss Carryforwards Recorded in Deferred Tax Assets	a) At December 31, 2021, the available tax loss carryforwards recorded in deferred tax assets are as follows on a country by country basis: Country Gross balance Tax-effected Brazil Ps.71,910,653 Ps.24,449,622 Mexico 14,768,325 4,430,497 Europe 2,031,465 507,866 United States 432,301 112,398 Peru 356,133 105,060 Chile 16,109,194 4,349,483 Total Ps.105,608,071 Ps.33,954,926

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Short- and Long-Term Debt	a) At December 31, 2020 (Thousands of Currency Loan Interest rate Maturity Total Senior Notes U.S. dollars Fixed-rate Senior notes (i) 3.125% 2022 Ps. 31,917,920 Fixed-rate Senior notes (i) 3.625% 2029 19,948,700 Fixed-rate Senior notes (i) 2.875% 2030 19,948,700 Fixed-rate Senior notes (i) 6.375% 2035 19,576,258 Fixed-rate Senior notes (i) 6.125% 2037 7,365,559 Fixed-rate Senior notes (i) 6.125% 2040 39,897,400 Fixed-rate Senior notes (i) 4.375% 2042 22,941,005 Fixed-rate Senior notes (i) 4.375% 2049 24,935,875 Subtotal U.S. dollars Ps. 186,531,417 Mexican pesos Fixed-rate Senior notes (i) 6.450% 2022 Ps. 22,500,000 Fixed-rate Senior notes (i) 7.125% 2024 11,000,000 Domestic Senior notes (i) 0.000% 2025 4,911,181 Fixed-rate Senior notes (i) 8.460% 2036 7,871,700 Domestic Senior notes (i) 8.360% 2037 5,000,000 Subtotal Mexican pesos Ps. 51,282,881 Euros Fixed-rate Senior notes (i) 3.000% 2021 Ps. 24,369,332 Fixed-rate Senior notes (i) 3.125% 2021 18,276,999 Fixed-rate Senior notes (i) 4.000% 2022 18,276,999 Fixed-rate Senior notes (i) 4.750% 2022 18,276,999 Fixed-rate Senior notes (i) 3.500% 2023 7,310,800 Fixed-rate Senior notes (i) 3.259% 2023 18,276,999 Fixed-rate Senior notes (i) 1.500% 2024 20,713,932 Fixed-rate Senior notes (i) 1.500% 2026 18,276,999 Fixed-rate Senior notes (i) 0.750% 2027 24,369,332 Fixed-rate Senior notes (i) 2.125% 2028 15,840,066 Commercial Paper (iv) (0.230%) - (0.310%) 2021 40,940,477 Subtotal Euros Ps. 224,928,934 Pound sterling Fixed-rate Senior notes (i) 5.000% 2026 Ps. 13,634,936 Fixed-rate Senior notes (i) 5.750% 2030 17,725,417 Fixed-rate Senior notes (i) 4.948% 2033 8,180,962 Fixed-rate Senior notes (i) 4.375% 2041 20,452,405 Subtotal Pound sterling Ps. 59,993,720 Brazilian reais Debentures (i) 104.000% of CDI 2021 Ps. 4,222,597 Debentures (i) 104.250% of CDI 2021 5,815,668 Promissory notes (i) CDI + 0.600% 2021 1,381,941 Debentures (i) CDI + 0.960% 2022 9,596,811 Promissory notes (i) 106.000% of CDI 2022 7,677,449 Debentures (i) 106.500% of CDI 2022 3,838,725 Subtotal Brazilian reais Ps. 32,533,191 Other currencies Japanese yen Fixed-rate Senior notes (i) 2.950% 2039 Ps. 2,511,701 Subtotal Japanese yen Ps. 2,511,701 Chilean pesos Fixed-rate Senior notes (i) 3.961% 2035 Ps. 4,078,453 Subtotal Chilean pesos Ps. 4,078,453 Subtotal other currencies Ps. 6,590,154 At December 31, 2020 (Thousands of Currency Loan Interest rate Maturity Total Hybrid Notes Euros Euro NC10 Series B Capital 6.375% 2073 Ps. 13,403,133 Subtotal Euros Ps. 13,403,133 Subtotal Hybrid notes Ps. 13,403,133 Lines of Credit and others Mexican pesos Lines of credit (ii) TIIE + 0.300 1.000 2021 Ps. 27,100,000 Peruvian soles Lines of credit (ii) 1.200% - 1.450% 2021 Ps. 17,094,079 Chilean pesos Lines of credit (ii) TAB + 0.350 0.450 2021 Ps. 8,868,181 Financial Leases 8.700% - 8.970% 2021 - 2027 Ps. 57,266 Subtotal Lines of Credit and others Ps. 53,119,526 Total debt Ps. 628,382,956 Less: Short-term debt and current portion of long-term Ps. 148,083,184 Long-term debt Ps. 480,299,772 At December 31, 2021 (Thousands of Currency Loan Interest rate Maturity Total Senior Notes U.S. dollars Fixed-rate Senior notes (i) 3.625% 2029 Ps. 20,583,500 Fixed-rate Senior notes (i) 2.875% 2030 20,583,500 Fixed-rate Senior notes (i) 6.375% 2035 20,199,206 Fixed-rate Senior notes (i) 6.125% 2037 7,599,943 Fixed-rate Senior notes (i) 6.125% 2040 41,167,000 Fixed-rate Senior notes (i) 4.375% 2042 23,671,025 Fixed-rate Senior notes (i) 4.375% 2049 25,729,375 Subtotal U.S. dollars Ps. 159,533,549 Mexican pesos Fixed-rate Senior notes (i) 6.450% 2022 Ps. 22,500,000 Fixed-rate Senior notes (i) 7.125% 2024 11,000,000 Domestic Senior notes (i) 0.000% 2025 5,284,885 Fixed-rate Senior notes (i) 8.460% 2036 7,871,700 Domestic Senior notes (i) 8.360% 2037 5,000,000 Subtotal Mexican pesos Ps. 51,656,585 Euros Fixed-rate Senior notes (i) 4.000% 2022 Ps. 17,566,473 Fixed-rate Senior notes (i) 3.500% 2023 7,026,589 Fixed-rate Senior notes (i) 3.259% 2023 17,566,474 Fixed-rate Senior notes (i) 1.500% 2024 19,908,670 Exchangeable Bond (i) 0.000% 2024 49,115,860 Fixed-rate Senior notes (i) 1.500% 2026 17,566,473 Fixed-rate Senior notes (i) 0.750% 2027 23,421,965 Fixed-rate Senior notes (i) 2.125% 2028 15,224,277 Subtotal euros Ps. 167,396,781 Pound sterling Fixed-rate Senior notes (i) 5.000% 2026 Ps. 13,924,738 Fixed-rate Senior notes (i) 5.750% 2030 18,102,159 Fixed-rate Senior notes (i) 4.948% 2033 8,354,843 Fixed-rate Senior notes (i) 4.375% 2041 20,887,106 Subtotal Pound sterling Ps. 61,268,846 At December 31, 2021 (Thousands of Currency Loan Interest rate Maturity Total Brazilian reais Debentures (i) CDI + 0.960% 2022 Ps. 9,221,172 Promissory notes (i) 106.000% of CDI 2022 7,376,937 Debentures (i) 106.500% of CDI 2022 3,688,469 Subtotal Brazilian reais Ps. 20,286,578 Other currencies Japanese yen Fixed-rate Senior notes (i) 2.950% 2039 Ps. 2,325,617 Subtotal Japanese yen Ps. 2,325,617 Chilean pesos Fixed-rate Senior notes (i) 3.961% 2035 Ps. 3,776,051 Subtotal Chilean pesos Ps. 3,776,051 Subtotal other currencies Ps. 6,101,668 Hybrid Notes Euros Euro NC10 Series B Capital Securities (iii) 6.375% 2073 Ps. 12,882,081 Subtotal Euros Ps. 12,882,081 Subtotal Hybrid Notes Ps. 12,882,081 Lines of Credit and others U.S. dollars Lines of credit (ii) 0.350% - 0.700% 2022 Ps. 14,723,980 Euros Lines of credit (ii) (0.400%) - 2022 Ps. 18,737,572 Mexican pesos Lines of credit (ii) TIIE + 0.280% - 2022 Ps. 34,080,000 Peruvian soles Lines of credit (ii) 0.976% - 1.045% 2022 Ps. 9,815,068 Chilean pesos Lines of credit (ii) TAB + 0.450% 2022 Ps. 7,419,372 Financial Leases 8.700% - 8.970% 2022 - 2027 Ps. 47,743 Others Lines of credit (ii) 15.790% 2022 Ps. 80,279 Subtotal Lines of Credit and others Ps. 84,904,014 Total debt Ps. 564,030,102 Less: Short-term debt and current portion of long-term debt Ps. 145,222,672 Long-term debt Ps. 418,807,430
Summary of Short Term Debt Maturities	An analysis of the Company’s short-term debt maturities as of December 31, 2020, a n 2020 2021 Obligations and Senior Notes Ps. 95,007,014 Ps. 60,353,052 Lines of credit 53,062,260 84,856,270 Financial Leases 13,910 13,350 Subtotal short term debt Ps. 148,083,184 Ps. 145,222,672 Weighted average interest rate 2.23 % 4.02 %
Summary of Long Term Debt Maturities	The Company’s long-term debt maturities are as follows: Years Amount 2023 Ps. 24,599,324 2024 80,031,350 2025 5,292,314 2026 and thereafter 308,884,442 Total Ps. 418,807,430
Summary of Senior Notes Outstanding	The outstanding Senior Notes as of December 31, 2020, and December 31, 2021, are as follows: Currency* 2020 2021 U.S. dollars Ps.186,531,417 Ps.159,533,549 Mexican pesos 51,282,881 51,656,585 Euros 183,988,456 167,396,781 Pound sterling 59,993,720 61,268,846 Brazilian reais 32,533,191 20,286,578 Japanese yens 2,511,701 2,325,617 Chilean pesos 4,078,453 3,776,051 * Thousands of Mexican pesos * Includes secured and unsecured senior notes.

Right-of-use assets and lease_2

Right-of-use assets and lease debt (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of Company right of use asset and Lease liabilities [Abstract]
Schedule of detailed information about right-of-use assets and lease liabilities	At December 31, 2019, 2020 and 2021 the right-of-use Right-of-use Liability related to right-of-use Towers & Sites Property Other Total As of January 1, 2019 Ps. 94,252,098 Ps. 21,075,884 Ps. 4,750,320 Ps. 120,078,302 Ps. 119,387,660 Additions and release 6,364,508 921,542 729,001 8,015,051 7,437,621 Business Combinations 9,668,507 — — 9,668,507 10,810,111 Modifications 7,474,469 1,288,974 728,837 9,492,280 8,363,045 Depreciation (17,286,497 ) (4,941,222 ) (1,365,847 ) (23,593,566 ) — Interest expense — — — — 7,940,240 Payments — — — — (26,765,075 ) Translation adjustment (4,370,636 ) (905,808 ) (380,907 ) (5,657,351 ) (6,576,869 ) Balance at December 31, 2019 Ps. 96,102,449 Ps. 17,439,370 Ps. 4,461,404 Ps. 118,003,223 Ps. 120,596,733 Right-of-use Liability related to right-of-use Towers & Sites Property Other Total Balance at the beginning of the year Ps. 96,102,449 Ps. 17,439,370 Ps. 4,461,404 Ps. 118,003,223 Ps. 120,596,733 Additions and release 5,745,869 309,576 1,514,519 7,569,964 4,833,959 Modifications 8,559,335 (3,035,831 ) 1,048,858 6,572,362 7,769,326 Depreciation (22,064,413 ) (3,440,428 ) (2,866,244 ) (28,371,085 ) — Interest expense — — — — 9,134,288 Payments — — — — (29,623,565 ) Translation adjustment (3,124,365 ) 932,748 393,997 (1,797,620 ) (3,383,500 ) Balance at December 31, 2020 Ps. 85,218,875 Ps. 12,205,435 Ps. 4,552,534 Ps. 101,976,844 Ps. 109,327,241 Right-of-use Liability related to right-of-use Towers & Sites Property Other Total Balance at the beginning of the year Ps. 85,218,875 Ps. 12,205,435 Ps. 4,552,534 Ps. 101,976,844 Ps. 109,327,241 Additions and release 3,145,941 482,456 1,052,022 4,680,419 3,060,042 Modifications 10,945,985 1,024,573 998,161 12,968,719 12,535,394 Depreciation (20,699,207 ) (3,221,499 ) (2,630,526 ) (26,551,232 ) — Interest expense — — — — 7,301,216 Payments — — — — (30,544,750 ) Translation adjustment (2,054,566 ) (554,260 ) (93,531 ) (2,702,357 ) (3,024,918 ) Balance at December 31, 2021 Ps. 76,557,028 Ps. 9,936,705 Ps. 3,878,660 Ps. 90,372,393 Ps. 98,654,225
Schedule of maturity of lease liabilities	The lease debt of the Company is integrated according to its maturities as follows: 2021 Short term Ps. 27,632,357 Long term 71,021,868 Total Ps. 98,654,225 The Company’s long-term debt maturities as of December 31, 2021 are as follows: Year ended December 31, 2023 Ps. 13,370,533 2024 22,664,124 2025 10,342,707 2026 and thereafter 24,644,504 Total Ps. 71,021,868
Summary of lease cost recognized expenses	During the years ended December 31, 2019, 2020 and 2021, the Company recognized expenses as follows: 2019 Others Related parties Total Depreciation expense of right-of-use assets Ps. 18,176,521 Ps. 5,417,045 Ps. 23,593,566 Interest expense on lease liabilities 5,654,721 2,285,519 7,940,240 Expense relating to short-term leases 1,978,403 1,958 1,980,361 Expense relating to leases of low-value assets 25,935 — 25,935 Variable lease payments 1,299,502 — 1,299,502 Total Ps. 27,135,082 Ps. 7,704,522 Ps. 34,839,604 2020 Others Related parties Total Depreciation expense of right-of-use assets Ps. 22,404,924 Ps. 5,966,161 Ps. 28,371,085 Interest expense on lease liabilities 7,081,693 2,052,595 9,134,288 Expense relating to short-term leases 32,238 — 32,238 Expense relating to leases of low-value assets 2,883 — 2,883 Variable lease payments 78,494 — 78,494 Total Ps. 29,600,232 Ps. 8,018,756 Ps. 37,618,988 2021 Others Related parties Total Depreciation expense of right-of-use assets Ps. 19,932,316 Ps. 6,618,916 Ps. 26,551,232 Interest expense on lease liabilities 6,212,774 1,088,442 7,301,216 Expense relating to short-term leases 29,833 — 29,833 Expense relating to leases of low-value assets 685 — 685 Variable lease payments 68,236 — 68,236 Total Ps. 26,243,844 Ps. 7,707,358 Ps. 33,951,202

Accounts payable, accrued lia_2

Accounts payable, accrued liabilities and asset retirement obligations (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Components Account Payable and Accrued Liabilities	a) At December 31, 2020 2021 Suppliers Ps. 74,285,881 Ps. 87,942,106 Sundry creditors 101,406,307 107,111,390 Interest payable 7,661,762 6,827,225 Guarantee deposits from customers 1,386,645 1,577,424 Dividends payable 2,254,877 3,029,536 Total Ps. 186,995,472 Ps. 206,487,681
Summary of Balance of Accrued Liabilities	b) At December 31, 2020 2021 Current liabilities Direct employee benefits payable Ps. 18,965,160 Ps. 20,052,946 Contingencies 31,326,691 34,338,518 Total Ps. 50,291,851 Ps. 54,391,464
Summary of Movements in Contingent Liabilities	The movements in contingencies for the years ended December 31, 2020 and 2021 are as follows: Balance at Business Effect of Increase of Applications Balance at Payments Reversals Contingencies Ps. 34,379,969 Ps. 292 Ps. (4,290,753 ) Ps. 7,442,292 Ps. (3,214,407 ) Ps. (2,990,702 ) Ps. 31,326,691 Balance at Business Effect of Increase of Applications Balance at Payments Reversals Contingencies Ps. 31,326,691 Ps. — Ps. 1,556,950 Ps. 7,425,182 Ps. (4,079,190 ) Ps. (1,891,115 ) Ps. 34,338,518
Summary of Movements in Asset Retirement Obligations	c) Balance at Business Effect of Increase of Applications Balance at Payments Reversals Asset retirement obligations Ps. 15,816,744 Ps. — Ps. 374,418 Ps. 2,412,908 Ps. (593,644 ) Ps. (122,435 ) Ps. 17,887,991 Balance at Business Effect of Increase of Applications Balance at Payments Reversals Asset retirement obligations Ps. 17,887,991 Ps. — Ps. (910,181 ) Ps. 1,273,201 Ps. (148,634 ) Ps. (1,350,154 ) Ps. 16,752,223

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Purchase Commitments	As of December 31, 2021, the total amounts equivalent to the contract period are detailed below: Year ended December 31, 2022 Ps. 7,770,936 2023 3,469,647 2024 2,808,660 2025 and thereafter 19,960,884 Total Ps. 34,010,127

Employee Benefits (Tables)

Employee Benefits (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Analysis of the Net Liability and Net Period Cost for Employee Benefit	An analysis of the net liability and net period cost for employee benefits i s At December 31, 2020 2021 Mexico Ps. 129,260,355 Ps. 110,225,654 Puerto Rico 14,924,874 12,502,377 Brazil 8,913,548 6,108,744 Europe 14,392,445 13,127,228 Ecuador 488,161 601,239 El Salvador 154,422 177,922 Nicaragua 61,337 75,084 Honduras 35,060 32,217 Total Ps. 168,230,202 Ps. 142,850,465 For the year ended December 31 2019 2020 2021 Mexico Ps. 12,788,464 Ps. 14,911,208 Ps. 15,507,652 Puerto Rico 747,755 664,046 548,550 Brazil 511,964 722,412 724,587 Europe 2,526,957 1,701,424 1,753,872 Ecuador 34,425 67,402 111,353 El Salvador — 15,751 19,081 Nicaragua — 3,711 18,561 Honduras — — 4,718 Total Ps. 16,609,565 Ps. 18,085,954 Ps. 18,688,374
Summary of Defined Benefit Obligation (DBO) and Plan Assets for the Pension and Other Benefit Obligation Plans	The defined benefit obligation (DBO) and plan assets for the pension and other benefit obligation plans, by country, are as follows: At December 31 2020 2021 DBO Plan Assets Effect of Net employee DBO Plan Assets Effect of Net employee Mexico Ps. 278,434,302 Ps. (150,090,481 ) Ps. — Ps. 128,343,821 Ps. 286,396,483 Ps. (177,270,561 ) Ps. — Ps. 109,125,922 Puerto Rico 40,240,193 (25,315,319 ) — 14,924,874 38,092,662 (25,590,285 ) — 12,502,377 Brazil 18,568,932 (16,143,783 ) 3,393,640 5,818,789 15,497,227 (15,466,336 ) 4,422,459 4,453,350 Europe 5,490,873 — — 5,490,873 5,093,036 — — 5,093,036 Total Ps. 342,734,300 Ps. (191,549,583 ) Ps. 3,393,640 Ps. 154,578,357 Ps. 345,079,408 Ps. (218,327,182 ) Ps. 4,422,459 Ps. 131,174,685
Summary of the Actuarial Results Generated for the Pension and Retirement Plans as well as the Medical Services	Below is a summary of the actuarial results generated for the pension and retirement plans as well as the medical services in Puerto Rico and Brazil; the pension plans and seniority premiums related to Telmex; the pension plan, the service awards plan and severance in Austria corresponding to the years ended December 31, 2019, 2020 and 2021: At December 31, 2019 DBO Plan Assets Effectofasset Net employee Balance at the beginning of the year Ps. 306,702,447 Ps. (203,671,122 ) Ps. 5,087,543 Ps. 108,118,868 Current service cost 2,591,975 2,591,975 Interest cost on projected benefit obligation 31,001,348 31,001,348 Expected return on plan assets (20,070,037 ) (20,070,037 ) Changes in the asset ceiling during the period and others 445,743 445,743 Past service costs and others 144,481 144,481 Actuarial gain for changes in experience (22,599 ) (22,599 ) Actuarial gain from changes in demographic assumptions (129 ) (129 ) Actuarial loss from changes in financial assumptions 36,163 36,163 Net period cost Ps. 33,606,758 Ps. (19,925,556 ) Ps. 445,743 Ps. 14,126,945 Actuarial loss for changes in experience 31,606,323 31,606,323 Actuarial gain from changes in demographic assumptions (339,657 ) (339,657 ) Actuarial loss from changes in financial assumptions 7,207,072 7,207,072 Changes in the asset ceiling during the period and others (712,064 ) (712,064 ) Return on plan assets greater than discount rate (shortfall) 423,514 423,514 Recognized in other comprehensive income Ps. 38,473,738 Ps. 423,514 Ps. (712,064 ) Ps. 38,185,188 Contributions made by plan participants 155,188 (155,188 ) — Contributions to the pension plan made by the Company (1,337,610 ) (1,337,610 ) Benefits paid (15,836,928 ) 15,836,928 — Payments to employees (16,996,920 ) (16,996,920 ) Effect of translation (3,534,509 ) 2,528,213 (393,201 ) (1,399,497 ) Others Ps. (36,213,169 ) Ps. 16,872,343 Ps. (393,201 ) Ps. (19,734,027 ) Balance at the end of the year 342,569,774 (206,300,821 ) 4,428,021 140,696,974 Less short-term portion (213,065 ) (213,065 ) Non-current obligation Ps. 342,356,709 Ps. (206,300,821 ) Ps. 4,428,021 Ps. 140,483,909 At December 31, 2020 DBO Plan Assets Effect of asset Net employee Balance at the beginning of the year Ps. 342,569,774 Ps. (206,300,821 ) Ps. 4,428,021 Ps. 140,696,974 Current service cost 2,810,584 2,810,584 Interest cost on projected benefit obligation 30,482,173 30,482,173 Expected return on plan assets (17,655,119 ) (17,655,119 ) Changes in the asset ceiling during the period and others 278,639 278,639 Past service costs and other 148,253 148,253 Actuarial gain for changes in experience (8,945 ) (8,945 ) Actuarial gain from changes in demographic assumptions (270 ) (270 ) Actuarial loss from changes in financial assumptions 20,219 20,219 Net period cost Ps. 33,303,761 Ps. (17,506,866 ) Ps. 278,639 Ps. 16,075,534 Actuarial gain for changes in experience (9,677 ) (9,677 ) Actuarial gain from changes in demographic assumptions (103,987 ) (103,987 ) Actuarial loss from changes in financial assumptions 3,475,345 3,475,345 Changes in the asset ceiling during the period and others (542,430 ) (542,430 ) Return on plan assets greater than discount rate (shortfall) 12,320,777 12,320,777 Others (924,084 ) (924,084 ) Recognized in other comprehensive income Ps. 2,437,597 Ps. 12,320,777 Ps. (542,430 ) Ps. 14,215,944 Contributions made by plan participants 137,947 (137,947 ) — Contributions to the pension plan made by the Company (1,882,654 ) (1,882,654 ) Benefits paid (19,740,727 ) 19,740,727 — Payments to employees (14,426,720 ) (14,426,720 ) Effect of translation (1,278,392 ) 2,217,201 (770,590 ) 168,219 Others Ps. (35,307,892) Ps. 19,937,327 Ps. (770,590) Ps. (16,141,155) Balance at the end of the year 343,003,240 (191,549,583 ) 3,393,640 154,847,297 Less short-term portion (268,940 ) (268,940 ) Non-current Ps. 342,734,300 Ps. (191,549,583) Ps. 3,393,640 Ps. 154,578,357 At December 31, 2021 DBO Plan Assets Effect of asset Net employee Balance at the beginning of the year Ps. 343,003,240 Ps. (191,549,583) Ps. 3,393,640 Ps. 154,847,297 Current service cost 2,090,896 2,090,896 Interest cost on projected benefit obligation 28,913,257 28,913,257 Expected return on plan assets (15,112,669 ) (15,112,669 ) Changes in the asset ceiling during the period and others 215,544 215,544 Past service costs and other 139,910 139,910 Actuarial gain for changes in experience (23,024 ) (23,024 ) Actuarial gain from changes in demographic assumptions (48 ) (48 ) Actuarial gain (6,907 ) (6,907 ) Net period cost Ps. 30,974,174 Ps. (14,972,759) Ps. 215,544 Ps. 16,216,959 Actuarial loss 10,728,950 10,728,950 Actuarial gain from changes in demographic assumptions (104,568 ) (104,568 ) Actuarial gain (4,099,321 ) (4,099,321 ) Changes in the asset ceiling during the period and others 969,433 969,433 Return on plan assets greater than discount rate (shortfall) (22,198,615 ) (22,198,615 ) Recognized in other comprehensive income Ps. 6,525,061 Ps. (22,198,615 ) Ps. 969,433 Ps. (14,704,121 ) Contributions made by plan participants 99,201 (99,201 ) — Contributions to the pension plan made by the Company 311,108 311,108 Benefits paid (10,574,420 ) 10,348,544 (225,876 ) Payments to employees (25,042,314 ) (25,042,314 ) Effect of translation 330,770 (166,676 ) (156,158 ) 7,936 Others Ps. (35,186,763) Ps. 10,393,775 Ps. (156,158) Ps. (24,949,146) Balance at the end of the year 345,315,712 (218,327,182 ) 4,422,459 131,410,989 Less short-term portion (236,304 ) (236,304 ) Non-current obligation Ps. 345,079,408 Ps. (218,327,182) Ps. 4,422,459 Ps. 131,174,685
Schedule of Plan Assets Invested	At December 31 2020 2021 Puerto Rico Brazil Mexico Puerto Rico Brazil Mexico Equity instruments 43 % — 68 % 42 % — 74 % Debt instruments 22 % 95 % 32 % 21 % 94 % 26 % Others 35 % 5 % — 37 % 6 % — 100 % 100 % 100 % 100 % 100 % 100 %
Summary of Assumptions Used in Determining the Net Period Cost	The assumptions used in determining the net period cost were as follows: 2019 2020 2021 Puerto Brazil Mexico Europe Puerto Brazil Mexico Europe Puerto Brazil Mexico Europe 0.75%, 0.25%, 0.25%, 1.00% & 6.48% & 0.50% & 8.51% & 0.75% & Discount rate and long-term 3.23 % 7.03 % 10.50 % 1.25% 2.34 % 7.39 % 10.04 % 0.75% 2.75 % 8.67% 10.4 % 1.00% 3.00%, 3.00%, 3.00%, 3.5% & 3.5% & 3.40% & Rate of future salary increases 2.75% 3.80% 3.20% 4.40% 2.75% 3.25% 2.84% 4.10% 2.75% 3.25% 2.80% 4.00% Percentage of increase in health care 3.18% 10.30% 2.28% 9.96% 2.72% 9.44% Year to which this level will be N/A 2029 N/A 2031 NA 2030 Rate of increase of pensions 1.60% 1.60% 1.60% Employee turnover rate* 0.00%-1.38% 0.00%-1.31% 0.00%-1.12% * Depending on years of service
Summary of Increase (Decrease) Would Have Resulted in the DBO Pension and Other Benefits	-100 points +100 points Discount rate Ps. 32,094,727 Ps. (22,626,321 ) Health care cost trend rat Ps. (431,724 ) Ps. 499,356
Summary of Long-Term Direct Employee Benefits	Balance at Effect of Increase of Payments Balance at Long-term direct employee benefits Ps. 8,175,767 Ps. 1,256,880 Ps. 1,729,392 Ps. (2,411,436 ) Ps. 8,750,603 Balance at Effect of Increase of Payments Balance at Long-term direct employee benefits Ps. 8,750,603 Ps. (328,619 ) Ps. 1,824,693 Ps. (2,320,831 ) Ps. 7,925,846

Financial Assets and Liabilit_2

Financial Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Categorization of the Financial Instruments, Excluding Cash and Cash Equivalents	Set out below is the categorization of the financial instruments, excluding cash and cash equivalents, held by the Company as of December 31, 2020 and 2021: December 31, 2020 Loans and Fair value Fair value Financial Assets: Equity investments at fair value through OCI and other short term investments Ps. 62,940 Ps. — Ps. 50,033,111 Accounts receivable from subscribers, distributors, contractual assets and other 171,213,415 — — Related parties 1,391,300 — — Derivative financial instruments (Note 7) — 20,928,335 — Total current assets 172,667,655 20,928,335 50,033,111 Non-current assets Debt instruments — — 4,540,344 Total Ps. 172,667,655 Ps. 20,928,335 Ps. 54,573,455 Financial Liabilities: Debt Ps. 628,382,956 Ps. — Ps. — Liability related to right-of-use of assets 109,327,241 — — Accounts payable 186,995,472 — — Related parties 3,999,916 — — Derivative financial instruments (Note 7) — 14,230,249 — Total Ps. 928,705,585 Ps. 14,230,249 Ps. — December 31, 2021 Loans and Fair value Fair value Financial Assets: Equity investments at fair value through OCI and other short term investments Ps. 15,026 Ps. — Ps. 117,688,176 Accounts receivable from subscribers, distributors, contractual assets and other 166,041,321 — — Related parties 1,158,611 — — Derivative financial instruments (Note 7) — 10,130,806 — Total current assets 167,214,958 10,130,806 117,688,176 Non-current assets Debt instruments — — 6,894,757 Total Ps. 167,214,958 Ps. 10,130,806 Ps. 124,582,933 Financial Liabilities: Debt Ps. 564,030,102 Ps. — Ps. — Liability related to right-of-use of assets 98,654,225 — — Accounts payable 201,341,806 — — Related parties 4,216,882 — — Derivative financial instruments (Note 7) — 10,034,508 — Total Ps. 868,243,015 Ps. 10,034,508 Ps. —
Summary of Fair Value for the Financial Assets (Excluding Cash and Cash Equivalents) and Financial Liabilities	The fair value for the financial assets (excluding cash and cash equivalents) and financial liabilities shown in the consolidated statements of financial position at December 31, 2020 and 2021 is as follows: Measurement of fair value at December 31, 2020 Level 1 Level 2 Level 3 Total Assets: Equity investments at fair value through OCI and other short-term investments Ps. 50,033,111 Ps. 62,940 Ps. — Ps. 50,096,051 Derivative financial instruments (Note 7) — 20,928,335 — 20,928,335 Revalued of assets (Note 23) — — 107,152,628 107,152,628 Pension plan assets (Note 18) 168,939,091 22,589,392 21,100 191,549,583 Total current assets 218,972,202 43,580,667 107,173,728 369,726,597 Debt instruments — 4,540,344 — 4,540,344 Total Ps. 218,972,202 Ps. 48,121,011 Ps. 107,173,728 Ps. 374,266,941 Liabilities: Debt Ps. 578,712,562 Ps. 135,645,912 Ps. — Ps. 714,358,474 Liability related to right-of-use of assets 109,327,241 — — 109,327,241 Derivative financial instruments (Note 7) — 14,230,249 — 14,230,249 Total Ps. 688,039,803 Ps. 149,876,161 Ps. — Ps. 837,915,964 Measurement of fair value at December 31, 2021 Level 1 Level 2 Level 3 Total Assets: Equity investments at fair value through OCI and other short-term investments Ps. 117,688,176 Ps. 15,026 Ps. — Ps. 117,703,202 Derivative financial instruments (Note 7) — 10,130,806 — 10,130,806 Revalued of assets (Note 23) — — 98,172,675 98,172,675 Pension plan assets (Note 18) 196,148,604 22,124,138 54,440 218,327,182 Total current assets 313,836,780 32,269,970 98,227,115 444,333,865 Debt instruments — 6,894,757 — 6,894,757 Total Ps. 313,836,780 Ps. 39,164,727 Ps. 98,227,115 Ps. 451,228,622 Liabilities: Debt Ps. 440,660,165 Ps. 180,122,540 Ps. — Ps. 620,782,705 Liability related to right-of-use of assets 98,654,225 — — 98,654,225 Derivative financial instruments — 10,034,508 — 10,034,508 Total Ps. 539,314,390 Ps. 190,157,048 Ps. — Ps. 729,471,438
Summary of Changes in Liabilities Arising From Financing Activities	Changes in liabilities arising from financing activities At Cash flow Foreign currency At December 31, Debt Ps. 624,254,477 Ps. (53,091,801 ) Ps. 57,220,280 Ps. 628,382,956 Liability related to right-of-use of assets 120,596,733 (29,623,565 ) 18,354,073 109,327,241 Total liabilities from financing activities Ps. 744,851,210 Ps. (82,715,366 ) Ps. 75,574,353 Ps. 737,710,197 At December 31, Cash flow Foreign currency At December 31, Debt Ps. 628,382,956 Ps. (58,354,281 ) Ps. (5,998,573 ) Ps. 564,030,102 Liability related to right-of-use of assets 109,327,241 (30,544,750 ) 19,871,734 98,654,225 Total liabilities from Ps. 737,710,197 Ps. (88,899,031 ) Ps. 13,873,161 Ps. 662,684,327

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Computation of The Basic and Diluted Earnings	The following table shows the computation of the basic and diluted earnings per share: For the years ended December 31, 2019 2020 2021 Net profit for the period attributable Ps. 57,886,001 Ps. 29,859,980 Ps. 70,712,449 Net profit for the period attributable 9,844,889 16,992,625 121,710,718 Net profit for the period attributable 67,730,890 46,852,605 192,423,167 Weighted average shares (in millions) 66,016 66,265 65,967 Earnings per share attributable to Ps. 0.88 Ps. 0.45 Ps. 1.07 Earnings per share attributable to Ps. 0.15 Ps. 0.26 Ps. 1.85

Components of other comprehen_2

Components of other comprehensive loss (income) (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Movement on the Components of the Other Comprehensive Loss	The movement on the components of the other comprehensive (loss) income for the years ended December 31, 2019, 2020 and 2021 is as follows: For the years ended December 31, 2019 2020 2021 Controlling interest: Unrealized gain (loss) on equity investments at fair value, net of deferred taxes Ps. 883,409 Ps. (1,952,414 ) Ps. 4,560,869 Translation effect of foreign entities (34,010,066 ) (13,558,774 ) (4,837,206 ) Translation effect by discontinued operations — — (829,163 ) Remeasurement of defined benefit plan, net of deferred taxes (29,153,554 ) (10,026,454 ) 11,100,835 Asset’s revaluation surplus net of deferred taxes — 64,835,155 — Non-controlling interest of the items above (1,908,304 ) 14,165,249 (2,135,886 ) Other comprehensive (loss) income Ps. (64,188,515 ) Ps. 53,462,762 Ps. 7,859,449

Valuation of derivatives, int_2

Valuation of derivatives, interest cost from labor obligations and other financial items, net (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Schedule of Valuation of Derivatives and Other Financial Items	For the years ended December 31, 2019, 2020 and 2021, valuation of derivatives and other financial items are as follows: For the years ended December 31, 2019 2020 2021 Controlling interest: Gain (loss) in valuation of derivatives, net Ps. 4,432,023 Ps. 12,378,193 Ps. (6,755,214 ) Capitalized interest expense (Note 10 b) 2,233,358 1,771,613 1,527,259 Commissions (2,820,477 ) (1,135,082 ) (1,071,935 ) Interest cost of labor obligations (Note 18) (11,377,054 ) (13,105,693 ) (14,375,520 ) Interest expense on taxes (516,522 ) (59,032 ) (243,075 ) Dividend received (Note 4) 1,773,336 2,122,826 2,628,600 Gain on net monetary positions 4,267,194 3,262,512 4,876,842 Other financial cost (i) (4,989,702 ) (3,942,459 ) (837,023 ) Total with discontinued operations Ps. (6,997,844 ) Ps. 1,292,878 Ps. (14,250,066 ) (i) Includes discontinued operations of Tracfone (See note 2, Ac)

Segments (Tables)

Segments (Tables)	12 Months Ended
	Dec. 31, 2021
Text block [abstract]
Summary of Operating Segments	Mexico Telmex Brazil Southern Cone Colombia Andean Central U.S.A.(1) Caribbean Europe Eliminations Consolidated As of and for the year ended December 31, 2019 (in Ps.): External revenues 226,164,231 84,173,980 177,596,077 54,230,682 74,274,684 55,440,675 46,602,036 — 34,580,822 98,420,289 — 851,483,476 Intersegment revenues 11,676,015 11,863,364 4,182,248 11,041,705 361,386 92,249 132,061 — 1,136,879 — (40,485,907 ) — Total revenues 237,840,246 96,037,344 181,778,325 65,272,387 74,636,070 55,532,924 46,734,097 — 35,717,701 98,420,289 (40,485,907 ) 851,483,476 Depreciation and amortization 24,742,622 16,346,927 39,424,474 13,847,506 13,439,489 10,256,129 11,045,817 — 6,322,648 24,975,146 (2,881,971 ) 157,518,787 Operating income (loss) 67,694,409 9,731,852 28,846,565 4,007,614 15,324,977 8,023,002 5,712,068 — 5,741,368 8,687,862 (9,971,433 ) 143,798,284 Interest income 23,713,455 1,839,973 3,155,681 896,256 1,306,571 1,283,788 532,046 — 1,478,560 115,359 (28,037,017 ) 6,284,672 Interest expense 30,972,658 1,439,785 19,021,965 3,849,318 2,952,123 2,422,887 1,406,720 — 1,435,862 2,220,168 (27,810,532 ) 37,910,954 Income tax 30,000,511 1,528,229 4,251,116 2,022,336 5,405,452 1,681,159 2,355,380 — 719,774 1,946,255 3,843 49,914,055 Equity interest in net income (loss) of associated companies (3,732 ) 46,789 (1,538 ) (23,424 ) — — (28,795 ) — — (6,909 ) — (17,609 ) Net profit (loss) attributable to equity holders of the parent continues operations 42,598,946 (1,705,068 ) 5,618,095 (6,984 ) 9,571,046 (2,604,646 ) 2,335,963 — 4,312,630 5,051,145 (7,285,126 ) 57,886,001 Net profit (loss) attributable to equity holders of the parent discontinued operations — — — — — — — — — — — 9,844,889 Net profit (loss) attributable to equity holders of the parent 42,598,946 (1,705,068 ) 5,618,095 (6,984 ) 9,571,046 (2,604,646 ) 2,335,963 — 4,312,630 5,051,145 2,559,763 67,730,890 Assets by segment 915,233,048 201,283,526 382,561,753 132,722,497 115,851,227 94,021,632 77,355,732 30,775,893 100,694,650 191,744,924 (710,311,225 ) 1,531,933,657 Plant, property and equipment, net 54,589,459 106,869,482 174,761,167 60,537,650 50,133,642 39,068,450 38,934,747 1,405,755 38,223,641 75,707,738 (888,361 ) 639,343,370 Goodwill 27,396,393 215,381 25,379,805 5,241,305 12,124,685 4,895,331 7,289,748 3,220,105 14,186,723 52,950,325 — 152,899,801 Trademarks, net 46,476 212,324 37,207 — — — — 369,950 227,156 2,595,596 — 3,488,709 Licenses and rights, net 11,087,882 452,504 29,324,718 12,103,980 5,530,422 8,064,487 4,390,547 — 7,942,670 25,951,335 — 104,848,545 Investment in associated companies 3,562,323 610,807 111,073 (7,806 ) 391 — 25,603 — — — (1,828,198 ) 2,474,193 Liabilities by segments 718,354,229 175,774,964 297,877,328 103,330,525 55,576,253 55,463,339 37,993,180 31,557,816 54,276,868 124,319,541 (349,497,251 ) 1,305,026,792 Mexico Telmex Brazil Southern Cone Colombia Andean Central U.S.A. (1) Caribbean Europe Eliminations Consolidated As of and for the year ended December 31, 2020 (in Ps.): External revenues 214,578,600 77,920,910 163,865,421 55,484,744 77,282,658 53,846,358 48,073,436 — 37,182,842 111,472,191 — 839,707,160 Intersegment revenues 17,663,525 13,668,264 4,207,466 1,220,100 352,694 88,305 121,580 — 1,440,983 — (38,762,917 ) — Total revenues 232,242,125 91,589,174 168,072,887 56,704,844 77,635,352 53,934,663 48,195,016 — 38,623,825 111,472,191 (38,762,917 ) 839,707,160 Depreciation and amortization 24,748,756 13,341,479 41,795,397 13,095,004 14,413,760 11,447,356 14,355,899 — 7,094,331 25,593,204 (3,202,788 ) 162,682,398 Operating income (loss) 70,851,525 11,204,433 25,203,504 1,877,079 15,111,947 8,698,645 4,004,501 — 6,701,086 13,159,865 (11,309,206 ) 145,503,379 Interest income 21,322,406 1,479,021 2,904,430 980,581 822,447 1,049,261 1,130,767 — 1,105,420 90,746 (25,823,043 ) 5,062,036 Interest expense 30,936,195 1,306,867 17,976,227 3,334,966 2,586,708 2,223,478 1,559,917 — 1,658,619 2,546,255 (25,467,747 ) 38,661,485 Income tax 4,905,863 577,178 (4,442,598 ) 992,831 2,078,789 3,115,693 1,518,953 — 2,524,214 2,234,065 4,282 13,509,270 Equity interest in net income (loss) of associated companies (3,820 ) 23,955 (2,972 ) (15,422 ) — — — — — (288,747 ) — (287,006 ) Net profit (loss) attributable to equity holders of the parent continues operations 3,613,907 (1,085,038 ) 4,963,424 1,456,062 16,579,303 4,649,047 1,919,558 — 3,294,111 7,777,426 (13,307,820 ) 29,859,980 Net profit (loss) attributable to equity holders of the parent discontinued operations — — — — — — — — — — — 16,992,625 Net profit (loss) attributable to equity holders of the parent 3,613,907 (1,085,038 ) 4,963,424 1,456,062 16,579,303 4,649,047 1,919,558 — 3,294,111 7,777,426 3,684,805 46,852,605 Assets by segment 947,396,510 203,081,314 386,982,711 118,266,380 132,210,369 101,717,708 88,690,683 35,083,285 109,914,293 239,583,759 (737,878,785 ) 1,625,048,227 Plant, property and equipment, net 52,117,395 110,751,083 145,307,497 62,157,797 48,876,853 36,102,261 37,855,227 1,761,595 39,128,447 82,595,077 (876,229 ) 615,777,003 Revalued of assets — — 36,076,207 7,494,408 12,893,284 9,500,708 7,059,247 — 2,572,504 31,556,270 — 107,152,628 Goodwill 26,949,185 215,381 16,048,092 5,436,675 12,253,743 4,866,363 6,345,659 3,362,899 14,186,723 53,388,139 — 143,052,859 Trademarks, net 126,823 181,094 — — — — — 269,325 219,087 2,981,089 — 3,777,418 Licenses and rights, net 12,017,318 100,623 26,171,345 12,099,873 12,363,039 6,870,531 5,427,857 — 8,616,880 27,963,250 — 111,630,716 Investment in associated companies 51,645 613,449 64,125 (20,970 ) 395 — 25,413 — — — 1,095,703 1,829,760 Liabilities by segments 725,408,198 193,840,756 263,989,566 61,786,265 63,610,642 53,379,366 34,252,511 33,141,315 60,839,340 138,747,621 (319,064,971 ) 1,309,930,609 Mexico Telmex Brazil Southern Cone Colombia Andean Central Caribbean Europe Eliminations Consolidated As of and for the year ended December 31, 2021 (in Ps.): External revenues 225,219,719 87,189,642 148,729,232 62,030,033 79,312,071 52,888,323 48,468,386 37,858,979 113,838,486 — 855,534,871 Intersegment revenues 18,041,465 15,237,420 4,044,386 329,000 360,638 73,828 98,530 2,069,648 — (40,254,915 ) — Total revenues 243,261,184 102,427,062 152,773,618 62,359,033 79,672,709 52,962,151 48,566,916 39,928,627 113,838,486 (40,254,915 ) 855,534,871 Depreciation and amortization 25,797,791 12,740,332 40,342,871 14,996,243 15,067,211 11,211,523 11,962,486 6,987,129 27,469,463 (3,948,183 ) 162,626,866 Operating income (loss) 77,783,972 21,100,316 21,867,457 2,144,825 15,165,356 7,457,802 8,216,945 8,661,475 13,421,147 (9,686,654 ) 166,132,641 Interest income 14,864,242 758,126 2,104,574 821,594 431,314 833,540 269,379 701,785 116,031 (17,065,758 ) 3,834,827 Interest expense 24,586,641 1,385,103 15,875,138 2,987,751 2,240,707 1,213,421 1,219,061 1,066,733 2,414,415 (16,963,658 ) 36,025,312 Income tax 25,002,390 2,496,010 (9,603,701 ) (3,795,160 ) 3,112,946 2,375,281 2,945,700 2,171,594 3,438,161 1,548 28,144,769 Equity interest in net income (loss) of associated companies 85,648 44,525 4,575 (19,073 ) — — — — (1,757 ) — 113,918 Net profit (loss) attributable to equity holders of the parent continues operations 34,195,093 4,594,450 14,185,905 415,994 5,959,563 4,180,473 4,099,930 5,151,166 8,313,018 (10,383,143 ) 70,712,449 Net profit (loss) attributable to equity holders of the parent discontinued operations — — — — — — — — — — 121,710,718 Net profit (loss) attributable to equity holders of the parent 34,195,093 4,594,450 14,185,905 415,994 5,959,563 4,180,473 4,099,930 5,151,166 8,313,018 (10,383,143 ) 192,423,167 Assets by segment 999,502,407 195,869,232 407,458,440 135,862,040 133,232,525 95,719,937 101,725,955 102,949,901 210,944,575 (693,615,163 ) 1,689,649,849 Plant, property and equipment, net 50,420,866 118,056,718 153,607,199 64,864,986 48,888,907 34,395,339 42,407,727 41,601,009 79,764,422 (983,169 ) 633,024,004 Revalued of assets — — 33,004,669 6,159,077 10,266,464 8,389,460 9,113,632 2,564,149 28,675,224 — 98,172,675 Goodwill 26,965,618 215,381 15,335,322 5,191,841 11,685,585 4,688,154 6,002,380 14,186,723 52,307,190 — 136,578,194 Trademarks, net 90,673 149,865 — — — — — 229,000 2,822,625 — 3,292,163 Licenses and rights, net 11,081,972 129,233 39,620,009 13,791,003 11,384,533 5,502,139 5,220,437 10,847,685 25,709,849 — 123,286,860 Investment in associated companies 4,725,279 522,403 65,699 (34,401 ) 351 — 26,348 — — (2,253,198 ) 3,052,481 Liabilities by segments 679,954,783 176,177,522 273,655,967 72,702,285 65,631,866 44,676,727 42,823,861 53,885,848 134,357,142 (308,257,878 ) 1,235,608,123

Description of the Business a_2

Description of the Business and Relevant Events - Additional Information (Detail) $ / shares in Units, Subscribers in Millions, Customers in Millions, $ in Millions	Nov. 23, 2021USD ($)$ / sharesshares	Sep. 30, 2021USD ($)CustomersTowersSubscribers	Dec. 31, 2021Country	Sep. 14, 2020
Percentage of shareholding approval of spin off
Corporate information description			América Móvil, S.A.B. de C.V. and subsidiaries (hereinafter, the “Company”, “América Móvil” or “AMX”) was incorporated under laws of Mexico on September 25, 2000. The Company provides telecommunications services in 24 countries throughout Latin America, the United States, the Caribbean and Europe. These telecommunications services include mobile and fixed-line voice services, wireless and fixed data services, internet access and Pay TV, over the top and other related services. The Company also sells equipment, accessories and computers.
Number of countries in which company operates | Country			24
Number of countries in which company holds license | Country			24
Spin Off [Member]
Percentage of shareholding approval of spin off
Percentage of shareholding approval of spin off		98.00%
Number of telecommunications towers transferred under spin off | Towers		36,000
Agreement to Commence Joint Venture [Member] | VTR [Member]
Percentage of shareholding approval of spin off
Number of subcribers | Subscribers		3
Agreement to Commence Joint Venture [Member] | Claro Chile [Member]
Percentage of shareholding approval of spin off
Number of subcribers | Customers		6.5
Agreement to Commence Joint Venture [Member] | VTR and Claro Chile [Member] | Liberty Latin America [Member]
Percentage of shareholding approval of spin off
Proportion of ownership interest in joint venture		50.00%
Agreement to Commence Joint Venture [Member] | VTR and Claro Chile [Member] | Amrica Movil [Member]
Percentage of shareholding approval of spin off
Proportion of ownership interest in joint venture		50.00%
Claro Panama S A [member] | Agreement to Sale Subsidiary [Member]
Percentage of shareholding approval of spin off
Percentage of ownership interest in subsidiary agreed to sell		100.00%
Aggregate consideration receivable on sale of subsidiary		$ 200
Verizon Communications Inc [Member] | Tracfone Wireless Inc Tracfone [member]
Percentage of shareholding approval of spin off
Percentage of ownership interest in subsidiary agreed to sell				100.00%
Verizon Communications Inc [Member] | Tracfone Wireless Inc Tracfone [member] | Discontinued operations [member]
Percentage of shareholding approval of spin off
Proceeds from sale of Subsidiary	$ 3,625.7
Shares received on sale of subsidiary from Counterparty | shares	57,596,544
Share price | $ / shares	$ 51.54
Earntout contingent consideration receivable	$ 650

Basis of Preparation of the C_4

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Additional Information (Detail) $ in Thousands, $ in Millions	Nov. 23, 2021MXN ($)shares	Nov. 23, 2021USD ($)shares	Dec. 31, 2021MXN ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018	Dec. 31, 2021USD ($)	Sep. 14, 2020
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Cumulative index			582.4575
Percentage of annual basis index			50.90%
Closing exchange rate			0.2004	0.2371			0.2004
Cumulative translation (loss) gain			$ (154,388,931)	$ (160,580,917)			$ (7,502)
Impairment losses on goodwill			0	0	$ 0
Borrowing costs capitalised			1,527,259	1,771,613	2,233,358
Impairment losses			0	0	0
Impairment losses on intangibles			$ 0	0	0
Description of estimation of impairment cash-generating unit			In the estimation of impairments, the Company uses the strategic plans established for the separate cash-generating units to which the assets are assigned. Such strategic plans generally cover a period from 3 to 5 years. For longer periods, beginning in the fifth year, projections are based on such strategic plans while applying a constant or declining expected perpetual growth rate.
Percentage of sensitivity analysis for increase in capital expenditures			5.00%
Monthly contributions to pension fund			17.50%
Percentage of employee profit sharing based on individual company taxable income			10.00%
Advertising expenses			$ 12,018,536	11,157,495	$ 13,100,877
Increase (decrease) in interest expense			$ 564,030,102	628,382,956
Concentration risk percentage			10.00%				10.00%
Equity investments at fair value through other comprehensive income (OCI)				$ 4,540,344
Foreign subsidiaries [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Consolidated operating revenues			64.00%	66.00%	65.00%
Percentage of operating revenue as percentage of total assets			70.00%	75.00%
Tracfone Wireless Inc Tracfone [member] | Verizon Communications Inc [Member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Percentage of ownership interest in subsidiary agreed to sell								100.00%
Tracfone Wireless Inc Tracfone [member] | Verizon Communications Inc [Member] | Discontinued operations [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Percentage of ownership interest in subsidiary sold		100.00%
Proceeds from sale of Subsidiary		$ 3,625.7
Cash and cash equivalents in subsidiary or businesses acquired or disposed		$ 500.7
Shares received on sale of subsidiary from Counterparty | shares	57,596,544	57,596,544
Value of Shares received on sale of subsidiary from Counterparty		$ 2,968
Earntout contingent consideration receivable tranche one		500
Earntout contingent consideration receivable tranche two		$ 150
Gains (losses) recognised when control of subsidiary is lost	$ 106,527,287
Interest rate risk [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Increase in basis points			1.00%
Increase in net interest expense			$ (14,606,005)
Increase (decrease) in interest expense			$ (1,188,821)
Currency risk [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Fluctuation in exchange rates			5.00%				5.00%
Increase (decrease) in interest expense			$ 564,030,102
Increase (decrease) through changes in foreign exchange rates, regulatory deferral account credit balances			28,394,119
Increase (decrease) through changes in discount rates, regulatory deferral account credit balances			$ (28,019,972)
Increase/(decrease) in exchange rates			5.00%
Argentina [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Closing exchange rate			0.2004	0.2371			0.2004
Argentina [member] | Impact of application of hyperinflation adjustments in 2018 [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Cumulative inflation percentage						100.00%
U.S.A. [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Closing exchange rate			20.5835	19.9487			20.5835
Cumulative translation adjustment [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Cumulative translation (loss) gain			$ (104,270,295)	$ (100,926,140)
Licenses and rights of use [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Intangibles useful life			Licenses are amortized when the Company does not have a basis to conclude that they are indefinite lived. Licenses are amortized using the straight-line method over a period ranging from 3 to 30 years, which represents the usage period of the assets.
Licenses and rights of use [member] | Bottom of range [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Estimated useful lives			3 years
Licenses and rights of use [member] | Top of range [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Estimated useful lives			30 years
Trademarks [member] | Bottom of range [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Estimated useful lives			1 year
Trademarks [member] | Top of range [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Estimated useful lives			10 years
Customer relationships [member]
Disclosure of basis of preparation of consolidated financial statements and summary of significant accounting policies and practices [line items]
Intangibles useful life			amortized over a 5-year period.
Estimated useful lives			5 years

Basis of Preparation of the C_5

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Summary of Equity Interest in Most Significant Subsidiaries (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Netherlands [member] | America Movil B. V. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Mexico [member] | Sercotel, S.A. de C.V. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Mexico [member] | Radiomovil Dipsa, S.A. de C.V. and subsidiaries (Telcel) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Mexico [member] | Telefonos de Mexico S.A.B. de C.V [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	98.80%	98.80%
Dominican Republic [member] | Compania Dominicana De Telefonos S.A. (Codetel) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Puerto Rico [member] | Puerto Rico Telephone Company Inc [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Honduras [member] | Servicios de Comunicaciones de Honduras, S.A. de C.V.(Sercom Honduras) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
U.S.A. [member] | TracFone Wireless, Inc. (TracFone) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	0.00%	100.00%
Brazil [member] | Claro S.A. (Claro Brasil) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	98.20%	98.20%
Brazil [member] | Nextel Telecomunicaes Ltda [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Guatemala [member] | Telecomunicaciones de Guatemala, S.A. (Telgua) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	99.30%	99.30%
Guatemala [member] | Claro Guatemala S.A [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Nicaragua [member] | Empresa Nicaraguense de Telecomunicaciones, S.A. (Enitel) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	99.60%	99.60%
El Salvador [member] | Compania de Telecomunicaciones de El Salvador, S.A. de C.V. (CTE) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	95.80%	95.80%
Colombia [member] | Comunicacion Celular S. A. (Comcel) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	99.40%	99.40%
Ecuador [member] | Consorcio Ecuatoriano de Telecomunicaciones, S.A. (Conecel) [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Argentina [member] | AMX Argentina, S.A. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Paraguay [member] | AMX Paraguay, S.A. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Uruguay [member] | AM Wireless Uruguay, S.A.[member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Chile [member] | Claro Chile S A [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Peru [member] | America Movil Peru S.A. C. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
Austria [member] | Telekom Austria AG [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	51.00%	51.00%
Luxembourg [member] | NII Brazil Holding SARL [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%
PANAMA | Claro Panama, S.A. [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest	100.00%	100.00%

Basis of Preparation of the C_6

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Summary of Annual Depreciation Rates (Detail)	12 Months Ended
	Dec. 31, 2021
Bottom of range [member] | Network infrastructure [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual depreciation rates	5.00%
Bottom of range [member] | Buildings and leasehold improvements [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual depreciation rates	2.00%
Bottom of range [member] | Other assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual depreciation rates	10.00%
Top of range [member] | Network infrastructure [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual depreciation rates	33.00%
Top of range [member] | Buildings and leasehold improvements [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual depreciation rates	33.00%
Top of range [member] | Other assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Annual depreciation rates	50.00%

Basis of Preparation of the C_7

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Schedule of Estimate Impairment Evaluations (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Brazil [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	41.37%	40.67%
Average margin on CAPEX	22.98%	25.36%
Average pre-tax discount rate (WACC)	4.62%	9.50%
Puerto Rico [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	21.54%	23.06%
Average margin on CAPEX	14.36%	14.57%
Average pre-tax discount rate (WACC)	3.00%	3.53%
Dominican Republic [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	52.02%	47.57%
Average margin on CAPEX	13.86%	13.71%
Average pre-tax discount rate (WACC)	5.84%	8.27%
Mexico [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	36.21%	32.69%
Average margin on CAPEX	15.89%	11.01%
Average pre-tax discount rate (WACC)	6.24%	6.03%
Ecuador [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	44.76%	49.23%
Average margin on CAPEX	12.48%	11.14%
Average pre-tax discount rate (WACC)	14.48%	17.50%
Peru [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	36.63%	38.72%
Average margin on CAPEX	17.19%	15.43%
Average pre-tax discount rate (WACC)	3.99%	4.76%
El Salvador [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	44.82%	45.92%
Average margin on CAPEX	24.25%	21.19%
Average pre-tax discount rate (WACC)	10.78%	14.63%
Chile [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	27.36%	26.34%
Average margin on CAPEX	17.98%	13.18%
Average pre-tax discount rate (WACC)	2.81%	3.37%
Colombia [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	43.36%	43.45%
Average margin on CAPEX	23.18%	18.19%
Average pre-tax discount rate (WACC)	7.18%	6.44%
Bottom of range [member] | Europe [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	31.60%	32.20%
Average margin on CAPEX	7.48%	7.04%
Average pre-tax discount rate (WACC)	2.91%	3.88%
Bottom of range [member] | Other countries [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	30.55%	10.07%
Average margin on CAPEX	4.91%	0.48%
Average pre-tax discount rate (WACC)	4.64%	3.42%
Top of range [member] | Europe [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	45.32%	40.76%
Average margin on CAPEX	24.37%	19.39%
Average pre-tax discount rate (WACC)	9.83%	12.02%
Top of range [member] | Other countries [member]
Disclosure of impairment of assets [line items]
Average margin on EBIDTA	48.52%	47.23%
Average margin on CAPEX	30.03%	31.67%
Average pre-tax discount rate (WACC)	14.39%	21.85%

Basis of Preparation of the C_8

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Summary of Exchange Rates Used for Translation of Foreign Currencies (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of transactions in foreign currency [line items]
Closing exchange rate	0.2004	0.2371
Argentina [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.2137	0.3070	0.4110
Closing exchange rate	0.2004	0.2371
Brazil [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	3.7625	4.1850	4.8907
Closing exchange rate	3.6885	3.8387
Colombia [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.0054	0.0058	0.0059
Closing exchange rate	0.0052	0.0058
Guatemala [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	2.6212	2.7826	2.5023
Closing exchange rate	2.6666	2.5596
U.S.A. [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	20.2769	21.4860	19.2641
Closing exchange rate	20.5835	19.9487
Uruguay [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.4655	0.5110	0.5479
Closing exchange rate	0.4605	0.4712
Nicaragua [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.5765	0.6257	0.5817
Closing exchange rate	0.5795	0.5728
Honduras [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.8384	0.8678	0.7806
Closing exchange rate	0.8396	0.8215
Chile [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.0268	0.0271	0.0275
Closing exchange rate	0.0244	0.0281
Paraguay [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.0030	0.0032	0.0031
Closing exchange rate	0.0030	0.0029
Peru [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	5.2297	6.1483	5.7708
Closing exchange rate	5.1484	5.5046
Dominican Republic [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.3540	0.3766	0.3737
Closing exchange rate	0.3570	0.3416
Costa Rica [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.0325	0.0366	0.0326
Closing exchange rate	0.0319	0.0323
European Union [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	23.9835	24.5080	21.5642
Closing exchange rate	23.4220	24.3693
Bulgaria [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	12.2617	12.5284	11.0257
Closing exchange rate	11.9762	12.4594
Belarus [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	7.9932	8.8172	9.2159
Closing exchange rate	8.0279	7.5721
Croatia [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	3.1852	3.2498	2.9069
Closing exchange rate	3.1161	3.2279
Macedonia [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.3893	0.3975	0.3504
Closing exchange rate	0.3800	0.3950
Serbia [member]
Disclosure of transactions in foreign currency [line items]
Average exchange rate	0.2040	0.2083	0.1830
Closing exchange rate	0.1992	0.2071

Basis of Preparation of the C_9

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Summary of Right-of-use assets are depreciated on a straight-line basis (Detail) - Property, plant and equipment subject to operating leases [member]	12 Months Ended
	Dec. 31, 2021
Towers and sites [member] | Bottom of range [member]
Disclosure of quantitative information about right-of-use assets [line items]
Useful life measured as period of time property, plant and equipment	5 years
Towers and sites [member] | Top of range [member]
Disclosure of quantitative information about right-of-use assets [line items]
Useful life measured as period of time property, plant and equipment	12 years
Property [member] | Bottom of range [member]
Disclosure of quantitative information about right-of-use assets [line items]
Useful life measured as period of time property, plant and equipment	10 years
Property [member] | Top of range [member]
Disclosure of quantitative information about right-of-use assets [line items]
Useful life measured as period of time property, plant and equipment	25 years
Other equipment [member] | Bottom of range [member]
Disclosure of quantitative information about right-of-use assets [line items]
Useful life measured as period of time property, plant and equipment	5 years
Other equipment [member] | Top of range [member]
Disclosure of quantitative information about right-of-use assets [line items]
Useful life measured as period of time property, plant and equipment	15 years

Basis of Preparation of the _10

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - summary of Net profit for the year from discontinued operations (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)		Dec. 31, 2019MXN ($)
Operating revenues:
Service revenues	$ 714,244,392	$ 34,700	$ 708,483,701	[1]	$ 702,961,964	[1]
Sales of equipment	141,290,479	6,864	131,223,459	[1]	148,521,512	[1]
Operating revenues	855,534,871	41,564	839,707,160	[1]	851,483,476	[1]
Total costs and expenses	341,059,662	16,570	334,881,859	[1]	348,776,249	[1]
Operating income	166,132,641	8,070	145,503,379	[1]	143,798,284	[1]
Profit before income tax	102,760,165	4,992	47,543,602	[1]	110,382,620	[1]
Tax expense:
Net profit for the year from discontinued operations	121,710,718	$ 5,913	16,992,625	[1]	9,844,889	[1]
Discontinued operations [member] | Tracfone Wireless Inc Tracfone [member]
Operating revenues:
Service revenues	130,091,540		149,376,532		131,403,268
Sales of equipment	22,160,481		27,802,837		24,461,125
Operating revenues	152,252,021		177,179,369		155,864,393
Total costs and expenses	134,495,316		157,327,836		144,822,141
Operating income	17,756,705		19,851,533		11,042,252
Financial cost	(1,733)		(2,026)		(77,884)
Gain on disposal of discontinued operations	132,821,709		0		0
Profit before income tax	150,576,681		19,849,507		10,964,368
Tax expense:
Related to pre-tax profit from the ordinary activities for the period	2,571,541		2,856,882		1,119,479
Related to gain on disposal from discontinued operations	26,294,422		0		0
Net profit for the year from discontinued operations	$ 121,710,718		$ 16,992,625		$ 9,844,889
[1]	Restated for discontinued operations.

Basis of Preparation of the _11

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Summary of assets and liabilities deconsolidated on the date of the disposal (Detail) $ in Thousands, $ in Millions	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Nov. 23, 2021MXN ($)	Dec. 31, 2020MXN ($)		Dec. 31, 2020USD ($)	Dec. 31, 2019MXN ($)		Dec. 31, 2018MXN ($)
Current assets
Cash	$ 38,679,891	$ 1,879		$ 35,917,907	[1]	$ 1,744	$ 19,745,656	[1]	$ 21,659,962	[1]
Subscribers, distributors, recoverable taxes, contract assets and other, net	202,846,597	9,855		207,977,954
Inventories, net	24,185,310	1,175		30,377,439
Other current assets, net	9,452,252	459		8,993,907
Total current assets	404,156,669	19,634		355,682,893
Non-current assets:
Property, plant and equipment	731,196,679	35,523		722,929,631			639,343,370		$ 640,000,720
Intangibles, net	143,225,764	6,958		133,456,967
Goodwill	136,578,194	6,635		143,052,859			152,899,801
Deferred income taxes	127,287,934	6,184		115,370,240			106,167,897
Other assets, net	39,956,090	1,941		38,415,826
Rights of use	90,372,393	4,391		101,976,844			118,003,223
Total assets	1,689,649,849	82,086		1,625,048,227			1,531,933,657
Short term liability related to rigth of use of assets	27,632,357	1,342		25,067,905
Accounts payable	206,487,681	10,032		186,995,472
Income tax	33,247,318	1,615		14,644,979
Total liabilities	$ 1,235,608,123	$ 60,029		$ 1,309,930,609			$ 1,305,026,792
Discontinued operations [member] | Tracfone Wireless Inc Tracfone [member]
Current assets
Cash			$ 338,439
Subscribers, distributors, recoverable taxes, contract assets and other, net			12,368,407
Inventories, net			9,604,658
Other current assets, net			389,052
Total current assets			22,700,556
Non-current assets:
Property, plant and equipment			1,989,498
Intangibles, net			555,012
Goodwill			2,695,557
Deferred income taxes			1,094,756
Other assets, net			327,546
Rights of use			1,625
Total assets			29,364,550
Short term liability related to rigth of use of assets			1,625
Accounts payable			17,446,513
Income tax			3,267,585
Deferred revenue			13,187,667
Total liabilities			33,903,390
Net assets directly associated with disposal group			$ (4,538,840)
[1]	Restated for discontinued operations.

Equity and debt investments a_2

Equity and debt investments at fair value through OCI and other short/long-term investments - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of equity investments at fair value through other comprehensive income and other short-term investments [line items]
Dividends received	$ 2,628,600	$ 2,122,826	$ 1,773,336
Fair value of long term debt instruments designated as measured at fair value through other comprehensive income	6,894,757	4,540,344
Investments accounted for using equity method Koninklijke KPN [member]
Disclosure of equity investments at fair value through other comprehensive income and other short-term investments [line items]
Other short-term investments	15,026	62,940
Changes in fair value of investment	4,560,869	(1,952,414)
Dividends received	2,628,600	2,119,668	$ 1,742,242
Investments accounted for using equity method in Verizon [Member]
Disclosure of equity investments at fair value through other comprehensive income and other short-term investments [line items]
Equity investment	61,600,578
Equity and other short term investments [member] | Investments accounted for using equity method Koninklijke KPN [member]
Disclosure of equity investments at fair value through other comprehensive income and other short-term investments [line items]
Equity investments at fair value through other comprehensive income (OCI)	$ 56,087,598	$ 50,033,111

Accounts Receivable from Subs_3

Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Summary of Analysis of Accounts Receivable by Component (Detail) $ in Thousands, $ in Millions	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)
Disclosure of accounts receivable [line items]
Contract assets	$ 30,901,277		$ 29,588,104
Impairment of trade receivables	(41,835,826)		(44,551,735)
Trade and other receivables	209,775,485		215,770,817
Non-current subscribers, distributors and contractual assets	6,928,888	$ 337	7,792,863
Total current subscribers, distributors and contractual assets	202,846,597	$ 9,855	207,977,954
Cost [member] | Receivable from subscribers and distributors [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	157,433,609		168,758,386
Cost [member] | Telecommunications carriers for network interconnection and other services [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	3,968,675		4,914,094
Cost [member] | Recoverable taxes [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	43,734,164		44,557,402
Cost [member] | Sundry debtors [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	$ 15,573,586		$ 12,504,566

Accounts Receivable from Subs_4

Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Schedule of Changes in Allowance for Expected Credit Losses (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Subclassifications of assets, liabilities and equities [abstract]
Balance at beginning of year	$ (44,551,735)	$ (39,480,909)	$ (40,798,025)
Increases recorded in expenses	(10,677,421)	(19,112,635)	(16,346,395)
Write-offs	11,682,343	11,953,227	17,839,957
Business combination		(2,066)	(3,265,490)
Translation effect	1,710,987	2,090,648	3,089,044
Balance at end of year	$ (41,835,826)	$ (44,551,735)	$ (39,480,909)

Accounts Receivable from Subs_5

Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Summary of Aging of Accounts Receivable (Detail) - MXN ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Disclosure of accounts receivable [line items]
Trade and other receivables	$ 209,775,485	$ 215,770,817
Receivable from subscribers and distributors [member] | Cost [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	157,433,609	168,758,386
Receivable from subscribers and distributors [member] | 1 - 30 days [member] | Cost [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	35,694,272	37,439,995
Receivable from subscribers and distributors [member] | 31 - 60 days [member] | Cost [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	4,533,604	5,325,264
Receivable from subscribers and distributors [member] | 61 - 90 days [member] | Cost [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	2,645,034	3,313,835
Receivable from subscribers and distributors [member] | Greater than 90 days [member] | Cost [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	45,477,862	46,706,481
Unbilled services provided [member] | Receivable from subscribers and distributors [member] | Cost [member]
Disclosure of accounts receivable [line items]
Trade and other receivables	$ 69,082,837	$ 75,972,811

Accounts Receivable from Subs_6

Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Summary of Accounts Receivable From Subscribers and Distributors Included in Impairments of Trade Receivables (Detail) - Receivable from subscribers and distributors [member] - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of accounts receivable [line items]
Allowance for bad debts	$ 41,835,826	$ 44,551,735
1 - 90 days [member]
Disclosure of accounts receivable [line items]
Allowance for bad debts	4,183,583	4,455,174
Greater than 90 days [member]
Disclosure of accounts receivable [line items]
Allowance for bad debts	$ 37,652,243	$ 40,096,561

Accounts Receivable from Subs_7

Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Summary of Analysis of Contract Assets and Liabilities (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Contract Assets:
Beginning balance	$ 29,588,104	$ 34,274,007
Additions	31,758,626	27,242,031
Disposals	(5,946,487)	(1,397,714)
Amortization	(25,354,712)	(29,002,995)
Translation effect	855,746	(1,527,225)
Ending balance	30,901,277	29,588,104
Non-current contract assets	989,519	817,740
Current portion contracts assets	$ 29,911,758	$ 28,770,364

Related Parties - Summary of An

Related Parties - Summary of Analysis of the Balances with Related Parties (Detail) - MXN ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	$ 1,158,611	$ 1,391,300
Amounts payable to related party transactions	4,216,882	3,999,916
Hubard y Bourlon SA de CV [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	52,026	437,231
Patrimonial Inbursa, SA [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	145,676	327,985
Sears Roebuck de México, S.A. de C.V. and Subsidiaries [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	339,366	233,402
Sanborns Hermanos, SA [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	192,599	160,116
Claroshopcom SAPI de CV [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	40,906	100,075
Amounts payable to related party transactions	247,081	4,300
Carso Infraestructura y Construccion, SA de CV and Subsidiaries [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts payable to related party transactions	1,273,085	2,192,405
Grupo Condumex, SA de CV and Subsidiaries [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	122,555	10,038
Amounts payable to related party transactions	1,709,487	1,054,526
Fianzas Guardiana Inbursa, SA de CV [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts payable to related party transactions	385,287	241,898
Grupo Financiero Inbursa, SAB de CV [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts payable to related party transactions	102,314	234,954
Seguros Inbursa SA de CV [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts payable to related party transactions	113,089	92,173
PC Industrial, SA de CV and Subsidiaries [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts payable to related party transactions	4,761	44,198
Enesa, SA de CV and Subsidiaries [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts payable to related party transactions	9,384	22,014
Other related parties [member]
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts receivable from related party transactions	265,483	122,453
Amounts payable to related party transactions	292,012	113,448
Sociedad Financiera Inbursa, S.A. de C.V.
Disclosure of receivables and payables arising from related party transactions [line items]
Amounts payable to related party transactions	$ 80,382	$ 0

Related Parties - Additional In

Related Parties - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of transactions between related parties [line items]
Impairment of receivables in connection with amounts owed by related parties	$ 0	$ 0	$ 0
Members of the audit and corporate practices committee [member]
Disclosure of transactions between related parties [line items]
compensation paid	5,800
Directors and other key management personnel [member]
Disclosure of transactions between related parties [line items]
compensation paid	$ 85,000

Related Parties - Summary of Tr

Related Parties - Summary of Transactions with Related Parties (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of transactions between related parties [abstract]
Construction services, purchases of materials, inventories and property, plant and equipment	$ 13,544,289	$ 7,130,769	$ 8,573,894
Insurance premiums, fees paid for administrative and operating services, brokerage services and others	4,336,133	4,375,113	4,590,620
Other services	1,617,102	1,101,528	1,277,404
Investments and expenses	19,497,524	12,607,410	14,441,918
Service revenues	714,148	608,248	538,110
Sales of equipment	7,629,181	656,801	944,697
Revenues	$ 8,343,329	$ 1,265,049	$ 1,482,807

Related Parties - Summary of _2

Related Parties - Summary of Transactions with Related Parties (Parenthetical) (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of transactions between related parties [line items]
Materials purchased from subsidiaries	$ 11,447,164	$ 5,312,845	$ 6,809,244
Grupo Carso, SAB de CV [member]
Disclosure of transactions between related parties [line items]
Network maintenance service cost	121,728	203,013	956,132
Associates [member]
Disclosure of transactions between related parties [line items]
Software service expense	50,730	13,490	16,161
Seguros Inbursa SA and Fianzas Guardiana Inbursa, SA [member]
Disclosure of transactions between related parties [line items]
Insurance premium	$ 3,814,995	$ 2,713,370	$ 2,623,795

Derivative Financial Instrume_3

Derivative Financial Instruments - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Changes in fair value of derivative financial instruments gain (loss)	$ (6,755,214)	$ 12,378,193	$ 4,432,023
Derivatives [member] | Debt securities [member]
Disclosure of detailed information about financial instruments [line items]
Weighted-average interest rate	3.10%	3.50%	3.80%

Derivative Financial Instrume_4

Derivative Financial Instruments - Schedule of Derivative Financial Instruments Contracted (Detail) $ in Thousands, € in Millions, ¥ in Millions, £ in Millions, R$ in Millions, $ in Millions	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2021JPY (¥)	Dec. 31, 2021GBP (£)	Dec. 31, 2021BRL (R$)	Dec. 31, 2021EUR (€)	Dec. 31, 2020MXN ($)	Dec. 31, 2020USD ($)	Dec. 31, 2020JPY (¥)	Dec. 31, 2020GBP (£)	Dec. 31, 2020BRL (R$)	Dec. 31, 2020EUR (€)
Disclosure of detailed information about financial instruments [line items]
Fair value, Asset	$ 10,130,806	$ 492					$ 20,928,335
Notional amount, Liabilities | €						€ 2,097						€ 0
Fair value, Liabilities	(10,034,508)						(14,230,249)
Swaps US Dollar-Mexican Peso [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset		1,890						$ 3,490
Fair value, Asset	6,881,934						16,806,937
Swaps Yen-US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | ¥			¥ 6,500						¥ 9,750
Fair value, Asset	119,325						269,215
Notional amount, Liabilities | ¥			¥ 6,500						¥ 3,250
Fair value, Liabilities	(119,313)						(14,802)
Forwards US Dollar-Mexican Peso [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset		2,080						240
Fair value, Asset	321,864						39,607
Notional amount, Liabilities		1,175						3,494
Fair value, Liabilities	(286,937)						(4,052,852)
Forwards Brazilian Real - US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | R$					R$ 2480						R$ 4193
Fair value, Asset	127,131						1,190,292
Notional amount, Liabilities | R$					R$ 4021						R$ 1762
Fair value, Liabilities	(234,822)						(425,249)
Forwards Euro-US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | €						0						915
Fair value, Asset	0						266,639
Notional amount, Liabilities | €						815
Fair value, Liabilities	(1,122,641)
Swaps Dollar- Euro [member]
Disclosure of detailed information about financial instruments [line items]
Fair value, Liabilities	(528,298)
Swaps Pound Sterling-Euro [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | £				£ 640						£ 640
Fair value, Liabilities	(1,924,941)						(3,122,492)
Put option [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | €						374
Fair value, Asset	638,347
Notional amount, Liabilities	0											374
Fair value, Liabilities	0						(1,073,990)
Call option [member]
Disclosure of detailed information about financial instruments [line items]
Fair value, Liabilities	(1,725,495)						0
Swaps US Dollar- Euro [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset		150						150
Fair value, Asset	307,646						117,726
Notional amount, Liabilities		800						$ 800
Fair value, Liabilities	(1,270,005)						(4,811,031)
Swaps Pound Sterling – US Dollar [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset | £				100						1,010
Fair value, Asset	99,463						2,237,919
Notional amount, Liabilities | £				£ 1,460						£ 550
Fair value, Liabilities	(2,117,583)						(457,559)
Forwards US Dollar - Euro [member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities		$ 8
Fair value, Liabilities	(1,570)
Forwards Euro - Mexican Peso [Member]
Disclosure of detailed information about financial instruments [line items]
Fair value, Asset							(272,274)
Notional amount, Liabilities | €						200						€ 200
Fair value, Liabilities	(22,182)
Forwards Mexican Peso - US Dollar [Member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Asset	35,419,000
Fair value, Asset	1,635,087
Swaps Euro US Dollar [Member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities						495	0
Fair value, Liabilities							$ 0
Swaps Euro - Mexican Peso [Member]
Disclosure of detailed information about financial instruments [line items]
Notional amount, Liabilities | €						€ 750
Fair value, Liabilities	$ (680,720)

Derivative Financial Instrume_5

Derivative Financial Instruments - Summary of Maturities of Notional Amount of Derivatives (Detail) € in Millions, ¥ in Millions, £ in Millions, R$ in Millions, $ in Millions, $ in Millions

Dec. 31, 2021USD ($)

Dec. 31, 2021JPY (¥)

Dec. 31, 2021GBP (£)

Dec. 31, 2021MXN ($)

Dec. 31, 2021BRL (R$)

Dec. 31, 2021EUR (€)

Dec. 31, 2020USD ($)

Dec. 31, 2020JPY (¥)

Dec. 31, 2020GBP (£)

Dec. 31, 2020MXN ($)

Dec. 31, 2020BRL (R$)

Dec. 31, 2020EUR (€)

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities | €

€ 2,097

€ 0

Swaps US Dollar-Mexican Peso [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset

$ 1,890

$ 3,490

Swaps Yen-US Dollar [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset | ¥

¥ 6,500

¥ 9,750

Notional amount, Liabilities | ¥

6,500

¥ 3,250

Forwards Brazilian Real - US Dollar [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset | R$

R$ 2480

R$ 4193

Notional amount, Liabilities | R$

4,021

R$ 1762

Forwards Euro-US Dollar [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset | €

0

915

Notional amount, Liabilities | €

815

Swaps Pound Sterling-Euro [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities | £

£ 640

£ 640

Forwards US Dollar-Mexican Peso [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset

2,080

240

Notional amount, Liabilities

1,175

3,494

Put option [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset | €

374

Notional amount, Liabilities

$ 0

374

Swaps US Dollar- Euro [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset

150

150

Notional amount, Liabilities

800

$ 800

Swaps Pound Sterling – US Dollar [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset | £

100

1,010

Notional amount, Liabilities | £

1,460

£ 550

Forwards US Dollar - Euro [Member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities

8

Forwards Euro - Mexican Peso [Member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities | €

200

€ 200

Forwards Mexican Peso - US Dollar [Member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset

35,419

Swaps Euro US Dollar [Member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities

495

$ 0

Swaps Euro - Mexican Peso [Member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities | €

750

2022 | Forwards Brazilian Real - US Dollar [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset | R$

2,480

Notional amount, Liabilities | R$

R$ 4021

2022 | Forwards Euro-US Dollar [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities | €

765

2022 | Forwards US Dollar-Mexican Peso [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset

2,080

Notional amount, Liabilities

1,175

2022 | Forwards US Dollar - Euro [Member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities

8

2022 | Forwards Euro - Mexican Peso [Member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities | €

200

2023 | Swaps US Dollar-Mexican Peso [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset

0

2023 | Put option [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset | €

374

2023 | Forwards Mexican Peso - US Dollar [Member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset

$ 35,419

2023 | Swaps Euro US Dollar [Member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities | €

320

2023 | Swaps Euro - Mexican Peso [Member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities

750

2024 | Forwards Euro-US Dollar [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities | €

50

2024 | Call option

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities | €

2,097

2024 | Swaps Euro US Dollar [Member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities | €

€ 175

2026 Thereafter | Swaps US Dollar-Mexican Peso [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset

1,890

2026 Thereafter | Swaps Yen-US Dollar [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset | ¥

6,500

Notional amount, Liabilities | ¥

¥ 6,500

2026 Thereafter | Swaps Pound Sterling-Euro [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Liabilities | £

640

2026 Thereafter | Swaps US Dollar- Euro [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset

150

Notional amount, Liabilities

$ 800

2026 Thereafter | Swaps Pound Sterling – US Dollar [member]

Disclosure of detailed information about financial instruments [line items]

Notional amount, Asset | £

100

Notional amount, Liabilities | £

£ 1,460

Inventories, Net - Summary of A

Inventories, Net - Summary of Analysis of Inventories (Detail) $ in Thousands, $ in Millions	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)
Classes of current inventories [abstract]
Mobile phones, accessories, computers, TVs, cards and other materials	$ 26,131,521		$ 33,763,086
Less: Reserve for obsolete and slow-moving inventories	(1,946,211)		(3,385,647)
Total	$ 24,185,310	$ 1,175	$ 30,377,439

Inventories, net - Additional I

Inventories, net - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of inventories [abstract]
Cost of inventories recognized in cost of sales	$ 122,220,495	$ 114,711,857	$ 128,559,826

Other Assets, Net - Summary of

Other Assets, Net - Summary of Analysis of Other Assets (Detail) $ in Thousands, $ in Millions		Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)
Current portion:
Advances to suppliers (different from PP&E and inventories)		$ 7,474,932		$ 7,600,644
Prepaid insurance		1,749,589		1,300,019
Other		227,731		93,244
Other current assets		9,452,252	$ 459	8,993,907
Non-current portion:
Recoverable taxes		11,689,094		11,559,961
Prepayments for the use of fiber optics		3,783,496		2,709,358
Judicial Deposits	[1]	14,583,504		15,402,840
Prepaid expenses		9,899,996		8,743,667
Total		$ 39,956,090		$ 38,415,826
[1]	Judicial deposits represent cash and cash equivalents pledged in order to fulfill the collateral requirements for tax contingencies mainly in Brazil. As of December 31, 2020 and 2021, the amount for these deposits is Ps. 15,402,840 and Ps. 14,583,504, respectively for Brazil. Based on its evaluation of the underlying contingencies, the Company believes that such amounts are recoverable.

Other assets, net - Additional

Other assets, net - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other assets [member]
Disclosure of other assets [line items]
Amortization expense for other assets	$ 442,098	$ 213,833	$ 318,824

Other Assets, Net - Summary o_2

Other Assets, Net - Summary of Analysis of Other Assets (Parenthetical) (Detail) - MXN ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Disclosure of Other Assets [line items]
Judicial deposits	[1]	$ 14,583,504	$ 15,402,840
Brazil [member]
Disclosure of Other Assets [line items]
Judicial deposits		$ 14,583,504	$ 15,402,840
[1]	Judicial deposits represent cash and cash equivalents pledged in order to fulfill the collateral requirements for tax contingencies mainly in Brazil. As of December 31, 2020 and 2021, the amount for these deposits is Ps. 15,402,840 and Ps. 14,583,504, respectively for Brazil. Based on its evaluation of the underlying contingencies, the Company believes that such amounts are recoverable.

Property, Plant and Equipment_3

Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment, Net (Detail) $ in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2021MXN ($)		Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)		Dec. 31, 2019MXN ($)
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance		$ 722,929,631			$ 639,343,370		$ 640,000,720
Additions		231,539,820			198,788,458		238,821,559
Retirements		(92,643,640)	[1]		(106,489,087)		(112,234,066)
Business combinations		0			1,053,921		10,919,581
Revaluation adjustments					107,152,628
Transfers		(1,966,088)
Effect of translation of foreign subsidiaries		(16,000,632)			(1,598,974)		(23,371,038)
Depreciation of the year		112,662,412			115,320,685		114,793,386
Ending balance		731,196,679		$ 35,523	722,929,631		639,343,370
Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance		1,355,800,837			1,319,587,687		1,285,672,457
Additions		231,539,820			198,788,458		238,821,559
Retirements		(127,800,314)	[2]		(143,373,691)		(138,455,063)
Business combinations		0			1,053,921		10,919,581
Revaluation adjustments					107,152,628
Transfers		(1,000,104)			(62,050,212)
Effect of translation of foreign subsidiaries		(49,542,949)			(65,357,954)		(77,370,847)
Ending balance		1,408,997,290			1,355,800,837		1,319,587,687
Cost [member] | Network in operation in operation and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance		1,057,592,243			990,673,603		969,195,936
Additions		89,696,150			90,387,449		82,992,062
Retirements		(45,044,049)	[2]		(19,574,391)		(13,417,360)
Business combinations		0			996,974		9,572,805
Revaluation adjustments					107,152,628
Transfers		53,531,590			(62,050,212)
Effect of translation of foreign subsidiaries		(44,061,097)			(49,993,808)		(57,669,840)
Ending balance		1,111,714,837			1,057,592,243		990,673,603
Cost [member] | Land and buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance		48,887,578			50,801,253		57,130,326
Additions		784,460			570,062		1,530,677
Retirements		(473,785)	[2]		(2,853,037)		(4,025,222)
Business combinations							115,935
Transfers		38,250
Effect of translation of foreign subsidiaries		(1,216,894)			369,300		(3,950,463)
Ending balance		48,019,609			48,887,578		50,801,253
Cost [member] | Other assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance		157,022,845			162,340,564		149,809,137
Additions		10,782,903			17,474,218		26,881,611
Retirements		(11,994,756)	[2]		(14,454,598)		(7,594,735)
Business combinations		0			55,848		1,021,051
Transfers		(1,800,756)
Effect of translation of foreign subsidiaries		(1,870,104)			(8,393,187)		(7,776,500)
Ending balance		152,140,132			157,022,845		162,340,564
Cost [member] | Construction in process and advances plant suppliers [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	[3]	67,501,913			81,539,174		81,092,529
Additions	[3]	83,366,813			59,635,316		82,640,305
Retirements		(47,178,796)	[2]		(68,661,847)	[3]	(76,892,011)	[3]
Business combinations	[3]	0			1,099		209,790
Transfers	[3]	(38,944,421)
Effect of translation of foreign subsidiaries	[3]	(1,420,843)			(5,011,829)		(5,511,439)
Ending balance	[3]	63,324,666			67,501,913		81,539,174
Cost [member] | Spare parts for operation of the network [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance		24,796,258			34,233,093		28,444,529
Additions		46,909,494			30,721,413		44,776,904
Retirements		(23,108,928)	[2]		(37,829,818)		(36,525,735)
Business combinations							0
Transfers		(13,824,767)
Effect of translation of foreign subsidiaries		(974,011)			(2,328,430)		(2,462,605)
Ending balance		33,798,046			24,796,258		34,233,093
Accumulated depreciation [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance		632,871,206			680,244,317		645,671,737
Retirements		(35,156,674)	[2]		(36,884,604)		(26,220,997)
Transfers		(965,984)			(62,050,212)
Effect of translation of foreign subsidiaries		(33,542,317)			(63,758,980)		(53,999,809)
Depreciation of the year		112,662,412			115,320,685		114,793,386
Ending balance		677,800,611			632,871,206		680,244,317
Accumulated depreciation [member] | Network in operation in operation and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance		531,267,306			580,370,101		560,005,547
Retirements		(24,322,904)	[2]		(25,726,856)		(24,954,514)
Transfers		638,066			(62,050,212)	[4]
Effect of translation of foreign subsidiaries		(30,254,288)			(58,055,450)		(47,778,627)
Depreciation of the year		97,343,878			96,729,723		93,097,695
Ending balance		574,672,058			531,267,306		580,370,101
Accumulated depreciation [member] | Other assets [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance		92,444,017			90,332,191		76,533,494
Retirements		(10,522,319)	[2]		(9,317,821)		(695,425)
Transfers		549,855
Effect of translation of foreign subsidiaries		(2,522,458)			(5,120,175)		(4,754,982)
Depreciation of the year		13,310,584			16,549,822		19,249,104
Ending balance		93,259,679			92,444,017		90,332,191
Accumulated depreciation [member] | Spare parts for operation of the network [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance		72,484			74,717		321,747
Retirements		(92,421)	[2]		(176,131)		(283,986)
Effect of translation of foreign subsidiaries		(26,823)			38,898		(79,226)
Depreciation of the year		66,131			135,000		116,182
Ending balance		19,371			72,484		74,717
Accumulated depreciation [member] | Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance		9,087,399			9,467,308		8,810,949
Retirements		(219,030)	[2]		(1,663,796)		(287,072)
Transfers		(221,937)
Effect of translation of foreign subsidiaries		(738,748)			(622,253)		(1,386,974)
Depreciation of the year		1,941,819			1,906,140		2,330,405
Ending balance		$ 9,849,503			$ 9,087,399		$ 9,467,308
[1]	Includes disposals related to the sale of TracFone. See Note 2Ac.
[2]	Includes disposals related to the sale of TracFone. See Note 2, Ac).
[3]	Construction in progress includes fixed and mobile network facilities as well as satellite developments and fiber optic which is in the process of being installed.
[4]	This transfer relates to the accumulated depreciation as at the revaluation date that was eliminated against the gross carrying amount of the revalued asset.

Property, Plant and Equipment_4

Property, Plant and Equipment, net - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [line items]
Fair value gain on revaluation Of telecommunications towers net of depreciation effect Impact	$ 6,450,825
Telecommunications Towers [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Net income from the revaluation of the telecommunications towers	$ 98,172,675	$ 107,152,628

Property, Plant and Equipment_5

Property, Plant and Equipment, net - Summary of fair value measurement for the revalued telecommunications towers (Detail) - Telecommunication towers [member] - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of fair value measurement of assets [line items]
Book value as of December 31, (cost model)	$ 633,024,004	$ 615,777,003
Supplement for change in accounting policy	98,172,675	107,152,628
Book value and fair value as of December 31, (revaluation model)	$ 731,196,679	$ 722,929,631

Property, Plant and Equipment_6

Property, Plant and Equipment, Net - Schedule of Relevant Information Related to Computation of Capitalized Borrowing Costs (Detail) - MXN ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]
Amount invested in the acquisition of qualifying assets	$ 38,573,605		$ 46,528,232	$ 50,783,957
Capitalized interest		$ 1,527,259	$ 1,771,613	2,233,358
Capitalization rate		3.78%	3.72%
Property, plant and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Capitalized interest		$ 1,527,259	$ 1,771,613	$ 2,233,358
Capitalization rate		4.00%	3.80%	4.40%

Intangible Assets, Net and Go_3

Intangible Assets, Net and Goodwill - Summary of Analysis of Intangible Assets (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Licenses and rights of use [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	$ 118,481,097		$ 111,432,979		$ 103,298,395
Acquisitions	24,406,905		15,079,714		13,206,877
Acquisitions in business combinations			4,436,313		7,844,339
Disposals and other	2,336,382		1,608,873		4,894,490
Amortization of the year	(14,682,451)		(14,274,497)		(11,577,160)
Effect of translation of foreign subsidiaries	(274,188)		197,715		(6,233,962)
Balance at end of year	130,267,745		118,481,097		111,432,979
Licenses and rights of use [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	253,090,161		246,100,862		233,478,974
Acquisitions	24,406,905		15,079,714		13,206,877
Acquisitions in business combinations			4,436,313		7,844,339
Disposals and other	(4,427,685)		1,502,981		7,286,114
Effect of translation of foreign subsidiaries	(7,011,691)		(14,029,709)		(15,715,442)
Balance at end of year	266,057,690		253,090,161		246,100,862
Licenses and rights of use [member] | Accumulated depreciation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	(134,609,064)		(134,667,883)		(130,180,579)
Disposals and other	6,764,067		105,892		(2,391,624)
Amortization of the year	(14,682,451)		(14,274,497)		(11,577,160)
Effect of translation of foreign subsidiaries	6,737,503		14,227,424		9,481,480
Balance at end of year	(135,789,945)		(134,609,064)		(134,667,883)
Trademarks [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	3,777,418		3,488,709		4,667,205
Acquisitions	75,100		162,309		53,467
Acquisitions in business combinations			12,110
Disposals and other	(326,949)		(276)		(6,012)
Amortization of the year	(140,205)		(300,727)		(1,008,483)
Effect of translation of foreign subsidiaries	(93,201)		415,293		(217,468)
Balance at end of year	3,292,163		3,777,418		3,488,709
Trademarks [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	29,132,365	[1]	27,419,008		28,207,166
Acquisitions	75,100	[1]	162,309		53,467
Acquisitions in business combinations			12,110
Disposals and other	(1,129,666)	[1]	4,000		(6,012)
Effect of translation of foreign subsidiaries	(401,946)	[1]	1,534,938		(835,613)
Balance at end of year	27,675,853	[1]	29,132,365	[1]	27,419,008
Trademarks [member] | Accumulated depreciation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	(25,354,947)		(23,930,299)		(23,539,961)
Acquisitions					0
Disposals and other	802,717		(4,276)		0
Amortization of the year	(140,205)		(300,727)		(1,008,483)
Effect of translation of foreign subsidiaries	308,745		(1,119,645)		618,145
Balance at end of year	(24,383,690)		(25,354,947)		(23,930,299)
Customer relationships [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	4,153,661		3,099,381		6,781,531
Acquisitions	229,936		1,935		20,248
Acquisitions in business combinations			2,689,718
Disposals and other	(302,666)		(4,908)		5,507
Amortization of the year	(707,500)		(1,654,237)		(3,371,924)
Effect of translation of foreign subsidiaries	(12,267)		21,772		(335,981)
Balance at end of year	3,361,164		4,153,661		3,099,381
Customer relationships [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	29,579,266	[1]	22,875,011		25,543,068
Acquisitions	229,936	[1]	1,935		20,248
Acquisitions in business combinations			2,689,718
Disposals and other	(4,133,408)	[1]	(5,763)		5,507
Effect of translation of foreign subsidiaries	(1,105,668)	[1]	4,018,365		(2,693,812)
Balance at end of year	24,570,126	[1]	29,579,266	[1]	22,875,011
Customer relationships [member] | Accumulated depreciation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	(25,425,605)		(19,775,630)		(18,761,537)
Acquisitions					0
Disposals and other	3,830,742		855		0
Amortization of the year	(707,500)		(1,654,237)		(3,371,924)
Effect of translation of foreign subsidiaries	1,093,401		(3,996,593)		2,357,831
Balance at end of year	(21,208,962)		(25,425,605)		(19,775,630)
Software licenses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	5,067,698		5,103,367		6,604,455
Acquisitions	2,659,704		2,445,784		2,729,480
Acquisitions in business combinations			36
Disposals and other	(2,315)		(471,812)		(949,859)
Amortization of the year	(2,738,978)		(2,667,870)		(2,479,088)
Effect of translation of foreign subsidiaries	(172,647)		658,193		(801,621)
Balance at end of year	4,813,462		5,067,698		5,103,367
Software licenses [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	17,301,146		13,104,110		14,309,258
Acquisitions	2,660,330		2,445,784		2,729,480
Acquisitions in business combinations			36
Disposals and other	(3,484,755)		(2,485,429)		(949,858)
Amortization of the year					0
Effect of translation of foreign subsidiaries	(1,225,585)		4,236,645		(2,984,770)
Balance at end of year	15,251,136		17,301,146		13,104,110
Software licenses [member] | Accumulated depreciation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	(12,233,448)		(8,000,743)		(7,704,803)
Acquisitions	626				0
Disposals and other	3,482,440		2,013,617		(1)
Amortization of the year	(2,738,978)		(2,667,870)		(2,479,088)
Effect of translation of foreign subsidiaries	1,052,938		(3,578,452)		2,183,149
Balance at end of year	(10,437,674)		(12,233,448)		(8,000,743)
Content rights [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	1,977,093		2,044,953		786,117
Acquisitions	818,436		1,570,415		1,427,694
Disposals and other	(429,415)		(313,942)		1,629,287
Amortization of the year	(899,666)		(1,440,749)		(1,772,779)
Effect of translation of foreign subsidiaries	24,782		116,416		(25,366)
Balance at end of year	1,491,230		1,977,093		2,044,953
Content rights [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	12,036,312		10,160,182		7,549,709
Acquisitions	818,436		1,570,415		1,427,694
Disposals and other	(281,747)		(313,942)		1,638,007
Effect of translation of foreign subsidiaries	429,319		619,657		(455,228)
Balance at end of year	13,002,320		12,036,312		10,160,182
Content rights [member] | Accumulated depreciation [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	(10,059,219)		(8,115,229)		(6,763,592)
Disposals and other	(147,668)				(8,720)
Amortization of the year	(899,666)		(1,440,749)		(1,772,779)
Effect of translation of foreign subsidiaries	(404,537)		(503,241)		429,862
Balance at end of year	(11,511,090)		(10,059,219)		(8,115,229)
Intangibles, net [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	133,456,967		125,169,389		122,137,703
Acquisitions	28,190,081		19,260,157		17,437,766
Acquisitions in business combinations			7,138,177		7,844,339
Disposals and other	1,275,037		817,935		5,573,413
Amortization of the year	(19,168,800)		(20,338,080)		(20,209,434)
Effect of translation of foreign subsidiaries	(527,521)		1,409,389		(7,614,398)
Balance at end of year	143,225,764		133,456,967		125,169,389
Goodwill [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Balance at beginning of year	143,052,859	[1]	152,899,801		145,566,497
Acquisitions in business combinations			(7,014,120)		10,869,571
Disposals and other	(3,516,287)	[1]	(537,343)		(843,005)
Effect of translation of foreign subsidiaries	(2,958,378)	[1]	(2,295,479)		(2,693,262)
Balance at end of year	$ 136,578,194	[1]	$ 143,052,859	[1]	$ 152,899,801
[1]	Includes disposals related to the sale of TracFone. See Note 2, Ac).

Intangible Assets, Net and Go_4

Intangible Assets, Net and Goodwill - Summary of Aggregate Carrying Amount of Goodwill (Detail) $ in Thousands, $ in Millions	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)
Disclosure of carrying value of goodwill [line items]
Goodwill	$ 136,578,194	$ 6,635	$ 143,052,859	$ 152,899,801
Europe [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	52,307,190		53,388,139
Brazil [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	18,017,916		18,730,686
Puerto Rico [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	17,463,394		17,463,394
Dominican Republic [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	14,186,723		14,186,723
Mexico [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	10,164,814		10,148,380
Ecuador [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	2,155,384		2,155,384
Peru [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	2,532,770		2,710,979
El Salvador [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	2,510,595		2,499,544
Chile [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	2,311,239		2,558,098
Colombia [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	11,685,585		12,253,743
Other countries [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	1,295,381		1,293,356
United States (Tracfone) [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	0		3,362,900
Guatemala [member]
Disclosure of carrying value of goodwill [line items]
Goodwill	$ 1,947,203		$ 2,301,533

Intangible Assets, Net and Go_5

Intangible Assets, Net and Goodwill - Additional Information (Detail) $ in Thousands, $ in Thousands, € in Millions

1 Months Ended

12 Months Ended

Nov. 30, 2021MXN ($)

Feb. 28, 2021MXN ($)

Feb. 29, 2020MXN ($)Band

Feb. 29, 2020USD ($)Band

Jan. 31, 2020MXN ($)

Dec. 31, 2019MXN ($)

Dec. 31, 2019COP ($)

Jan. 31, 2019MXN ($)

Dec. 31, 2021MXN ($)

Dec. 31, 2020MXN ($)

Dec. 31, 2020EUR (€)

Dec. 31, 2019MXN ($)

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 1,752,128

Acquisitions 2019 [Member]

Disclosure of intangible assets and goodwill [line items]

Amortization of intangible assets

$ 20,209,434

Acquisitions 2020 [Member]

Disclosure of intangible assets and goodwill [line items]

Amortization of intangible assets

$ 20,338,080

Acquisitions 2021 [Member]

Disclosure of intangible assets and goodwill [line items]

Amortization of intangible assets

19,168,800

IFETEL [Member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 459,668

Estimated useful life of intangible assets

20 years

Submarine Cable [Member]

Disclosure of intangible assets and goodwill [line items]

Estimated useful life of intangible assets

10 years

FiveG Licence [Member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 2,008,503

Licence Expiration Year

2041 years

Renewal of license [member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 3,457,251

Other licenses [member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

706,900

Twenty Twenty Business Acquisition [Member]

Disclosure of intangible assets and goodwill [line items]

Number of brands | Band

2,500

2,500

Claro Brazil [Member] | FiveG Licence [Member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 17,789,163

30 Mhz spectrum [member] | Twenty Twenty Business Acquisition [Member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 9,246,825

$ 30

Estimated useful life of intangible assets

20 years

20 years

400 MHZ [Member] | Renewal of license [member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 1,649,525

400 MHZ [Member] | Twenty Twenty Business Acquisition [Member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

1,806,875

Comcel [Member] | Renewal of license [member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 2,753,768

$ (468,511,573,375)

Estimated useful life of intangible assets

20 years

20 years

Puerto Rico Argentina Guatemala Panam And Others Countries [Member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 1,862,934

Puerto Rico Argentina Guatemala Panam And Others Countries [Member] | Twenty Twenty Business Acquisition [Member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

1,701,682

CTE [Member] | Twenty Twenty Business Acquisition [Member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 620,052

Number Of Pair of Frequencies

12 months

Austria [member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

3,023,732

Austria [member] | 3.5 GHz [Member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license | €

€ 64.3

Belarus [member] | 2.1 GHz [Member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license | €

9.5

Croatia [member] | 2.1 GHz [Member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license | €

€ 7.2

Slovenia [member] | Twenty Twenty Business Acquisition [Member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 1,704,280

El Salvador [member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 139,363

Estimated useful life of intangible assets

20 years

Colombia [member] | Renewal of license [member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 1,599,473

Colombia [member] | Top of range [member] | Renewal of license [member]

Disclosure of intangible assets and goodwill [line items]

Licence Expiration Year

3 years

Colombia [member] | Bottom of range [member] | Renewal of license [member]

Disclosure of intangible assets and goodwill [line items]

Licence Expiration Year

2 years

Chile [member]

Disclosure of intangible assets and goodwill [line items]

Amount paid for license

$ 411,375

Estimated useful life of intangible assets

10 years

Business Combinations, Acquis_3

Business Combinations, Acquisitions and Non-controlling Interest - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2021MXN ($)	Dec. 31, 2020MXN ($)
Disclosure of detailed information about business combination [line items]
Percentage of voting equity interests acquired		80.00%
Other Entities [member]
Disclosure of detailed information about business combination [line items]
Net of cash paid			$ 152,896,000
Additional non-controlling interest acquired		$ 7,720,000	1,104,662,000
Claro [Member] | Twenty Twenty Business Acquisition [Member]
Disclosure of detailed information about business combination [line items]
Consideration transferred, acquisition-date fair value			$ 16,500
Percentage of voting equity interests acquired			32.00%
Proportion of voting rights held in subsidiary	22.00%
Number Of Mobile Access Sites	$ 4,700

Business Combinations, Acquis_4

Business Combinations, Acquisitions and Non-controlling Interest - Summary of Selected Financial Data From Consolidated Statements of Financial Position (Detail) $ in Thousands, $ in Millions	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018MXN ($)
Assets:
Current assets	$ 404,156,669	$ 19,634	$ 355,682,893
Total assets	1,689,649,849	82,086	1,625,048,227	$ 1,531,933,657
Liabilities and equity:
Current liabilities	534,012,766	25,944	507,310,678
Non-current liabilities	701,595,357	34,085	802,619,931
Total liabilities	1,235,608,123	60,029	1,309,930,609	$ 1,305,026,792
Equity attributable to equity holders of the parent	389,634,927	18,928	250,478,803
Non-controlling interest	64,406,799	3,129	64,638,815
Total equity	454,041,726	22,057	315,117,618		$ 245,872,422
Total liabilities and equity	1,689,649,849	$ 82,086	1,625,048,227
Subsidiaries with material non-controlling interests [member]
Assets:
Current assets	39,781,192		32,775,046
Non-current assets	142,407,870		150,747,947
Total assets	182,189,062		183,522,993
Liabilities and equity:
Current liabilities	68,795,807		49,942,415
Non-current liabilities	58,312,238		82,293,652
Total liabilities	127,108,045		132,236,067
Equity attributable to equity holders of the parent	28,066,198		26,129,649
Non-controlling interest	27,014,819		25,157,277
Total equity	55,081,017		51,286,926
Total liabilities and equity	$ 182,189,062		$ 183,522,993

Business Combinations, Acquis_5

Business Combinations, Acquisitions and Non-controlling Interest - Summary of Consolidated Statements of Comprehensive Income (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)		Dec. 31, 2019MXN ($)
Disclosure of detailed information about business combination [line items]
Operating costs and expenses	$ 689,402,230	$ 33,494	$ 694,203,781	[1]	$ 707,685,192	[1]
Operating income	166,132,641	8,070	145,503,379	[1]	143,798,284	[1]
Net income	196,326,114	9,538	51,026,957	[1]	70,313,454	[1]
Total comprehensive income	204,185,563	9,920	104,489,719	[1]	6,124,939	[1]
Distribution of the net profit (loss) to:
Equity holders of the parent	192,423,167		46,852,605		67,730,890
Non-controllinginterest	3,902,947	190	4,174,352	[1]	2,582,564	[1]
Net income	196,326,114	9,538	51,026,957	[1]	70,313,454	[1]
Comprehensive income (loss) for the year attributable to:
Non-controllinginterest	1,767,061	86	18,339,601	[1]	674,260	[1]
Total comprehensive income (loss) for the year	204,185,563	$ 9,920	104,489,719	[1]	6,124,939	[1]
Subsidiaries with material non-controlling interests [member]
Disclosure of detailed information about business combination [line items]
Operating revenues	113,838,487		111,472,191		98,420,289
Operating costs and expenses	98,346,896		98,312,325		89,732,428
Operating income	15,491,591		13,159,866		8,687,861
Net income	9,104,962		7,787,388		5,051,145
Total comprehensive income	7,790,499		12,103,406		1,466,783
Distribution of the net profit (loss) to:
Equity holders of the parent	4,629,816		3,986,412		2,565,733
Non-controllinginterest	4,475,146		3,800,976		2,485,412
Net income	9,104,962		7,787,388		5,051,145
Comprehensive income (loss) for the year attributable to:
Equity holders of the parent	3,973,154		6,172,737		748,059
Non-controllinginterest	3,817,345		5,930,669		718,724
Total comprehensive income (loss) for the year	$ 7,790,499		$ 12,103,406		$ 1,466,783
[1]	Restated for discontinued operations.

Income Taxes - Summary of Compo

Income Taxes - Summary of Composition of Income Tax Expense (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)		Dec. 31, 2019MXN ($)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Income tax expense	$ 28,144,769	$ 1,367	$ 13,509,270	[1]	$ 49,914,055	[1]
Mexico [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Current year income tax	24,355,240		13,407,948		26,295,431
Deferred income tax	(5,079,397)		(9,334,246)		208,658
Income Tax attributable to a discontinued operation	(26,294,422)		0		0
Foreign [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Current year income tax	23,412,990		12,319,690		19,830,227
Deferred income tax	(14,544,064)		(2,884,122)		3,579,739
Income Tax attributable to a discontinued operation	$ (2,571,541)		$ (2,856,882)		$ (1,119,479)
[1]	Restated for discontinued operations.

Income Taxes - Summary of Defer

Income Taxes - Summary of Deferred Tax Related to Items Recognized in OCI (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Major components of tax expense (income) [abstract]
Remeasurement of defined benefit plans	$ (4,760,089)	$ 4,151,600	$ 9,217,320
Equity investments at fair value	583,892	(665,814)	(378,606)
Other	0	(35,670)	0
Revaluation assets	0	(29,922,597)
Deferred tax benefit recognized in OCI	$ (4,176,197)	$ (26,472,481)	$ 8,838,714

Income Taxes - Summary of Recon

Income Taxes - Summary of Reconciliation of Statutory Income Tax Rate in Mexico to Consolidated Effective Income Tax Rate Recognized (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Statutory income tax rate in Mexico	30.00%	30.00%	30.00%
Impact of non-deductibleand non-taxable items:
Tax inflation effects	7.90%	8.60%	3.80%
Derivatives	(0.90%)	(1.00%)	(0.10%)
Employee benefits	2.60%	4.20%	2.00%
Other	(2.90%)	(3.40%)	2.00%
Dividends received from associates Equity	(0.70%)	(1.30%)	(0.50%)
Foreign subsidiaries and other non-deductible items, net	2.20%	4.50%	8.00%
Effective tax rate from continuing operations	27.40%	28.40%	45.20%
Effective tax rate from discontinued operation	19.20%	14.40%	10.20%
Mexico [member]
Impact of non-deductibleand non-taxable items:
Effective tax rate	36.70%	38.40%	37.70%
Brazil [member]
Impact of non-deductibleand non-taxable items:
Tax recoveries in Brazil	(10.80%)	(13.20%)

Income Taxes - Summary of Analy

Income Taxes - Summary of Analysis of Temporary Differences Giving Rise to Net Deferred Tax Liability (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	$ 77,822,839	$ 66,303,077	$ 88,074,856	$ 86,613,327
Deferred tax expense in net profit for the year	19,623,461	12,218,368	(3,788,397)
Deferred tax discontinued operations	143,482	73,646	(105,986)
Provisions [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	18,038,607	19,312,081
Deferred tax expense in net profit for the year	2,324,227	3,887,471	318,843
Deferred revenues [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	9,041,137	6,748,101
Deferred tax expense in net profit for the year	2,202,413	897,762	(1,077,259)
Tax losses carry forward [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	33,954,926	25,121,933
Deferred tax expense in net profit for the year	10,352,978	2,236,244	(9,873)
Property, plant and equipment [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	(33,445,815)	(39,459,549)
Deferred tax expense in net profit for the year	9,246,429	3,990,750	(1,067,307)
Inventories [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	135,658	(537,404)
Deferred tax expense in net profit for the year	814,626	(2,394,485)	(55,380)
Licenses and rights of use [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	(3,668,389)	(5,177,924)
Deferred tax expense in net profit for the year	(151,013)	344,729	432,403
Employee benefits [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	40,246,031	45,467,827
Deferred tax expense in net profit for the year	(354,803)	422,473	(1,019,042)
Other [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	13,520,684	14,828,012
Deferred tax expense in net profit for the year	$ (4,811,396)	$ 2,833,424	$ (1,310,782)

Income Taxes - Summary of Rec_2

Income Taxes - Summary of Reconciliation of Deferred Tax Assets and Liabilities, Net (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021MXN ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2021USD ($)
Reconciliation of changes in deferred tax liability (asset) [abstract]
Deferred Tax (Liability) Asset Beginning Balance	$ 66,303,077	$ 88,074,856	$ 86,613,327
Deferred tax benefit	19,623,461	12,292,014	(3,894,383)
Translation effect	(727,099)	375,105	2,047,915
Deferred tax benefit recognized in OCI	(4,176,197)	(26,472,481)	8,838,714
Deferred taxes acquired in business combinations	0	(2,580,552)	(276,568)
Hyperinflationary effect in Argentina	(3,540,962)	(5,385,865)	(5,254,149)
Deferred tax (liability) asset ending balance	77,822,839	66,303,077	88,074,856
Presented in the consolidated statements of financial position as follows:
Deferred income tax assets	127,287,934	115,370,240	106,167,897	$ 6,184
Deferred income tax liabilities	(49,465,095)	(49,067,163)	(18,093,041)	$ (2,403)
Deferred tax assets and liabilities, net	77,822,839	$ 66,303,077	$ 88,074,856
Disposals see to 2Ac	(1,203,203)
Related discontinued operation	$ 1,543,762

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) € in Thousands, ₨ in Thousands, R$ in Thousands, $ in Thousands	Dec. 31, 2021MXN ($)	Dec. 31, 2021INR (₨)	Dec. 31, 2021MXN ($)	Dec. 31, 2021BRL (R$)	Dec. 31, 2021EUR (€)	Dec. 31, 2020MXN ($)	Dec. 31, 2020BRL (R$)	Dec. 31, 2019MXN ($)	Dec. 31, 2019BRL (R$)	Dec. 31, 2018MXN ($)	Dec. 31, 2018BRL (R$)	Nov. 23, 2021
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Effective income tax rate for foreign jurisdiction			14.20%	14.20%	14.20%	15.00%	15.00%	38.00%	38.00%
Percentage of share with voting right	80.00%		80.00%
Accounting profit			$ 1,431,164	R$ 380373		$ 1,721,453	R$ 411336	$ 2,748,084	R$ 656646	$ 2,748,084	R$ 656646
Adjustments For Deferred Tax Of Prior Periods	$ 2,647,919	₨ 703,761
Excess On Deferred Income Tax	2,076,594	551,915
Excess On Current Income Tax	571,325	₨ 151,846
Discontinued operations [member] | Tracfone Wireless Inc Tracfone [member] | Verizon Communications Inc [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Percentage of ownership interest in subsidiary sold												100.00%
Tax Profit On Sale of Subsidiary			93,968,555
Brazil [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net operating loss carryforwards			$ 71,910,653
Effective taxable income percentage carryforward			30.00%	30.00%	30.00%
Mexico [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Accumulated tax loss			$ 14,768,325
Chile [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Accumulated tax loss			$ 16,109,194
Euros [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Effective taxable income percentage carryforward			75.00%	75.00%	75.00%
Accumulated tax loss | €					€ 2,031,465
Bottom of range [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Statutory tax rates			10.00%	10.00%	10.00%
Top of range [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Statutory tax rates			34.00%	34.00%	34.00%
CUCA [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Contributed capital account	612,351,412		$ 612,351,412			573,362,949
CUFIN [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Contributed capital account	$ 431,249,107		$ 431,249,107			$ 332,273,039

Income Taxes - Available Tax Lo

Income Taxes - Available Tax Loss Carryforwards Recorded in Deferred Tax Assets (Detail) $ in Thousands	Dec. 31, 2021MXN ($)
Disclosure of tax losses available for carryforward [line items]
Gross balance of available tax loss carryforwards at December 31, 2020	$ 105,608,071
Tax-effected loss carryforward benefit	33,954,926
Brazil [member]
Disclosure of tax losses available for carryforward [line items]
Gross balance of available tax loss carryforwards at December 31, 2020	71,910,653
Tax-effected loss carryforward benefit	24,449,622
Mexico [member]
Disclosure of tax losses available for carryforward [line items]
Gross balance of available tax loss carryforwards at December 31, 2020	14,768,325
Tax-effected loss carryforward benefit	4,430,497
United States [Member]
Disclosure of tax losses available for carryforward [line items]
Gross balance of available tax loss carryforwards at December 31, 2020	432,301
Tax-effected loss carryforward benefit	112,398
Peru [member]
Disclosure of tax losses available for carryforward [line items]
Gross balance of available tax loss carryforwards at December 31, 2020	356,133
Tax-effected loss carryforward benefit	105,060
Chile [member]
Disclosure of tax losses available for carryforward [line items]
Gross balance of available tax loss carryforwards at December 31, 2020	16,109,194
Tax-effected loss carryforward benefit	4,349,483
Europe [Member]
Disclosure of tax losses available for carryforward [line items]
Gross balance of available tax loss carryforwards at December 31, 2020	2,031,465
Tax-effected loss carryforward benefit	$ 507,866

Debt - Summary of Short- and Lo

Debt - Summary of Short- and Long-Term Debt (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021MXN ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2021USD ($)
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 564,030,102	$ 628,382,956
Less: Short-term debt and current portion of long-term debt	145,222,672	148,083,184	$ 7,055
Long-term debt	$ 418,807,430	480,299,772	$ 20,347
Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity	2073
Borrowings	$ 12,882,081	$ 13,403,133
Euro Nc10 series B capital securities interest rate 6.375% maturing 2073 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity		2073
Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	18,818
Less: Short-term debt and current portion of long-term debt	84,856,270	$ 53,062,260
Finance Lease [member]
Disclosure of detailed information about borrowings [line items]
Less: Short-term debt and current portion of long-term debt	13,350	13,910
Line of credit and others [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	84,904,014	53,119,526
U.S. dollars [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 159,533,549	$ 186,531,417
U.S. dollars [member] | Fixed-rate Senior notes interest rate 3.125% maturing 2022 [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	3.125%	3.125%	3.125%
Borrowings maturity		2022
Borrowings		$ 31,917,920
U.S. dollars [member] | Fixed-rate Senior notes interest rate 3.625% maturing 2029 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	3.625%	3.625%	3.625%
Borrowings maturity	2029	2029
Borrowings	$ 20,583,500	$ 19,948,700
U.S. dollars [member] | Fixed-rate Senior notes interest rate 6.375% maturing 2035 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	6.375%	6.375%	6.375%
Borrowings maturity	2035	2035
Borrowings	$ 20,199,206	$ 19,576,258
U.S. dollars [member] | Fixed-rate Senior notes interest rate 6.125% maturing 2037 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	6.125%	6.125%	6.125%
Borrowings maturity	2037	2037
Borrowings	$ 7,599,943	$ 7,365,559
U.S. dollars [member] | Fixed-rate Senior notes interest rate 6.125% maturing 2040 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	6.125%	6.125%	6.125%
Borrowings maturity	2040	2040
Borrowings	$ 41,167,000	$ 39,897,400
U.S. dollars [member] | Fixed Rate Senior Notes Interest Rate 4.375% Maturing 2042 [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	4.375%	4.375%	4.375%
Borrowings maturity	2042	2042
Borrowings	$ 23,671,025	$ 22,941,005
U.S. dollars [member] | Fixed-rate Senior notes interest rate 4.375% maturing 2049 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	4.375%	4.375%	4.375%
Borrowings maturity	2049	2049
Borrowings	$ 25,729,375	$ 24,935,875
U.S. dollars [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity	2022
Borrowings	$ 14,723,980
U.S. dollars [member] | Fixed-rate Senior notes interest rate 2.875% maturing 2030
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	2.875%	2.875%	2.875%
U.S. dollars [member] | Fixed Rate Senior Notes Interest Rate 2.875% Maturing 2030
Disclosure of detailed information about borrowings [line items]
Borrowings maturity	2030	2030
Borrowings	$ 20,583,500	$ 19,948,700
U.S. dollars [member] | Bottom of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	0.35%		0.35%
U.S. dollars [member] | Top of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	0.70%		0.70%
Mexican pesos [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 51,656,585	$ 51,282,881
Mexican pesos [member] | Fixed Rate Senior Notes Interest Rate 6.450% Maturing 2022 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	6.45%	6.45%	6.45%
Borrowings maturity	2022	2022
Borrowings	$ 22,500,000	$ 22,500,000
Mexican pesos [member] | Fixed Rate Senior Notes Interest Rate 7.125% Maturing 2024 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	7.125%	7.125%	7.125%
Borrowings maturity	2024	2024
Borrowings	$ 11,000,000	$ 11,000,000
Mexican pesos [member] | Domestic Senior Notes Interest Rate 0.000% Maturing 2025 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	0.00%	0.00%	0.00%
Borrowings maturity	2025	2025
Borrowings	$ 5,284,885	$ 4,911,181
Mexican pesos [member] | Fixed Rate Senior Notes Interest Rate 8.460% Maturing 2036 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	8.46%	8.46%	8.46%
Borrowings maturity	2036	2036
Borrowings	$ 7,871,700	$ 7,871,700
Mexican pesos [member] | Domestic Senior Notes Interest Rate 8.360% Maturing 2037 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	8.36%	8.36%	8.36%
Borrowings maturity	2037	2037
Borrowings	$ 5,000,000	$ 5,000,000
Mexican pesos [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity	2022	2021
Borrowings	$ 34,080,000	$ 27,100,000
Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	167,396,781	224,928,934
Euros [member] | Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 12,882,081	$ 13,403,133
Euros [member] | Fixed rate senior notes interest rate 3.000% maturing 2021 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		3.00%
Borrowings maturity		2021
Borrowings		$ 24,369,332
Euros [member] | Fixed rate senior notes interest rate 3.125% maturing 2021 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		3.125%
Borrowings maturity		2021
Borrowings		$ 18,276,999
Euros [member] | Fixed rate senior notes interest rate 4.000% maturing 2022 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	4.00%	4.00%	4.00%
Borrowings maturity	2022	2022
Borrowings	$ 17,566,473	$ 18,276,999
Euros [member] | Fixed rate senior notes interest rate 4.750% maturing 2022 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	4.75%	4.75%	4.75%
Borrowings maturity		2022
Borrowings		$ 18,276,999
Euros [member] | Fixed rate senior notes interest rate 3.500% maturing 2023 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	3.50%	3.50%	3.50%
Borrowings maturity	2023	2023
Borrowings	$ 7,026,589	$ 7,310,800
Euros [member] | Fixed rate senior notes interest rate 3.259% maturing 2023 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	3.259%	3.259%	3.259%
Borrowings maturity	2023	2023
Borrowings	$ 17,566,474	$ 18,276,999
Euros [member] | Fixed rate senior notes interest rate 1.500% maturing 2024 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	1.50%	1.50%	1.50%
Borrowings maturity	2024	2024
Borrowings	$ 19,908,670	$ 20,713,932
Euros [member] | Fixed rate senior notes interest rate 1.500% maturing 2026 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	1.50%	1.50%	1.50%
Borrowings maturity	2026	2026
Borrowings	$ 17,566,473	$ 18,276,999
Euros [member] | Fixed rate senior notes interest rate 0.750% maturing 2027 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	0.75%	0.75%	0.75%
Borrowings maturity	2027	2027
Borrowings	$ 23,421,965	$ 24,369,332
Euros [member] | Fixed rate senior notes interest rate 2.125% maturing 2028 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	2.125%	2.125%	2.125%
Borrowings maturity	2028	2028
Borrowings	$ 15,224,277	$ 15,840,066
Euros [member] | Euro Nc10 series B capital securities interest rate 6.375% maturing 2073 [member] | Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	6.375%	6.375%	6.375%
Borrowings maturity	2073
Borrowings	$ 12,882,081	$ 13,403,133
Euros [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity	2022
Borrowings	$ 18,737,572
Euros [member] | Commercial Paper Interest Rate (0.23%)-(0.310%) Maturing 2021
Disclosure of detailed information about borrowings [line items]
Borrowings maturity		2021
Borrowings		$ 40,940,477
Euros [member] | Exchangable Bonds Interest Rate 0.000% Maturing 2024
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	0.00%		0.00%
Borrowings maturity	2024
Borrowings	$ 49,115,860
Euros [member] | Bottom of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	0.40%		0.40%
Euros [member] | Bottom of range [member] | Commercial Paper Four Interest Rate -0.230% - -0.310% maturing 2021
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		(0.23%)
Euros [member] | Top of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	0.45%		0.45%
Euros [member] | Top of range [member] | Commercial Paper Four Interest Rate -0.230% - -0.310% maturing 2021
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate		(0.31%)
Pound sterling [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 61,268,846	$ 59,993,720
Pound sterling [member] | Fixed rate senior notes interest rate 5.000% maturing 2026 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	5.00%	5.00%	5.00%
Borrowings maturity	2026	2026
Borrowings	$ 13,924,738	$ 13,634,936
Pound sterling [member] | Fixed rate senior notes interest rate 5.750% maturing 2030 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	5.75%	5.75%	5.75%
Borrowings maturity	2030	2030
Borrowings	$ 18,102,159	$ 17,725,417
Pound sterling [member] | Fixed rate senior notes interest rate 4.948% maturing 2033 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	4.948%	4.948%	4.948%
Borrowings maturity	2033	2033
Borrowings	$ 8,354,843	$ 8,180,962
Pound sterling [member] | Fixed rate senior notes interest rate 4.375% maturing 2041 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	4.375%	4.375%	4.375%
Borrowings maturity	2041	2041
Borrowings	$ 20,887,106	$ 20,452,405
Brazilian reais [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 20,286,578	$ 32,533,191
Brazilian reais [member] | Debenture 104.000% of CDI maturing 2021 [member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis		104.000% of CDI
Borrowings maturity		2021
Borrowings		$ 4,222,597
Brazilian reais [member] | Debenture 104.250% of CDI maturing 2021 [member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis		104.250% of CDI
Borrowings maturity		2021
Borrowings		$ 5,815,668
Brazilian reais [member] | Promissory Note CDI + 0.600% maturing 2021 [Member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis		CDI + 0.600%
Borrowings maturity		2021
Adjustment of interbank certificate of deposit	0.60%
Borrowings		$ 1,381,941
Brazilian reais [member] | Promissory Note 106.000% of CDI maturing 2022 [member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis	106.000% of CDI	106.000% of CDI
Borrowings maturity	2022
Borrowings	$ 7,376,937	$ 7,677,449
Brazilian reais [member] | Promissory Note 106.500% of CDI maturing 2022 [member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis	106.500% of CDI
Brazilian reais [member] | Debenture 106.500% of CDI maturing 2022 [member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis		106.500% of CDI
Borrowings maturity	2022	2022
Borrowings	$ 3,688,469	$ 3,838,725
Brazilian reais [member] | Debenture CDI + 0.960% maturing 2022 [member]
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis	CDI + 0.960%
Borrowings maturity	2022	2022
Adjustment of interbank certificate of deposit	0.96%
Borrowings	$ 9,221,172	$ 9,596,811
Brazilian reais [member] | Debenture CDI + 0.960% Maturing 2021
Disclosure of detailed information about borrowings [line items]
Interbank certificate of deposit interest rate basis		CDI + 0.960%
Borrowings maturity		2022
Japanese yen [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 2,325,617	$ 2,511,701
Japanese yen [member] | Fixed rate senior notes interest rate 2.950% maturing 2039 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	2.95%	2.95%	2.95%
Borrowings maturity	2039	2039
Borrowings	$ 2,325,617	$ 2,511,701
Chilean pesos [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 3,776,051	$ 4,078,453
Chilean pesos [member] | Fixed rate senior notes interest rate 3.961% maturing 2035 [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	3.961%	3.961%	3.961%
Borrowings maturity	2035	2035
Borrowings	$ 3,776,051	$ 4,078,453
Chilean pesos [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity	2022	2021
Borrowings	$ 7,419,372	$ 8,868,181
Chilean pesos [member] | Finance Lease [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 47,743	$ 57,266
Chilean pesos [member] | Bottom of range [member] | Finance Lease [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	8.70%	8.70%	8.70%
Borrowings maturity	2022	2021
Chilean pesos [member] | Top of range [member] | Finance Lease [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	8.97%	8.97%	8.97%
Borrowings maturity	2027	2027
Other currencies [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 6,101,668	$ 6,590,154
Less: Short-term debt and current portion of long-term debt	145,222,672
Long-term debt	$ 418,807,430
Other currencies [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	15.79%		15.79%
Borrowings maturity	2022
Borrowings	$ 80,279
Peruvian Soles [Member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings maturity	2022	2021
Borrowings	$ 9,815,068	$ 17,094,079
Peruvian Soles [Member] | Bottom of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	0.976%	1.20%	0.976%
Peruvian Soles [Member] | Top of range [member] | Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	1.045%	1.45%	1.045%

Debt - Additional Information (

Debt - Additional Information (Detail) $ in Thousands, € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021MXN ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2021EUR (€)
Disclosure of detailed information about borrowings [line items]
Weighted average cost of borrowed funds	3.78%	3.72%
Line of credit	$ 145,222,672	$ 148,083,184	$ 7,055
Borrowings	564,030,102	628,382,956
Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	167,396,781	224,928,934
U.S. dollars [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 159,533,549	186,531,417
Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings, maturity	2073
Borrowings	$ 12,882,081	13,403,133
Hybrid Notes [member] | Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 12,882,081	13,403,133
Revolving Syndicated Credit Facility One [member]
Disclosure of detailed information about borrowings [line items]
Loan amount			1,500
Borrowings, maturity	2026
Revolving Syndicated Credit Facility Two [member]
Disclosure of detailed information about borrowings [line items]
Loan amount			$ 2,500
Borrowings, maturity	2024
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 | €				€ 550
Capital securities beginning redemption period	2023
Series Two Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Borrowings interest rate	6.375%		6.375%	6.375%
Hybrid Notes [member]
Disclosure of detailed information about borrowings [line items]
Percentage of leverage for equity credit	50.00%
Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Line of credit	$ 84,856,270	$ 53,062,260
Borrowings	$ 18,818
Lines of credit [member] | Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings, maturity	2022
Borrowings	$ 18,737,572
Lines of credit [member] | U.S. dollars [member]
Disclosure of detailed information about borrowings [line items]
Borrowings, maturity	2022
Borrowings	$ 14,723,980
Fixed-rate Senior notes interest rate 3.125% maturing 2022 [Member] | U.S. dollars [member]
Disclosure of detailed information about borrowings [line items]
Borrowings, maturity		2022
Borrowings interest rate	3.125%	3.125%	3.125%	3.125%
Borrowings redeemed in advance	$ 1,600,000
Borrowings		$ 31,917,920
Fixed rate senior notes interest rate 4.750% maturing 2022 [member] | Euros [member]
Disclosure of detailed information about borrowings [line items]
Borrowings, maturity		2022
Borrowings interest rate	4.75%	4.75%	4.75%	4.75%
Borrowings redeemed in advance	$ 750,000
Borrowings		$ 18,276,999
Mexico [member]
Disclosure of detailed information about borrowings [line items]
Commissions or the reimbursements for Mexican tax withholdings	4.90%

Debt - Summary of Short Term De

Debt - Summary of Short Term Debt Maturities (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021MXN ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2021USD ($)
Disclosure of detailed information about borrowings [line items]
Short-term debt	$ 145,222,672	$ 148,083,184	$ 7,055
Weighted average interest rate	4.02%	2.23%
Senior Notes 1 [member] | Obligations and senior notes [member]
Disclosure of detailed information about borrowings [line items]
Short-term debt	$ 60,353,052	$ 95,007,014
Lines of credit [member]
Disclosure of detailed information about borrowings [line items]
Short-term debt	84,856,270	53,062,260
Finance Lease [member]
Disclosure of detailed information about borrowings [line items]
Short-term debt	$ 13,350	$ 13,910

Debt - Summary of Long Term Deb

Debt - Summary of Long Term Debt Maturities (Detail) $ in Thousands, $ in Millions	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)
Disclosure of detailed information about borrowings [line items]
Long-term debt	$ 418,807,430	$ 20,347	$ 480,299,772
2023
Disclosure of detailed information about borrowings [line items]
Long-term debt	24,599,324
2024
Disclosure of detailed information about borrowings [line items]
Long-term debt	80,031,350
2025
Disclosure of detailed information about borrowings [line items]
Long-term debt	5,292,314
2026 and thereafter
Disclosure of detailed information about borrowings [line items]
Long-term debt	$ 308,884,442

Debt - Summary of Senior Notes

Debt - Summary of Senior Notes Outstanding (Detail) - MXN ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	$ 564,030,102	$ 628,382,956
U.S. dollars [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	159,533,549	186,531,417
Mexican pesos [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	51,656,585	51,282,881
Euros [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	167,396,781	224,928,934
Pound sterling [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	61,268,846	59,993,720
Japanese yen [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	2,325,617	2,511,701
Brazilian reais [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	20,286,578	32,533,191
Chilean pesos [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	3,776,051	4,078,453
Senior Notes 1 [member] | U.S. dollars [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	159,533,549	186,531,417
Senior Notes 1 [member] | Mexican pesos [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	51,656,585	51,282,881
Senior Notes 1 [member] | Euros [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	167,396,781	183,988,456
Senior Notes 1 [member] | Pound sterling [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	61,268,846	59,993,720
Senior Notes 1 [member] | Japanese yen [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	2,325,617	2,511,701
Senior Notes 1 [member] | Brazilian reais [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	20,286,578	32,533,191
Senior Notes 1 [member] | Chilean pesos [member]
Disclosure of Senior Notes Outstanding [Line Items]
Borrowings	$ 3,776,051	$ 4,078,453

Right-of-use assets and lease_3

Right-of-use assets and lease debt - Schedule of detailed information about right-of-use assets and lease liabilities (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)		Dec. 31, 2019MXN ($)
Disclosure Right of use Assets and Lease liabilities [Line Items]
As of January 1	$ 101,976,844		$ 118,003,223
As of January 1	101,976,844		118,003,223		$ 120,078,302
Additions and release	4,680,419		7,569,964		8,015,051
Business Combinations					9,668,507
Modifications	12,968,719		6,572,362		9,492,280
Depreciation	(26,551,232)		(28,371,085)		(23,593,566)
Translation adjustment	(2,702,357)		(1,797,620)		(5,657,351)
Balance at December 31	90,372,393	$ 4,391	101,976,844		118,003,223
Interest expense	7,301,216		9,134,288		7,940,240
Payments	(30,544,750)	$ (1,484)	(29,623,565)	[1]	(26,765,075)	[1]
Balance at December 31	98,654,225
Towers and sites [member]
Disclosure Right of use Assets and Lease liabilities [Line Items]
As of January 1	85,218,875		96,102,449		94,252,098
Additions and release	3,145,941		5,745,869		6,364,508
Business Combinations					9,668,507
Modifications	10,945,985		8,559,335		7,474,469
Depreciation	(20,699,207)		(22,064,413)		(17,286,497)
Translation adjustment	(2,054,566)		(3,124,365)		(4,370,636)
Balance at December 31	76,557,028		85,218,875		96,102,449
Property [member]
Disclosure Right of use Assets and Lease liabilities [Line Items]
As of January 1	12,205,435		17,439,370		21,075,884
Additions and release	482,456		309,576		921,542
Modifications	1,024,573		(3,035,831)		1,288,974
Depreciation	(3,221,499)		(3,440,428)		(4,941,222)
Translation adjustment	(554,260)		932,748		(905,808)
Balance at December 31	9,936,705		12,205,435		17,439,370
Office equipment [member]
Disclosure Right of use Assets and Lease liabilities [Line Items]
As of January 1	4,552,534		4,461,404		4,750,320
Additions and release	1,052,022		1,514,519		729,001
Modifications	998,161		1,048,858		728,837
Depreciation	(2,630,526)		(2,866,244)		(1,365,847)
Translation adjustment	(93,531)		393,997		(380,907)
Balance at December 31	3,878,660		4,552,534		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	109,327,241		120,596,733		119,387,660
Additions and release	3,060,042		4,833,959		7,437,621
Business Combinations					10,810,111
Modifications	12,535,394		7,769,326		8,363,045
Interest expense	7,301,216		9,134,288		7,940,240
Payments	(30,544,750)		(29,623,565)		(26,765,075)
Translation adjustment	(3,024,918)		(3,383,500)		(6,576,869)
Balance at December 31	$ 98,654,225		$ 109,327,241		$ 120,596,733
[1]	Restated for discontinued operations.

Right-of-use assets and lease_4

Right-of-use assets and lease debt - Additional Information (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)	Dec. 31, 2019MXN ($)
Statement [line items]
Right of use assets	$ 90,372,393	$ 4,391	$ 101,976,844	$ 118,003,223
Lease liabilities	98,654,225
Amendment of IFRS 16 [Member]
Statement [line items]
Adjustment to accrued lease liability	59,104
Related Party [Member]
Statement [line items]
Right of use assets	14,785,012		18,499,851
Lease liabilities	$ 16,212,629		$ 20,016,478

Right-of-use assets and lease_5

Right-of-use assets and lease debt - Summary of Long Term Debt Maturities (Detail) $ in Thousands, $ in Millions	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)
Disclosure of detailed information about borrowings [line items]
Long-term debt	$ 71,021,868	$ 3,450	$ 84,259,336
2023
Disclosure of detailed information about borrowings [line items]
Long-term debt	13,370,533
2024
Disclosure of detailed information about borrowings [line items]
Long-term debt	22,664,124
2025
Disclosure of detailed information about borrowings [line items]
Long-term debt	10,342,707
2026 and Thereafter [member]
Disclosure of detailed information about borrowings [line items]
Long-term debt	$ 24,644,504

Right-of-use assets and lease_6

Right-of-use assets and lease debt - Schedule of maturity of lease liabilities (Detail) $ in Thousands, $ in Millions	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)
Disclosure of maturity analysis of operating lease payments [line items]
Short term	$ 27,632,357	$ 1,342	$ 25,067,905
Long term	71,021,868	$ 3,450	$ 84,259,336
Total	$ 98,654,225

Right-of-use assets and lease_7

Right-of-use assets and lease debt - Summary of lease cost recognized expenses (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement [line items]
Depreciation expense of right-of-use assets	$ 26,551,232	$ 28,371,085	$ 23,593,566
Interest expense on lease liabilities	7,301,216	9,134,288	7,940,240
Expense relating to short-term leases	29,833	32,238	1,980,361
Expense relating to leases of low-value assets	685	2,883	25,935
Variable lease payments	68,236	78,494	1,299,502
Total	33,951,202	37,618,988	34,839,604
Other [Member]
Statement [line items]
Depreciation expense of right-of-use assets	19,932,316	22,404,924	18,176,521
Interest expense on lease liabilities	6,212,774	7,081,693	5,654,721
Expense relating to short-term leases	29,833	32,238	1,978,403
Expense relating to leases of low-value assets	685	2,883	25,935
Variable lease payments	68,236	78,494	1,299,502
Total	26,243,844	29,600,232	27,135,082
Related Party [Member]
Statement [line items]
Depreciation expense of right-of-use assets	6,618,916	5,966,161	5,417,045
Interest expense on lease liabilities	1,088,442	2,052,595	2,285,519
Expense relating to short-term leases			1,958
Total	$ 7,707,358	$ 8,018,756	$ 7,704,522

Accounts Payable, Accrued Lia_3

Accounts Payable, Accrued Liabilities and Asset Retirement Obligations - Components Account Payable and Accrued Liabilities (Detail) $ in Thousands, $ in Millions	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)
Accounts payable and accrued liabilities [abstract]
Suppliers	$ 87,942,106		$ 74,285,881
Sundry creditors	107,111,390		101,406,307
Interest payable	6,827,225		7,661,762
Guarantee deposits from customers	1,577,424		1,386,645
Dividends payable	3,029,536		2,254,877
Total	$ 206,487,681	$ 10,032	$ 186,995,472

Accounts Payable, Accrued Lia_4

Accounts Payable, Accrued Liabilities and Asset Retirement Obligations - Summary of Balance of Accrued Liabilities (Detail) $ in Thousands, $ in Millions	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)
Current liabilities
Direct employee benefits payable	$ 20,052,946		$ 18,965,160
Contingencies	34,338,518		31,326,691
Total	$ 54,391,464	$ 2,642	$ 50,291,851

Accounts Payable, Accrued Lia_5

Accounts Payable, Accrued Liabilities and Asset Retirement Obligations - Summary of Movements in Contingent Liabilities (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of contingent liabilities [abstract]
Beginning balance	$ 31,326,691	$ 34,379,969
Business combination	0	292
Effect of translation	1,556,950	(4,290,753)
Increase of the year	7,425,182	7,442,292
Applications payments	(4,079,190)	(3,214,407)
Applications reversals	(1,891,115)	(2,990,702)
Ending balance	$ 34,338,518	$ 31,326,691

Accounts Payable, Accrued Lia_6

Accounts Payable, Accrued Liabilities and Asset Retirement Obligations - Summary of Movements in Asset Retirement Obligations (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of asset retirement obligations [abstract]
Beginning balance	$ 17,887,991	$ 15,816,744
Business combination	0	0
Effect of translation	(910,181)	374,418
Increase of the year	1,273,201	2,412,908
Applications payments	(148,634)	(593,644)
Applications reversals	(1,350,154)	(122,435)
Ending balance	$ 16,752,223	$ 17,887,991

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) R$ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021MXN ($)	Dec. 31, 2021BRL (R$)	Dec. 31, 2018MXN ($)	Dec. 31, 2021BRL (R$)
Disclosure of commitments and contingencies [line items]
Fine imposed on sanction procedure initiated by triggered breach			$ 2,543,937
Monetary correction in a total amount of regulatory matters	$ 24,620,529	R$ 6675000
Value Added Tax [Member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	46,016,079			R$ 12475659
Provision for taxes [member] | Value Added Tax [Member]
Disclosure of commitments and contingencies [line items]
Provision	3,297,735			894,066
Provision for taxes [member] | Social Contribution [Member]
Disclosure of commitments and contingencies [line items]
Provision	3,228,656			875,338
Provision for taxes [member] | Social Integration Program [Member]
Disclosure of commitments and contingencies [line items]
Provision	5,116,747			1,387,228
Provision for taxes [member] | Allegedly Improper Exclusion [Member]
Disclosure of commitments and contingencies [line items]
Provision	1,396,376			378,579
Provision for taxes [member] | Contribute To The Promotion Of Public Radio Broadcasting [Member]
Disclosure of commitments and contingencies [line items]
Provision	3,762,522			1,020,077
Provision for taxes [member] | Telecommunications Technology Development Fund [Member]
Disclosure of commitments and contingencies [line items]
Provision	387			105
Provision for taxes [member] | Services Tax [Member]
Disclosure of commitments and contingencies [line items]
Provision	48,964			13,275
Provision for taxes [member] | IRRF And Cide Taxes And Remittances To Foreign Operators [Member]
Disclosure of commitments and contingencies [line items]
Provision	$ 120,856			32,766
Agencia Nacional de telecomunicacoes [member]
Disclosure of commitments and contingencies [line items]
Inflation-related adjustments applicable to percentage of concessions price	60.00%	60.00%
Related matters [member] | Provision for taxes [member]
Disclosure of commitments and contingencies [line items]
Provision	$ 17,915,605			4,857,193
Tax contingent liability [member] | Social Contribution [Member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	18,360,489			4,977,808
Tax contingent liability [member] | Social Integration Program [Member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	16,245,325			4,404,355
Tax contingent liability [member] | Allegedly Improper Exclusion [Member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	11,684,785			3,167,923
Tax contingent liability [member] | Contribute To The Promotion Of Public Radio Broadcasting [Member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	4,213,972			1,142,472
Tax contingent liability [member] | Telecommunications Technology Development Fund [Member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	4,778,186			1,295,439
Tax contingent liability [member] | Services Tax [Member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	1,847,959			501,010
Tax contingent liability [member] | IRRF And Cide Taxes And Remittances To Foreign Operators [Member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	4,143,670			1,123,412
Tax contingent liability [member] | Related matters [member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	131,140,527			35,554,192
Contingent liabilities [member] | TFI [member]
Disclosure of commitments and contingencies [line items]
Tax contingencies amount	18,118,080			4,912,087
Provision for Monetary correction in a total amount of regulatory matters [member]
Disclosure of commitments and contingencies [line items]
Provision	$ 4,577,389			R$ 1241000

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Purchase Commitments (Detail) - Wireless carriers [member] - Purchase commitment for purchase of airtime minutes at current market prices [member] $ in Thousands	Dec. 31, 2021MXN ($)
Disclosure of commitments [line items]
Purchase commitments	$ 34,010,127
2022[member]
Disclosure of commitments [line items]
Purchase commitments	7,770,936
2023 [member]
Disclosure of commitments [line items]
Purchase commitments	3,469,647
2024 [member]
Disclosure of commitments [line items]
Purchase commitments	2,808,660
2025 and thereafter [member]
Disclosure of commitments [line items]
Purchase commitments	$ 19,960,884

Employee Benefits - Analysis of

Employee Benefits - Analysis of Net Liability and Net Period Cost for Employee Benefit (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	$ 142,850,465	$ 168,230,202
Net period cost (benefit)
Net period cost (benefit)	18,688,374	18,085,954	$ 16,609,565
Mexico [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	110,225,654	129,260,355
Net period cost (benefit)
Net period cost (benefit)	15,507,652	14,911,208	12,788,464
Puerto Rico [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	12,502,377	14,924,874
Net period cost (benefit)
Net period cost (benefit)	548,550	664,046	747,755
Europe [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	13,127,228	14,392,445
Net period cost (benefit)
Net period cost (benefit)	1,753,872	1,701,424	2,526,957
Brazil [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	6,108,744	8,913,548
Net period cost (benefit)
Net period cost (benefit)	724,587	722,412	511,964
Ecuador [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	601,239	488,161
Net period cost (benefit)
Net period cost (benefit)	111,353	67,402	34,425
El Salvador [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	177,922	154,422
Net period cost (benefit)
Net period cost (benefit)	19,081	15,751	0
Nicaragua [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	75,084	61,337
Net period cost (benefit)
Net period cost (benefit)	18,561	3,711	0
Honduras [member]
Disclosure of net defined benefit liability (asset) [line items]
Liabilities	32,217	35,060
Net period cost (benefit)
Net period cost (benefit)	$ 4,718	$ 0	$ 0

Employee Benefits - Summary of

Employee Benefits - Summary of Defined Benefit Obligation (DBO) and Plan Assets for Pension and Other Benefit Obligation Plans (Detail) - MXN ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	$ (131,410,989)	$ (154,847,297)	$ (140,696,974)	$ (108,118,868)
Reportable segments [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	131,174,685	154,578,357
Reportable segments [member] | Mexico [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	109,125,922	128,343,821
Reportable segments [member] | Puerto Rico [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	12,502,377	14,924,874
Reportable segments [member] | Brazil [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	4,453,350	5,818,789
Reportable segments [member] | Europe [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	5,093,036	5,490,873
Defined benefit obligation [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	(345,315,712)	(343,003,240)	(342,569,774)	(306,702,447)
Defined benefit obligation [member] | Reportable segments [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	345,079,408	342,734,300
Defined benefit obligation [member] | Reportable segments [member] | Mexico [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	286,396,483	278,434,302
Defined benefit obligation [member] | Reportable segments [member] | Puerto Rico [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	38,092,662	40,240,193
Defined benefit obligation [member] | Reportable segments [member] | Brazil [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	15,497,227	18,568,932
Defined benefit obligation [member] | Reportable segments [member] | Europe [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	5,093,036	5,490,873
Plan assets [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	218,327,182	191,549,583	206,300,821	203,671,122
Plan assets [member] | Reportable segments [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	(218,327,182)	(191,549,583)
Plan assets [member] | Reportable segments [member] | Mexico [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	(177,270,561)	(150,090,481)
Plan assets [member] | Reportable segments [member] | Puerto Rico [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	(25,590,285)	(25,315,319)
Plan assets [member] | Reportable segments [member] | Brazil [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	(15,466,336)	(16,143,783)
Effect of asset celling [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	(4,422,459)	(3,393,640)	$ (4,428,021)	$ (5,087,543)
Effect of asset celling [member] | Reportable segments [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	4,422,459	3,393,640
Effect of asset celling [member] | Reportable segments [member] | Brazil [member]
Disclosure of defined benefit plans [line items]
Defined benefit obligation and plan assets	$ 4,422,459	$ 3,393,640

Employee Benefits - Summary o_2

Employee Benefits - Summary of the Actuarial Results Generated for the Pension and Retirement Plans as well as the Medical Services (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of actuarial results generated for the pension and retirement plans [line items]
Balance at the beginning of the year	$ 154,847,297	$ 140,696,974	$ 108,118,868
Current service cost	2,090,896	2,810,584	2,591,975
Interest cost on projected benefit obligation	28,913,257	30,482,173	31,001,348
Expected return on plan assets	(15,112,669)	(17,655,119)	(20,070,037)
Changes in the asset ceiling during the period and others	215,544	278,639	445,743
Past service costs and other	139,910	148,253	144,481
Actuarial gain for changes in experience	(23,024)	(8,945)	(22,599)
Actuarial loss/(gain) from changes in demographic assumptions	(48)	(270)	(129)
Actuarial (gain) loss from changes in financial assumptions	(6,907)	20,219	36,163
Net period cost	16,216,959	16,075,534	14,126,945
Actuarial loss for changes in experience	10,728,950		31,606,323
Actuarial gain for changes in experience		(9,677)
Actuarial gain from changes in demographic assumptions	(104,568)	(103,987)	(339,657)
Others		(924,084)
Actuarial loss from changes in financial assumptions	(4,099,321)	3,475,345	7,207,072
Changes in the asset ceiling during the period and others	969,433	(542,430)	(712,064)
Return on plan assets greater than discount rate (shortfall)	(22,198,615)	12,320,777	423,514
Recognized in other comprehensive income	(14,704,121)	14,215,944	38,185,188
Contributions to the pension plan made by the Company	311,108	(1,882,654)	(1,337,610)
Benefits paid	(225,876)
Payments to employees	(25,042,314)	(14,426,720)	(16,996,920)
Effect of translation	7,936	168,219	(1,399,497)
Others	(24,949,146)	(16,141,155)	(19,734,027)
Balance at the end of the year	131,410,989	154,847,297	140,696,974
Less short-term portion	(236,304)	(268,940)	(213,065)
Non-current obligation	131,174,685	154,578,357	140,483,909
Defined benefit obligation [member]
Disclosure of actuarial results generated for the pension and retirement plans [line items]
Balance at the beginning of the year	343,003,240	342,569,774	306,702,447
Current service cost	2,090,896	2,810,584	2,591,975
Interest cost on projected benefit obligation	28,913,257	30,482,173	31,001,348
Actuarial gain for changes in experience	(23,024)	(8,945)	(22,599)
Actuarial loss/(gain) from changes in demographic assumptions	(48)	(270)	(129)
Actuarial (gain) loss from changes in financial assumptions	(6,907)	20,219	36,163
Net period cost	30,974,174	33,303,761	33,606,758
Actuarial loss for changes in experience	10,728,950		31,606,323
Actuarial gain for changes in experience		(9,677)
Actuarial gain from changes in demographic assumptions	(104,568)	(103,987)	(339,657)
Others		(924,084)
Actuarial loss from changes in financial assumptions	(4,099,321)	3,475,345	7,207,072
Recognized in other comprehensive income	6,525,061	2,437,597	38,473,738
Contributions made by plan participants	99,201	137,947	155,188
Benefits paid	(10,574,420)	(19,740,727)	(15,836,928)
Payments to employees	(25,042,314)	(14,426,720)	(16,996,920)
Effect of translation	330,770	(1,278,392)	(3,534,509)
Others	(35,186,763)	(35,307,892)	(36,213,169)
Balance at the end of the year	345,315,712	343,003,240	342,569,774
Less short-term portion	(236,304)	(268,940)	(213,065)
Non-current obligation	345,079,408	342,734,300	342,356,709
Plan assets [member]
Disclosure of actuarial results generated for the pension and retirement plans [line items]
Balance at the beginning of the year	(191,549,583)	(206,300,821)	(203,671,122)
Expected return on plan assets	(15,112,669)	(17,655,119)	(20,070,037)
Past service costs and other	139,910	148,253	144,481
Net period cost	(14,972,759)	(17,506,866)	(19,925,556)
Return on plan assets greater than discount rate (shortfall)	(22,198,615)	12,320,777	423,514
Recognized in other comprehensive income	(22,198,615)	12,320,777	423,514
Contributions made by plan participants	(99,201)	(137,947)	(155,188)
Contributions to the pension plan made by the Company	311,108	(1,882,654)	(1,337,610)
Benefits paid	10,348,544	19,740,727	15,836,928
Effect of translation	(166,676)	2,217,201	2,528,213
Others	10,393,775	19,937,327	16,872,343
Balance at the end of the year	(218,327,182)	(191,549,583)	(206,300,821)
Non-current obligation	(218,327,182)	(191,549,583)	(206,300,821)
Effect of asset celling [member]
Disclosure of actuarial results generated for the pension and retirement plans [line items]
Balance at the beginning of the year	3,393,640	4,428,021	5,087,543
Changes in the asset ceiling during the period and others	215,544	278,639	445,743
Net period cost	215,544	278,639	445,743
Changes in the asset ceiling during the period and others	969,433	(542,430)
Recognized in other comprehensive income	969,433	(542,430)	(712,064)
Effect of translation	(156,158)	(770,590)	(393,201)
Others	(156,158)	(770,590)	(393,201)
Balance at the end of the year	4,422,459	3,393,640	4,428,021
Non-current obligation	$ 4,422,459	$ 3,393,640	$ 4,428,021

Employee Benefits - Additional

Employee Benefits - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of defined benefit plans [line items]
Current service cost	$ 2,090,896	$ 2,810,584	$ 2,591,975
Expected return on plan assets	15,112,669	17,655,119	20,070,037
Net pension plan liability and plan assets	(131,410,989)	(154,847,297)	(140,696,974)	$ (108,118,868)
Defined contribution plan, payment	$ (225,876)
Severance benefit obligations, description	Severance benefit obligations for employees, whose employment commenced before January 1, 2003, excluding civil servants, are covered by defined benefit plans. Upon termination of employment by A1 Telekom Austria Group or upon retirement, eligible employees receive severance payments. Depending on their time in service, their severance amounts to a multiple of their monthly basic compensation plus variable components such as overtime or bonuses, up to a maximum of twelve monthly salaries. In case of death, the heirs of eligible employees receive 50% of the severance benefits. The primary risks to A1 Telekom Austria Group are salary increases and changes of interest rates.
Severance benefits, in case of death	50.00%
Net period cost (benefit)	$ 18,688,374	$ 18,085,954	16,609,565
Akenes [member]
Disclosure of defined benefit plans [line items]
Defined Benefit Plan, Pension Benefit Obligation, Percentage	24.00%	20.00%
Telekom Austria [member]
Disclosure of defined benefit plans [line items]
Defined benefits plan, eligibility retirement date	Jan. 1, 1975
Telekom Austria [member] | Defined Contribution Plans [member]
Disclosure of defined benefit plans [line items]
Annual expense of defined contribution plan	$ 286,195	$ 295,567
Telekom Austria [member] | Unfunded Pension Plans [member]
Disclosure of defined benefit plans [line items]
Plan description	Part of the Telmex´s employees are covered under defined benefit pension plans and seniority premiums. Pension benefits and seniority premiums are determined on the basis in their final year of employment, their seniority, and their age at the time of retirement. Telmex has set up an irrevocable trust fund to finance these employee benefits and has adopted the policy of making contributions to such fund when it is considered necessary.
Benefit determination maximum percentage on salary before retirement	80.00%
Telmexs [member]
Disclosure of defined benefit plans [line items]
Net pension plan liability and plan assets	$ 177,270,561	$ 150,090,481
Rate of equity instruments		36.90%
Rate of debt instruments	47.50%
Recorded of pension plan re-measurement value in defined pension plan		$ (9,928,728)	$ 11,753,416
Increase in fair value of related party pension plan investments	$ 20,234,095	14,820,220
Top of range [member] | Telekom Austria [member] | Defined Contribution Plans [member]
Disclosure of defined benefit plans [line items]
Percentage of defined contribution plan	5.00%
Austria [member]
Disclosure of defined benefit plans [line items]
Service award description	Civil servants and certain employees (in the following “employees”) are eligible to receive service awards. In accordance with the legal regulations, eligible employees receive a cash bonus of two months’ salary after 25 years of service and four months’ salary after 40 years of service. Employees with at least 35 years of service when retiring (at the age of 65) or who are retiring based on specific legal regulations are also eligible to receive the service award of four monthly salaries. The obligation is accrued over the period of service, taking into account the employee turnover rate for employees who leave employment prematurely. The main risk that A1 Telekom Austria Group is exposed to is the risk of development of salary increases and changes of interest rates.
Service period to receive bonus, description	after 25 years
Service period to receive bonus, description	after 40 years
Contributions to social security, net of the share contributed by civil servants	$ 1,436,587	1,474,721
Contributions to the government, net of the share contributed by civil servants	601,626	601,476
Austria [member] | Defined Contribution Plans [member]
Disclosure of defined benefit plans [line items]
DCP liability	114,233	134,034
Austria [member] | Telekom Austria [member]
Disclosure of defined benefit plans [line items]
Percentage of contribution to social security			12.55%
Austria [member] | Telekom Austria [member] | Defined Contribution Plans [member]
Disclosure of defined benefit plans [line items]
Defined contribution plan, payment	$ 68,425	66,294
Austria [member] | Bottom of range [member]
Disclosure of defined benefit plans [line items]
Service period to receive bonus, description	35 years of service when retiring (at the age of 65)
Percentage of contribution to active civil servants	29.00%
Austria [member] | Top of range [member]
Disclosure of defined benefit plans [line items]
Percentage of contribution to active civil servants	7.00%
Brazil [member]
Disclosure of defined benefit plans [line items]
Current service cost	$ 225,984	268,562	$ 99,498
Employee benefits	1,380,764	2,111,801
Cost of labor	61,649	2,930	3,365
Net period cost (benefit)	724,587	722,412	511,964
Employee benefits	1,380,764	2,111,801
Brazil [member] | Claro Brasil [member] | Defined Contribution Plans [member]
Disclosure of defined benefit plans [line items]
DCP liability	$ 274,630	980,014
Brazil [member] | Bottom of range [member] | Claro Brasil [member] | Participants enrolled before October 31st, 2014 [member]
Disclosure of defined benefit plans [line items]
Employee contributions to the plan	1.00%
Brazil [member] | Bottom of range [member] | Claro Brasil [member] | Participants enrolled after October 31st, 2014 [member]
Disclosure of defined benefit plans [line items]
Employee contributions to the plan	1.00%
Brazil [member] | Top of range [member] | Claro Brasil [member]
Disclosure of defined benefit plans [line items]
Employer contributions to the plan	8.00%
Brazil [member] | Top of range [member] | Claro Brasil [member] | Participants enrolled before October 31st, 2014 [member]
Disclosure of defined benefit plans [line items]
Employee contributions to the plan	8.00%
Brazil [member] | Top of range [member] | Claro Brasil [member] | Participants enrolled after October 31st, 2014 [member]
Disclosure of defined benefit plans [line items]
Employee contributions to the plan	7.00%
Mexico [member]
Disclosure of defined benefit plans [line items]
Current service cost			49,050
Expected return on plan assets	$ 267,728	174,994
Employee benefits	1,099,732	916,534
Net period cost (benefit)	15,507,652	14,911,208	12,788,464
Ecuador [member]
Disclosure of defined benefit plans [line items]
Current service cost	111,353	67,402	34,425
Employee benefits	601,239	488,161
Net period cost (benefit)	111,353	67,402	$ 34,425
Employee benefits	601,239	488,161
Central America [Member]
Disclosure of defined benefit plans [line items]
Employee benefits	285,223	250,819
Net period cost (benefit)	42,360	19,462
Employee benefits	$ 285,223	$ 250,819

Employee Benefits - Schedule of

Employee Benefits - Schedule of Plan Assets Invested (Detail)	Dec. 31, 2021	Dec. 31, 2020
Puerto Rico [member]
Disclosure of fair value of plan assets [line items]
Equity instruments	42.00%	43.00%
Debt instruments	21.00%	22.00%
Others	37.00%	35.00%
Total	100.00%	100.00%
Brazil [member]
Disclosure of fair value of plan assets [line items]
Debt instruments	94.00%	95.00%
Others	6.00%	5.00%
Total	100.00%	100.00%
Mexico [member]
Disclosure of fair value of plan assets [line items]
Equity instruments	74.00%	68.00%
Debt instruments	26.00%	32.00%
Total	100.00%	100.00%

Employee Benefits - Summary o_3

Employee Benefits - Summary of Assumptions Used in Determining the Net Period Cost (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Puerto Rico [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	2.75%	2.34%	3.23%
Rate of future salary increases	2.75%	2.75%	2.75%
Percentage of increase in health care costs for the coming year	2.72%	2.28%	3.18%
Brazil [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return			7.03%
Rate of future salary increases	3.25%	3.25%	3.80%
Percentage of increase in health care costs for the coming year	9.44%	9.96%	10.30%
Year to which this level will be maintained	2030	2031	2029
Brazil [member] | Bottom of range [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	8.51%	6.48%
Brazil [member] | Top of range [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	8.67%	7.39%
Mexico [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	10.40%	10.04%	10.50%
Rate of future salary increases	2.80%	2.84%	3.20%
Europe [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Rate of increase of pensions	1.60%	1.60%	1.60%
Europe [member] | Bottom of range [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Employee turnover rate	0.00%	0.00%	0.00%
Europe [member] | Top of range [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Employee turnover rate	1.12%	1.31%	1.38%
Europe [member] | Actuarial assumption rate one [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	0.25%	0.25%	0.75%
Rate of future salary increases	3.00%	3.00%	3.00%
Europe [member] | Actuarial assumption rate two [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	0.75%	0.50%	1.00%
Rate of future salary increases	3.40%	3.50%	3.50%
Europe [member] | Actuarial assumption rate three [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Discount rate and long-term rate return	1.00%	0.75%	1.25%
Rate of future salary increases	4.00%	4.10%	4.40%

Employee Benefits - Summary o_4

Employee Benefits - Summary of Increase (Decrease) Would Have Resulted in the DBO Pension and Other Benefits (Detail) $ in Thousands	Dec. 31, 2021MXN ($)
-100 [member] | Discount rate [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
DBO pension and other benefits	$ 32,094,727
-100 [member] | Health care cost trend rate [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
DBO pension and other benefits	(431,724)
+100 [member] | Discount rate [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
DBO pension and other benefits	(22,626,321)
+100 [member] | Health care cost trend rate [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
DBO pension and other benefits	$ 499,356

Employee Benefits - Summary o_5

Employee Benefits - Summary of Long-Term Direct Employee Benefits (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of long term direct employee benefits [abstract]
Beginning balance	$ 8,750,603	$ 8,175,767
Effect of translation	(328,619)	1,256,880
Increase of the year	1,824,693	1,729,392
Applications, Payments	(2,320,831)	(2,411,436)
Ending balance	$ 7,925,846	$ 8,750,603

Financial Assets and Liabilit_3

Financial Assets and Liabilities - Summary of Categorization of Financial Instruments, Excluding Cash and Cash Equivalents (Detail) - MXN ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financial Assets:
Financial Assets	$ 451,228,622	$ 374,266,941
Financial Liabilities:
Financial Liabilities	729,471,438	837,915,964
Loans and receivables [member]
Financial Assets:
Financial Assets	167,214,958	172,667,655
Loans and receivables [member] | Related parties [member]
Financial Assets:
Financial Assets	1,158,611	1,391,300
Fair value through profit or loss [member]
Financial Assets:
Financial Assets	10,130,806	20,928,335
Fair value through OCI [member]
Financial Assets:
Financial Assets	124,582,933	54,573,455
Equity investments at fair value through OCI and other short term investments [member]
Financial Assets:
Financial Assets	117,703,202	50,096,051
Equity investments at fair value through OCI and other short term investments [member] | Loans and receivables [member]
Financial Assets:
Financial Assets	15,026	62,940
Equity investments at fair value through OCI and other short term investments [member] | Fair value through OCI [member]
Financial Assets:
Financial Assets	117,688,176	50,033,111
Accounts receivable from subscribers distributors contractual assets and other net [member] | Loans and receivables [member]
Financial Assets:
Financial Assets	166,041,321	171,213,415
Financial instruments, class [member]
Financial Liabilities:
Financial Liabilities	10,130,806	14,230,249
Financial instruments, class [member] | Fair value through profit or loss [member]
Financial Assets:
Financial Assets	10,130,806	20,928,335
Liability Related to Right of Use of Assets [Member]
Financial Liabilities:
Financial Liabilities	98,654,225	109,327,241
Liability Related to Right of Use of Assets [Member] | Loans and receivables [member]
Financial Liabilities:
Financial Liabilities		109,327,241
Total Current Assets [Member] | Loans and receivables [member]
Financial Assets:
Financial Assets	167,214,958
Total Current Assets [Member] | Fair value through profit or loss [member]
Financial Assets:
Financial Assets	10,130,806
Total Current Assets [Member] | Fair value through OCI [member]
Financial Assets:
Financial Assets	117,688,176	50,033,111
Debt Instruments At Fair Value Through OCI [Member] | Fair value through profit or loss [member]
Financial Assets:
Financial Assets		4,540,344
Debt Instruments At Fair Value Through OCI [Member] | Fair value through OCI [member]
Financial Assets:
Financial Assets	6,894,757
Loans and receivables [member]
Financial Liabilities:
Financial Liabilities	868,243,015	928,705,585
Loans and receivables [member] | Related parties [member]
Financial Liabilities:
Financial Liabilities	4,216,882	3,999,916
Loans and receivables [member] | Debt [Member]
Financial Liabilities:
Financial Liabilities	564,030,102	628,382,956
Loans and receivables [member] | Accounts payable [Member]
Financial Liabilities:
Financial Liabilities	201,341,806	186,995,472
Loans and receivables [member] | Liability Related to Right of Use of Assets [Member]
Financial Liabilities:
Financial Liabilities	98,654,225
Loans and receivables [member] | Equity investments at fair value through OCI [Member]
Financial Assets:
Financial Assets		0
Loans and receivables [member] | Total Current Assets [Member]
Financial Assets:
Financial Assets		172,667,655
Fair value through profit or loss [Member]
Financial Liabilities:
Financial Liabilities	10,034,508	14,230,249
Fair value through profit or loss [Member] | Financial instruments, class [member]
Financial Liabilities:
Financial Liabilities	$ 10,034,508
Fair value through profit or loss [Member] | Total Current Assets [Member]
Financial Assets:
Financial Assets		$ 20,928,335

Financial Assets and Liabilit_4

Financial Assets and Liabilities - Summary of Fair Value for Financial Assets (Excluding Cash and Cash Equivalents) and Financial Liabilities (Detail) - MXN ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets:
Financial Assets	$ 451,228,622	$ 374,266,941
Current derivative financial assets	444,333,865	369,726,597
Liabilities:
Financial Liabilities	729,471,438	837,915,964
Debt [member]
Liabilities:
Financial Liabilities	620,782,705	714,358,474
Financial instruments, class [member]
Liabilities:
Financial Liabilities	10,130,806	14,230,249
Equity investments at fair value through OCI and other short term investments [member]
Assets:
Financial Assets	117,703,202	50,096,051
Pension plan assets [member]
Assets:
Financial Assets	218,327,182	191,549,583
Derivative Financial Instruments [Member]
Assets:
Financial Assets	10,034,508	20,928,335
Liability Related to Right of Use of Assets [Member]
Liabilities:
Financial Liabilities	98,654,225	109,327,241
Revalued Of Assets [Member]
Assets:
Financial Assets	98,172,675	107,152,628
Debt Instruments At Fair Value Through OCI [Member]
Assets:
Equity investments at fair value through OCI and other short-term investments (Note 4)	6,894,757	4,540,344
Level 1 [member]
Assets:
Financial Assets	313,836,780	218,972,202
Current derivative financial assets	313,836,780	218,972,202
Liabilities:
Financial Liabilities	539,314,390	688,039,803
Level 1 [member] | Debt [member]
Liabilities:
Financial Liabilities	440,660,165	578,712,562
Level 1 [member] | Equity investments at fair value through OCI and other short term investments [member]
Assets:
Financial Assets	117,688,176	50,033,111
Level 1 [member] | Pension plan assets [member]
Assets:
Financial Assets	196,148,604	168,939,091
Level 1 [member] | Liability Related to Right of Use of Assets [Member]
Liabilities:
Financial Liabilities	98,654,225	109,327,241
Level 2 [member]
Assets:
Financial Assets	39,164,727	48,121,011
Current derivative financial assets	32,269,970	43,580,667
Liabilities:
Financial Liabilities	190,157,048	149,876,161
Level 2 [member] | Debt [member]
Liabilities:
Financial Liabilities	180,122,540	135,645,912
Level 2 [member] | Financial instruments, class [member]
Liabilities:
Financial Liabilities	10,130,806	14,230,249
Level 2 [member] | Equity investments at fair value through OCI and other short term investments [member]
Assets:
Financial Assets	15,026	62,940
Level 2 [member] | Pension plan assets [member]
Assets:
Financial Assets	22,124,138	22,589,392
Level 2 [member] | Derivative Financial Instruments [Member]
Assets:
Financial Assets	10,034,508	20,928,335
Level 2 [member] | Debt Instruments At Fair Value Through OCI [Member]
Assets:
Equity investments at fair value through OCI and other short-term investments (Note 4)	6,894,757
Level 3 [member]
Assets:
Financial Assets	98,227,115	107,173,728
Current derivative financial assets	98,227,115	107,173,728
Level 3 [member] | Pension plan assets [member]
Assets:
Financial Assets	54,440	21,100
Level 3 [member] | Revalued Of Assets [Member]
Assets:
Financial Assets	$ 98,172,675	$ 107,152,628

Financial Assets and Liabilit_5

Financial Assets and Liabilities - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about financial instruments [line items]
Transfers out of Level 1 into Level 2 of fair value hierarchy	$ 0	$ 0
Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Net realized gains (losses) related to derivative financial instruments	$ (1,664,465)	$ 2,606,938

Financial Assets and Liabilit_6

Financial Assets and Liabilities - Summary of changes in liabilities arising from financing activities (Detail) - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance	$ 737,710,197	$ 744,851,210
Cash flow	(88,899,031)	(82,715,366)
Foreign currency exchange and other	13,873,161	75,574,353
Ending balance	662,684,327	737,710,197
Debt [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance	628,382,956	624,254,477
Cash flow	(58,354,281)	(53,091,801)
Foreign currency exchange and other	(5,998,573)	57,220,280
Ending balance	564,030,102	628,382,956
Liability Related to Right of Use of Assets [Member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Beginning balance	109,327,241	120,596,733
Cash flow	(30,544,750)	(29,623,565)
Foreign currency exchange and other	19,871,734	18,354,073
Ending balance	$ 98,654,225	$ 109,327,241

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - MXN ($) $ / shares in Units, $ in Thousands	Apr. 26, 2021	Apr. 24, 2020	Dec. 31, 2021	Dec. 31, 2020
Disclosure of classes of share capital [line items]
Capital requirements			$ 252,371
Number of shares issued			66,411,260,649
Number of shares outstanding			64,689,740,633	66,862,560,649
Number of treasury shares held			4,200,651,521	1,721,520,016
Merger transaction description			any transaction representing 20% or more of the Company’s consolidated assets
Legal reserve			$ 358,440	$ 358,440
Amount of Mexican withholding tax			10.00%
Bottom of range [member] | Legal reserve [member]
Disclosure of classes of share capital [line items]
Increase in legal reserve			5.00%
Top of range [member] | Legal reserve [member]
Disclosure of classes of share capital [line items]
Increase in legal reserve			20.00%
Capital Stock Class AA Voting Rights [member]
Disclosure of classes of share capital [line items]
Number of shares issued			20,554,697,460
Capital Stock Class A Voting Rights [member]
Disclosure of classes of share capital [line items]
Number of shares issued			502,404,175
Capital Stock Class L Limited Voting Rights [member]
Disclosure of classes of share capital [line items]
Number of shares issued			45,354,159,014
Capital Stock Class Aa [member]
Disclosure of classes of share capital [line items]
Number of shares outstanding			20,554,697,460	20,578,173,274
Dividends paid	$ 0.40	$ 0.38
Capital Stock Class Aa [member] | Bottom of range [member]
Disclosure of classes of share capital [line items]
Percentage of capital stock			20.00%
Capital Stock Class Aa [member] | Top of range [member]
Disclosure of classes of share capital [line items]
Percentage of capital stock			51.00%
Capital Stock Class A [member]
Disclosure of classes of share capital [line items]
Number of shares outstanding			502,404,175	519,926,536
Dividends paid	0.40	0.38
Capital Stock Class A [member] | Bottom of range [member]
Disclosure of classes of share capital [line items]
Percentage of capital stock			19.60%
Capital Stock Class A [member] | Top of range [member]
Disclosure of classes of share capital [line items]
Percentage of capital stock			49.00%
Capital Stock Class L [member]
Disclosure of classes of share capital [line items]
Number of shares outstanding			43,632,638,998	45,764,460,839
Number of treasury shares held				4,200,629,621
Periodic payment of dividend	0.20	0.19
Capital Stock Class L [member] | Top of range [member]
Disclosure of classes of share capital [line items]
Percentage of capital stock			80.00%
Class L [member]
Disclosure of classes of share capital [line items]
Dividends paid	$ 0.40	$ 0.38
Periodic payable date of dividend	July 19 and November 08, 2021	July 20 and November 09, 2020
Class A [member]
Disclosure of classes of share capital [line items]
Number of treasury shares held				21,900

Shareholders Equity - Summary o

Shareholders Equity - Summary of Computation of Basic and Diluted Earnings per Share (Detail) $ / shares in Units, $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021MXN ($)$ / sharesshares	Dec. 31, 2021USD ($)shares	Dec. 31, 2020MXN ($)$ / sharesshares		Dec. 31, 2019MXN ($)$ / sharesshares
Earnings per share [abstract]
Net profit for the period attributable to equity holders of the parent from continuing operations	$ 70,712,449	$ 3,435	$ 29,859,980	[1]	$ 57,886,001	[1]
Net profit for the period attributable to equity holders of the parent from discontinued operations	121,710,718	$ 5,913	16,992,625	[1]	9,844,889	[1]
Net profit for the period attributable to equity holders of the parent | $	$ 192,423,167		$ 46,852,605		$ 67,730,890
Weighted average shares (in millions) | shares	65,967	65,967	66,265		66,016
Earnings per share attributable to equity holders of the parent continuing operations	$ 1.07		$ 0.45		$ 0.88
Earnings per share attributable to equity holders of the parent discontinued operations	$ 1.85		$ 0.26		$ 0.15
[1]	Restated for discontinued operations.

Components of other comprehen_3

Components of other comprehensive loss (income) - Summary of Movement on Components of Other Comprehensive Loss (Detail) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)		Dec. 31, 2019MXN ($)
Controlling interest:
Unrealized gain (loss) on equity investments at fair value, net of deferred taxes	$ 4,560,869	$ 222	$ (1,952,414)	[1]	$ 883,409	[1]
Translation effect of foreign entities	(7,134,153)		(11,515,297)		(35,536,252)
Asset's revaluation surplus net of deferred taxes			77,230,031
Total equity attributable to equity holders of the parent [member]
Controlling interest:
Unrealized gain (loss) on equity investments at fair value, net of deferred taxes	4,560,869		(1,952,414)		883,409
Translation effect of foreign entities	(4,837,206)		(13,558,774)		(34,010,066)
Remeasurement of defined benefit plan, net of deferred taxes	11,100,835		(10,026,454)		(29,153,554)
Asset's revaluation surplus net of deferred taxes			64,835,155
Non-controlling interest of the items above	(2,135,886)		14,165,249		(1,908,304)
Total other comprehensive (loss) income items for the year, net of deferred taxes	7,859,449		$ 53,462,762		$ (64,188,515)
Total equity attributable to equity holders of the parent [member] | Discontinued operations [member]
Controlling interest:
Translation effect of foreign entities	$ (829,163)
[1]	Restated for discontinued operations.

Valuation of derivatives intere

Valuation of derivatives interest cost from labor obligations and other financial items net - Schedule of Valuation of Derivatives and Other Financial Items (Detail) $ in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)		Dec. 31, 2019MXN ($)
Disclosure of detailed information about financial instruments [abstract]
Gain (loss) in valuation of derivatives, net		$ (6,755,214)		$ 12,378,193		$ 4,432,023
Capitalized interest expense (Note 10 b)		1,527,259		1,771,613		2,233,358
Commissions		(1,071,935)		(1,135,082)		(2,820,477)
Interest cost of labor obligations (Note 18)		(14,375,520)		(13,105,693)		(11,377,054)
Interest expense on taxes		(243,075)		(59,032)		(516,522)
Dividend received (Note 4)		2,628,600		2,122,826		1,773,336
Gain on net monetary positions		4,876,842	$ 237	3,262,512	[1]	4,267,194	[1]
Other financial cost	[2]	(837,023)		(3,942,459)		(4,989,702)
Total with discontinued operations		$ (14,250,066)	$ (692)	$ 1,292,878	[1]	$ (6,997,844)	[1]
[1]	Restated for discontinued operations.
[2]	Includes disposals related to the sale of TracFone. See Note 2Ac.

Segments - Additional Informati

Segments - Additional Information (Detail) - Operating segments [member]	12 Months Ended
	Dec. 31, 2021
Disclosure of Operating Segments [Line Items]
Percentage of entity revenue	10.00%
Percentage of taxable profit	10.00%
Percentage of consolidated assets	10.00%

Segments - Summary of Operating

Segments - Summary of Operating Segments (Detail) $ in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2021MXN ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020MXN ($)		Dec. 31, 2019MXN ($)		Dec. 31, 2021USD ($)
Disclosure of Operating Segments [Line Items]
External revenues		$ 855,534,871		$ 839,707,160		$ 851,483,476
Total revenues		855,534,871	$ 41,564	839,707,160	[1]	851,483,476	[1]
Depreciation and amortization		162,626,866	7,901	162,682,398	[1]	157,518,787	[1]
Operating income (loss)		166,132,641		145,503,379		143,798,284
Interest income		3,834,827	186	5,062,036	[1]	6,284,672	[1]
Interest expense		36,025,312	1,750	38,661,485	[1]	37,910,954	[1]
Income tax		28,144,769	1,367	13,509,270	[1]	49,914,055	[1]
Equity interest in net income (loss) of associated companies		113,918		(287,006)		(17,609)
Net profit (loss) attributable to equity holders of the parent continues operations		70,712,449	3,435	29,859,980	[1]	57,886,001	[1]
Net profit (loss) attributable to equity holders of the parent discontinued operations		121,710,718	$ 5,913	16,992,625	[1]	9,844,889	[1]
Net profit (loss) attributable to equity holders of the parent		192,423,167		46,852,605		67,730,890
Assets by segment		1,689,649,849		1,625,048,227		1,531,933,657		$ 82,086
Plant, property and equipment, net		633,024,004		615,777,003		639,343,370
Revalued of assets		98,172,675		107,152,628
Goodwill		136,578,194		143,052,859		152,899,801		6,635
Trademarks, net		3,292,163		3,777,418		3,488,709
Licenses and rights, net		123,286,860		111,630,716		104,848,545
Investments in associated companies		3,052,481		1,829,760		2,474,193
Liabilities by segments		1,235,608,123		1,309,930,609		1,305,026,792		$ 60,029
Mexico [member]
Disclosure of Operating Segments [Line Items]
Net profit (loss) attributable to equity holders of the parent continues operations		34,195,093		3,613,907		42,598,946
Telmex [member]
Disclosure of Operating Segments [Line Items]
Net profit (loss) attributable to equity holders of the parent continues operations		4,594,450		(1,085,038)		(1,705,068)
Brazil [member]
Disclosure of Operating Segments [Line Items]
Net profit (loss) attributable to equity holders of the parent continues operations		14,185,905		4,963,424		5,618,095
Southern Cone [member]
Disclosure of Operating Segments [Line Items]
Net profit (loss) attributable to equity holders of the parent continues operations		415,994		1,456,062		(6,984)
Colombia [member]
Disclosure of Operating Segments [Line Items]
Net profit (loss) attributable to equity holders of the parent continues operations		5,959,563		16,579,303		9,571,046
Andean [member]
Disclosure of Operating Segments [Line Items]
Net profit (loss) attributable to equity holders of the parent continues operations		4,180,473		4,649,047		(2,604,646)
Central America [member]
Disclosure of Operating Segments [Line Items]
Net profit (loss) attributable to equity holders of the parent continues operations		4,099,930		1,919,558		2,335,963
U.S.A [member]
Disclosure of Operating Segments [Line Items]
Net profit (loss) attributable to equity holders of the parent continues operations		5,151,166		3,294,111		4,312,630
Assets by segment	[1]			35,083,285		30,775,893
Plant, property and equipment, net	[1]			1,761,595		1,405,755
Goodwill	[1]			3,362,899		3,220,105
Trademarks, net	[1]			269,325		369,950
Liabilities by segments	[1]			33,141,315		31,557,816
Caribbean [member]
Disclosure of Operating Segments [Line Items]
Net profit (loss) attributable to equity holders of the parent continues operations		8,313,018		7,777,426		5,051,145
Europe [member]
Disclosure of Operating Segments [Line Items]
Net profit (loss) attributable to equity holders of the parent continues operations		(10,383,143)		(13,307,820)		(7,285,126)
Operating segments [member] | Mexico [member]
Disclosure of Operating Segments [Line Items]
External revenues		225,219,719		214,578,600		226,164,231
Intersegment revenues		18,041,465		17,663,525		11,676,015
Total revenues		243,261,184		232,242,125		237,840,246
Depreciation and amortization		25,797,791		24,748,756		24,742,622
Operating income (loss)		77,783,972		70,851,525		67,694,409
Interest income		14,864,242		21,322,406		23,713,455
Interest expense		24,586,641		30,936,195		30,972,658
Income tax		25,002,390		4,905,863		30,000,511
Equity interest in net income (loss) of associated companies		85,648		(3,820)		(3,732)
Net profit (loss) attributable to equity holders of the parent		34,195,093		3,613,907		42,598,946
Assets by segment		999,502,407		947,396,510		915,233,048
Plant, property and equipment, net		50,420,866		52,117,395		54,589,459
Goodwill		26,965,618		26,949,185		27,396,393
Trademarks, net		90,673		126,823		46,476
Licenses and rights, net		11,081,972		12,017,318		11,087,882
Investments in associated companies		4,725,279		51,645		3,562,323
Liabilities by segments		679,954,783		725,408,198		718,354,229
Operating segments [member] | Telmex [member]
Disclosure of Operating Segments [Line Items]
External revenues		87,189,642		77,920,910		84,173,980
Intersegment revenues		15,237,420		13,668,264		11,863,364
Total revenues		102,427,062		91,589,174		96,037,344
Depreciation and amortization		12,740,332		13,341,479		16,346,927
Operating income (loss)		21,100,316		11,204,433		9,731,852
Interest income		758,126		1,479,021		1,839,973
Interest expense		1,385,103		1,306,867		1,439,785
Income tax		2,496,010		577,178		1,528,229
Equity interest in net income (loss) of associated companies		44,525		23,955		46,789
Net profit (loss) attributable to equity holders of the parent		4,594,450		(1,085,038)		(1,705,068)
Assets by segment		195,869,232		203,081,314		201,283,526
Plant, property and equipment, net		118,056,718		110,751,083		106,869,482
Goodwill		215,381		215,381		215,381
Trademarks, net		149,865		181,094		212,324
Licenses and rights, net		129,233		100,623		452,504
Investments in associated companies		522,403		613,449		610,807
Liabilities by segments		176,177,522		193,840,756		175,774,964
Operating segments [member] | Brazil [member]
Disclosure of Operating Segments [Line Items]
External revenues		148,729,232		163,865,421		177,596,077
Intersegment revenues		4,044,386		4,207,466		4,182,248
Total revenues		152,773,618		168,072,887		181,778,325
Depreciation and amortization		40,342,871		41,795,397		39,424,474
Operating income (loss)		21,867,457		25,203,504		28,846,565
Interest income		2,104,574		2,904,430		3,155,681
Interest expense		15,875,138		17,976,227		19,021,965
Income tax		(9,603,701)		(4,442,598)		4,251,116
Equity interest in net income (loss) of associated companies		4,575		(2,972)		(1,538)
Net profit (loss) attributable to equity holders of the parent		14,185,905		4,963,424		5,618,095
Assets by segment		407,458,440		386,982,711		382,561,753
Plant, property and equipment, net		153,607,199		145,307,497		174,761,167
Revalued of assets		33,004,669		36,076,207
Goodwill		15,335,322		16,048,092		25,379,805
Trademarks, net						37,207
Licenses and rights, net		39,620,009		26,171,345		29,324,718
Investments in associated companies		65,699		64,125		111,073
Liabilities by segments		273,655,967		263,989,566		297,877,328
Operating segments [member] | Southern Cone [member]
Disclosure of Operating Segments [Line Items]
External revenues		62,030,033		55,484,744		54,230,682
Intersegment revenues		329,000		1,220,100		11,041,705
Total revenues		62,359,033		56,704,844		65,272,387
Depreciation and amortization		14,996,243		13,095,004		13,847,506
Operating income (loss)		2,144,825		1,877,079		4,007,614
Interest income		821,594		980,581		896,256
Interest expense		2,987,751		3,334,966		3,849,318
Income tax		(3,795,160)		992,831		2,022,336
Equity interest in net income (loss) of associated companies		(19,073)		(15,422)		(23,424)
Net profit (loss) attributable to equity holders of the parent		415,994		1,456,062		(6,984)
Assets by segment		135,862,040		118,266,380		132,722,497
Plant, property and equipment, net		64,864,986		62,157,797		60,537,650
Revalued of assets		6,159,077		7,494,408
Goodwill		5,191,841		5,436,675		5,241,305
Licenses and rights, net		13,791,003		12,099,873		12,103,980
Investments in associated companies		(34,401)		(20,970)		(7,806)
Liabilities by segments		72,702,285		61,786,265		103,330,525
Operating segments [member] | Colombia [member]
Disclosure of Operating Segments [Line Items]
External revenues		79,312,071		77,282,658		74,274,684
Intersegment revenues		360,638		352,694		361,386
Total revenues		79,672,709		77,635,352		74,636,070
Depreciation and amortization		15,067,211		14,413,760		13,439,489
Operating income (loss)		15,165,356		15,111,947		15,324,977
Interest income		431,314		822,447		1,306,571
Interest expense		2,240,707		2,586,708		2,952,123
Income tax		3,112,946		2,078,789		5,405,452
Net profit (loss) attributable to equity holders of the parent		5,959,563		16,579,303		9,571,046
Assets by segment		133,232,525		132,210,369		115,851,227
Plant, property and equipment, net		48,888,907		48,876,853		50,133,642
Revalued of assets		10,266,464		12,893,284
Goodwill		11,685,585		12,253,743		12,124,685
Licenses and rights, net		11,384,533		12,363,039		5,530,422
Investments in associated companies		351		395		391
Liabilities by segments		65,631,866		63,610,642		55,576,253
Operating segments [member] | Andean [member]
Disclosure of Operating Segments [Line Items]
External revenues		52,888,323		53,846,358		55,440,675
Intersegment revenues		73,828		88,305		92,249
Total revenues		52,962,151		53,934,663		55,532,924
Depreciation and amortization		11,211,523		11,447,356		10,256,129
Operating income (loss)		7,457,802		8,698,645		8,023,002
Interest income		833,540		1,049,261		1,283,788
Interest expense		1,213,421		2,223,478		2,422,887
Income tax		2,375,281		3,115,693		1,681,159
Net profit (loss) attributable to equity holders of the parent		4,180,473		4,649,047		(2,604,646)
Assets by segment		95,719,937		101,717,708		94,021,632
Plant, property and equipment, net		34,395,339		36,102,261		39,068,450
Revalued of assets		8,389,460		9,500,708
Goodwill		4,688,154		4,866,363		4,895,331
Licenses and rights, net		5,502,139		6,870,531		8,064,487
Liabilities by segments		44,676,727		53,379,366		55,463,339
Operating segments [member] | Central America [member]
Disclosure of Operating Segments [Line Items]
External revenues		48,468,386		48,073,436		46,602,036
Intersegment revenues		98,530		121,580		132,061
Total revenues		48,566,916		48,195,016		46,734,097
Depreciation and amortization		11,962,486		14,355,899		11,045,817
Operating income (loss)		8,216,945		4,004,501		5,712,068
Interest income		269,379		1,130,767		532,046
Interest expense		1,219,061		1,559,917		1,406,720
Income tax		2,945,700		1,518,953		2,355,380
Equity interest in net income (loss) of associated companies						(28,795)
Net profit (loss) attributable to equity holders of the parent		4,099,930		1,919,558		2,335,963
Assets by segment		101,725,955		88,690,683		77,355,732
Plant, property and equipment, net		42,407,727		37,855,227		38,934,747
Revalued of assets		9,113,632		7,059,247
Goodwill		6,002,380		6,345,659		7,289,748
Licenses and rights, net		5,220,437		5,427,857		4,390,547
Investments in associated companies		26,348		25,413		25,603
Liabilities by segments		42,823,861		34,252,511		37,993,180
Operating segments [member] | Caribbean [member]
Disclosure of Operating Segments [Line Items]
External revenues		37,858,979		37,182,842		34,580,822
Intersegment revenues		2,069,648		1,440,983		1,136,879
Total revenues		39,928,627		38,623,825		35,717,701
Depreciation and amortization		6,987,129		7,094,331		6,322,648
Operating income (loss)		8,661,475		6,701,086		5,741,368
Interest income		701,785		1,105,420		1,478,560
Interest expense		1,066,733		1,658,619		1,435,862
Income tax		2,171,594		2,524,214		719,774
Net profit (loss) attributable to equity holders of the parent		5,151,166		3,294,111		4,312,630
Assets by segment		102,949,901		109,914,293		100,694,650
Plant, property and equipment, net		41,601,009		39,128,447		38,223,641
Revalued of assets		2,564,149		2,572,504
Goodwill		14,186,723		14,186,723		14,186,723
Trademarks, net		229,000		219,087		227,156
Licenses and rights, net		10,847,685		8,616,880		7,942,670
Liabilities by segments		53,885,848		60,839,340		54,276,868
Operating segments [member] | Europe [member]
Disclosure of Operating Segments [Line Items]
External revenues		113,838,486		111,472,191		98,420,289
Total revenues		113,838,486		111,472,191		98,420,289
Depreciation and amortization		27,469,463		25,593,204		24,975,146
Operating income (loss)		13,421,147		13,159,865		8,687,862
Interest income		116,031		90,746		115,359
Interest expense		2,414,415		2,546,255		2,220,168
Income tax		3,438,161		2,234,065		1,946,255
Equity interest in net income (loss) of associated companies		(1,757)		(288,747)		(6,909)
Net profit (loss) attributable to equity holders of the parent		8,313,018		7,777,426		5,051,145
Assets by segment		210,944,575		239,583,759		191,744,924
Plant, property and equipment, net		79,764,422		82,595,077		75,707,738
Revalued of assets		28,675,224		31,556,270
Goodwill		52,307,190		53,388,139		52,950,325
Trademarks, net		2,822,625		2,981,089		2,595,596
Licenses and rights, net		25,709,849		27,963,250		25,951,335
Liabilities by segments		134,357,142		138,747,621		124,319,541
Eliminations [member]
Disclosure of Operating Segments [Line Items]
Intersegment revenues		(40,254,915)		(38,762,917)		(40,485,907)
Total revenues		(40,254,915)		(38,762,917)		(40,485,907)
Depreciation and amortization		(3,948,183)		(3,202,788)		(2,881,971)
Operating income (loss)		(9,686,654)		(11,309,206)		(9,971,433)
Interest income		(17,065,758)		(25,823,043)		(28,037,017)
Interest expense		(16,963,658)		(25,467,747)		(27,810,532)
Income tax		1,548		4,282		3,843
Net profit (loss) attributable to equity holders of the parent		(10,383,143)		3,684,805		2,559,763
Assets by segment		(693,615,163)		(737,878,785)		(710,311,225)
Plant, property and equipment, net		(983,169)		(876,229)		(888,361)
Investments in associated companies		(2,253,198)		1,095,703		(1,828,198)
Liabilities by segments		$ (308,257,878)		$ (319,064,971)		$ (349,497,251)
[1]	Restated for discontinued operations.

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - MXN ($)	Apr. 30, 2022	Apr. 14, 2022	Mar. 18, 2022	Dec. 31, 2021	Dec. 31, 2020	Jul. 31, 2020
Disclosure of non-adjusting events after reporting period [line items]
Borrowings				$ 564,030,102,000	$ 628,382,956,000
Twenty Twenty Business Acquisition [Member] | Claro [Member]
Disclosure of non-adjusting events after reporting period [line items]
Consideration transferred, acquisition-date fair value					$ 16,500
Twenty Twenty Business Acquisition [Member] | Claro [Member] | Joint Offer [Member]
Disclosure of non-adjusting events after reporting period [line items]
Consideration transferred, acquisition-date fair value						$ 16,500,000,000
Sitios Credit Facility [Member] | Subsequent Events [Member]
Disclosure of non-adjusting events after reporting period [line items]
Borrowings		$ 1,640,800,000	$ 20,558,500
Borrowings, maturity	2032	2023
Borrowings, interest rate	5.375%	13.32%
Proceeds from issue of bonds, notes and debentures	$ 1,000,000,000