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Area code of city

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End date of current fiscal year in the format --MM-DD.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Subsection f

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Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.

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Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

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The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.

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The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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Indicates that the company is a Smaller Reporting Company (SRC).

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The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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Indicate 'Yes' or 'No' if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.

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Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A.

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Local phone number for entity.

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No definition available.

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Title of a 12(b) registered security.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Name of the Exchange on which a security is registered.

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Trading symbol of an instrument as listed on an exchange.

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Document and Entity Information - USD ($) $ in Billions	12 Months Ended
Document and Entity Information - USD ($) $ in Billions	Dec. 31, 2022	Feb. 08, 2023	Jun. 30, 2022
Entity Listings [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-8610
Entity Registrant Name	AT&T INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	43-1301883
Entity Address, Address Line One	208 S. Akard St.
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75202
City Area Code	210
Local Phone Number	821-4105
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 149
Entity Common Stock, Shares Outstanding		7,129,870,323
Documents Incorporated by Reference	Portions of AT&T Inc.’s Notice of 2022 Annual Meeting and Proxy Statement dated on or about April 3, 2023 to be filed within the period permitted under General Instruction G(3) (Part III).
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity Central Index Key	0000732717
Common Shares (Par Value $1.00 Per Share)
Entity Listings [Line Items]
Title of 12(b) Security	Common Shares (Par Value $1.00 Per Share)
Trading Symbol	T
Security Exchange Name	NYSE
Depositary Shares, each representing a 1/1000th interest in a share of 5.000% Perpetual Preferred Stock, Series A
Entity Listings [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/1000th interest in a share of5.000% Perpetual Preferred Stock, Series A
Trading Symbol	T PRA
Security Exchange Name	NYSE
Depositary Shares, each representing a 1/1000th interest in a share of 4.750% Perpetual Preferred Stock, Series C
Entity Listings [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/1000th interest in a share of4.750% Perpetual Preferred Stock, Series C
Trading Symbol	T PRC
Security Exchange Name	NYSE
AT&T Inc. 2.500% Global Notes due March 15, 2023
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.500% Global Notes due March 15, 2023
Trading Symbol	T 23
Security Exchange Name	NYSE
AT&T Inc. 2.750% Global Notes due May 19, 2023
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.750% Global Notes due May 19, 2023
Trading Symbol	T 23C
Security Exchange Name	NYSE
AT&T Inc. Floating Rate Global Notes due September 5, 2023
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. Floating Rate Global Notes due September 5, 2023
Trading Symbol	T 23D
Security Exchange Name	NYSE
AT&T Inc. 1.050% Global Notes due September 5, 2023
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.050% Global Notes due September 5, 2023
Trading Symbol	T 23E
Security Exchange Name	NYSE
AT&T Inc. 1.300% Global Notes due September 5, 2023
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.300% Global Notes due September 5, 2023
Trading Symbol	T 23A
Security Exchange Name	NYSE
AT&T Inc. 1.950% Global Notes due September 15, 2023
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.950% Global Notes due September 15, 2023
Trading Symbol	T 23F
Security Exchange Name	NYSE
AT&T Inc. 2.400% Global Notes due March 15, 2024
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.400% Global Notes due March 15, 2024
Trading Symbol	T 24A
Security Exchange Name	NYSE
AT&T Inc. 3.500% Global Notes due December 17, 2025
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 3.500% Global Notes due December 17, 2025
Trading Symbol	T 25
Security Exchange Name	NYSE
AT&T Inc. 0.250% Global Notes due March 4, 2026
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 0.250% Global Notes due March 4, 2026
Trading Symbol	T 26E
Security Exchange Name	NYSE
AT&T Inc. 1.800% Global Notes due September 5, 2026
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.800% Global Notes due September 5, 2026
Trading Symbol	T 26D
Security Exchange Name	NYSE
AT&T Inc. 2.900% Global Notes due December 4, 2026
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.900% Global Notes due December 4, 2026
Trading Symbol	T 26A
Security Exchange Name	NYSE
AT&T Inc. 1.600% Global Notes due May 19, 2028
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.600% Global Notes due May 19, 2028
Trading Symbol	T 28C
Security Exchange Name	NYSE
AT&T Inc. 2.350% Global Notes due September 5, 2029
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.350% Global Notes due September 5, 2029
Trading Symbol	T 29D
Security Exchange Name	NYSE
AT&T Inc. 4.375% Global Notes due September 14, 2029
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 4.375% Global Notes due September 14, 2029
Trading Symbol	T 29B
Security Exchange Name	NYSE
AT&T Inc. 2.600% Global Notes due December 17, 2029
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.600% Global Notes due December 17, 2029
Trading Symbol	T 29A
Security Exchange Name	NYSE
AT&T Inc. 0.800% Global Notes due March 4, 2030
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 0.800% Global Notes due March 4, 2030
Trading Symbol	T 30B
Security Exchange Name	NYSE
AT&T Inc. 2.050% Global Notes due May 19, 2032
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.050% Global Notes due May 19, 2032
Trading Symbol	T 32A
Security Exchange Name	NYSE
AT&T Inc. 3.550% Global Notes due December 17, 2032
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 3.550% Global Notes due December 17, 2032
Trading Symbol	T 32
Security Exchange Name	NYSE
AT&T Inc. 5.200% Global Notes due November 18, 2033
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 5.200% Global Notes due November 18, 2033
Trading Symbol	T 33
Security Exchange Name	NYSE
AT&T Inc. 3.375% Global Notes due March 15, 2034
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 3.375% Global Notes due March 15, 2034
Trading Symbol	T 34
Security Exchange Name	NYSE
AT&T Inc. 2.450% Global Notes due March 15, 2035
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.450% Global Notes due March 15, 2035
Trading Symbol	T 35
Security Exchange Name	NYSE
AT&T Inc. 3.150% Global Notes due September 4, 2036
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 3.150% Global Notes due September 4, 2036
Trading Symbol	T 36A
Security Exchange Name	NYSE
AT&T Inc. 2.600% Global Notes due May 19, 2038
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.600% Global Notes due May 19, 2038
Trading Symbol	T 38C
Security Exchange Name	NYSE
AT&T Inc. 1.800% Global Notes due September 14, 2039
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.800% Global Notes due September 14, 2039
Trading Symbol	T 39B
Security Exchange Name	NYSE
AT&T Inc. 7.000% Global Notes due April 30, 2040
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 7.000% Global Notes due April 30, 2040
Trading Symbol	T 40
Security Exchange Name	NYSE
AT&T Inc. 4.250% Global Notes due June 1, 2043
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 4.250% Global Notes due June 1, 2043
Trading Symbol	T 43
Security Exchange Name	NYSE
AT&T Inc. 4.875% Global Notes due June 1, 2044
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 4.875% Global Notes due June 1, 2044
Trading Symbol	T 44
Security Exchange Name	NYSE
AT&T Inc. 4.000% Global Notes due June 1, 2049
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 4.000% Global Notes due June 1, 2049
Trading Symbol	T 49A
Security Exchange Name	NYSE
AT&T Inc. 4.250% Global Notes due March 1, 2050
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 4.250% Global Notes due March 1, 2050
Trading Symbol	T 50
Security Exchange Name	NYSE
AT&T Inc. 3.750% Global Notes due September 1, 2050
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 3.750% Global Notes due September 1, 2050
Trading Symbol	T50A
Security Exchange Name	NYSE
AT&T Inc. 5.350% Global Notes due November 1, 2066
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 5.350% Global Notes due November 1, 2066
Trading Symbol	TBB
Security Exchange Name	NYSE
AT&T Inc. 5.625% Global Notes due August 1, 2067
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 5.625% Global Notes due August 1, 2067
Trading Symbol	TBC
Security Exchange Name	NYSE