v3.26.3
Document and Entity Information
Oct. 14, 2026
Entity Information [Line Items]  
Document Type 8-K
Document Period End Date Oct. 14, 2026
Entity Registrant Name AT&T INC.
Entity Incorporation State Country Code DE
Entity File Number 001-08610
Entity Tax Identification Number 43-1301883
Entity Address Address Line 1 208 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
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0000732717
Amendment Flag false
Depositary Shares, each representing a 1/1000th interest in a share of 5.000% Perpetual Preferred Stock, Series A [Member]  
Entity Information [Line Items]  
Security 12b Title Depositary Shares, each representing a 1/1000th interest in a share of 5.000% 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 [Member]  
Entity Information [Line Items]  
Security 12b Title Depositary Shares, each representing a 1/1000th interest in a share of 4.750% Perpetual Preferred Stock, Series C
Trading Symbol T PRC
Security Exchange Name NYSE
AT&T Inc. 1.800% Global Notes due September 5, 2026 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 1.800% Global Notes due September 5, 2026
Trading Symbol T26D
Security Exchange Name NYSE
AT&T Inc. 2.900% Global Notes due December 4, 2026 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 2.900% Global Notes due December 4, 2026
Trading Symbol T26A
Security Exchange Name NYSE
AT&T Inc. Floating Rate Global Notes due September 16, 2027 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. Floating Rate Global Notes due September 16, 2027
Trading Symbol T27C
Security Exchange Name NYSE
AT&T Inc. 1.600% Global Notes due May 19, 2028 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 1.600% Global Notes due May 19, 2028
Trading Symbol T28C
Security Exchange Name NYSE
AT&T Inc. Floating Rate Global Notes due August 17, 2028 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. Floating Rate Global Notes due August 17, 2028
Trading Symbol T28E
Security Exchange Name NYSE
AT&T Inc. 2.350% Global Notes due September 5, 2029 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 2.350% Global Notes due September 5, 2029
Trading Symbol T29D
Security Exchange Name NYSE
AT&T Inc. 4.375% Global Notes due September 14, 2029 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 4.375% Global Notes due September 14, 2029
Trading Symbol T29B
Security Exchange Name NYSE
AT&T Inc. 2.600% Global Notes due December 17, 2029 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 2.600% Global Notes due December 17, 2029
Trading Symbol T9A
Security Exchange Name NYSE
AT&T Inc. 0.800% Global Notes due March 4, 2030 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 0.800% Global Notes due March 4, 2030
Trading Symbol T30B
Security Exchange Name NYSE
AT&T Inc. 3.150% Global Notes due June 1, 2030 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 3.150% Global Notes due June 1, 2030
Trading Symbol T30C
Security Exchange Name NYSE
AT&T Inc. 3.600% Global Notes due August 3, 2030 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 3.600% Global Notes due August 3, 2030
Trading Symbol T30E
Security Exchange Name NYSE
AT&T Inc. 3.950% Global Notes due April 30, 2031 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 3.950% Global Notes due April 30, 2031
Trading Symbol T31F
Security Exchange Name NYSE
AT&T Inc. 2.050% Global Notes due May 19, 2032 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 2.050% Global Notes due May 19, 2032
Trading Symbol T32A
Security Exchange Name NYSE
AT&T Inc. 3.550% Global Notes due December 17, 2032 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 3.550% Global Notes due December 17, 2032
Trading Symbol T32
Security Exchange Name NYSE
AT&T Inc. 3.600% Global Notes due June 1, 2033 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 3.600% Global Notes due June 1, 2033
Trading Symbol T33A
Security Exchange Name NYSE
AT&T Inc. 5.200% Global Notes due November 18, 2033 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 5.200% Global Notes due November 18, 2033
Trading Symbol T33
Security Exchange Name NYSE
AT&T Inc. 3.375% Global Notes due March 15, 2034 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 3.375% Global Notes due March 15, 2034
Trading Symbol T34
Security Exchange Name NYSE
AT&T Inc. 4.150% Global Notes due August 3, 2034 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 4.150% Global Notes due August 3, 2034
Trading Symbol T34E
Security Exchange Name NYSE
AT&T Inc. 4.300% Global Notes due November 18, 2034 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 4.300% Global Notes due November 18, 2034
Trading Symbol T34C
Security Exchange Name NYSE
AT&T Inc. 2.450% Global Notes due March 15, 2035 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 2.450% Global Notes due March 15, 2035
Trading Symbol T35
Security Exchange Name NYSE
AT&T Inc. 3.150% Global Notes due September 4, 2036 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 3.150% Global Notes due September 4, 2036
Trading Symbol T36A
Security Exchange Name NYSE
AT&T Inc. 4.050% Global Notes due June 1, 2037 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 4.050% Global Notes due June 1, 2037
Trading Symbol T37B
Security Exchange Name NYSE
AT&T Inc. 2.600% Global Notes due May 19, 2038 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 2.600% Global Notes due May 19, 2038
Trading Symbol T38C
Security Exchange Name NYSE
AT&T Inc. 4.550% Global Notes due August 3, 2038 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 4.550% Global Notes due August 3, 2038
Trading Symbol T38D
Security Exchange Name NYSE
AT&T Inc. 1.800% Global Notes due September 14, 2039 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 1.800% Global Notes due September 14, 2039
Trading Symbol T39B
Security Exchange Name NYSE
AT&T Inc. 7.000% Global Notes due April 30, 2040 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 7.000% Global Notes due April 30, 2040
Trading Symbol T40
Security Exchange Name NYSE
AT&T Inc. 4.250% Global Notes due June 1, 2043 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 4.250% Global Notes due June 1, 2043
Trading Symbol T43
Security Exchange Name NYSE
AT&T Inc. 4.875% Global Notes due June 1, 2044 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 4.875% Global Notes due June 1, 2044
Trading Symbol T44
Security Exchange Name NYSE
AT&T Inc. 5.050% Global Notes due August 3, 2045 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 5.050% Global Notes due August 3, 2045
Trading Symbol T45B
Security Exchange Name NYSE
AT&T Inc. 4.000% Global Notes due June 1, 2049 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 4.000% Global Notes due June 1, 2049
Trading Symbol T49A
Security Exchange Name NYSE
AT&T Inc. 4.250% Global Notes due March 1, 2050 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 4.250% Global Notes due March 1, 2050
Trading Symbol T50
Security Exchange Name NYSE
AT&T Inc. 3.750% Global Notes due September 1, 2050 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 3.750% Global Notes due September 1, 2050
Trading Symbol T50A
Security Exchange Name NYSE
AT&T Inc. 7.050% Global Notes due August 3, 2052 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 7.050% Global Notes due August 3, 2052
Trading Symbol T52
Security Exchange Name NYSE
AT&T Inc. 5.350% Global Notes due November 1, 2066 [Member]  
Entity Information [Line Items]  
Security 12b Title AT&T Inc. 5.350% Global Notes due November 1, 2066
Trading Symbol TBB
Security Exchange Name NYSE
New York Stock Exchange [Member] | Common Shares (Par Value $1.00 Per Share) [Member]  
Entity Information [Line Items]  
Security 12b Title Common Shares (Par Value $1.00 Per Share)
Trading Symbol T
Security Exchange Name NYSE
NYSE Texas [Member] | Common Shares (Par Value $1.00 Per Share) [Member]  
Entity Information [Line Items]  
Security 12b Title Common Shares (Par Value $1.00 Per Share)
Trading Symbol T
Security Exchange Name CHX