AT&T (T) 10-Q 25 Jul 24 2024 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2024	Jul. 18, 2024
Entity Listings [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-08610
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 Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		7,170,243,877
Amendment Flag	false
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2024
Current Fiscal Year End Date	--12-31
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 ashare 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
Entity Listings [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/1000th interest in ashare of 4.750% Perpetual Preferred Stock, Series C
Trading Symbol	T PRC
Security Exchange Name	NYSE
AT&T Inc. Floating Rate Global Notes due March 6, 2025
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. Floating Rate Global Notes due March 6, 2025
Trading Symbol	T 25A
Security Exchange Name	NYSE
AT&T Inc. 3.550% Global Notes due November 18, 2025
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 3.550% Global Notes due November 18, 2025
Trading Symbol	T 25B
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. 3.950% Global Notes due April 30, 2031
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 3.950% Global Notes due April 30, 2031
Trading Symbol	T 31F
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. 4.300% Global Notes due November 18, 2034
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 4.300% Global Notes due November 18, 2034
Trading Symbol	T 34C
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	T 50A
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

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Operating Revenues
Total operating revenues	$ 29,797	$ 29,917	$ 59,825	$ 60,056
Cost of revenues
Other cost of revenues (exclusive of depreciation and amortization shown separately below)	6,627	6,771	13,438	13,444
Selling, general and administrative	7,043	7,009	14,064	14,184
Asset impairments and abandonments and restructuring	480	0	639	0
Depreciation and amortization	5,072	4,675	10,119	9,306
Total operating expenses	24,037	23,511	48,218	47,648
Operating Income	5,760	6,406	11,607	12,408
Other Income (Expense)
Interest expense	(1,699)	(1,608)	(3,423)	(3,316)
Equity in net income of affiliates	348	380	643	918
Other income (expense) — net	682	987	1,133	1,922
Total other income (expense)	(669)	(241)	(1,647)	(476)
Income Before Income Taxes	5,091	6,165	9,960	11,932
Income tax expense	1,142	1,403	2,260	2,717
Net Income	3,949	4,762	7,700	9,215
Less: Net Income Attributable to Noncontrolling Interest	(352)	(273)	(658)	(498)
Net Income Attributable to AT&T	3,597	4,489	7,042	8,717
Less: Preferred Stock Dividends	(51)	(52)	(101)	(104)
Net Income Attributable to Common Stock	$ 3,546	$ 4,437	$ 6,941	$ 8,613
Basic earnings per share attributable to Common Stock (in dollars per share)	$ 0.49	$ 0.61	$ 0.96	$ 1.19
Diluted earnings per share (in dollars per share)	$ 0.49	$ 0.61	$ 0.96	$ 1.19
Weighted Average Number of Common Shares Outstanding - Basic (in millions) (in shares)	7,196	7,180	7,194	7,174
Weighted Average Number of Common Shares Outstanding - with Dilution (in millions) (in shares)	7,198	7,180	7,195	7,327
Service
Operating Revenues
Total operating revenues	$ 25,006	$ 24,850	$ 49,848	$ 49,467
Equipment
Operating Revenues
Total operating revenues	4,791	5,067	9,977	10,589
Cost of revenues
Cost of goods and services sold	$ 4,815	$ 5,056	$ 9,958	$ 10,714

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 3,949	$ 4,762	$ 7,700	$ 9,215
Foreign currency:
Translation adjustment, net of taxes of $(69), $88, $(61) and $140	(221)	264	(192)	457
Reclassification adjustment included in net income, net of taxes of $(14), $0, $(14) and $0	127	0	127	0
Securities:
Net unrealized gains (losses), net of taxes of $1, $(4), $(1) and $4	(7)	(11)	(17)	12
Reclassification adjustment included in net income, net of taxes of $1, $1, $3 and $2	4	2	10	5
Derivative instruments:
Net unrealized gains (losses), net of taxes of $(65), $45, $(16) and $2	(260)	176	(49)	24
Reclassification adjustment included in net income, net of taxes of $4, $3, $7 and $6	10	11	22	23
Defined benefit postretirement plans:
Amortization of net prior service credit included in net income, net of taxes of $(123), $(161),$(246) and $(321)	(380)	(491)	(761)	(982)
Other comprehensive income (loss)	(727)	(49)	(860)	(461)
Total comprehensive income	3,222	4,713	6,840	8,754
Less: Total comprehensive income attributable to noncontrolling interest	(352)	(273)	(658)	(498)
Total Comprehensive Income Attributable to AT&T	$ 2,870	$ 4,440	$ 6,182	$ 8,256

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustments - tax effect	$ (69)	$ 88	$ (61)	$ 140
Foreign currency translation, reclassification adjustment, tax effect	14	0	14	0
Securities, available-for-sale, unrealized holding gain (loss), before adjustment, tax effect	1	(4)	(1)	4
Securities, available-for-sale, reclassification adjustment, tax effect	(1)	(1)	(3)	(2)
Derivativie instruments, cash flow hedge, gain (loss), before reclassification, tax effect	(65)	45	(16)	2
Derivative instruments, reclassification adjustment, tax effect	(4)	(3)	7	6
Defined benefit plan, prior service cost (credit), reclassification adjustment, tax effect	$ (123)	$ (161)	$ (246)	$ (321)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 3,093	$ 6,722
Accounts receivable – net of related allowances for credit loss of $443 and $499	9,686	10,289
Inventories	1,816	2,177
Prepaid and other current assets	15,273	17,270
Total current assets	29,868	36,458
Property, plant and equipment	342,607	339,891
Less: accumulated depreciation and amortization	(214,835)	(211,402)
Property, Plant and Equipment – Net	127,772	128,489
Goodwill – Net	67,854	67,854
Licenses – Net	127,279	127,219
Other Intangible Assets – Net	5,277	5,283
Investments in and Advances to Equity Affiliates	584	1,251
Operating Lease Right-Of-Use Assets	20,582	20,905
Other Assets	18,810	19,601
Total Assets	398,026	407,060
Current Liabilities
Debt maturing within one year	5,249	9,477
Accounts payable and accrued liabilities	31,173	35,852
Advanced billings and customer deposits	3,981	3,778
Dividends payable	2,026	2,020
Total current liabilities	42,429	51,127
Long-Term Debt	125,355	127,854
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	58,918	58,666
Postemployment benefit obligation	8,744	8,734
Operating lease liabilities	17,174	17,568
Other noncurrent liabilities	24,082	23,696
Total deferred credits and other noncurrent liabilities	108,918	108,664
Redeemable Noncontrolling Interest, Equity, Carrying Amount [Abstract]
Redeemable Noncontrolling Interest	1,977	1,973
Stockholders’ Equity
Common stock ($1 par value, 14,000,000,000 authorized at June 30, 2024 and December 31, 2023: issued 7,620,748,598 at June 30, 2024 and December 31, 2023)	7,621	7,621
Additional paid-in capital	111,515	114,519
Retained earnings (deficit)	2	(5,015)
Treasury stock (450,513,074 at June 30, 2024 and 470,685,237 at December 31, 2023, at cost)	(15,268)	(16,128)
Accumulated other comprehensive income	1,440	2,300
Noncontrolling interest	14,037	14,145
Total stockholders’ equity	119,347	117,442
Total Liabilities and Stockholders’ Equity	398,026	407,060
Series A (48,000 issued and outstanding at June 30, 2024 and December 31, 2023)
Stockholders’ Equity
Preferred stock ($1 par value, 10,000,000 authorized at June 30, 2024 and December 31, 2023):	0	0
Series B (20,000 issued and outstanding at June 30, 2024 and December 31, 2023)
Stockholders’ Equity
Preferred stock ($1 par value, 10,000,000 authorized at June 30, 2024 and December 31, 2023):	0	0
Series C (70,000 issued and outstanding at June 30, 2024 and December 31, 2023)
Stockholders’ Equity
Preferred stock ($1 par value, 10,000,000 authorized at June 30, 2024 and December 31, 2023):	$ 0	$ 0

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Allowances for doubtful accounts	$ 443	$ 499
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, authorized (in shares)	10,000,000	10,000,000
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	14,000,000,000	14,000,000,000
Common stock, issued (in shares)	7,620,748,598	7,620,748,598
Treasury stock, held (in shares)	450,513,074	470,685,237
Preferred Stock - Series A
Preferred stock, issued (in shares)	48,000	48,000
Preferred stock, outstanding (in shares)	48,000	48,000
Preferred Stock - Series B
Preferred stock, issued (in shares)	20,000	20,000
Preferred stock, outstanding (in shares)	20,000	20,000
Preferred Stock - Series C
Preferred stock, issued (in shares)	70,000	70,000
Preferred stock, outstanding (in shares)	70,000	70,000

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating Activities
Net income	$ 7,700	$ 9,215
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,119	9,306
Provision for uncollectible accounts	942	929
Deferred income tax expense	1,203	1,836
Net (gain) loss on investments, net of impairments	185	(160)
Actuarial and settlement (gain) loss on pension and postretirement benefits - net	0	74
Pension and postretirement benefit expense (credit)	(941)	(1,341)
Asset impairments and abandonments and restructuring	639	0
Changes in operating assets and liabilities:
Receivables	130	1,342
Other current assets	1,149	1,106
Accounts payable and other accrued liabilities	(4,831)	(5,769)
Equipment installment receivables and related sales	(320)	(302)
Deferred customer contract acquisition and fulfillment costs	294	34
Postretirement claims and contributions	(93)	(556)
Other - net	464	1,034
Total adjustments	8,940	7,385
Net Cash Provided by Operating Activities	16,640	16,600
Investing Activities
Capital expenditures	(8,118)	(8,605)
Acquisitions, net of cash acquired	(270)	(515)
Dispositions	14	16
Distributions from DIRECTV in excess of cumulative equity in earnings	586	974
(Purchases), sales and settlements of securities and investments, net	1,147	(1,056)
Other - net	(336)	(55)
Net Cash Used in Investing Activities	(6,977)	(9,241)
Financing Activities
Net change in short-term borrowings with original maturities of three months or less	2,686	(914)
Issuance of other short-term borrowings	491	5,406
Repayment of other short-term borrowings	(2,487)	(867)
Issuance of long-term debt	2	9,633
Repayment of long-term debt	(6,910)	(7,609)
Repayment of note payable to DIRECTV	0	(130)
Payment of vendor financing	(1,391)	(3,756)
Purchase of treasury stock	(159)	(189)
Issuance of treasury stock	0	3
Issuance of preferred interests in subsidiary	0	7,151
Redemption of preferred interests in subsidiary	0	(5,333)
Dividends paid	(4,133)	(4,097)
Other - net	(1,392)	(828)
Net Cash Used in Financing Activities	(13,293)	(1,530)
Net increase (decrease) in cash and cash equivalents and restricted cash	(3,630)	5,829
Cash and cash equivalents and restricted cash beginning of year	6,833	3,793
Cash and Cash Equivalents and Restricted Cash End of Period	$ 3,203	$ 9,622

Consolidated Statement Of Chang

Consolidated Statement Of Changes In Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Preferred Stock Preferred Stock - Series A	Preferred Stock Preferred Stock - Series B	Preferred Stock Preferred Stock - Series C	Common Stock	Additional Paid-In Capital	Retained Earnings (Deficit)	Treasury stock, held (in shares)	Accumulated Other Comprehensive Income Attributable to AT&T, net of tax	Noncontrolling Interest1
Balance at beginning of period at Dec. 31, 2022	$ 106,457	$ 0	$ 0	$ 0	$ 7,621	$ 123,610	$ (19,415)	$ (17,082)	$ 2,766	$ 8,957
Balance at beginning of period (in shares) at Dec. 31, 2022		0	0	0	7,621			(493)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase and acquisition of common stock								$ (189)
Repurchase and acquisition of common stock (in shares)								(10)
Issuance/reissuance of treasury stock						(368)		$ (1,113)
Issuance/reissuance of treasury stock (in shares)								32
Share-based payments						(274)
Redemption or reclassification of interest held by noncontrolling owners						0
Net income attributable to AT&T	8,717						8,717
Preferred stock dividends						(134)	0
Dividends, Common Stock, Cash						(4,001)	0
Other comprehensive income (loss) attributable to AT&T	(461)								(461)
Net income attributable to noncontrolling interest	498									492
Issuance and acquisition by noncontrolling owners										5,181
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests										0
Distributions										(458)
Balance at end of period at Jun. 30, 2023	116,075	$ 0	$ 0	$ 0	$ 7,621	118,833	(10,698)	$ (16,158)	2,305	14,172
Balance at end of period (in shares) at Jun. 30, 2023		0	0	0	7,621			(471)
Balance at beginning of period at Mar. 31, 2023	108,346	$ 0	$ 0	$ 0	$ 7,621	120,774	(15,187)	$ (16,166)	2,354	8,950
Balance at beginning of period (in shares) at Mar. 31, 2023		0	0	0	7,621			(472)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase and acquisition of common stock								$ (1)
Repurchase and acquisition of common stock (in shares)								0
Issuance/reissuance of treasury stock						(3)		$ (9)
Issuance/reissuance of treasury stock (in shares)								1
Share-based payments						(97)
Redemption or reclassification of interest held by noncontrolling owners						0
Net income attributable to AT&T	4,489						4,489
Preferred stock dividends						(36)	0
Dividends, Common Stock, Cash						(1,999)	0
Other comprehensive income (loss) attributable to AT&T									(49)
Net income attributable to noncontrolling interest	273									267
Issuance and acquisition by noncontrolling owners										5,181
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests										0
Distributions										(226)
Balance at end of period at Jun. 30, 2023	116,075	$ 0	$ 0	$ 0	$ 7,621	118,833	(10,698)	$ (16,158)	2,305	14,172
Balance at end of period (in shares) at Jun. 30, 2023		0	0	0	7,621			(471)
Balance at beginning of period at Dec. 31, 2023	117,442	$ 0	$ 0	$ 0	$ 7,621	114,519	(5,015)	$ (16,128)	2,300	14,145
Balance at beginning of period (in shares) at Dec. 31, 2023		0	0	0	7,621			(471)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase and acquisition of common stock								$ (159)
Repurchase and acquisition of common stock (in shares)								(9)
Issuance/reissuance of treasury stock						(416)		$ (1,019)
Issuance/reissuance of treasury stock (in shares)								29
Share-based payments						(183)
Redemption or reclassification of interest held by noncontrolling owners						(292)
Net income attributable to AT&T	7,042						7,042
Preferred stock dividends						(98)	(36)
Dividends, Common Stock, Cash						(2,015)	(1,989)
Other comprehensive income (loss) attributable to AT&T	(860)								(860)
Net income attributable to noncontrolling interest	658									587
Issuance and acquisition by noncontrolling owners										0
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests										(58)
Distributions										(637)
Balance at end of period at Jun. 30, 2024	119,347	$ 0	$ 0	$ 0	$ 7,621	111,515	2	$ (15,268)	1,440	14,037
Balance at end of period (in shares) at Jun. 30, 2024		0	0	0	7,621			(451)
Balance at beginning of period at Mar. 31, 2024	118,620	$ 0	$ 0	$ 0	$ 7,621	111,599	(1,570)	$ (15,277)	2,167	14,080
Balance at beginning of period (in shares) at Mar. 31, 2024		0	0	0	7,621			(451)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase and acquisition of common stock								$ (2)
Repurchase and acquisition of common stock (in shares)								0
Issuance/reissuance of treasury stock						(3)		$ (11)
Issuance/reissuance of treasury stock (in shares)								0
Share-based payments						(83)
Redemption or reclassification of interest held by noncontrolling owners						(152)
Net income attributable to AT&T	3,597						3,597
Preferred stock dividends						0	(36)
Dividends, Common Stock, Cash						(12)	(1,989)
Other comprehensive income (loss) attributable to AT&T									(727)
Net income attributable to noncontrolling interest	352									317
Issuance and acquisition by noncontrolling owners										0
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests										(41)
Distributions										(319)
Balance at end of period at Jun. 30, 2024	$ 119,347	$ 0	$ 0	$ 0	$ 7,621	$ 111,515	$ 2	$ (15,268)	$ 1,440	$ 14,037
Balance at end of period (in shares) at Jun. 30, 2024		0	0	0	7,621			(451)

Consolidated Statement Of Cha_2

Consolidated Statement Of Changes In Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Additional Paid-In Capital
Dividends to stockholders, per share (in dollars per share)	$ 0.2775	$ 0.2775	$ 0.5550	$ 0.5550
Retained Earnings (Deficit)
Dividends to stockholders, per share (in dollars per share)	$ 0.2775	$ 0	$ 0.2775	$ 0

Preparation Of Interim Financia

Preparation Of Interim Financial Statements	6 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Preparation Of Interim Financial Statements	NOTE 1. PREPARATION OF INTERIM FINANCIAL STATEMENTS Basis of Presentation Throughout this document, AT&T Inc. is referred to as “we,” “AT&T” or the “Company.” The consolidated financial statements include the accounts of the Company and subsidiaries and affiliates which we control. AT&T is a holding company whose subsidiaries and affiliates operate worldwide in the telecommunications and technology industries. You should read this document in conjunction with the consolidated financial statements and accompanying notes included in our Annual Report on Form 10-K for the year ended December 31, 2023. The results for the interim periods are not necessarily indicative of those for the full year. These consolidated financial statements include all adjustments that are necessary to present fairly the results for the presented interim periods, consisting of normal recurring accruals and other items. All significant intercompany transactions are eliminated in the consolidation process. Investments in subsidiaries and partnerships which we do not control but have significant influence are accounted for under the equity method. Earnings from certain investments accounted for using the equity method are included in our results on a one quarter lag. We also record our proportionate share of our equity method investees’ other comprehensive income (OCI) items, including translation adjustments.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 2. EARNINGS PER SHARE A reconciliation of the numerators and denominators of basic and diluted earnings per share is shown in the table below: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Numerators Numerator for basic earnings per share: Net Income Attributable to Common Stock $ 3,546 $ 4,437 $ 6,941 $ 8,613 Dilutive potential common shares: Mobility preferred interests — — — 72 Share-based payment — — — 7 Numerator for diluted earnings per share $ 3,546 $ 4,437 $ 6,941 $ 8,692 Denominators (000,000) Denominator for basic earnings per share: Weighted average number of common shares outstanding 7,196 7,180 7,194 7,174 Dilutive potential common shares: Mobility preferred interests (in shares) — — — 142 Share-based payment (in shares) 2 — 1 11 Denominator for diluted earnings per share 7,198 7,180 7,195 7,327 On April 5, 2023, we repurchased all our Series A Cumulative Perpetual Preferred Membership Interests in AT&T Mobility II LLC (Mobility preferred interests). For periods prior to repurchase, under Accounting Standards Update (ASU) No. 2020-06, “Debt—Debt With Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity” (ASU 2020-06), the ability to settle the Mobility preferred interests in stock was reflected in our diluted earnings per share calculation.

Other Comprehensive Income

Other Comprehensive Income	6 Months Ended
	Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income	NOTE 3. OTHER COMPREHENSIVE INCOME Changes in the balances of each component included in accumulated OCI are presented below. All amounts are net of tax. Foreign Currency Translation Adjustment Net Unrealized Gains (Losses) on Securities Net Unrealized Gains (Losses) on Derivative Instruments Defined Benefit Postretirement Plans Accumulated Other Comprehensive Income (Loss) Balance as of December 31, 2023 $ (1,337) $ (57) $ (1,029) $ 4,723 $ 2,300 Other comprehensive income (loss) before reclassifications (192) (17) (49) — (258) Amounts reclassified from accumulated OCI 127 1 10 1 22 2 (761) 3 (602) Net other comprehensive income (loss) (65) (7) (27) (761) (860) Balance as of June 30, 2024 $ (1,402) $ (64) $ (1,056) $ 3,962 $ 1,440 Foreign Currency Translation Adjustment Net Unrealized Gains (Losses) on Securities Net Unrealized Gains (Losses) on Derivative Instruments Defined Benefit Postretirement Plans Accumulated Other Comprehensive Income (Loss) Balance as of December 31, 2022 $ (1,800) $ (90) $ (1,998) $ 6,654 $ 2,766 Other comprehensive income (loss) before reclassifications 457 12 24 — 493 Amounts reclassified from accumulated OCI — 1 5 1 23 2 (982) 3 (954) Net other comprehensive income (loss) 457 17 47 (982) (461) Balance as of June 30, 2023 $ (1,343) $ (73) $ (1,951) $ 5,672 $ 2,305 1 (Gains) losses are included in “Other income (expense) - net” in the consolidated statements of income. 2 (Gains) losses are primarily included in “Interest expense” in the consolidated statements of income (see Note 7). 3 The amortization of prior service credits associated with postretirement benefits are included in “Other income (expense) - net” in the consolidated statements of income (see Note 6).

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Segment Information	NOTE 4. SEGMENT INFORMATION Our segments are comprised of strategic business units or other operations that offer products and services to different customer segments over various technology platforms and/or in different geographies that are managed accordingly. We have two reportable segments: Communications and Latin America. We also evaluate segment and business unit performance based on EBITDA and/or EBITDA margin, which is defined as operating income excluding depreciation and amortization. EBITDA is used as part of our management reporting and we believe EBITDA to be a relevant and useful measurement to our investors as it measures the cash generation potential of our business units. EBITDA does not give effect to depreciation and amortization expenses incurred in operating income nor is it burdened by cash used for debt service requirements and thus does not reflect available funds for distributions, reinvestment or other discretionary uses. EBITDA margin is EBITDA divided by total revenue. The Communications segment provides wireless and wireline telecom and broadband services to consumers located in the U.S. and businesses globally. Our business strategies reflect integrated product offerings that cut across product lines and utilize shared assets. This segment contains the following business units: • Mobility provides nationwide wireless service and equipment. • Business Wireline provides advanced ethernet-based fiber services, IP Voice and managed professional services, as well as traditional voice and data services and related equipment to business customers. In the first quarter of 2024, we began offering our fixed wireless access product that provides internet services delivered over our 5G wireless network where available. • Consumer Wireline provides broadband services, including fiber connections that provide multi-gig services to residential customers in select locations and our fixed wireless access product that provides home internet services delivered over our 5G wireless network where available. Consumer Wireline also provides legacy telephony voice communication services. The Latin America segment provides wireless services and equipment in Mexico. Corporate and Other reconciles our segment results to consolidated operating income and income before income taxes. Corporate includes : • DTV-related retained costs , which are costs previously allocated to the Video business that were retained after the transaction, net of reimbursements from DIRECTV Entertainment Holdings, LLC (DIRECTV) under transition service agreements. • Parent administration support , which includes costs borne by AT&T where the business units do not influence decision making. • Securitization fees associated with our sales of receivables (see Note 8). • Value portfolio , which are businesses no longer integral to our operations or which we no longer actively market. Other items consist of : • Certain significant items , which includes items associated with the merger and integration of acquired or divested businesses, including amortization of intangible assets, employee separation charges associated with voluntary and/or strategic offers, asset impairments and abandonments and restructuring, and other items for which the segments are not being evaluated. “Interest expense” and “Other income (expense) – net” are managed only on a total company basis and are, accordingly, reflected only in consolidated results. For the three months ended June 30, 2024 Revenues Operations EBITDA Depreciation Operating Communications Mobility $ 20,480 $ 11,285 $ 9,195 $ 2,476 $ 6,719 Business Wireline 4,755 3,267 1,488 1,386 102 Consumer Wireline 3,347 2,249 1,098 914 184 Total Communications 28,582 16,801 11,781 4,776 7,005 Latin America - Mexico 1,103 925 178 172 6 Segment Total 29,685 17,726 11,959 4,948 7,011 Corporate and Other Corporate: DTV-related retained costs — 116 (116) 102 (218) Parent administration support — 443 (443) 2 (445) Securitization fees 29 150 (121) — (121) Value portfolio 83 25 58 5 53 Total Corporate 112 734 (622) 109 (731) Certain significant items — 505 (505) 15 (520) Total Corporate and Other 112 1,239 (1,127) 124 (1,251) AT&T Inc. $ 29,797 $ 18,965 $ 10,832 $ 5,072 $ 5,760 For the three months ended June 30, 2023 Revenues Operations and Support Expenses EBITDA Depreciation and Amortization Operating Income (Loss) Communications Mobility $ 20,315 $ 11,579 $ 8,736 $ 2,123 $ 6,613 Business Wireline 5,279 3,550 1,729 1,333 396 Consumer Wireline 3,251 2,226 1,025 857 168 Total Communications 28,845 17,355 11,490 4,313 7,177 Latin America - Mexico 967 821 146 185 (39) Segment Total 29,812 18,176 11,636 4,498 7,138 Corporate and Other Corporate: DTV-related retained costs — 178 (178) 152 (330) Parent administration support (3) 332 (335) 2 (337) Securitization fees 17 154 (137) — (137) Value portfolio 91 24 67 6 61 Total Corporate 105 688 (583) 160 (743) Certain significant items — (28) 28 17 11 Total Corporate and Other 105 660 (555) 177 (732) AT&T Inc. $ 29,917 $ 18,836 $ 11,081 $ 4,675 $ 6,406 For the six months ended June 30, 2024 Revenues Operations EBITDA Depreciation Operating Communications Mobility $ 41,074 $ 22,924 $ 18,150 $ 4,963 $ 13,187 Business Wireline 9,668 6,754 2,914 2,748 166 Consumer Wireline 6,697 4,505 2,192 1,795 397 Total Communications 57,439 34,183 23,256 9,506 13,750 Latin America - Mexico 2,166 1,808 358 349 9 Segment Total 59,605 35,991 23,614 9,855 13,759 Corporate and Other Corporate: DTV-related retained costs — 250 (250) 222 (472) Parent administration support — 835 (835) 3 (838) Securitization fees 55 315 (260) — (260) Value portfolio 165 51 114 9 105 Total Corporate 220 1,451 (1,231) 234 (1,465) Certain significant items — 657 (657) 30 (687) Total Corporate and Other 220 2,108 (1,888) 264 (2,152) AT&T Inc. $ 59,825 $ 38,099 $ 21,726 $ 10,119 $ 11,607 For the six months ended June 30, 2023 Revenues Operations and Support Expenses EBITDA Depreciation and Amortization Operating Income (Loss) Communications Mobility $ 40,897 $ 23,792 $ 17,105 $ 4,221 $ 12,884 Business Wireline 10,610 7,173 3,437 2,663 774 Consumer Wireline 6,490 4,510 1,980 1,718 262 Total Communications 57,997 35,475 22,522 8,602 13,920 Latin America - Mexico 1,850 1,559 291 360 (69) Segment Total 59,847 37,034 22,813 8,962 13,851 Corporate and Other Corporate: DTV-related retained costs — 347 (347) 296 (643) Parent administration support (12) 706 (718) 3 (721) Securitization fees 36 275 (239) — (239) Value portfolio 185 52 133 11 122 Total Corporate 209 1,380 (1,171) 310 (1,481) Certain significant items — (72) 72 34 38 Total Corporate and Other 209 1,308 (1,099) 344 (1,443) AT&T Inc. $ 60,056 $ 38,342 $ 21,714 $ 9,306 $ 12,408 The following table is a reconciliation of Segment Operating Income to “Income Before Income Taxes” reported in our consolidated statements of income: Three months ended Six months ended 2024 2023 2024 2023 Communications $ 7,005 $ 7,177 $ 13,750 $ 13,920 Latin America 6 (39) 9 (69) Segment Operating Income 7,011 7,138 13,759 13,851 Reconciling Items: Corporate (731) (743) (1,465) (1,481) Transaction and other costs (35) — (67) — Amortization of intangibles acquired (15) (17) (30) (34) Asset impairments and abandonments and restructuring (480) — (639) — Benefit-related gains (losses) 10 28 49 72 AT&T Operating Income 5,760 6,406 11,607 12,408 Interest expense 1,699 1,608 3,423 3,316 Equity in net income of affiliates 348 380 643 918 Other income (expense) — net 682 987 1,133 1,922 Income Before Income Taxes $ 5,091 $ 6,165 $ 9,960 $ 11,932

Revenue Recognition

Revenue Recognition	6 Months Ended
	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Revenue Recognition	NOTE 5. REVENUE RECOGNITION Revenue Categories The following tables set forth reported revenue by category and by business unit: For the three months ended June 30, 2024 Communications Mobility Business Wireline Consumer Wireline Latin America Corporate & Other Total Wireless service $ 16,277 $ — $ — $ 699 $ — $ 16,976 Business service — 4,571 — — — 4,571 Broadband — — 2,741 — — 2,741 Legacy voice and data — — 323 — 62 385 Other — — 283 — 50 333 Total Service 16,277 4,571 3,347 699 112 25,006 Equipment 4,203 184 — 404 — 4,791 Total $ 20,480 $ 4,755 $ 3,347 $ 1,103 $ 112 $ 29,797 For the three months ended June 30, 2023 Communications Mobility Business Wireline Consumer Wireline Latin America Corporate & Other Total Wireless service $ 15,745 $ — $ — $ 635 $ — $ 16,380 Business service — 5,114 — — — 5,114 Broadband — — 2,561 — — 2,561 Legacy voice and data — — 383 — 80 463 Other — — 307 — 25 332 Total Service 15,745 5,114 3,251 635 105 24,850 Equipment 4,570 165 — 332 — 5,067 Total $ 20,315 $ 5,279 $ 3,251 $ 967 $ 105 $ 29,917 For the six months ended June 30, 2024 Communications Mobility Business Wireline Consumer Wireline Latin America Corporate & Other Total Wireless service $ 32,271 $ — $ — $ 1,389 $ — $ 33,660 Business service — 9,271 — — — 9,271 Broadband — — 5,463 — — 5,463 Legacy voice and data — — 665 — 124 789 Other — — 569 — 96 665 Total Service 32,271 9,271 6,697 1,389 220 49,848 Equipment 8,803 397 — 777 — 9,977 Total $ 41,074 $ 9,668 $ 6,697 $ 2,166 $ 220 $ 59,825 For the six months ended June 30, 2023 Communications Mobility Business Wireline Consumer Wireline Latin America Corporate & Other Total Wireless service $ 31,228 $ — $ — $ 1,226 $ — $ 32,454 Business service — 10,314 — — — 10,314 Broadband — — 5,088 — — 5,088 Legacy voice and data — — 779 — 163 942 Other — — 623 — 46 669 Total Service 31,228 10,314 6,490 1,226 209 49,467 Equipment 9,669 296 — 624 — 10,589 Total $ 40,897 $ 10,610 $ 6,490 $ 1,850 $ 209 $ 60,056 Deferred Customer Contract Acquisition and Fulfillment Costs Costs to acquire and fulfill customer contracts, including commissions on service activations for our Mobility, Business Wireline and Consumer Wireline services, are deferred and amortized over the contract period or expected customer relationship life, which typically ranges from three years to five years. The following table presents the deferred customer contract acquisition and fulfillment costs included on our consolidated balance sheets: June 30, December 31, Consolidated Balance Sheets 2024 2023 Deferred Acquisition Costs Prepaid and other current assets $ 3,176 $ 3,233 Other Assets 4,087 4,077 Total deferred customer contract acquisition costs $ 7,263 $ 7,310 Deferred Fulfillment Costs Prepaid and other current assets $ 2,213 $ 2,340 Other Assets 3,533 3,843 Total deferred customer contract fulfillment costs $ 5,746 $ 6,183 The following table presents deferred customer contract acquisition and fulfillment cost amortization, which are primarily included in “Selling, general and administrative” and “Other cost of revenues,” respectively, for the six months ended: June 30, June 30, Consolidated Statements of Income 2024 2023 Deferred acquisition cost amortization $ 1,808 $ 1,688 Deferred fulfillment cost amortization 1,294 1,353 Contract Assets and Liabilities A contract asset is recorded when revenue is recognized in advance of our right to bill and receive consideration. The contract asset will decrease as services are provided and billed. For example, when installment sales include promotional discounts (e.g., trade-in device credits) the difference between revenue recognized and consideration received is recorded as a contract asset to be amortized over the contract term. Our contract assets primarily relate to our wireless businesses. Promotional equipment sales where we offer handset credits, which are allocated between equipment and service in proportion to their standalone selling prices, when customers commit to a specified service period result in additional contract assets recognized. These contract assets will amortize over the service contract period, resulting in lower future service revenue. When consideration is received in advance of the delivery of goods or services, a contract liability is recorded. Reductions in the contract liability will be recorded as we satisfy the performance obligations. The following table presents contract assets and liabilities on our consolidated balance sheets: June 30, December 31, Consolidated Balance Sheets 2024 2023 Contract asset $ 6,492 $ 6,518 Current portion in “Prepaid and other current assets” 3,661 3,549 Contract liability 4,155 3,994 Current portion in “Advanced billings and customer deposits” 3,857 3,666 Our beginning of period contract liability recorded as customer contract revenue during 2024 was $3,142. Remaining Performance Obligations Remaining performance obligations represent services we are required to provide to customers under bundled or discounted arrangements, which are satisfied as services are provided over the contract term. In determining the transaction price allocated, we do not include non-recurring charges and estimates for usage, nor do we consider arrangements with an original expected duration of less than one year, which are primarily prepaid wireless and residential internet agreements. Remaining performance obligations associated with business contracts reflect recurring charges billed, adjusted to reflect estimates for sales incentives and revenue adjustments. Performance obligations associated with wireless contracts are estimated using a portfolio approach in which we review all relevant promotional activities, calculating the remaining performance obligation using the average service component for the portfolio and the average device price. As of June 30, 2024, the aggregate amount of the transaction price allocated to remaining performance obligations was $38,744, of which we expect to recognize approximately 72% by the end of 2025, with the balance recognized thereafter.

Pension And Postretirement Bene

Pension And Postretirement Benefits	6 Months Ended
	Jun. 30, 2024
Retirement Benefits [Abstract]
Pension And Postretirement Benefits	NOTE 6. PENSION AND POSTRETIREMENT BENEFITS Many of our employees are covered by one of our noncontributory pension plans. We also provide certain medical, dental, life insurance and death benefits to certain retired employees under various plans and accrue actuarially determined postretirement benefit costs. Our objective in funding these plans, in combination with the standards of the Employee Retirement Income Security Act of 1974, as amended (ERISA), is to accumulate assets sufficient to provide benefits described in the plans to employees upon their retirement. We do not have significant funding requirements in 2024. We recognize actuarial gains and losses on pension and postretirement plan assets in our consolidated results as a component of “Other income (expense) – net” at our annual measurement date of December 31, unless earlier remeasurements are required. The following table details qualified pension and postretirement benefit costs included in the accompanying consolidated statements of income. The service cost component of net periodic pension (credit) cost is recorded in operating expenses in the consolidated statements of income while the remaining components are recorded in “Other income (expense) – net.” Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Pension cost: Service cost – benefits earned during the period $ 121 $ 122 $ 243 $ 243 Interest cost on projected benefit obligation 397 516 793 1,032 Expected return on assets (552) (715) (1,105) (1,429) Amortization of prior service credit (22) (34) (44) (67) Net pension (credit) cost before remeasurement (56) (111) (113) (221) Actuarial (gain) loss — 289 — 289 Settlement (gain) loss — (363) — (363) Net pension (credit) cost $ (56) $ (185) $ (113) $ (295) Postretirement cost: Service cost – benefits earned during the period $ 6 $ 6 $ 11 $ 12 Interest cost on accumulated postretirement benefit obligation 78 85 155 170 Expected return on assets (16) (33) (30) (66) Amortization of prior service credit (482) (618) (964) (1,236) Net postretirement (credit) cost $ (414) $ (560) $ (828) $ (1,120) Combined net pension and postretirement (credit) cost $ (470) $ (745) $ (941) $ (1,415) We also provide senior- and middle-management employees with nonqualified, unfunded supplemental retirement and savings plans. Net supplemental pension benefits costs not included in the table above were $16 and $18 in the second quarter and $33 and $37 for the first six months of 2024 and 2023, respectively.

Fair Value Measurements And Dis

Fair Value Measurements And Disclosure	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurements And Disclosure	NOTE 7. FAIR VALUE MEASUREMENTS AND DISCLOSURE The Fair Value Measurement and Disclosure framework in ASC 820, “Fair Value Measurement,” provides a three-tiered fair value hierarchy based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs and Level 3 includes fair values estimated using significant unobservable inputs. The level of an asset or liability within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Our valuation techniques maximize the use of observable inputs and minimize the use of unobservable inputs. The valuation methodologies described above may produce a fair value calculation that may not be indicative of future net realizable value or reflective of future fair values. We believe our valuation methods are appropriate and consistent with other market participants. The use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date. There have been no changes in the methodologies used since December 31, 2023. Long-Term Debt and Other Financial Instruments The carrying amounts and estimated fair values of our long-term debt, including current maturities, and other financial instruments are summarized as follows: June 30, 2024 December 31, 2023 Carrying Fair Carrying Fair Amount Value Amount Value Notes and debentures 1 $ 126,253 $ 117,290 $ 133,402 $ 128,474 Commercial paper 2,693 2,693 2,091 2,091 Investment securities 2 2,972 2,972 2,836 2,836 1 Includes credit agreement borrowings. 2 Excludes investments accounted for under the equity method. The carrying amount of debt with an original maturity of less than one year approximates fair value. The fair value measurements used for notes and debentures are considered Level 2 and are determined using various methods, including quoted prices for identical or similar securities in both active and inactive markets. Following is the fair value leveling for investment securities that are measured at fair value and derivatives as of June 30, 2024 and December 31, 2023. Derivatives designated as hedging instruments are reflected as “Prepaid and other current assets,” “Other Assets,” “Accounts payable and accrued liabilities,” and “Other noncurrent liabilities” on our consolidated balance sheets. June 30, 2024 Level 1 Level 2 Level 3 Total Equity Securities Domestic equities $ 1,087 $ — $ — $ 1,087 International equities 285 — — 285 Fixed income equities 208 — — 208 Available-for-Sale Debt Securities — 1,169 — 1,169 Asset Derivatives Cross-currency swaps — 121 — 121 Liability Derivatives Interest rate swaps — (1) — (1) Cross-currency swaps — (3,794) — (3,794) December 31, 2023 Level 1 Level 2 Level 3 Total Equity Securities Domestic equities $ 1,002 $ — $ — $ 1,002 International equities 215 — — 215 Fixed income equities 209 — — 209 Available-for-Sale Debt Securities — 1,228 — 1,228 Asset Derivatives Cross-currency swaps — 424 — 424 Liability Derivatives Interest rate swaps — (2) — (2) Cross-currency swaps — (3,601) — (3,601) Investment Securities Our investment securities include both equity and debt securities that are measured at fair value, as well as equity securities without readily determinable fair values. A substantial portion of the fair values of our investment securities is estimated based on quoted market prices. Investments in equity securities not traded on a national securities exchange are valued at cost, less any impairment, and adjusted for changes resulting from observable, orderly transactions for identical or similar securities. Investments in debt securities not traded on a national securities exchange are valued using pricing models, quoted prices of securities with similar characteristics or discounted cash flows. The components comprising total gains and losses in the period on equity securities are as follows: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Total gains (losses) recognized on equity securities $ 29 $ 82 $ 126 $ 165 Gains (losses) recognized on equity securities sold (5) (3) (8) 1 Unrealized gains (losses) recognized on equity securities held at end of period $ 34 $ 85 $ 134 $ 164 At June 30, 2024, available-for-sale debt securities totaling $1,169 have maturities as follows - less than one year: $62; one to three years: $192; three to five years: $116; five or more years: $799. Our cash equivalents (money market securities), short-term investments (certificate and time deposits) and nonrefundable customer deposits are recorded at amortized cost, and the respective carrying amounts approximate fair values. Short-term investments and nonrefundable customer deposits are recorded in “Prepaid and other current assets” and our investment securities are recorded in “Other Assets” on the consolidated balance sheets. Derivative Financial Instruments We enter into derivative transactions to manage certain market risks, primarily interest rate risk and foreign currency exchange risk. This includes the use of interest rate swaps, interest rate locks, foreign exchange forward contracts and combined interest rate foreign exchange contracts (cross-currency swaps). We do not use derivatives for trading or speculative purposes. We record derivatives on our consolidated balance sheets at fair value that is derived from observable market data, including yield curves and foreign exchange rates (all of our derivatives are Level 2). Cash flows associated with derivative instruments are presented in the same category on the consolidated statements of cash flows as the item being hedged. Fair Value Hedging Periodically, we enter into and designate fixed-to-floating interest rate swaps as fair value hedges. The purpose of these swaps is to manage interest rate risk by managing our mix of fixed-rate and floating-rate debt. These swaps involve the receipt of fixed-rate amounts for floating interest rate payments over the life of the swaps without exchange of the underlying principal amount. We also designate most of our cross-currency swaps and foreign exchange contracts as fair value hedges. The purpose of these contracts is to hedge foreign currency risk associated with changes in spot rates on foreign denominated debt. For cross-currency hedges, we have elected to exclude the change in fair value of the swap related to both time value and cross-currency basis spread from the assessment of hedge effectiveness. For foreign exchange contracts, we have elected to exclude the change in fair value of forward points from the assessment of hedge effectiveness. Unrealized and realized gains or losses from fair value hedges impact the same category on the consolidated statements of income as the item being hedged, including the earnings impact of excluded components. In instances where we have elected to exclude components from the assessment of hedge effectiveness related to fair value hedges, unrealized gains or losses on such excluded components are recorded as a component of accumulated OCI and recognized into earnings over the life of the hedging instrument. Unrealized gains on derivatives designated as fair value hedges are recorded at fair value as assets, and unrealized losses are recorded at fair market value as liabilities. Except for excluded components, changes in the fair value of derivative instruments designated as fair value hedges are offset against the change in fair value of the hedged assets or liabilities through earnings. In the six months ended June 30, 2024 and 2023, no ineffectiveness was measured on fair value hedges. Cash Flow Hedging We designate some of our cross-currency swaps as cash flow hedges to hedge our exposure to variability in expected future cash flows that are attributable to foreign currency risk and interest rate risk generated from our foreign-denominated debt. These agreements include initial and final exchanges of principal from fixed foreign denominated amounts to fixed U.S. dollar denominated amounts, to be exchanged at a specified rate that is usually determined by the market spot rate upon issuance. They also include an interest rate swap of a fixed or floating foreign denominated interest rate to a fixed U.S. dollar denominated interest rate. Unrealized gains on derivatives designated as cash flow hedges are recorded at fair value as assets and unrealized losses are recorded at fair value as liabilities. For derivative instruments designated as cash flow hedges, changes in fair value are reported as a component of accumulated OCI and are reclassified into the consolidated statements of income in the same period the hedged transaction affects earnings. Periodically, we enter into and designate interest rate locks to partially hedge the risk of changes in interest payments attributable to increases in the benchmark interest rate during the period leading up to the probable issuance of fixed-rate debt. We designate our interest rate locks as cash flow hedges. Gains and losses when we settle our interest rate locks are amortized into income over the life of the related debt. Over the next 12 months, we expect to reclassify $59 from accumulated OCI to “Interest expense” due to the amortization of net losses on historical interest rate locks. Collateral and Credit-Risk Contingency We have entered into agreements with our derivative counterparties establishing collateral thresholds based on respective credit ratings and netting agreements. At June 30, 2024, we had posted collateral of $680 (a deposit asset) and held collateral of $0 (a receipt liability). Under the agreements, if AT&T’s credit rating had been downgraded two ratings levels by Fitch Ratings, one level by S&P and one level by Moody’s before the final collateral exchange in June, we would have been required to post additional collateral of $50. If AT&T’s credit rating had been downgraded three ratings levels by Fitch Ratings, two levels by S&P, and two levels by Moody’s, we would have been required to post additional collateral of $3,594. At December 31, 2023, we had posted collateral of $670 (a deposit asset) and held collateral of $5 (a receipt liability). We do not offset the fair value of collateral, whether the right to reclaim cash collateral (a receivable) or the obligation to return cash collateral (a payable) exists, against the fair value of the derivative instruments. Following are the notional amounts of our outstanding derivative positions: June 30, December 31, 2024 2023 Interest rate swaps $ 1,750 $ 1,750 Cross-currency swaps 35,351 38,006 Total $ 37,101 $ 39,756 Following are the related hedged items affecting our financial position and performance: Effect of Derivatives on the Consolidated Statements of Income Three months ended Six months ended June 30, June 30, Fair Value Hedging Relationships 2024 2023 2024 2023 Interest rate swaps (“Interest expense”): Gain (loss) on interest rate swaps $ (1) $ (14) $ (1) $ (7) Gain (loss) on long-term debt 1 14 1 7 Cross-currency swaps: Gain (loss) on cross-currency swaps (178) 389 (424) 769 Gain (loss) on long-term debt 178 (389) 424 (769) Gain (loss) recognized in accumulated OCI (325) 222 (70) 40 Foreign exchange contracts: Gain (loss) on foreign exchange contracts — 4 — 11 Gain (loss) on long-term debt — (4) — (11) Gain (loss) recognized in accumulated OCI — (3) — (6) In addition, the net swap settlements that accrued and settled in the periods above were offset against “Interest expense.” The following table presents information for our cash flow hedging relationships: Three months ended Six months ended June 30, June 30, Cash Flow Hedging Relationships 2024 2023 2024 2023 Cross-currency swaps: Gain (loss) recognized in accumulated OCI $ — $ 2 $ 5 $ (8) Interest rate locks: Interest income (expense) reclassified from accumulated OCI into income (14) (14) (29) (29)

Sales Of Receivables

Sales Of Receivables	6 Months Ended
	Jun. 30, 2024
Receivables [Abstract]
Sales Of Receivables	NOTE 8. SALES OF RECEIVABLES We have agreements with various third-party financial institutions pertaining to the sales of certain types of our accounts receivable. The most significant of these programs are discussed in detail below and generally consist of (1) receivables arising from equipment installment plans, which are sold for cash and beneficial interests, such as deferred purchase price, when applicable, and (2) revolving trade receivables, which are sold for cash. Under the terms of our agreements for these programs, we continue to service the transferred receivables on behalf of the financial institutions. The following table sets forth a summary of cash proceeds received, net of remittances paid, from sales of receivables: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Net cash received (paid) from equipment installment receivables program 1 $ (674) $ (36) $ (553) $ (60) Net cash received (paid) from revolving receivables program (29) 1,000 247 1,000 Net cash received (paid) from other programs — (142) — (256) Total net cash impact to cash flows from operating activities 2 $ (703) $ 822 $ (306) $ 684 1 Cash from initial sales of $2,532 and $2,656 for the three months and $5,406 and $5,185 for the six months ended June 30, 2024 and 2023, respectively. 2 Net of facility fees. The sales of receivables did not have a material impact on our consolidated statements of income or to “Total Assets” reported on our consolidated balance sheets. We reflect cash receipts on sold receivables as cash flows from operations in our consolidated statements of cash flows. In the event cash is received on the beneficial interests, those receipts are classified as cash flows from investing activities, when applicable. Our equipment installment and revolving receivables programs are discussed in detail below. The following table sets forth a summary of the receivables and accounts being serviced: June 30, 2024 December 31, 2023 Equipment Equipment Installment Revolving Installment Revolving Gross receivables: $ 3,194 $ 1,260 $ 3,714 $ 924 Balance sheet classification Accounts receivable Notes receivable 1,581 — 1,695 — Trade receivables 651 1,260 548 924 Other Assets Noncurrent notes and trade receivables 962 — 1,471 — Outstanding portfolio of receivables derecognized from our consolidated balance sheets $ 12,210 $ 1,800 $ 12,027 $ 1,500 Cash proceeds received, net of remittances 1 8,947 1,800 9,361 1,500 1 Represents amounts to which financial institutions remain entitled, excluding the beneficial interests. Equipment Installment Receivables Program We offer our customers the option to purchase certain wireless devices in installments over a specified period of time and, in many cases, once certain conditions are met, they may be eligible to trade in the original equipment for a new device and have the remaining unpaid balance paid or settled. We maintain a program under which we transfer a portion of these receivables through our bankruptcy-remote subsidiary in exchange for cash and beneficial interests. In the event a customer trades in a device prior to the end of the installment contract period, we agree to make a payment to the financial institutions equal to any outstanding remaining installment receivable balance. Accordingly, we record a guarantee obligation for this estimated amount at the time the receivables are transferred. The following table sets forth a summary of equipment installment receivables sold under this program: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Gross receivables sold 1 $ 2,557 $ 2,687 $ 5,461 $ 5,247 Net receivables sold 2 2,438 2,554 5,195 4,992 Cash proceeds received 2,532 2,656 5,406 5,185 Guarantee obligation recorded 217 242 483 448 1 Receivables net of promotion credits. 2 Receivables net of allowance and other reserves. Beneficial interests, when applicable, and guarantee obligations are initially recorded at estimated fair value and subsequently adjusted for changes in present value of expected cash flows. The estimation of their fair values is based on remaining installment payments expected to be collected and the expected timing and value of device trade-ins. The estimated value of the device trade-ins considers prices offered to us by independent third parties and contemplates changes in value after the launch of a device model. The fair value measurements used for the beneficial interests and the guarantee obligation are considered Level 3 under the Fair Value Measurement and Disclosure framework (see Note 7). The following table presents the previously transferred equipment installment receivables, which we repurchased in exchange for the associated beneficial interests: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Fair value of repurchased receivables $ 724 $ 765 $ 1,442 $ 1,306 Carrying value of beneficial interests 743 769 1,464 1,311 Gain (loss) on repurchases 1 $ (19) $ (4) $ (22) $ (5) 1 These gains (losses) are included in “Selling, general and administrative” expense in the consolidated statements of income. At June 30, 2024 and December 31, 2023, our beneficial interests were $2,764 and $2,270, respectively, of which $1,639 and $1,296 are included in “Prepaid and other current assets” on our consolidated balance sheets, with the remainder in “Other Assets.” The guarantee obligation at June 30, 2024 and December 31, 2023 was $299 and $385, respectively, of which $106 and $111 are included in “Accounts payable and accrued liabilities” on our consolidated balance sheets, with the remainder in “Other noncurrent liabilities.” Our maximum exposure to loss as a result of selling these equipment installment receivables is limited to the total amount of our beneficial interests and guarantee obligation. Revolving Receivables Program During the first quarter of 2024, we expanded our revolving agreement to transfer up to $1,800 of certain receivables through our bankruptcy-remote subsidiaries to various financial institutions on a recurring basis in exchange for cash equal to the gross receivables transferred. This agreement is subject to renewal on an annual basis and the transfer limit may be expanded or reduced from time to time. As customers pay their balances, we transfer additional receivables into the program, resulting in our gross receivables sold exceeding net cash flow impacts (e.g., collect and reinvest). The transferred receivables are fully guaranteed by our bankruptcy-remote subsidiaries, which hold additional receivables in the amount of $1,260 that are pledged as collateral under this agreement. The transfers are recorded at fair value of the proceeds received and obligations assumed less derecognized receivables. Our maximum exposure to loss related to these receivables transferred is limited to the derecognized amount outstanding. The following table sets forth a summary of the revolving receivables sold: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Gross receivables sold/cash proceeds received 1 $ 4,672 $ 1,000 $ 8,846 $ 1,000 Total collections under revolving agreement 4,672 — 8,546 — Net cash proceeds received $ — $ 1,000 $ 300 $ 1,000 Net receivables sold 2 $ 4,549 $ 982 $ 8,612 $ 982 1 Includes initial sales of receivables of $0 and $1,000 for the three months and $300 and $1,000 for the six months ended June 30, 2024 and 2023, respectively. 2 Receivables net of allowance and other reserves.

Transactions with DIRECTV

Transactions with DIRECTV	6 Months Ended
	Jun. 30, 2024
Related Party Transactions [Abstract]
Related Party Transactions Disclosure	NOTE 9. TRANSACTIONS WITH DIRECTV We account for our investment in DIRECTV under the equity method and record our share of DIRECTV earnings as equity in net income of affiliates, with DIRECTV considered a related party. At June 30, 2024, our investment in DIRECTV was $293. The following table sets forth our share of DIRECTV’s earnings included in “Equity in net income of affiliates” and cash distributions received from DIRECTV: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 DIRECTV’s earnings included in Equity in net income of affiliates $ 350 $ 377 $ 674 $ 911 Distributions classified as operating activities $ 350 $ 377 $ 674 $ 911 Distributions classified as investing activities 392 200 586 974 Cash distributions received from DIRECTV $ 742 $ 577 $ 1,260 $ 1,885 For the three and six months ended June 30, 2024, we billed DIRECTV approximately $134 and $279 under commercial arrangements and transition service agreements, which were recorded as a reduction to the operations and support expenses incurred. At June 30, 2024 , we had accounts receivable from DIRECTV of $247 and accounts payable to DIRECTV of $50. We are not committed, implicitly or explicitly, to provide financial or other support, other than as noted above, as our involvement with DIRECTV is limited to the carrying amount of the assets and liabilities recognized on our consolidated balance sheet.

Supplier and Vendor Financing P

Supplier and Vendor Financing Programs	6 Months Ended
	Jun. 30, 2024
Payables and Accruals [Abstract]
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	NOTE 10. SUPPLIER AND VENDOR FINANCING PROGRAMS Supplier Financing Program We actively manage the timing of our supplier payments for operating items to optimize the use of our cash and seek to make payments on 90-day or greater terms, while providing suppliers with access to bank facilities that permit earlier payment at their cost. Our supplier financing program does not result in changes to our normal, contracted payment cycles or cash from operations. At the supplier’s election, they can receive payment of AT&T obligations prior to the scheduled due dates, at a discounted price from the third-party financial institution. The discounted price paid by participating suppliers is based on a variable rate that is indexed to the overnight borrowing rate. We agree to pay the financial institution the stated amount generally within 90 days of receipt of the invoice. We do not have pledged assets or other guarantees under our supplier financing program. Suppliers had elected to sell to the third-party financial institutions $3,059 and $2,844 of our outstanding payment obligations as of June 30, 2024 and December 31, 2023, respectively. These amounts are included in “Accounts payable and accrued liabilities” on our consolidated balance sheets. Our supplier financing programs are reported as operating or investing (when capitalizable) activities in our statements of cash flows when paid. Direct Supplier Financing We also have arrangements with suppliers of handset inventory that allow us to extend the stated payment terms by up to 90 days at an additional cost to us (variable rate extension fee). We had $3,432 of direct supplier financing outstanding at June 30, 2024 and $5,442 as of December 31, 2023, which are included in “Accounts payable and accrued liabilities” on our consolidated balance sheets. Our direct supplier financing is reported as operating activities in our statements of cash flows when paid. Vendor Financing In connection with capital improvements and the acquisition of other productive assets, we negotiate favorable payment terms of 120 days or more (referred to as vendor financing), which are reported as financing activities in our statements of cash flows when paid. For the six months ended June 30, 2024 and 2023, we recorded vendor financing commitments related to capital investments of $523 and $1,341, respectively. We had $1,827 of vendor financing payables at June 30, 2024, with $883 included in “Accounts payable and accrued liabilities” and $2,833 of vendor financing payables at December 31, 2023, with $1,975 included in “Accounts payable and accrued liabilities.”

Additional Financial Informatio

Additional Financial Information	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Additional Financial Information	NOTE 11. ADDITIONAL FINANCIAL INFORMATION Cash and Cash Flows We typically maintain our restricted cash balances for purchases and sales of certain investment securities and funding of certain deferred compensation benefit payments. The following table summarizes cash and cash equivalents and restricted cash balances contained on our consolidated balance sheets: June 30, December 31, 2024 2023 2023 2022 Cash and cash equivalents $ 3,093 $ 9,528 $ 6,722 $ 3,701 Restricted cash in Prepaid and other current assets 1 1 2 1 Restricted cash in Other Assets 109 93 109 91 Cash and Cash Equivalents and Restricted Cash $ 3,203 $ 9,622 $ 6,833 $ 3,793 The following table summarizes cash paid during the periods for interest and income taxes: Six months ended June 30, Cash paid (received) during the period for: 2024 2023 Interest $ 3,644 $ 3,604 Income taxes, net of refunds 299 335 The following table summarizes capital expenditures: Six months ended June 30, 2024 2023 Purchase of property and equipment $ 8,042 $ 8,515 Interest during construction - capital expenditures 1 76 90 Total Capital Expenditures $ 8,118 $ 8,605 The following table summarizes acquisitions, net of cash acquired: Six months ended June 30, 2024 2023 Business acquisitions $ — $ — Spectrum acquisitions 147 68 Interest during construction - spectrum 1 123 447 Total Acquisitions $ 270 $ 515 1 Total capitalized interest was $199 and $537 for the six months ended June 30, 2024 and 2023, respectively.

Preparation Of Interim Financ_2

Preparation Of Interim Financial Statements (Policies)	6 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Principles of Consolidation [Policy Text Block]	All significant intercompany transactions are eliminated in the consolidation process. Investments in subsidiaries and partnerships which we do not control but have significant influence are accounted for under the equity method. Earnings from certain investments accounted for using the equity method are included in our results on a one quarter lag. We also record our proportionate share of our equity method investees’ other comprehensive income (OCI) items, including translation adjustments.
Basis of Accounting [Policy Text Block]	The preparation of financial statements in conformity with U.S. generally accepted accounting principles (GAAP) requires management to make estimates and assumptions, including estimates of fair value, probable losses and expenses, that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Pension And Postretirement Be_2

Pension And Postretirement Benefits (Policies)	6 Months Ended
	Jun. 30, 2024
Retirement Benefits [Abstract]
Recognition of Actuarial Gains and Losses [Policy Text Block]	We recognize actuarial gains and losses on pension and postretirement plan assets in our consolidated results as a component of “Other income (expense) – net” at our annual measurement date of December 31, unless earlier remeasurements are required.

Fair Value Measures and Disclos

Fair Value Measures and Disclosures (Policies)	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Derivatives, Offsetting Fair Value Amounts [Policy Text Block]	We do not offset the fair value of collateral, whether the right to reclaim cash collateral (a receivable) or the obligation to return cash collateral (a payable) exists, against the fair value of the derivative instruments.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Reconciliation of Numerators and Denominators of Basic and Diluted Earnings Per Share	A reconciliation of the numerators and denominators of basic and diluted earnings per share is shown in the table below: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Numerators Numerator for basic earnings per share: Net Income Attributable to Common Stock $ 3,546 $ 4,437 $ 6,941 $ 8,613 Dilutive potential common shares: Mobility preferred interests — — — 72 Share-based payment — — — 7 Numerator for diluted earnings per share $ 3,546 $ 4,437 $ 6,941 $ 8,692 Denominators (000,000) Denominator for basic earnings per share: Weighted average number of common shares outstanding 7,196 7,180 7,194 7,174 Dilutive potential common shares: Mobility preferred interests (in shares) — — — 142 Share-based payment (in shares) 2 — 1 11 Denominator for diluted earnings per share 7,198 7,180 7,195 7,327

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income	Changes in the balances of each component included in accumulated OCI are presented below. All amounts are net of tax. Foreign Currency Translation Adjustment Net Unrealized Gains (Losses) on Securities Net Unrealized Gains (Losses) on Derivative Instruments Defined Benefit Postretirement Plans Accumulated Other Comprehensive Income (Loss) Balance as of December 31, 2023 $ (1,337) $ (57) $ (1,029) $ 4,723 $ 2,300 Other comprehensive income (loss) before reclassifications (192) (17) (49) — (258) Amounts reclassified from accumulated OCI 127 1 10 1 22 2 (761) 3 (602) Net other comprehensive income (loss) (65) (7) (27) (761) (860) Balance as of June 30, 2024 $ (1,402) $ (64) $ (1,056) $ 3,962 $ 1,440 Foreign Currency Translation Adjustment Net Unrealized Gains (Losses) on Securities Net Unrealized Gains (Losses) on Derivative Instruments Defined Benefit Postretirement Plans Accumulated Other Comprehensive Income (Loss) Balance as of December 31, 2022 $ (1,800) $ (90) $ (1,998) $ 6,654 $ 2,766 Other comprehensive income (loss) before reclassifications 457 12 24 — 493 Amounts reclassified from accumulated OCI — 1 5 1 23 2 (982) 3 (954) Net other comprehensive income (loss) 457 17 47 (982) (461) Balance as of June 30, 2023 $ (1,343) $ (73) $ (1,951) $ 5,672 $ 2,305 1 (Gains) losses are included in “Other income (expense) - net” in the consolidated statements of income. 2 (Gains) losses are primarily included in “Interest expense” in the consolidated statements of income (see Note 7). 3 The amortization of prior service credits associated with postretirement benefits are included in “Other income (expense) - net” in the consolidated statements of income (see Note 6).

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Reconciliation of Revenues to Segment Contribution	For the three months ended June 30, 2024 Revenues Operations EBITDA Depreciation Operating Communications Mobility $ 20,480 $ 11,285 $ 9,195 $ 2,476 $ 6,719 Business Wireline 4,755 3,267 1,488 1,386 102 Consumer Wireline 3,347 2,249 1,098 914 184 Total Communications 28,582 16,801 11,781 4,776 7,005 Latin America - Mexico 1,103 925 178 172 6 Segment Total 29,685 17,726 11,959 4,948 7,011 Corporate and Other Corporate: DTV-related retained costs — 116 (116) 102 (218) Parent administration support — 443 (443) 2 (445) Securitization fees 29 150 (121) — (121) Value portfolio 83 25 58 5 53 Total Corporate 112 734 (622) 109 (731) Certain significant items — 505 (505) 15 (520) Total Corporate and Other 112 1,239 (1,127) 124 (1,251) AT&T Inc. $ 29,797 $ 18,965 $ 10,832 $ 5,072 $ 5,760 For the three months ended June 30, 2023 Revenues Operations and Support Expenses EBITDA Depreciation and Amortization Operating Income (Loss) Communications Mobility $ 20,315 $ 11,579 $ 8,736 $ 2,123 $ 6,613 Business Wireline 5,279 3,550 1,729 1,333 396 Consumer Wireline 3,251 2,226 1,025 857 168 Total Communications 28,845 17,355 11,490 4,313 7,177 Latin America - Mexico 967 821 146 185 (39) Segment Total 29,812 18,176 11,636 4,498 7,138 Corporate and Other Corporate: DTV-related retained costs — 178 (178) 152 (330) Parent administration support (3) 332 (335) 2 (337) Securitization fees 17 154 (137) — (137) Value portfolio 91 24 67 6 61 Total Corporate 105 688 (583) 160 (743) Certain significant items — (28) 28 17 11 Total Corporate and Other 105 660 (555) 177 (732) AT&T Inc. $ 29,917 $ 18,836 $ 11,081 $ 4,675 $ 6,406 For the six months ended June 30, 2024 Revenues Operations EBITDA Depreciation Operating Communications Mobility $ 41,074 $ 22,924 $ 18,150 $ 4,963 $ 13,187 Business Wireline 9,668 6,754 2,914 2,748 166 Consumer Wireline 6,697 4,505 2,192 1,795 397 Total Communications 57,439 34,183 23,256 9,506 13,750 Latin America - Mexico 2,166 1,808 358 349 9 Segment Total 59,605 35,991 23,614 9,855 13,759 Corporate and Other Corporate: DTV-related retained costs — 250 (250) 222 (472) Parent administration support — 835 (835) 3 (838) Securitization fees 55 315 (260) — (260) Value portfolio 165 51 114 9 105 Total Corporate 220 1,451 (1,231) 234 (1,465) Certain significant items — 657 (657) 30 (687) Total Corporate and Other 220 2,108 (1,888) 264 (2,152) AT&T Inc. $ 59,825 $ 38,099 $ 21,726 $ 10,119 $ 11,607 For the six months ended June 30, 2023 Revenues Operations and Support Expenses EBITDA Depreciation and Amortization Operating Income (Loss) Communications Mobility $ 40,897 $ 23,792 $ 17,105 $ 4,221 $ 12,884 Business Wireline 10,610 7,173 3,437 2,663 774 Consumer Wireline 6,490 4,510 1,980 1,718 262 Total Communications 57,997 35,475 22,522 8,602 13,920 Latin America - Mexico 1,850 1,559 291 360 (69) Segment Total 59,847 37,034 22,813 8,962 13,851 Corporate and Other Corporate: DTV-related retained costs — 347 (347) 296 (643) Parent administration support (12) 706 (718) 3 (721) Securitization fees 36 275 (239) — (239) Value portfolio 185 52 133 11 122 Total Corporate 209 1,380 (1,171) 310 (1,481) Certain significant items — (72) 72 34 38 Total Corporate and Other 209 1,308 (1,099) 344 (1,443) AT&T Inc. $ 60,056 $ 38,342 $ 21,714 $ 9,306 $ 12,408
Reconciliation of Segment Contributions to Income Before Income Taxes	The following table is a reconciliation of Segment Operating Income to “Income Before Income Taxes” reported in our consolidated statements of income: Three months ended Six months ended 2024 2023 2024 2023 Communications $ 7,005 $ 7,177 $ 13,750 $ 13,920 Latin America 6 (39) 9 (69) Segment Operating Income 7,011 7,138 13,759 13,851 Reconciling Items: Corporate (731) (743) (1,465) (1,481) Transaction and other costs (35) — (67) — Amortization of intangibles acquired (15) (17) (30) (34) Asset impairments and abandonments and restructuring (480) — (639) — Benefit-related gains (losses) 10 28 49 72 AT&T Operating Income 5,760 6,406 11,607 12,408 Interest expense 1,699 1,608 3,423 3,316 Equity in net income of affiliates 348 380 643 918 Other income (expense) — net 682 987 1,133 1,922 Income Before Income Taxes $ 5,091 $ 6,165 $ 9,960 $ 11,932

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	Jun. 30, 2024
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue by Category and Business Unit	The following tables set forth reported revenue by category and by business unit: For the three months ended June 30, 2024 Communications Mobility Business Wireline Consumer Wireline Latin America Corporate & Other Total Wireless service $ 16,277 $ — $ — $ 699 $ — $ 16,976 Business service — 4,571 — — — 4,571 Broadband — — 2,741 — — 2,741 Legacy voice and data — — 323 — 62 385 Other — — 283 — 50 333 Total Service 16,277 4,571 3,347 699 112 25,006 Equipment 4,203 184 — 404 — 4,791 Total $ 20,480 $ 4,755 $ 3,347 $ 1,103 $ 112 $ 29,797 For the three months ended June 30, 2023 Communications Mobility Business Wireline Consumer Wireline Latin America Corporate & Other Total Wireless service $ 15,745 $ — $ — $ 635 $ — $ 16,380 Business service — 5,114 — — — 5,114 Broadband — — 2,561 — — 2,561 Legacy voice and data — — 383 — 80 463 Other — — 307 — 25 332 Total Service 15,745 5,114 3,251 635 105 24,850 Equipment 4,570 165 — 332 — 5,067 Total $ 20,315 $ 5,279 $ 3,251 $ 967 $ 105 $ 29,917 For the six months ended June 30, 2024 Communications Mobility Business Wireline Consumer Wireline Latin America Corporate & Other Total Wireless service $ 32,271 $ — $ — $ 1,389 $ — $ 33,660 Business service — 9,271 — — — 9,271 Broadband — — 5,463 — — 5,463 Legacy voice and data — — 665 — 124 789 Other — — 569 — 96 665 Total Service 32,271 9,271 6,697 1,389 220 49,848 Equipment 8,803 397 — 777 — 9,977 Total $ 41,074 $ 9,668 $ 6,697 $ 2,166 $ 220 $ 59,825 For the six months ended June 30, 2023 Communications Mobility Business Wireline Consumer Wireline Latin America Corporate & Other Total Wireless service $ 31,228 $ — $ — $ 1,226 $ — $ 32,454 Business service — 10,314 — — — 10,314 Broadband — — 5,088 — — 5,088 Legacy voice and data — — 779 — 163 942 Other — — 623 — 46 669 Total Service 31,228 10,314 6,490 1,226 209 49,467 Equipment 9,669 296 — 624 — 10,589 Total $ 40,897 $ 10,610 $ 6,490 $ 1,850 $ 209 $ 60,056
Schedule of Deferred Customer Contract Acquisition and Fulfillment Costs	The following table presents the deferred customer contract acquisition and fulfillment costs included on our consolidated balance sheets: June 30, December 31, Consolidated Balance Sheets 2024 2023 Deferred Acquisition Costs Prepaid and other current assets $ 3,176 $ 3,233 Other Assets 4,087 4,077 Total deferred customer contract acquisition costs $ 7,263 $ 7,310 Deferred Fulfillment Costs Prepaid and other current assets $ 2,213 $ 2,340 Other Assets 3,533 3,843 Total deferred customer contract fulfillment costs $ 5,746 $ 6,183 The following table presents deferred customer contract acquisition and fulfillment cost amortization, which are primarily included in “Selling, general and administrative” and “Other cost of revenues,” respectively, for the six months ended: June 30, June 30, Consolidated Statements of Income 2024 2023 Deferred acquisition cost amortization $ 1,808 $ 1,688 Deferred fulfillment cost amortization 1,294 1,353
Schedule of Contract Assets and Liabilities	The following table presents contract assets and liabilities on our consolidated balance sheets: June 30, December 31, Consolidated Balance Sheets 2024 2023 Contract asset $ 6,492 $ 6,518 Current portion in “Prepaid and other current assets” 3,661 3,549 Contract liability 4,155 3,994 Current portion in “Advanced billings and customer deposits” 3,857 3,666

Pension And Postretirement Be_3

Pension And Postretirement Benefits (Tables)	6 Months Ended
	Jun. 30, 2024
Retirement Benefits [Abstract]
Schedule of Pension and Postretirement Benefit (Credits) Costs [Table Text Block]	The following table details qualified pension and postretirement benefit costs included in the accompanying consolidated statements of income. The service cost component of net periodic pension (credit) cost is recorded in operating expenses in the consolidated statements of income while the remaining components are recorded in “Other income (expense) – net.” Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Pension cost: Service cost – benefits earned during the period $ 121 $ 122 $ 243 $ 243 Interest cost on projected benefit obligation 397 516 793 1,032 Expected return on assets (552) (715) (1,105) (1,429) Amortization of prior service credit (22) (34) (44) (67) Net pension (credit) cost before remeasurement (56) (111) (113) (221) Actuarial (gain) loss — 289 — 289 Settlement (gain) loss — (363) — (363) Net pension (credit) cost $ (56) $ (185) $ (113) $ (295) Postretirement cost: Service cost – benefits earned during the period $ 6 $ 6 $ 11 $ 12 Interest cost on accumulated postretirement benefit obligation 78 85 155 170 Expected return on assets (16) (33) (30) (66) Amortization of prior service credit (482) (618) (964) (1,236) Net postretirement (credit) cost $ (414) $ (560) $ (828) $ (1,120) Combined net pension and postretirement (credit) cost $ (470) $ (745) $ (941) $ (1,415)

Fair Value Measurements And D_2

Fair Value Measurements And Disclosure (Tables)	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Long-Term Debt and Other Financial Instruments	The carrying amounts and estimated fair values of our long-term debt, including current maturities, and other financial instruments are summarized as follows: June 30, 2024 December 31, 2023 Carrying Fair Carrying Fair Amount Value Amount Value Notes and debentures 1 $ 126,253 $ 117,290 $ 133,402 $ 128,474 Commercial paper 2,693 2,693 2,091 2,091 Investment securities 2 2,972 2,972 2,836 2,836 1 Includes credit agreement borrowings. 2 Excludes investments accounted for under the equity method.
Fair Value Leveling	Following is the fair value leveling for investment securities that are measured at fair value and derivatives as of June 30, 2024 and December 31, 2023. Derivatives designated as hedging instruments are reflected as “Prepaid and other current assets,” “Other Assets,” “Accounts payable and accrued liabilities,” and “Other noncurrent liabilities” on our consolidated balance sheets. June 30, 2024 Level 1 Level 2 Level 3 Total Equity Securities Domestic equities $ 1,087 $ — $ — $ 1,087 International equities 285 — — 285 Fixed income equities 208 — — 208 Available-for-Sale Debt Securities — 1,169 — 1,169 Asset Derivatives Cross-currency swaps — 121 — 121 Liability Derivatives Interest rate swaps — (1) — (1) Cross-currency swaps — (3,794) — (3,794) December 31, 2023 Level 1 Level 2 Level 3 Total Equity Securities Domestic equities $ 1,002 $ — $ — $ 1,002 International equities 215 — — 215 Fixed income equities 209 — — 209 Available-for-Sale Debt Securities — 1,228 — 1,228 Asset Derivatives Cross-currency swaps — 424 — 424 Liability Derivatives Interest rate swaps — (2) — (2) Cross-currency swaps — (3,601) — (3,601)
Components Comprising Total Gains and Losses on Equity Securities	The components comprising total gains and losses in the period on equity securities are as follows: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Total gains (losses) recognized on equity securities $ 29 $ 82 $ 126 $ 165 Gains (losses) recognized on equity securities sold (5) (3) (8) 1 Unrealized gains (losses) recognized on equity securities held at end of period $ 34 $ 85 $ 134 $ 164
Notional Amount of Outstanding Derivative Positions	Following are the notional amounts of our outstanding derivative positions: June 30, December 31, 2024 2023 Interest rate swaps $ 1,750 $ 1,750 Cross-currency swaps 35,351 38,006 Total $ 37,101 $ 39,756
Effect on Derivatives on the Consolidated Statements of Income	Following are the related hedged items affecting our financial position and performance: Effect of Derivatives on the Consolidated Statements of Income Three months ended Six months ended June 30, June 30, Fair Value Hedging Relationships 2024 2023 2024 2023 Interest rate swaps (“Interest expense”): Gain (loss) on interest rate swaps $ (1) $ (14) $ (1) $ (7) Gain (loss) on long-term debt 1 14 1 7 Cross-currency swaps: Gain (loss) on cross-currency swaps (178) 389 (424) 769 Gain (loss) on long-term debt 178 (389) 424 (769) Gain (loss) recognized in accumulated OCI (325) 222 (70) 40 Foreign exchange contracts: Gain (loss) on foreign exchange contracts — 4 — 11 Gain (loss) on long-term debt — (4) — (11) Gain (loss) recognized in accumulated OCI — (3) — (6) The following table presents information for our cash flow hedging relationships: Three months ended Six months ended June 30, June 30, Cash Flow Hedging Relationships 2024 2023 2024 2023 Cross-currency swaps: Gain (loss) recognized in accumulated OCI $ — $ 2 $ 5 $ (8) Interest rate locks: Interest income (expense) reclassified from accumulated OCI into income (14) (14) (29) (29)

Sales Of Receivables (Tables)

Sales Of Receivables (Tables)	6 Months Ended
	Jun. 30, 2024
Receivables [Abstract]
Schedule of Finance Receivables	The following table sets forth a summary of cash proceeds received, net of remittances paid, from sales of receivables: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Net cash received (paid) from equipment installment receivables program 1 $ (674) $ (36) $ (553) $ (60) Net cash received (paid) from revolving receivables program (29) 1,000 247 1,000 Net cash received (paid) from other programs — (142) — (256) Total net cash impact to cash flows from operating activities 2 $ (703) $ 822 $ (306) $ 684 1 Cash from initial sales of $2,532 and $2,656 for the three months and $5,406 and $5,185 for the six months ended June 30, 2024 and 2023, respectively. 2 Net of facility fees. June 30, 2024 December 31, 2023 Equipment Equipment Installment Revolving Installment Revolving Gross receivables: $ 3,194 $ 1,260 $ 3,714 $ 924 Balance sheet classification Accounts receivable Notes receivable 1,581 — 1,695 — Trade receivables 651 1,260 548 924 Other Assets Noncurrent notes and trade receivables 962 — 1,471 — Outstanding portfolio of receivables derecognized from our consolidated balance sheets $ 12,210 $ 1,800 $ 12,027 $ 1,500 Cash proceeds received, net of remittances 1 8,947 1,800 9,361 1,500 1 Represents amounts to which financial institutions remain entitled, excluding the beneficial interests. The following table sets forth a summary of equipment installment receivables sold under this program: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Gross receivables sold 1 $ 2,557 $ 2,687 $ 5,461 $ 5,247 Net receivables sold 2 2,438 2,554 5,195 4,992 Cash proceeds received 2,532 2,656 5,406 5,185 Guarantee obligation recorded 217 242 483 448 1 Receivables net of promotion credits. 2 Receivables net of allowance and other reserves. The following table presents the previously transferred equipment installment receivables, which we repurchased in exchange for the associated beneficial interests: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Fair value of repurchased receivables $ 724 $ 765 $ 1,442 $ 1,306 Carrying value of beneficial interests 743 769 1,464 1,311 Gain (loss) on repurchases 1 $ (19) $ (4) $ (22) $ (5) 1 These gains (losses) are included in “Selling, general and administrative” expense in the consolidated statements of income.
Schedule of Receivables Sold	The following table sets forth a summary of the revolving receivables sold: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 Gross receivables sold/cash proceeds received 1 $ 4,672 $ 1,000 $ 8,846 $ 1,000 Total collections under revolving agreement 4,672 — 8,546 — Net cash proceeds received $ — $ 1,000 $ 300 $ 1,000 Net receivables sold 2 $ 4,549 $ 982 $ 8,612 $ 982 1 Includes initial sales of receivables of $0 and $1,000 for the three months and $300 and $1,000 for the six months ended June 30, 2024 and 2023, respectively. 2 Receivables net of allowance and other reserves.

Transaction With DIRECTV (Table

Transaction With DIRECTV (Tables)	6 Months Ended
	Jun. 30, 2024
Related Party Transactions [Abstract]
Schedule of Related Party Transactions [Table Text Block]	The following table sets forth our share of DIRECTV’s earnings included in “Equity in net income of affiliates” and cash distributions received from DIRECTV: Three months ended Six months ended June 30, June 30, 2024 2023 2024 2023 DIRECTV’s earnings included in Equity in net income of affiliates $ 350 $ 377 $ 674 $ 911 Distributions classified as operating activities $ 350 $ 377 $ 674 $ 911 Distributions classified as investing activities 392 200 586 974 Cash distributions received from DIRECTV $ 742 $ 577 $ 1,260 $ 1,885

Additional Financial Informat_2

Additional Financial Information (Tables)	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Cash and Cash Flows and Debt Transactions	The following table summarizes cash and cash equivalents and restricted cash balances contained on our consolidated balance sheets: June 30, December 31, 2024 2023 2023 2022 Cash and cash equivalents $ 3,093 $ 9,528 $ 6,722 $ 3,701 Restricted cash in Prepaid and other current assets 1 1 2 1 Restricted cash in Other Assets 109 93 109 91 Cash and Cash Equivalents and Restricted Cash $ 3,203 $ 9,622 $ 6,833 $ 3,793 The following table summarizes cash paid during the periods for interest and income taxes: Six months ended June 30, Cash paid (received) during the period for: 2024 2023 Interest $ 3,644 $ 3,604 Income taxes, net of refunds 299 335 The following table summarizes capital expenditures: Six months ended June 30, 2024 2023 Purchase of property and equipment $ 8,042 $ 8,515 Interest during construction - capital expenditures 1 76 90 Total Capital Expenditures $ 8,118 $ 8,605 The following table summarizes acquisitions, net of cash acquired: Six months ended June 30, 2024 2023 Business acquisitions $ — $ — Spectrum acquisitions 147 68 Interest during construction - spectrum 1 123 447 Total Acquisitions $ 270 $ 515 1 Total capitalized interest was $199 and $537 for the six months ended June 30, 2024 and 2023, respectively.

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator for basic earnings per share:
Net Income Attributable to Common Stock	$ 3,546	$ 4,437	$ 6,941	$ 8,613
Dilutive potential common shares:
Numerator for diluted earnings per share	$ 3,546	$ 4,437	$ 6,941	$ 8,692
Denominator for basic earnings per share:
Weighted average number of common shares outstanding (in shares)	7,196	7,180	7,194	7,174
Dilutive potential common shares:
Denominator for diluted earnings per share (in shares)	7,198	7,180	7,195	7,327
AT&T Mobility II, LLC preferred interest conversion
Dilutive potential common shares:
Share-based payment	$ 0	$ 0	$ 0	$ 72
Dilutive potential common shares:
Share-based payment (in shares)	0	0	0	142
Other AT&T units
Dilutive potential common shares:
Share-based payment	$ 0	$ 0	$ 0	$ 7
Dilutive potential common shares:
Share-based payment (in shares)	2	0	1	11

Other Comprehensive Income (Det

Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income (loss) before reclassifications			$ (258)	$ 493
Amounts reclassified from accumulated OCI			(602)	(954)
Net other comprehensive income (loss)			(860)	(461)
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance			2,300	2,766
Net other comprehensive income (loss)	$ (727)	$ (49)	(860)	(461)
Accumulated other comprehensive income, ending balance	1,440	2,305	1,440	2,305
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance			(1,337)	(1,800)
Other comprehensive income (loss) before reclassifications			(192)	457
Amounts reclassified from accumulated OCI			127	0
Net other comprehensive income (loss)			(65)	457
Accumulated other comprehensive income, ending balance	(1,402)	(1,343)	(1,402)	(1,343)
Net Unrealized Gains (Losses) on Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance			(57)	(90)
Other comprehensive income (loss) before reclassifications			(17)	12
Amounts reclassified from accumulated OCI			10	5
Net other comprehensive income (loss)			(7)	17
Accumulated other comprehensive income, ending balance	(64)	(73)	(64)	(73)
Net Unrealized Gains (Losses) on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance			(1,029)	(1,998)
Other comprehensive income (loss) before reclassifications			(49)	24
Amounts reclassified from accumulated OCI			22	23
Net other comprehensive income (loss)			(27)	47
Accumulated other comprehensive income, ending balance	(1,056)	(1,951)	(1,056)	(1,951)
Defined Benefit Postretirement Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance			4,723	6,654
Other comprehensive income (loss) before reclassifications			0	0
Amounts reclassified from accumulated OCI			(761)	(982)
Net other comprehensive income (loss)			(761)	(982)
Accumulated other comprehensive income, ending balance	$ 3,962	$ 5,672	$ 3,962	$ 5,672

Segment Information (Summary Of

Segment Information (Summary Of Operating Revenues And Expenses) (Narrative) (Details)	6 Months Ended
	Jun. 30, 2024 segment
Segment Reporting [Abstract]
Number of reportable segments	2

Segment Information (Summary _2

Segment Information (Summary Of Operating Revenues And Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Revenues	$ 29,797	$ 29,917	$ 59,825	$ 60,056
Operations and Support Expenses	18,965	18,836	38,099	38,342
EBITDA	10,832	11,081	21,726	21,714
Depreciation and Amortization	5,072	4,675	10,119	9,306
Operating Income (Loss)	5,760	6,406	11,607	12,408
Operating Segments
Segment Reporting Information [Line Items]
Revenues	29,685	29,812	59,605	59,847
Operations and Support Expenses	17,726	18,176	35,991	37,034
EBITDA	11,959	11,636	23,614	22,813
Depreciation and Amortization	4,948	4,498	9,855	8,962
Operating Income (Loss)	7,011	7,138	13,759	13,851
DTV-related retained costs
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Operations and Support Expenses	116	178	250	347
EBITDA	(116)	(178)	(250)	(347)
Depreciation and Amortization	102	152	222	296
Operating Income (Loss)	(218)	(330)	(472)	(643)
Parent Administration Support
Segment Reporting Information [Line Items]
Revenues	0	(3)	0	(12)
Operations and Support Expenses	443	332	835	706
EBITDA	(443)	(335)	(835)	(718)
Depreciation and Amortization	2	2	3	3
Operating Income (Loss)	(445)	(337)	(838)	(721)
Securitization Fees
Segment Reporting Information [Line Items]
Revenues	29	17	55	36
Operations and Support Expenses	150	154	315	275
EBITDA	(121)	(137)	(260)	(239)
Depreciation and Amortization	0	0	0	0
Operating Income (Loss)	(121)	(137)	(260)	(239)
Value Portfolio
Segment Reporting Information [Line Items]
Revenues	83	91	165	185
Operations and Support Expenses	25	24	51	52
EBITDA	58	67	114	133
Depreciation and Amortization	5	6	9	11
Operating Income (Loss)	53	61	105	122
Total Corporate
Segment Reporting Information [Line Items]
Revenues	112	105	220	209
Operations and Support Expenses	734	688	1,451	1,380
EBITDA	(622)	(583)	(1,231)	(1,171)
Depreciation and Amortization	109	160	234	310
Operating Income (Loss)	(731)	(743)	(1,465)	(1,481)
Certain significant items
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Operations and Support Expenses	505	(28)	657	(72)
EBITDA	(505)	28	(657)	72
Depreciation and Amortization	15	17	30	34
Operating Income (Loss)	(520)	11	(687)	38
Communications | Operating Segments
Segment Reporting Information [Line Items]
Revenues	28,582	28,845	57,439	57,997
Operations and Support Expenses	16,801	17,355	34,183	35,475
EBITDA	11,781	11,490	23,256	22,522
Depreciation and Amortization	4,776	4,313	9,506	8,602
Operating Income (Loss)	7,005	7,177	13,750	13,920
Communications | Mobility | Operating Segments
Segment Reporting Information [Line Items]
Revenues	20,480	20,315	41,074	40,897
Operations and Support Expenses	11,285	11,579	22,924	23,792
EBITDA	9,195	8,736	18,150	17,105
Depreciation and Amortization	2,476	2,123	4,963	4,221
Operating Income (Loss)	6,719	6,613	13,187	12,884
Communications | Business Wireline | Operating Segments
Segment Reporting Information [Line Items]
Revenues	4,755	5,279	9,668	10,610
Operations and Support Expenses	3,267	3,550	6,754	7,173
EBITDA	1,488	1,729	2,914	3,437
Depreciation and Amortization	1,386	1,333	2,748	2,663
Operating Income (Loss)	102	396	166	774
Communications | Consumer Wireline | Operating Segments
Segment Reporting Information [Line Items]
Revenues	3,347	3,251	6,697	6,490
Operations and Support Expenses	2,249	2,226	4,505	4,510
EBITDA	1,098	1,025	2,192	1,980
Depreciation and Amortization	914	857	1,795	1,718
Operating Income (Loss)	184	168	397	262
Latin America - Mexico | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,103	967	2,166	1,850
Operations and Support Expenses	925	821	1,808	1,559
EBITDA	178	146	358	291
Depreciation and Amortization	172	185	349	360
Operating Income (Loss)	6	(39)	9	(69)
Total Corporate and Other
Segment Reporting Information [Line Items]
Revenues	112	105	220	209
Operations and Support Expenses	1,239	660	2,108	1,308
EBITDA	(1,127)	(555)	(1,888)	(1,099)
Depreciation and Amortization	124	177	264	344
Operating Income (Loss)	$ (1,251)	$ (732)	$ (2,152)	$ (1,443)

Segment Information (Reconcilia

Segment Information (Reconciliation Of Operating Income Loss to Consolidated Statement Of Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
AT&T Operating Income	$ 5,760	$ 6,406	$ 11,607	$ 12,408
Asset impairments and abandonments and restructuring	(480)	0	(639)	0
Interest expense	1,699	1,608	3,423	3,316
Equity in net income of affiliates	348	380	643	918
Other income (expense) — net	682	987	1,133	1,922
Income Before Income Taxes	5,091	6,165	9,960	11,932
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
AT&T Operating Income	7,011	7,138	13,759	13,851
Operating Segments | Communications
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
AT&T Operating Income	7,005	7,177	13,750	13,920
Operating Segments | Latin America
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
AT&T Operating Income	6	(39)	9	(69)
Corporate
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
AT&T Operating Income	(731)	(743)	(1,465)	(1,481)
Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Transaction and other costs	(35)	0	(67)	0
Amortization of intangibles acquired	(15)	(17)	(30)	(34)
Asset impairments and abandonments and restructuring	(480)	0	(639)	0
Benefit-related gains (losses)	$ 10	$ 28	$ 49	$ 72

Revenue Recognition (Revenue Ca

Revenue Recognition (Revenue Categories) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 29,797	$ 29,917	$ 59,825	$ 60,056
Total Service
Disaggregation of Revenue [Line Items]
Total operating revenues	25,006	24,850	49,848	49,467
Wireless service
Disaggregation of Revenue [Line Items]
Total operating revenues	16,976	16,380	33,660	32,454
Business service
Disaggregation of Revenue [Line Items]
Total operating revenues	4,571	5,114	9,271	10,314
Broadband
Disaggregation of Revenue [Line Items]
Total operating revenues	2,741	2,561	5,463	5,088
Legacy voice and data
Disaggregation of Revenue [Line Items]
Total operating revenues	385	463	789	942
Other
Disaggregation of Revenue [Line Items]
Total operating revenues	333	332	665	669
Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	4,791	5,067	9,977	10,589
Operating Segments
Disaggregation of Revenue [Line Items]
Total operating revenues	29,685	29,812	59,605	59,847
Operating Segments | Communications
Disaggregation of Revenue [Line Items]
Total operating revenues	28,582	28,845	57,439	57,997
Operating Segments | Communications | Mobility
Disaggregation of Revenue [Line Items]
Total operating revenues	20,480	20,315	41,074	40,897
Operating Segments | Communications | Mobility | Total Service
Disaggregation of Revenue [Line Items]
Total operating revenues	16,277	15,745	32,271	31,228
Operating Segments | Communications | Mobility | Wireless service
Disaggregation of Revenue [Line Items]
Total operating revenues	16,277	15,745	32,271	31,228
Operating Segments | Communications | Mobility | Business service
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Mobility | Broadband
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Mobility | Legacy voice and data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Mobility | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Mobility | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	4,203	4,570	8,803	9,669
Operating Segments | Communications | Business Wireline
Disaggregation of Revenue [Line Items]
Total operating revenues	4,755	5,279	9,668	10,610
Operating Segments | Communications | Business Wireline | Total Service
Disaggregation of Revenue [Line Items]
Total operating revenues	4,571	5,114	9,271	10,314
Operating Segments | Communications | Business Wireline | Wireless service
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Business Wireline | Business service
Disaggregation of Revenue [Line Items]
Total operating revenues	4,571	5,114	9,271	10,314
Operating Segments | Communications | Business Wireline | Broadband
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Business Wireline | Legacy voice and data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Business Wireline | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Business Wireline | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	184	165	397	296
Operating Segments | Communications | Consumer Wireline
Disaggregation of Revenue [Line Items]
Total operating revenues	3,347	3,251	6,697	6,490
Operating Segments | Communications | Consumer Wireline | Total Service
Disaggregation of Revenue [Line Items]
Total operating revenues	3,347	3,251	6,697	6,490
Operating Segments | Communications | Consumer Wireline | Wireless service
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Consumer Wireline | Business service
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Consumer Wireline | Broadband
Disaggregation of Revenue [Line Items]
Total operating revenues	2,741	2,561	5,463	5,088
Operating Segments | Communications | Consumer Wireline | Legacy voice and data
Disaggregation of Revenue [Line Items]
Total operating revenues	323	383	665	779
Operating Segments | Communications | Consumer Wireline | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	283	307	569	623
Operating Segments | Communications | Consumer Wireline | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America
Disaggregation of Revenue [Line Items]
Total operating revenues	1,103	967	2,166	1,850
Operating Segments | Latin America | Total Service
Disaggregation of Revenue [Line Items]
Total operating revenues	699	635	1,389	1,226
Operating Segments | Latin America | Wireless service
Disaggregation of Revenue [Line Items]
Total operating revenues	699	635	1,389	1,226
Operating Segments | Latin America | Business service
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Broadband
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Legacy voice and data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	404	332	777	624
Corporate
Disaggregation of Revenue [Line Items]
Total operating revenues	112	105	220	209
Corporate | Total Service
Disaggregation of Revenue [Line Items]
Total operating revenues	112	105	220	209
Corporate | Wireless service
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Corporate | Business service
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Corporate | Broadband
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Corporate | Legacy voice and data
Disaggregation of Revenue [Line Items]
Total operating revenues	62	80	124	163
Corporate | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	50	25	96	46
Corporate | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 0	$ 0	$ 0	$ 0

Revenue Recognition (Narrative)

Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Contract with Customer, Asset and Liability [Abstract]
Contract liability balance - current portion	$ 3,981	$ 3,778
Beginning of period contract liability recorded as customer contract revenue during period	3,142
Prepaid and other current assets
Contract with Customer, Asset and Liability [Abstract]
Contract asset balance - current portion	3,661	3,549
Deferred Acquisition Costs
Capitalized Contract Cost [Line Items]
Excluded deferred costs	7,263	7,310
Deferred Acquisition Costs | Prepaid and other current assets
Capitalized Contract Cost [Line Items]
Excluded deferred costs	3,176	3,233
Deferred Acquisition Costs | Other Assets
Capitalized Contract Cost [Line Items]
Excluded deferred costs	$ 4,087	4,077
Deferred Acquisition Costs | Minimum
Capitalized Contract Cost [Line Items]
Amortization period for deferred customer contract acquisition and fulfillment costs	3 years
Deferred Acquisition Costs | Maximum
Capitalized Contract Cost [Line Items]
Amortization period for deferred customer contract acquisition and fulfillment costs	5 years
Deferred Fulfillment Costs
Capitalized Contract Cost [Line Items]
Excluded deferred costs	$ 5,746	6,183
Deferred Fulfillment Costs | Prepaid and other current assets
Capitalized Contract Cost [Line Items]
Excluded deferred costs	2,213	2,340
Deferred Fulfillment Costs | Other Assets
Capitalized Contract Cost [Line Items]
Excluded deferred costs	$ 3,533	$ 3,843
Deferred Fulfillment Costs | Minimum
Capitalized Contract Cost [Line Items]
Amortization period for deferred customer contract acquisition and fulfillment costs	3 years
Deferred Fulfillment Costs | Maximum
Capitalized Contract Cost [Line Items]
Amortization period for deferred customer contract acquisition and fulfillment costs	5 years

Revenue Recognition (Deferred C

Revenue Recognition (Deferred Contract Acquisition and Fulfillment Costs) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Deferred Acquisition Costs
Capitalized Contract Cost, Net [Abstract]
Total deferred costs	$ 7,263		$ 7,310
Deferred cost amortization	1,808	$ 1,688
Deferred Acquisition Costs | Prepaid and other current assets
Capitalized Contract Cost, Net [Abstract]
Total deferred costs	3,176		3,233
Deferred Acquisition Costs | Other Assets
Capitalized Contract Cost, Net [Abstract]
Total deferred costs	4,087		4,077
Deferred Fulfillment Costs
Capitalized Contract Cost, Net [Abstract]
Total deferred costs	5,746		6,183
Deferred cost amortization	1,294	$ 1,353
Deferred Fulfillment Costs | Prepaid and other current assets
Capitalized Contract Cost, Net [Abstract]
Total deferred costs	2,213		2,340
Deferred Fulfillment Costs | Other Assets
Capitalized Contract Cost, Net [Abstract]
Total deferred costs	$ 3,533		$ 3,843

Revenue Recognition (Contract A

Revenue Recognition (Contract Assets and Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Capitalized Contract Cost [Line Items]
Contract asset	$ 6,492	$ 6,518
Contract liability	4,155	3,994
Contract liability balance - current portion	3,981	3,778
Prepaid and other current assets
Capitalized Contract Cost [Line Items]
Contract asset balance - current portion	3,661	3,549
Advanced billings and customer deposits
Capitalized Contract Cost [Line Items]
Contract liability balance - current portion	$ 3,857	$ 3,666

Revenue Recognition (Remaining

Revenue Recognition (Remaining Performance Obligations) (Details) $ in Millions	Jun. 30, 2024 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Aggregate amount of the transaction price allocated to remaining performance obligations	$ 38,744
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Aggregate amount of the transaction price allocated to remaining performance obligations (percentage)	72%
Expected timing of satisfaction for remaining performance obligations, period	18 months

Pension And Postretirement Be_4

Pension And Postretirement Benefits (Qualified Pension and Postretirement Benefit Cost) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Defined Benefit Plan Disclosure [Line Items]
Net (credit) cost	$ (470)	$ (745)	$ (941)	$ (1,415)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost – benefits earned during the period	121	122	243	243
Interest Cost on projected/accumulated benefit obligations	397	516	793	1,032
Expected return on assets	552	715	1,105	1,429
Amortization of prior service credit	(22)	(34)	(44)	(67)
Net pension/postretirement (credit) cost	(56)	(111)	(113)	(221)
Actuarial (gain) loss	0	289	0	289
Settlement (gain) loss	0	(363)	0	(363)
Net (credit) cost	(56)	(185)	(113)	(295)
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost – benefits earned during the period	6	6	11	12
Interest Cost on projected/accumulated benefit obligations	78	85	155	170
Expected return on assets	16	33	30	66
Amortization of prior service credit	(482)	(618)	(964)	(1,236)
Net (credit) cost	$ (414)	$ (560)	$ (828)	$ (1,120)

Pension And Postretirement Be_5

Pension And Postretirement Benefits (Net Supplemental Pension Benefits Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Supplemental Retirement and Savings Plans
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (credit) costs	$ 16	$ 18	$ 33	$ 37

Fair Value Measurements And D_3

Fair Value Measurements And Disclosure (Long-Term Debt And Other Financial Instruments) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and debentures	$ 126,253	$ 133,402
Commercial paper	2,693	2,091
Investment securities	2,972	2,836
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and debentures	117,290	128,474
Commercial paper	2,693	2,091
Investment securities	$ 2,972	$ 2,836

Fair Value Measurements And D_4

Fair Value Measurements And Disclosure (Fair Value Leveling) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale Debt Securities	$ 1,169	$ 1,228
Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability Derivatives	(1)	(2)
Cross-currency swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	121	424
Liability Derivatives	(3,794)	(3,601)
Fixed income equities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	208	209
Domestic equities | Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	1,087	1,002
International equities | Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	285	215
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale Debt Securities	0	0
Level 1 | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability Derivatives	0	0
Level 1 | Cross-currency swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	0	0
Liability Derivatives	0	0
Level 1 | Fixed income equities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	208	209
Level 1 | Domestic equities | Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	1,087	1,002
Level 1 | International equities | Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	285	215
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale Debt Securities	1,169	1,228
Level 2 | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability Derivatives	(1)	(2)
Level 2 | Cross-currency swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	121	424
Liability Derivatives	(3,794)	(3,601)
Level 2 | Fixed income equities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	0	0
Level 2 | Domestic equities | Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	0	0
Level 2 | International equities | Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale Debt Securities	0	0
Level 3 | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability Derivatives	0	0
Level 3 | Cross-currency swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	0	0
Liability Derivatives	0	0
Level 3 | Fixed income equities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	0	0
Level 3 | Domestic equities | Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	0	0
Level 3 | International equities | Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	$ 0	$ 0

Fair Value Measurements And D_5

Fair Value Measurements And Disclosure (Gain and Losses on Equity Securities) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Fair Value Disclosures [Abstract]
Total gains (losses) recognized on equity securities	$ 29	$ 82	$ 126	$ 165
Gains (losses) recognized on equity securities sold	(5)	(3)	(8)	1
Unrealized gains (losses) recognized on equity securities held at end of period	$ 34	$ 85	$ 134	$ 164

Fair Value Measurements And D_6

Fair Value Measurements And Disclosure (Narrative) (Details) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Available-for-sale debt securities	$ 1,169,000,000	$ 1,228,000,000
Available-for-sale debt securities - maturities less than 1 year	62,000,000
Available-for-sale debt securities - maturities within 1 to 3 years	192,000,000
Available-for-sale debt securities - maturities within 3 to 5 years	116,000,000
Available-for-sale debt securities - maturities for 5 or more years	799,000,000
Fair Value, Option, Quantitative Disclosures [Line Items]
Anticipated reclassification of holding losses during the next 12 months - cash flow hedges	59,000,000
Collateral submitted to counterparty	680,000,000	670,000,000
Collateral received from counterparty	0	$ 5,000,000
Collateral contingently payable to the counterparty	50,000,000
Measurement Input, Entity Credit Risk
Fair Value, Option, Quantitative Disclosures [Line Items]
Collateral contingently payable to the counterparty	$ 3,594,000,000

Fair Value Measurements And D_7

Fair Value Measurements And Disclosure (Notional Amount Of Our Outstanding Derivative Positions) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Notional amounts of outstanding derivative positions	$ 37,101	$ 39,756
Interest rate swaps
Derivative [Line Items]
Notional amounts of outstanding derivative positions	1,750	1,750
Cross-currency swaps
Derivative [Line Items]
Notional amounts of outstanding derivative positions	$ 35,351	$ 38,006

Fair Value Measurements And D_8

Fair Value Measurements And Disclosure (Effect Of Derivatives On The Consolidated Statements Of Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on interest rate swaps	$ (1)	$ (14)	$ (1)	$ (7)
Gain (loss) on long-term debt	1	14	1	7
Cross-currency swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on interest rate swaps	(178)	389	(424)	769
Gain (loss) on long-term debt	178	(389)	424	(769)
Gain (loss) recognized in accumulated OCI	(325)	222	(70)	40
Gain (loss) recognized in accumulated OCI	0	2	5	(8)
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on interest rate swaps	0	4	0	11
Gain (loss) on long-term debt	0	(4)	0	(11)
Gain (loss) recognized in accumulated OCI	0	(3)	0	(6)
Interest rate locks | Interest income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from accumulated OCI into income	$ (14)	$ (14)	$ (29)	$ (29)

Sales Of Receivables (Summary o

Sales Of Receivables (Summary of Cash Proceeds Received) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net cash received from receivables programs	$ (703)	$ 822	$ (306)	$ 684
Equipment Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net cash received from receivables programs	(674)	(36)	(553)	(60)
Cash proceeds received	2,532	2,656	5,406	5,185
Revolving Receivables Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net cash received from receivables programs	(29)	1,000	247	1,000
Cash proceeds received	4,672	1,000	8,846	1,000
Other Sales of Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net cash received from receivables programs	$ 0	$ (142)	$ 0	$ (256)

Sales Of Receivables (Summary_2

Sales Of Receivables (Summary of Receivables and Accounts) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Equipment Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross receivable	$ 3,194	$ 3,714
Other Assets	962	1,471
Outstanding portfolio of receivables derecognized from our consolidated balance sheets	12,210	12,027
Cash proceeds received, net of remittances	8,947	9,361
Equipment Installment | Notes receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	1,581	1,695
Equipment Installment | Trade receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	651	548
Revolving Receivables Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross receivable	1,260	924
Other Assets	0	0
Outstanding portfolio of receivables derecognized from our consolidated balance sheets	1,800	1,500
Cash proceeds received, net of remittances	1,800	1,500
Revolving Receivables Program | Notes receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	0	0
Revolving Receivables Program | Trade receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 1,260	$ 924

Sales Of Receivables (Finance R

Sales Of Receivables (Finance Receivables Sold) (Details) - Equipment Installment - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross receivables sold	$ 2,557	$ 2,687	$ 5,461	$ 5,247
Net receivables sold	2,438	2,554	5,195	4,992
Cash proceeds received	2,532	2,656	5,406	5,185
Guarantee obligation recorded	$ 217	$ 242	$ 483	$ 448

Sales Of Receivables (Finance_2

Sales Of Receivables (Finance Receivables Repurchased) (Details) - Equipment Installment - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of repurchased receivables	$ 724	$ 765	$ 1,442	$ 1,306
Carrying value of beneficial interests	743	769	1,464	1,311
Gain on repurchases	$ (19)	$ (4)	$ (22)	$ (5)

Sales Of Receivables (Revolving

Sales Of Receivables (Revolving Receivables Sold) (Details) - Revolving Receivables Program - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross receivables sold/cash proceeds received	$ 4,672	$ 1,000	$ 8,846	$ 1,000
Total collections under revolving agreement	4,672	0	8,546	0
Net cash proceeds received	0	1,000	300	1,000
Net receivables sold	4,549	982	8,612	982
Initial sale of receivables	$ 0	$ 1,000	$ 300	$ 1,000

Sales Of Receivables (Equipment

Sales Of Receivables (Equipment Installment and AT&T Revolving Programs) (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, Fair Value Disclosure		$ 1,260
Equipment Installment | Guarantee Obligation
Accounts, Notes, Loans and Financing Receivable [Line Items]
Guarantee obligation		299	$ 385
Equipment Installment | Accounts payable and accrued liabilities | Guarantee Obligation
Accounts, Notes, Loans and Financing Receivable [Line Items]
Guarantee obligation		106	111
Equipment Installment | Deferred Purchase Price Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred purchase price receivable		2,764	2,270
Equipment Installment | Deferred Purchase Price Receivable | Prepaid and other current assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred purchase price receivable		$ 1,639	$ 1,296
Revolving Receivables Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revolving agreement, transfer amount (up to)	$ 1,800

Transactions with DIRECTV (Deta

Transactions with DIRECTV (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Related Party Transaction [Line Items]
Equity in net income of affiliates	$ 348	$ 380	$ 643	$ 918
DIRECTV | Equity Method Investee [Member]
Related Party Transaction [Line Items]
Equity in net income of affiliates	350	377	674	911
Proceeds from Equity Method Investment, Distribution	742	577	1,260	1,885
Operating Activities [Member] | DIRECTV | Equity Method Investee [Member]
Related Party Transaction [Line Items]
Proceeds from Equity Method Investment, Distribution	350	377	674	911
Investing Activities [Member] | DIRECTV | Equity Method Investee [Member]
Related Party Transaction [Line Items]
Proceeds from Equity Method Investment, Distribution	$ 392	$ 200	$ 586	$ 974

Transactions with DIRECTV (Narr

Transactions with DIRECTV (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
Investments in and Advances to Equity Affiliates	$ 584	$ 584	$ 1,251
Accounts Receivable, Related Parties	9,686	9,686	$ 10,289
Commercial Arrangements and Transition Service Agreements | Equity Method Investee [Member]
Related Party Transaction [Line Items]
Operations And Support Expenses	134	279
DIRECTV | Equity Method Investee [Member]
Related Party Transaction [Line Items]
Investments in and Advances to Equity Affiliates	293	293
Accounts Receivable, Related Parties	247	247
Accounts Payable, Related Parties	$ 50	$ 50

Supplier and Vendor Financing_2

Supplier and Vendor Financing Programs (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Supplier Financing Program
Other Significant Noncash Transactions [Line Items]
Supplier financing program obligations	$ 3,059		$ 2,844
Direct Supplier Financing Program
Other Significant Noncash Transactions [Line Items]
Supplier financing program obligations	3,432		5,442
Vendor Financing Program
Other Significant Noncash Transactions [Line Items]
Vendor financing commitments	523	$ 1,341
Vendor financing payables	1,827		2,833
Vendor financing payables, current	$ 883		$ 1,975

Additional Financial Informat_3

Additional Financial Information (Cash and Cash Equivalents and Restricted Cash Balances) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	$ 3,093	$ 6,722	$ 9,528	$ 3,701
Restricted cash in Prepaid and other current assets	1	2	1	1
Restricted cash in Other Assets	109	109	93	91
Cash and Cash Equivalents and Restricted Cash	$ 3,203	$ 6,833	$ 9,622	$ 3,793

Additional Financial Informat_4

Additional Financial Information (Summary of Cash Paid for Interest and Taxes) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash paid (received) during the period for:
Interest	$ 3,644	$ 3,604
Income taxes, net of refunds	299	335
Payments to Acquire Property, Plant and Equipment	8,118	8,605
Interest during construction	199	537
Acquisitions	270	515
Business acquisitions
Cash paid (received) during the period for:
Acquisitions	0	0
Spectrum Licenses
Cash paid (received) during the period for:
Acquisitions	147	68
Interest during construction	123	447
Property, Plant and Equipment [Member]
Cash paid (received) during the period for:
Payments to Acquire Property, Plant and Equipment	8,042	8,515
Interest during construction	$ 76	$ 90