AT&T (T) 10-Q 5 Nov 20 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares shares in Millions	9 Months Ended
	Sep. 30, 2020	Oct. 31, 2020
Entity Listings [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Document Transition Report	false
Entity File Number	001-8610
Entity Registrant Name	AT&T INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	43-1301883
Entity Address, Address Line One	208 S. Akard St.
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75202
City Area Code	210
Local Phone Number	821-4105
Entity 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		7,126
Amendment Flag	false
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2020
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. 1.875% Global Notes due December 4, 2020
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.875% Global Notes due December 4, 2020
Trading Symbol	T 20
Security Exchange Name	NYSE
AT&T Inc. 2.650% Global Notes due December 17, 2021
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.650% Global Notes due December 17, 2021
Trading Symbol	T 21B
Security Exchange Name	NYSE
AT&T Inc. 1.450% Global Notes due June 1, 2022
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.450% Global Notes due June 1, 2022
Trading Symbol	T 22B
Security Exchange Name	NYSE
AT&T Inc. 2.500% Global Notes due March 15, 2023
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.500% Global Notes due March 15, 2023
Trading Symbol	T 23
Security Exchange Name	NYSE
AT&T Inc. 2.750% Global Notes due May 19, 2023
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.750% Global Notes due May 19, 2023
Trading Symbol	T 23C
Security Exchange Name	NYSE
AT&T Inc. Floating Rate Global Notes due September 5, 2023
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. Floating Rate Global Notes due September 5, 2023
Trading Symbol	T 23D
Security Exchange Name	NYSE
AT&T Inc. 1.050% Global Notes due September 5, 2023
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.050% Global Notes due September 5, 2023
Trading Symbol	T 23E
Security Exchange Name	NYSE
AT&T Inc. 1.300% Global Notes due September 5, 2023
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.300% Global Notes due September 5, 2023
Trading Symbol	T 23A
Security Exchange Name	NYSE
AT&T Inc. 1.950% Global Notes due September 15, 2023
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.950% Global Notes due September 15, 2023
Trading Symbol	T 23F
Security Exchange Name	NYSE
AT&T Inc. 2.400% Global Notes due March 15, 2024
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.400% Global Notes due March 15, 2024
Trading Symbol	T 24A
Security Exchange Name	NYSE
AT&T Inc. 3.500% Global Notes due December 17, 2025
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 3.500% Global Notes due December 17, 2025
Trading Symbol	T 25
Security Exchange Name	NYSE
AT&T Inc. 0.250% Global Notes due March 4, 2026
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 0.250% Global Notes due March 4, 2026
Trading Symbol	T 26E
Security Exchange Name	NYSE
AT&T Inc. 1.800% Global Notes due September 5, 2026
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.800% Global Notes due September 5, 2026
Trading Symbol	T 26D
Security Exchange Name	NYSE
AT&T Inc. 2.900% Global Notes due December 4, 2026
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.900% Global Notes due December 4, 2026
Trading Symbol	T 26A
Security Exchange Name	NYSE
AT&T Inc. 1.600% Global Notes due May 19, 2028
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.600% Global Notes due May 19, 2028
Trading Symbol	T 28C
Security Exchange Name	NYSE
AT&T Inc. 2.350% Global Notes due September 5, 2029
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.350% Global Notes due September 5, 2029
Trading Symbol	T 29D
Security Exchange Name	NYSE
AT&T Inc. 4.375% Global Notes due September 14, 2029
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 4.375% Global Notes due September 14, 2029
Trading Symbol	T 29B
Security Exchange Name	NYSE
AT&T Inc. 2.600% Global Notes due December 17, 2029
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.600% Global Notes due December 17, 2029
Trading Symbol	T 29A
Security Exchange Name	NYSE
AT&T Inc. 0.800% Global Notes due March 4, 2030
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 0.800% Global Notes due March 4, 2030
Trading Symbol	T 30B
Security Exchange Name	NYSE
AT&T Inc. 2.050% Global Notes due May 19, 2032
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.050% Global Notes due May 19, 2032
Trading Symbol	T 32A
Security Exchange Name	NYSE
AT&T Inc. 3.550% Global Notes due December 17, 2032
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 3.550% Global Notes due December 17, 2032
Trading Symbol	T 32
Security Exchange Name	NYSE
AT&T Inc. 5.200% Global Notes due November 18, 2033
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 5.200% Global Notes due November 18, 2033
Trading Symbol	T 33
Security Exchange Name	NYSE
AT&T Inc. 3.375% Global Notes due March 15, 2034
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 3.375% Global Notes due March 15, 2034
Trading Symbol	T 34
Security Exchange Name	NYSE
AT&T Inc. 2.450% Global Notes due March 15, 2035
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.450% Global Notes due March 15, 2035
Trading Symbol	T 35
Security Exchange Name	NYSE
AT&T Inc. 3.150% Global Notes due September 4, 2036
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 3.150% Global Notes due September 4, 2036
Trading Symbol	T 36A
Security Exchange Name	NYSE
AT&T Inc. 2.600% Global Notes due May 19, 2038
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 2.600% Global Notes due May 19, 2038
Trading Symbol	T 38C
Security Exchange Name	NYSE
AT&T Inc. 1.800% Global Notes due September 14, 2039
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 1.800% Global Notes due September 14, 2039
Trading Symbol	T 39B
Security Exchange Name	NYSE
AT&T Inc. 7.000% Global Notes due April 30, 2040
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 7.000% Global Notes due April 30, 2040
Trading Symbol	T 40
Security Exchange Name	NYSE
AT&T Inc. 4.250% Global Notes due June 1, 2043
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 4.250% Global Notes due June 1, 2043
Trading Symbol	T 43
Security Exchange Name	NYSE
AT&T Inc. 4.875% Global Notes due June 1, 2044
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 4.875% Global Notes due June 1, 2044
Trading Symbol	T 44
Security Exchange Name	NYSE
AT&T Inc. 4.000% Global Notes due June 1, 2049
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 4.000% Global Notes due June 1, 2049
Trading Symbol	T 49A
Security Exchange Name	NYSE
AT&T Inc. 4.250% Global Notes due March 1, 2050
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 4.250% Global Notes due March 1, 2050
Trading Symbol	T 50
Security Exchange Name	NYSE
AT&T Inc. 3.750% Global Notes due September 1, 2050
Entity Listings [Line Items]
Title of 12(b) Security	AT&T Inc. 3.750% Global Notes due September 1, 2050
Trading Symbol	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		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating Revenues
Total operating revenues	$ 42,340	$ 44,588	$ 126,069	$ 134,372
Cost of revenues
Other cost of revenues (exclusive of depreciation and amortization shown separately below)	8,375	8,604	24,833	25,910
Selling, general and administrative	9,266	9,584	27,857	29,077
Asset impairments and abandonments	73	0	2,515	0
Depreciation and amortization	7,030	6,949	21,537	21,256
Total operating expenses	36,208	36,687	108,919	111,738
Operating Income	6,132	7,901	17,150	22,634
Other Income (Expense)
Interest expense	(1,972)	(2,083)	(6,031)	(6,373)
Equity in net income (loss) of affiliates	5	3	(11)	36
Other income (expense) — net	(231)	(935)	1,589	(967)
Total other income (expense)	(2,198)	(3,015)	(4,453)	(7,304)
Income Before Income Taxes	3,934	4,886	12,697	15,330
Income tax expense	766	937	3,003	3,059
Net Income	3,168	3,949	9,694	12,271
Less: Net Income Attributable to Noncontrolling Interest	(352)	(249)	(987)	(762)
Net Income Attributable to AT&T	2,816	3,700	8,707	11,509
Less: Preferred Stock Dividends	(54)	0	(138)	0
Net Income Attributable to Common Stock	$ 2,762	$ 3,700	$ 8,569	$ 11,509
Basic Earnings Per Share Attributable to Common Stock (in dollars per share)	$ 0.39	$ 0.50	$ 1.19	$ 1.57
Diluted Earnings Per Share Attributable to Common Stock (in dollars per share)	$ 0.39	$ 0.50	$ 1.19	$ 1.57
Weighted Average Number of Common Shares Outstanding - Basic (in millions) (in shares)	7,147	7,327	7,160	7,321
Weighted Average Number of Common Shares Outstanding - with Dilution (in millions) (in shares)	7,173	7,356	7,186	7,350
Service
Operating Revenues
Total operating revenues	$ 37,782	$ 40,317	$ 113,716	$ 122,024
Equipment
Operating Revenues
Total operating revenues	4,558	4,271	12,353	12,348
Cost of revenues
Cost of goods and services sold	4,552	4,484	12,622	13,047
Broadcast, programming and operations
Cost of revenues
Cost of goods and services sold	$ 6,912	$ 7,066	$ 19,555	$ 22,448

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 3,168	$ 3,949	$ 9,694	$ 12,271
Foreign currency:
Translation adjustment (includes $(2), $(17), $(61) and $(15) attributable to noncontrolling interest), net of taxes of $47, $(69), $(150) and $(21)	90	(342)	(1,459)	(181)
Securities:
Net unrealized gains (losses), net of taxes of $1, $7, $28 and $22	1	25	81	67
Derivative instruments:
Net unrealized gains (losses), net of taxes of $229, $(168), $(574) and $(299)	860	(516)	(2,166)	(1,006)
Reclassification adjustment included in net income, net of taxes of $7, $2, $11 and $7	27	7	44	24
Defined benefit postretirement plans:
Amortization of net prior service credit included in net income, net of taxes of $(150), $(112), $(451) and $(332)	(460)	(343)	(1,382)	(1,031)
Other comprehensive income (loss)	518	(1,169)	(4,882)	(2,127)
Total comprehensive income	3,686	2,780	4,812	10,144
Less: Total comprehensive income attributable to noncontrolling interest	(350)	(232)	(926)	(747)
Total Comprehensive Income Attributable to AT&T	$ 3,336	$ 2,548	$ 3,886	$ 9,397

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustments, attributable to noncontrolling interest, net of taxes	$ (2)	$ (17)	$ (61)	$ (15)
Foreign currency translation adjustments, tax effect	47	(69)	(150)	(21)
Unrealized gains (losses) on securities - tax effect	1	7	28	22
Unrealized gains (losses) on derivatives - tax effect	229	(168)	(574)	(299)
Reclassification adjustment included in net income on derivatives - tax effect	7	2	11	7
Amortization of net prior service credit included in net income, tax effect	$ (150)	$ (112)	$ (451)	$ (332)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current Assets
Cash and cash equivalents	$ 9,758	$ 12,130
Accounts receivable — net of related allowances for credit loss of $1,386 and $1,235	19,379	22,636
Prepaid expenses	1,420	1,631
Other current assets	19,414	18,364
Total current assets	49,971	54,761
Noncurrent Inventories and Theatrical Film and Television Production Costs	13,948	12,434
Property, plant and equipment	333,797	333,538
Less: accumulated depreciation and amortization	(205,075)	(203,410)
Property, Plant and Equipment — Net	128,722	130,128
Goodwill	143,688	146,241
Licenses — Net	98,397	97,907
Other Intangible Assets — Net	17,523	20,798
Investments in and Advances to Equity Affiliates	2,325	3,695
Operating Lease Right-Of-Use Assets	24,546	24,039
Other Assets	21,609	22,754
Total Assets	538,553	551,669
Current Liabilities
Debt maturing within one year	5,898	11,838
Accounts payable and accrued liabilities	42,728	45,956
Advanced billings and customer deposits	5,862	6,124
Accrued taxes	1,336	1,212
Dividends payable	3,741	3,781
Total current liabilities	59,565	68,911
Long-Term Debt	152,980	151,309
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	60,448	59,502
Postemployment benefit obligation	17,928	18,788
Operating lease liabilities	22,056	21,804
Other noncurrent liabilities	30,520	29,421
Total deferred credits and other noncurrent liabilities	130,952	129,515
Stockholders’ Equity
Common stock ($1 par value, 14,000,000,000 authorized at September 30, 2020 and December 31, 2019: issued 7,620,748,598 at September 30, 2020 and December 31, 2019)	7,621	7,621
Additional paid-in capital	130,139	126,279
Retained earnings	55,094	57,936
Treasury stock (495,703,331 at September 30, 2020 and 366,193,458 at December 31, 2019, at cost)	(17,950)	(13,085)
Accumulated other comprehensive income	649	5,470
Noncontrolling interest	19,503	17,713
Total stockholders’ equity	195,056	201,934
Total Liabilities and Stockholders’ Equity	538,553	551,669
Series A (48,000 issued and outstanding at September 30, 2020 and December 31, 2019)
Stockholders’ Equity
Preferred stock ($1 par value, 10,000,000 authorized):	0	0
Series B (20,000 issued and outstanding at September 30, 2020 and 0 issued and outstanding at December 31, 2019)
Stockholders’ Equity
Preferred stock ($1 par value, 10,000,000 authorized):	0	0
Series C (70,000 issued and outstanding at September 30, 2020 and 0 issued and outstanding at December 31, 2019)
Stockholders’ Equity
Preferred stock ($1 par value, 10,000,000 authorized):	0	0
Trademarks and Trade Names — Net
Current Assets
Finite-Lived Intangible Assets - Net	23,575	23,567
Distribution Networks — Net
Current Assets
Finite-Lived Intangible Assets - Net	$ 14,249	$ 15,345

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Allowances for doubtful accounts	$ 1,386	$ 1,235
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)	495,703,331	366,193,458
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	0
Preferred stock, outstanding (in shares)	20,000	0
Preferred Stock - Series C
Preferred stock, issued (in shares)	70,000	0
Preferred stock, outstanding (in shares)	70,000	0

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Operating Activities
Net income	$ 9,694	$ 12,271
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	21,537	21,256
Amortization of television and film costs	6,448	7,059
Undistributed earnings from investments in equity affiliates	108	81
Provision for uncollectible accounts	1,611	1,855
Deferred income tax expense	2,248	1,039
Net (gain) loss on investments, net of impairments	(689)	(1,014)
Pension and postretirement benefit expense (credit)	(2,245)	(1,297)
Actuarial (gain) loss on pension and postretirement benefits	63	4,048
Asset impairments and abandonments	2,515	0
Changes in operating assets and liabilities:
Receivables	2,321	2,503
Other current assets, inventories and theatrical film and television production costs	(7,836)	(9,337)
Accounts payable and other accrued liabilities	(4,905)	(936)
Equipment installment receivables and related sales	(148)	848
Deferred customer contract acquisition and fulfillment costs	453	(796)
Postretirement claims and contributions	(409)	(635)
Other - net	2,282	(220)
Total adjustments	23,354	24,454
Net Cash Provided by Operating Activities	33,048	36,725
Investing Activities
Capital expenditures, including $(92) and $(160) of interest during construction	(13,283)	(15,843)
Acquisitions, net of cash acquired	(1,215)	(1,124)
Dispositions	428	3,775
(Purchases), sales and settlements of securities and investments, net	444	523
Advances to and investments in equity affiliates, net	(100)	(333)
Net Cash Used in Investing Activities	(13,726)	(13,002)
Financing Activities
Net change in short-term borrowings with original maturities of three months or less	(17)	(22)
Issuance of other short-term borrowings	9,440	4,012
Repayment of other short-term borrowings	(7,710)	(4,702)
Issuance of long-term debt	31,987	15,034
Repayment of long-term debt	(37,583)	(24,368)
Payment of vendor financing	(1,965)	(2,601)
Issuance of preferred stock	3,869	0
Purchase of treasury stock	(5,483)	(409)
Issuance of treasury stock	88	576
Issuance of preferred interests in subsidiary	1,979	1,488
Dividends paid	(11,215)	(11,162)
Other - net	(5,158)	(187)
Net Cash Used in Financing Activities	(21,768)	(22,341)
Net (decrease) increase in cash and cash equivalents and restricted cash	(2,446)	1,382
Cash and cash equivalents and restricted cash beginning of year	12,295	5,400
Cash and Cash Equivalents and Restricted Cash End of Period	$ 9,849	$ 6,782

Consolidated Statements Of Ca_2

Consolidated Statements Of Cash Flows (Parenthetical) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Statement of Cash Flows [Abstract]
Capital expenditures, interest during construction	$ (92)	$ (160)

Consolidated Statement Of Chang

Consolidated Statement Of Changes In Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Preferred StockPreferred Stock - Series A	Preferred StockPreferred Stock - Series B	Preferred StockPreferred Stock - Series C	Common Stock	Additional Paid-In Capital	Additional Paid-In CapitalPreferred Stock	Additional Paid-In CapitalCommon Stock	Retained Earnings	Retained EarningsCumulative effect of accounting change and other adjustments	Retained EarningsAdjusted beginning balance	Treasury Stock	Accumulated Other Comprehensive Income Attributable to AT&T, net of tax	Noncontrolling Interest	Noncontrolling InterestCumulative effect of accounting change and other adjustments	Noncontrolling InterestAdjusted beginning balance
Balance at beginning of period at Dec. 31, 2018	$ 193,884	$ 0	$ 0	$ 0	$ 7,621	$ 125,525			$ 58,753	$ 316	$ 59,069	$ (12,059)	$ 4,249	$ 9,795	$ 29	$ 9,824
Balance at beginning of period (in shares) at Dec. 31, 2018		0	0	0	7,621							(339)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase and acquisition of common stock								$ 0
Issuance of stock		$ 0	$ 0	$ 0	$ 0		$ 0
Issuance of stock (in shares)		0	0	0	0
Repurchase and acquisition of common stock												$ (466)
Repurchase and acquisition of common stock (in shares)												(14)
Issuance of treasury stock						(128)						$ 1,330
Issuance of treasury stock, (in shares)												36
Share-based payments						(258)
Changes related to acquisition of interests held by noncontrolling owners						0
Net income attributable to AT&T	11,509								11,509
Preferred stock dividends									0
Common stock dividends ( $0.52, $0.51, $1.56, and $1.53 per share)									(11,231)
Other comprehensive income attributable to AT&T	(2,112)												(2,112)
Net income attributable to noncontrolling interest	762													762
Issuance and acquisition of noncontrolling owners														1,498
Distributions														(791)
Translation adjustments attributable to noncontrolling interest, net of taxes	(15)													(15)
Balance at end of period at Sep. 30, 2019	194,327	$ 0	$ 0	$ 0	$ 7,621	125,139			59,347			$ (11,195)	2,137	11,278
Balance at end of period (in shares) at Sep. 30, 2019		0	0	0	7,621							(317)
Balance at beginning of period at Jun. 30, 2019	194,081	$ 0	$ 0	$ 0	$ 7,621	125,109			59,389	0	59,389	$ (11,151)	3,289	9,824	0	9,824
Balance at beginning of period (in shares) at Jun. 30, 2019		0	0	0	7,621							(316)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase and acquisition of common stock								0
Issuance of stock		$ 0	$ 0	$ 0	$ 0		0
Issuance of stock (in shares)		0	0	0	0
Repurchase and acquisition of common stock												$ (186)
Repurchase and acquisition of common stock (in shares)												(5)
Issuance of treasury stock						(1)						$ 142
Issuance of treasury stock, (in shares)												4
Share-based payments						31
Changes related to acquisition of interests held by noncontrolling owners						0
Net income attributable to AT&T	3,700								3,700
Preferred stock dividends									0
Common stock dividends ( $0.52, $0.51, $1.56, and $1.53 per share)									(3,742)
Other comprehensive income attributable to AT&T													(1,152)
Net income attributable to noncontrolling interest	249													249
Issuance and acquisition of noncontrolling owners														1,488
Distributions														(266)
Translation adjustments attributable to noncontrolling interest, net of taxes	(17)													(17)
Balance at end of period at Sep. 30, 2019	194,327	$ 0	$ 0	$ 0	$ 7,621	125,139			59,347			$ (11,195)	2,137	11,278
Balance at end of period (in shares) at Sep. 30, 2019		0	0	0	7,621							(317)
Balance at beginning of period at Dec. 31, 2019	201,934	$ 0	$ 0	$ 0	$ 7,621	126,279			57,936	(293)	57,643	$ (13,085)	5,470	17,713	(7)	17,706
Balance at beginning of period (in shares) at Dec. 31, 2019		0	0	0	7,621							(366)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase and acquisition of common stock								67
Issuance of stock		$ 0	$ 0	$ 0	$ 0		3,869
Issuance of stock (in shares)		0	0	0	0
Repurchase and acquisition of common stock												$ (5,600)
Repurchase and acquisition of common stock (in shares)												(149)
Issuance of treasury stock						(56)						$ 735
Issuance of treasury stock, (in shares)												19
Share-based payments						(24)
Changes related to acquisition of interests held by noncontrolling owners						4
Net income attributable to AT&T	8,707								8,707
Preferred stock dividends									(103)
Common stock dividends ( $0.52, $0.51, $1.56, and $1.53 per share)									(11,153)
Other comprehensive income attributable to AT&T	(4,821)												(4,821)
Net income attributable to noncontrolling interest	987													987
Issuance and acquisition of noncontrolling owners														1,979
Distributions														(1,108)
Translation adjustments attributable to noncontrolling interest, net of taxes	(61)													(61)
Balance at end of period at Sep. 30, 2020	195,056	$ 0	$ 0	$ 0	$ 7,621	130,139			55,094			$ (17,950)	649	19,503
Balance at end of period (in shares) at Sep. 30, 2020		0	0	0	7,621							(496)
Balance at beginning of period at Jun. 30, 2020	193,453	$ 0	$ 0	$ 0	$ 7,621	130,046			56,045	$ 0	$ 56,045	$ (17,945)	129	17,557	$ 0	$ 17,557
Balance at beginning of period (in shares) at Jun. 30, 2020		0	0	0	7,621							(495)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase and acquisition of common stock								$ 0
Issuance of stock		$ 0	$ 0	$ 0	$ 0		$ 0
Issuance of stock (in shares)		0	0	0	0
Repurchase and acquisition of common stock												$ (19)
Repurchase and acquisition of common stock (in shares)												(1)
Issuance of treasury stock						(2)						$ 14
Issuance of treasury stock, (in shares)												0
Share-based payments						91
Changes related to acquisition of interests held by noncontrolling owners						4
Net income attributable to AT&T	2,816								2,816
Preferred stock dividends									(35)
Common stock dividends ( $0.52, $0.51, $1.56, and $1.53 per share)									(3,732)
Other comprehensive income attributable to AT&T													520
Net income attributable to noncontrolling interest	352													352
Issuance and acquisition of noncontrolling owners														1,978
Distributions														(382)
Translation adjustments attributable to noncontrolling interest, net of taxes	(2)													(2)
Balance at end of period at Sep. 30, 2020	$ 195,056	$ 0	$ 0	$ 0	$ 7,621	$ 130,139			$ 55,094			$ (17,950)	$ 649	$ 19,503
Balance at end of period (in shares) at Sep. 30, 2020		0	0	0	7,621							(496)

Consolidated Statement Of Cha_2

Consolidated Statement Of Changes In Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Stockholders' Equity [Abstract]
Dividends to stockholders, per share (in dollars per share)	$ 0.52	$ 0.51	$ 1.56	$ 1.53

Preparation Of Interim Financia

Preparation Of Interim Financial Statements	9 Months Ended
	Sep. 30, 2020
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, media 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, 2019. 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 for periods ended within up to one quarter of our period end. We also record our proportionate share of our equity method investees’ other comprehensive income (OCI) items. The preparation of financial statements in conformity with U.S. generally accepted accounting principles (GAAP) requires management to make estimates and assumptions, including potential impacts arising from the COVID-19 pandemic, that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Certain prior period amounts have been conformed to the current period’s presentation, including the combination of our prior Xandr segment with the WarnerMedia segment. In the tables throughout this document, percentage increases and decreases that are not considered meaningful are denoted with a dash. Adopted and Pending Accounting Standards and Other Changes Credit Losses As of January 1, 2020, we adopted, through modified retrospective application, the Financial Accounting Standards Board’s (FASB) Accounting Standards Update (ASU) No. 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (ASU 2016-13, as amended), which replaces the incurred loss impairment methodology under prior GAAP with an expected credit loss model. ASU 2016-13 affects trade receivables, loans, contract assets, certain beneficial interests, off-balance-sheet credit exposures not accounted for as insurance and other financial assets that are not subject to fair value through net income, as defined by the standard. Under the expected credit loss model, we are required to consider future economic trends to estimate expected credit losses over the lifetime of the asset. Upon adoption, we recorded a $293 reduction to “Retained earnings,” $395 increase to “allowances for doubtful accounts” applicable to our trade and loan receivables, $10 reduction of contract assets, $105 reduction of net deferred income tax liability and $7 reduction of “Noncontrolling interest” as an opening adjustment. Our adoption of ASU 2016-13 did not have a material impact on our financial statements. Reference Rate Reform In March 2020, the FASB issued ASU No. 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting” (ASU 2020-04), which provides optional expedients, and allows for certain exceptions to existing GAAP, for contract modifications triggered by the expected market transition of certain benchmark interest rates to alternative reference rates. ASU 2020-04 applies to contracts, hedging relationships and other arrangements that reference the London Interbank Offering Rate (LIBOR) or any other rates ending after December 31, 2022. We are evaluating the impact of our adoption of ASU 2020-04, including optional expedients, to our financial statements. Convertible Instruments In August 2020, the FASB issued 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), which eliminated certain separation models regarding cash conversion and beneficial conversion features to simplify reporting for convertible instruments as a single liability or equity, with no separate accounting for embedded conversion features. ASU 2020-06 will be effective for fiscal years beginning after December 31, 2021, under modified retrospective or full retrospective application, subject to early adoption in 2021. We are evaluating the impact of our adoption of ASU 2020-06 on our financial statements. Intangible Assets In the second quarter, driven by significant and adverse economic and political environments in Latin America, including the impact of the COVID-19 pandemic, we experienced accelerated subscriber losses and revenue decline in the region, as well as closure of our operations in Venezuela. When combining these business trends and higher weighted-average cost of capital resulting from the increase in country-risk premiums in the region, we concluded that it is more likely than not that the fair value of the Vrio reporting unit, estimated using discounted cash flow and market multiple approaches, is less than its carrying amount. We recorded a $2,212 goodwill impairment in the reporting unit in the second quarter, with $105 attributable to noncontrolling interest. The impairment is not deductible for tax purposes and resulted in an increase in our effective tax rate. During the first quarter of 2020, we reassessed and changed the estimated economic lives of certain trade names in our Latin America business from indefinite to finite-lived and began amortizing them using the straight-line method over their average remaining economic life of 15 years. This change had an insignificant impact on our financial statements. Also during the first quarter of 2020, in conjunction with the nationwide launch of AT&T TV and our customers’ continued shift from linear to streaming video services, we reassessed the estimated economic lives and renewal assumptions for our orbital slot licenses. As a result, we have changed the estimated lives of these licenses from indefinite to finite-lived, effective January 1, 2020, and began amortizing our orbital slot licenses using the sum-of-months-digits method over their average remaining economic life of 15 years. This change in accounting increased amortization expense $373, or $0.04 per diluted share available to common stock during the third quarter and $1,138, or $0.12, per diluted share available to common stock for the first nine months of 2020.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2020
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 for the three and nine months ended September 30, 2020 and 2019, is shown in the table below. Three months ended Nine months ended September 30, September 30, 2020 2019 2020 2019 Numerators Numerator for basic earnings per share: Net Income $ 3,168 $ 3,949 $ 9,694 $ 12,271 Less: Net income attributable to noncontrolling interest (352) (249) (987) (762) Net Income attributable to AT&T 2,816 3,700 8,707 11,509 Less: Preferred stock dividends (54) — (138) — Net income attributable to common stock 2,762 3,700 8,569 11,509 Dilutive potential common shares: Share-based payment 5 6 16 16 Numerator for diluted earnings per share $ 2,767 $ 3,706 $ 8,585 $ 11,525 Denominators (000,000) Denominator for basic earnings per share: Weighted average number of common shares outstanding 7,147 7,327 7,160 7,321 Dilutive potential common shares: Share-based payment (in shares) 26 29 26 29 Denominator for diluted earnings per share 7,173 7,356 7,186 7,350 Basic earnings per share attributable to Common Stock $ 0.39 $ 0.50 $ 1.19 $ 1.57 Diluted earnings per share attributable to Common Stock $ 0.39 $ 0.50 $ 1.19 $ 1.57

Other Comprehensive Income

Other Comprehensive Income	9 Months Ended
	Sep. 30, 2020
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 and exclude noncontrolling interest. 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 Balance as of December 31, 2019 $ (3,056) $ 48 $ (37) $ 8,515 $ 5,470 Other comprehensive income (loss) before reclassifications (1,398) 81 (2,166) — (3,483) Amounts reclassified from accumulated OCI — 1 — 1 44 2 (1,382) 3 (1,338) Net other comprehensive income (loss) (1,398) 81 (2,122) (1,382) (4,821) Balance as of September 30, 2020 $ (4,454) $ 129 $ (2,159) $ 7,133 $ 649 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 Balance as of December 31, 2018 $ (3,084) $ (2) $ 818 $ 6,517 $ 4,249 Other comprehensive income (loss) before reclassifications (166) 67 (1,006) — (1,105) Amounts reclassified from accumulated OCI — 1 — 1 24 2 (1,031) 3 (1,007) Net other comprehensive income (loss) (166) 67 (982) (1,031) (2,112) Balance as of September 30, 2019 $ (3,250) $ 65 $ (164) $ 5,486 $ 2,137 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	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Segment Information	NOTE 4. SEGMENT INFORMATION Our segments are strategic business units that offer products and services to different customer segments over various technology platforms and/or in different geographies that are managed accordingly. We analyze our segments based on segment operating contribution, which consists of operating income, excluding acquisition-related costs and other significant items (as discussed below), and equity in net income (loss) of affiliates for investments managed within each segment. We have three reportable segments: (1) Communications, (2) WarnerMedia and (3) Latin America. We have recast our segment results for all prior periods to include our prior Xandr segment within our WarnerMedia segment. We also evaluate segment and business unit performance based on EBITDA and/or EBITDA margin, which is defined as operating contribution excluding equity in net income (loss) of affiliates and depreciation and amortization. We believe EBITDA to be a relevant and useful measurement to our investors as it is part of our internal management reporting and planning processes and it is an important metric that management uses to evaluate operating performance. EBITDA does not give effect to 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 revenues. The Communications segment provides wireless and wireline telecom, video and broadband services to consumers located in the U.S. and businesses globally. This segment contains the following business units: • Mobility provides nationwide wireless service and equipment. • Entertainment Group provides video, including over-the-top (OTT) services, broadband and voice communications services primarily to residential customers. This segment also records advertising revenue. • Business Wireline provides advanced IP-based services, as well as traditional voice and data services to business customers. The WarnerMedia segment develops, produces and distributes feature films, television, gaming and other content in various physical and digital formats globally. Historical financial results from Xandr, previously a separate reportable segment, have been combined with the WarnerMedia segment within Eliminations and other. This segment contains the following: • Turner primarily operates multichannel basic television networks and digital properties. Turner also sells advertising on its networks and digital properties. • Home Box Office consists of premium pay television and OTT and streaming services domestically and premium pay, basic tier television and OTT services internationally, as well as content licensing and home entertainment. • Warner Bros. primarily consists of the production, distribution and licensing of television programming and feature films, the distribution of home entertainment products and the production and distribution of games. • Eliminations & Other includes the Xandr advertising business and Otter Media Holdings operations, and also removes transactions between the Turner, Home Box Office and Warner Bros. business units, including internal sales of content to the HBO Max platform that began in the fourth quarter of 2019 (see Note 5). The Latin America segment provides entertainment and wireless services outside of the U.S. This segment contains the following business units: • Vrio provides video services primarily to residential customers using satellite technology in Latin America and the Caribbean. • Mexico provides wireless service and equipment to customers in Mexico. Corporate and Other reconciles our segment results to consolidated operating income and income before income taxes, and includes: • Corporate , which consists of: (1) businesses no longer integral to our operations or which we no longer actively market, (2) corporate support functions, (3) impacts of corporate-wide decisions for which the individual operating segments are not being evaluated, and (4) the reclassification of the amortization of prior service credits, which we continue to report with segment operating expenses, to consolidated “Other income (expense) – net.” • Acquisition-related items , which consists of items associated with the merger and integration of acquired businesses, including amortization of intangible assets • Certain significant items , which includes (1) employee separation charges associated with voluntary and/or strategic offers, (2) losses resulting from abandonment of network assets and impairments, and (3) other items for which the segments are not being evaluated. • Eliminations and consolidations , which (1) removes transactions involving dealings between our segments, including channel distribution between WarnerMedia and Communications, and (2) includes adjustments for our reporting of the advertising business. “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 September 30, 2020 Revenues Operations EBITDA Depreciation Operating Equity in Net Segment Communications Mobility $ 17,894 $ 10,182 $ 7,712 $ 2,021 $ 5,691 $ — $ 5,691 Entertainment Group 10,053 7,997 2,056 1,277 779 — 779 Business Wireline 6,340 3,833 2,507 1,329 1,178 — 1,178 Total Communications 34,287 22,012 12,275 4,627 7,648 — 7,648 WarnerMedia Turner 3,176 2,088 1,088 69 1,019 (6) 1,013 Home Box Office 1,781 1,694 87 27 60 — 60 Warner Bros. 2,411 1,973 438 43 395 (23) 372 Eliminations and other 146 (171) 317 32 285 40 325 Total WarnerMedia 7,514 5,584 1,930 171 1,759 11 1,770 Latin America Vrio 753 675 78 126 (48) 14 (34) Mexico 643 662 (19) 124 (143) — (143) Total Latin America 1,396 1,337 59 250 (191) 14 (177) Segment Total 43,197 28,933 14,264 5,048 9,216 $ 25 $ 9,241 Corporate and Other Corporate 431 1,012 (581) 61 (642) Acquisition-related items — 38 (38) 1,921 (1,959) Certain significant items — 113 (113) — (113) Eliminations and consolidations (1,288) (918) (370) — (370) AT&T Inc. $ 42,340 $ 29,178 $ 13,162 $ 7,030 $ 6,132 For the three months ended September 30, 2019 Revenues Operations and Support Expenses EBITDA Depreciation and Amortization Operating Income (Loss) Equity in Net Segment Contribution Communications Mobility $ 17,701 $ 9,948 $ 7,753 $ 2,011 $ 5,742 $ — $ 5,742 Entertainment Group 11,197 8,797 2,400 1,316 1,084 — 1,084 Business Wireline 6,503 4,022 2,481 1,271 1,210 — 1,210 Total Communications 35,401 22,767 12,634 4,598 8,036 — 8,036 WarnerMedia Turner 3,007 1,460 1,547 68 1,479 10 1,489 Home Box Office 1,819 1,072 747 33 714 10 724 Warner Bros. 3,333 2,706 627 39 588 (25) 563 Eliminations and other 191 91 100 25 75 20 95 Total WarnerMedia 8,350 5,329 3,021 165 2,856 15 2,871 Latin America Vrio 1,013 851 162 162 — 13 13 Mexico 717 774 (57) 122 (179) — (179) Total Latin America 1,730 1,625 105 284 (179) 13 (166) Segment Total 45,481 29,721 15,760 5,047 10,713 $ 28 $ 10,741 Corporate and Other Corporate 407 703 (296) 131 (427) Acquisition-related items — 190 (190) 1,771 (1,961) Certain significant items — 39 (39) — (39) Eliminations and consolidations (1,300) (915) (385) — (385) AT&T Inc. $ 44,588 $ 29,738 $ 14,850 $ 6,949 $ 7,901 For the nine months ended September 30, 2020 Revenues Operations EBITDA Depreciation Operating Equity in Net Segment Communications Mobility $ 52,445 $ 29,083 $ 23,362 $ 6,078 $ 17,284 $ — $ 17,284 Entertainment Group 30,637 23,618 7,019 3,875 3,144 — 3,144 Business Wireline 19,046 11,563 7,483 3,948 3,535 — 3,535 Total Communications 102,128 64,264 37,864 13,901 23,963 — 23,963 WarnerMedia Turner 9,326 5,145 4,181 207 3,974 — 3,974 Home Box Office 4,905 4,236 669 73 596 15 611 Warner Bros. 8,907 7,506 1,401 124 1,277 (50) 1,227 Eliminations and other (962) (882) (80) 97 (177) 65 (112) Total WarnerMedia 22,176 16,005 6,171 501 5,670 30 5,700 Latin America Vrio 2,392 2,119 273 400 (127) 26 (101) Mexico 1,826 1,914 (88) 373 (461) — (461) Total Latin America 4,218 4,033 185 773 (588) 26 (562) Segment Total 128,522 84,302 44,220 15,175 29,045 $ 56 $ 29,101 Corporate and Other Corporate 1,256 2,819 (1,563) 241 (1,804) Acquisition-related items — 431 (431) 6,122 (6,553) Certain significant items — 2,539 (2,539) — (2,539) Eliminations and consolidations (3,709) (2,709) (1,000) (1) (999) AT&T Inc. $ 126,069 $ 87,382 $ 38,687 $ 21,537 $ 17,150 For the nine months ended September 30, 2019 Revenues Operations and Support Expenses EBITDA Depreciation and Amortization Operating Income (Loss) Equity in Net Segment Contribution Communications Mobility $ 52,356 $ 29,511 $ 22,845 $ 6,027 $ 16,818 $ — $ 16,818 Entertainment Group 33,893 25,839 8,054 3,978 4,076 — 4,076 Business Wireline 19,588 12,029 7,559 3,735 3,824 — 3,824 Total Communications 105,837 67,379 38,458 13,740 24,718 — 24,718 WarnerMedia Turner 9,860 5,813 4,047 167 3,880 46 3,926 Home Box Office 5,045 3,124 1,921 67 1,854 40 1,894 Warner Bros. 10,240 8,543 1,697 122 1,575 (19) 1,556 Eliminations and other 845 438 407 69 338 70 408 Total WarnerMedia 25,990 17,918 8,072 425 7,647 137 7,784 Latin America Vrio 3,112 2,598 514 496 18 25 43 Mexico 2,093 2,312 (219) 372 (591) — (591) Total Latin America 5,205 4,910 295 868 (573) 25 (548) Segment Total 137,032 90,207 46,825 15,033 31,792 $ 162 $ 31,954 Corporate and Other Corporate 1,290 2,129 (839) 505 (1,344) Acquisition-related items (72) 579 (651) 5,719 (6,370) Certain significant items — 381 (381) — (381) Eliminations and consolidations (3,878) (2,814) (1,064) (1) (1,063) AT&T Inc. $ 134,372 $ 90,482 $ 43,890 $ 21,256 $ 22,634 The following table is a reconciliation of Segment Contributions to “Income Before Income Taxes” reported on our consolidated statements of income: Three months ended Nine months ended 2020 2019 2020 2019 Communications $ 7,648 $ 8,036 $ 23,963 $ 24,718 WarnerMedia 1,770 2,871 5,700 7,784 Latin America (177) (166) (562) (548) Segment Contribution 9,241 10,741 29,101 31,954 Reconciling Items: Corporate and Other (642) (427) (1,804) (1,344) Merger and integration items (38) (190) (431) (651) Amortization of intangibles acquired (1,921) (1,771) (6,122) (5,719) Asset impairments and abandonments (73) — (2,515) — Gain on spectrum transaction 1 — — 900 — Employee separation costs and benefit-related losses (40) (39) (924) (381) Segment equity in net income of affiliates (25) (28) (56) (162) Eliminations and consolidations (370) (385) (999) (1,063) AT&T Operating Income 6,132 7,901 17,150 22,634 Interest Expense 1,972 2,083 6,031 6,373 Equity in net income (loss) of affiliates 5 3 (11) 36 Other income (expense) - net (231) (935) 1,589 (967) Income Before Income Taxes $ 3,934 $ 4,886 $ 12,697 $ 15,330 1 Included as a reduction of "Selling, general and administrative expenses" in the consolidated statement of income. The following table presents intersegment revenues by segment: Intersegment Reconciliation Three months ended Nine months ended 2020 2019 2020 2019 Intersegment Revenues Communications $ 3 $ 2 $ 7 $ 10 WarnerMedia 812 819 2,402 2,538 Latin America — — — — Total Intersegment Revenues 815 821 2,409 2,548 Consolidations 473 479 1,300 1,330 Eliminations and consolidations $ 1,288 $ 1,300 $ 3,709 $ 3,878

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 30, 2020
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. Intercompany transactions between segments and the dual reporting of certain advertising revenues are included in “Eliminations and consolidations.” Intercompany transactions between Turner, Home Box Office and Warner Bros., including internal sales of HBO Max that began in the fourth quarter of 2019, are included in “Eliminations and other.” For the three months ended September 30, 2020 Service Revenues Wireless Advanced Data Legacy Voice & Data Subscription Content Advertising Other Equipment Total Communications Mobility $ 13,811 $ — $ — $ — $ — $ 72 $ — $ 4,011 $ 17,894 Entertainment Group — 2,128 538 6,556 — 408 373 50 10,053 Business Wireline — 3,348 2,031 — — — 780 181 6,340 WarnerMedia Turner — — — 1,840 175 1,077 84 — 3,176 Home Box Office — — — 1,624 150 — 7 — 1,781 Warner Bros. — — — 11 2,293 1 106 — 2,411 Eliminations and other 1 — — — 87 (488) 529 18 — 146 Latin America Vrio — — — 753 — — — — 753 Mexico 385 — — — — — — 258 643 Corporate and Other 169 14 138 — — — 52 58 431 Eliminations and consolidations 2 — — — (790) — (408) (90) — (1,288) Total Operating Revenues $ 14,365 $ 5,490 $ 2,707 $ 10,081 $ 2,130 $ 1,679 $ 1,330 $ 4,558 $ 42,340 1 “Eliminations and other” of $488 include Warner Bros. content sales of approximately $200 with HBO Max, $180 with HBO linear and $100 with Turner. 2 “Eliminations and consolidations” of $790 include approximately $370 and $250 of Turner and HBO linear channel distribution arrangements with the Entertainment Group, respectively, and $120 of HBO Max customer subscriptions at Mobility. For the three months ended September 30, 2019 Service Revenues Wireless Advanced Data Legacy Voice & Data Subscription Content Advertising Other Equipment Total Communications Mobility $ 13,856 $ — $ — $ — $ — $ 74 $ — $ 3,771 $ 17,701 Entertainment Group — 2,117 628 7,512 — 421 517 2 11,197 Business Wireline — 3,269 2,252 — — — 783 199 6,503 WarnerMedia Turner — — — 1,927 89 913 78 — 3,007 Home Box Office — — — 1,533 284 — 2 — 1,819 Warner Bros. — — — 23 3,129 13 168 — 3,333 Eliminations and other 1 — — — 57 (387) 523 (2) — 191 Latin America Vrio — — — 1,013 — — — — 1,013 Mexico 455 — — — — — — 262 717 Corporate and Other 124 13 6 — — — 227 37 407 Eliminations and consolidations 2 — — — (798) — (421) (81) — (1,300) Total Operating Revenues $ 14,435 $ 5,399 $ 2,886 $ 11,267 $ 3,115 $ 1,523 $ 1,692 $ 4,271 $ 44,588 1 “Eliminations and other” of $387 include Warner Bros. content sales of approximately $110 with HBO linear and $170 with Turner. 2 “Eliminations and consolidations” of $798 include approximately $430 and $330 of Turner and HBO linear channel distribution arrangements with the Entertainment Group, respectively. For the nine months ended September 30, 2020 Service Revenues Wireless Advanced Data Legacy Voice & Data Subscription Content Advertising Other Equipment Total Communications Mobility $ 41,314 $ — $ — $ — $ — $ 206 $ — $ 10,925 $ 52,445 Entertainment Group — 6,329 1,679 20,220 — 1,115 1,189 105 30,637 Business Wireline — 9,943 6,227 — — — 2,315 561 19,046 WarnerMedia Turner — — — 5,693 595 2,830 208 — 9,326 Home Box Office — — — 4,403 488 — 14 — 4,905 Warner Bros. — — — 37 8,532 4 334 — 8,907 Eliminations and other 1 — — — 221 (2,650) 1,416 51 — (962) Latin America Vrio — — — 2,392 — — — — 2,392 Mexico 1,197 — — — — — — 629 1,826 Corporate and Other 464 38 424 — — — 197 133 1,256 Eliminations and consolidations 2 — — — (2,349) — (1,115) (245) — (3,709) Total Operating Revenues $ 42,975 $ 16,310 $ 8,330 $ 30,617 $ 6,965 $ 4,456 $ 4,063 $ 12,353 $ 126,069 1 “Eliminations and other” of $2,650 include Warner Bros. contents sales of approximately $1,850 with HBO Max, $510 with HBO linear and $220 with Turner. 2 “Eliminations and consolidations” of $2,349 include approximately $1,170 and $880 of Turner and HBO linear channel distribution arrangements with the Entertainment Group, respectively, and $150 of HBO Max customer subscriptions at Mobility. For the nine months ended September 30, 2019 Service Revenues Wireless Advanced Data Legacy Voice & Data Subscription Content Advertising Other Equipment Total Communications Mobility $ 41,171 $ — $ — $ — $ — $ 212 $ — $ 10,973 $ 52,356 Entertainment Group — 6,296 1,969 22,872 — 1,170 1,580 6 33,893 Business Wireline — 9,649 6,973 — — — 2,430 536 19,588 WarnerMedia Turner — — — 5,835 335 3,440 250 — 9,860 Home Box Office — — — 4,383 655 — 7 — 5,045 Warner Bros. — — — 67 9,636 33 504 — 10,240 Eliminations and other 1 — — — 160 (776) 1,451 10 — 845 Latin America Vrio — — — 3,112 — — — — 3,112 Mexico 1,376 — — — — — — 717 2,093 Corporate and Other 437 40 20 — — — 605 116 1,218 Eliminations and consolidations 2 — — — (2,475) — (1,170) (233) — (3,878) Total Operating Revenues $ 42,984 $ 15,985 $ 8,962 $ 33,954 $ 9,850 $ 5,136 $ 5,153 $ 12,348 $ 134,372 1 “Eliminations and other” of $776 included Warner Bros. content sales of approximately $310 with HBO linear and $290 with Turner. 2 “Eliminations and consolidations” of $2,475 include approximately $1,340 and $1,000 of Turner and HBO linear channel distribution arrangements with the Entertainment Group, respectively. Deferred Customer Contract Acquisition and Fulfillment Costs Costs to acquire and fulfill customer contracts, including commissions on service activations, for our wireless, business wireline and video entertainment services, are deferred and amortized over the contract period or expected customer relationship life, which typically ranges from three years to five years. For contracts with an estimated amortization period of less than one year, we expense incremental costs immediately. The following table presents the deferred customer contract acquisition and fulfillment costs included on our consolidated balance sheets: September 30, December 31, Consolidated Balance Sheets 2020 2019 Deferred Acquisition Costs Other current assets $ 2,831 $ 2,462 Other Assets 3,114 2,991 Total deferred customer contract acquisition costs $ 5,945 $ 5,453 Deferred Fulfillment Costs Other current assets $ 4,234 $ 4,519 Other Assets 5,781 6,439 Total deferred customer contract fulfillment costs $ 10,015 $ 10,958 The following table presents deferred customer contract acquisition and fulfillment cost amortization included in “Other cost of revenue” for the nine months ended: September 30, September 30, Consolidated Statements of Income 2020 2019 Deferred acquisition cost amortization $ 1,969 $ 1,565 Deferred fulfillment cost amortization 3,888 3,656 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., “buy one get one free”) the difference between revenue recognized and consideration received is recorded as a contract asset to be amortized over the contract term. When consideration is received in advance of the delivery of goods or services, a contract liability is recorded for deferred revenue. 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: September 30, December 31, Consolidated Balance Sheets 2020 2019 Contract asset $ 2,817 $ 2,472 Contract liability 6,617 6,999 Our beginning of period contract liability recorded as customer contract revenue during 2020 was $5,340. Our consolidated balance sheets at September 30, 2020 and December 31, 2019 included $1,729 and $1,611, respectively, for the current portion of our contract asset in “Other current assets” and $5,762 and $5,939, respectively, for the current portion of our contract liability in “Advanced billings and customer deposits.” 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, video and residential internet agreements.

Pension And Postretirement Bene

Pension And Postretirement Benefits	9 Months Ended
	Sep. 30, 2020
Defined Benefit Plan [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 2020. 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 pension and postretirement benefit costs included in the accompanying consolidated statements of income. The service cost component of net periodic pension cost (benefit) 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 Nine months ended September 30, September 30, 2020 2019 2020 2019 Pension cost: Service cost - benefits earned during the period $ 257 $ 260 $ 772 $ 743 Interest cost on projected benefit obligation 421 463 1,265 1,520 Expected return on assets (888) (905) (2,667) (2,636) Amortization of prior service credit (28) (28) (85) (85) Actuarial (gain) loss — 1,888 — 4,019 Net pension (credit) cost $ (238) $ 1,678 $ (715) $ 3,561 Postretirement cost: Service cost – benefits earned during the period $ 14 $ 19 $ 40 $ 55 Interest cost on accumulated postretirement benefit obligation 104 185 312 557 Expected return on assets (44) (57) (133) (169) Amortization of prior service credit (583) (425) (1,747) (1,277) Net postretirement (credit) cost $ (509) $ (278) $ (1,528) $ (834) Combined net pension and postretirement (credit) cost $ (747) $ 1,400 $ (2,243) $ 2,727

Fair Value Measurements And Dis

Fair Value Measurements And Disclosure	9 Months Ended
	Sep. 30, 2020
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, 2019. 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: September 30, 2020 December 31, 2019 Carrying Fair Carrying Fair Amount Value Amount Value Notes and debentures 1 $ 155,218 $ 181,872 $ 161,109 $ 182,124 Commercial paper 1,754 1,754 — — Bank borrowings — — 4 4 Investment securities 2 3,669 3,669 3,723 3,723 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 September 30, 2020 and December 31, 2019. Derivatives designated as hedging instruments are reflected as “Other assets,” “Other noncurrent liabilities,” “Other current assets” and “Accounts payable and accrued liabilities” on our consolidated balance sheets. September 30, 2020 Level 1 Level 2 Level 3 Total Equity Securities Domestic equities $ 893 $ — $ — $ 893 International equities 148 — — 148 Fixed income equities 233 — — 233 Available-for-Sale Debt Securities — 1,524 — 1,524 Asset Derivatives Cross-currency swaps — 322 — 322 Foreign exchange contracts — 16 — 16 Liability Derivatives Cross-currency swaps — (4,244) — (4,244) Foreign exchange contracts — (6) — (6) December 31, 2019 Level 1 Level 2 Level 3 Total Equity Securities Domestic equities $ 844 $ — $ — $ 844 International equities 183 — — 183 Fixed income equities 229 — — 229 Available-for-Sale Debt Securities — 1,444 — 1,444 Asset Derivatives Interest rate swaps — 2 — 2 Cross-currency swaps — 172 — 172 Interest rate locks — 11 — 11 Foreign exchange contracts — 89 — 89 Liability Derivatives Cross-currency swaps — (3,187) — (3,187) Interest rate locks — (95) — (95) 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 Nine months ended September 30, September 30, 2020 2019 2020 2019 Total gains (losses) recognized on equity securities $ 64 $ 21 $ 22 $ 231 Gains (Losses) recognized on equity securities sold — 74 (24) 101 Unrealized gains (losses) recognized on equity securities held at end of period $ 64 $ (53) $ 46 $ 130 At September 30, 2020, available-for-sale debt securities totaling $1,524 have maturities as follows - less than one year: $62; one to three years: $155; three to five years: $163; five or more years: $1,144. 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 “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 some of our foreign exchange contracts as fair value hedges. The purpose of these contracts is to hedge currency risk associated with foreign-currency-denominated operating assets and liabilities. 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. Unrealized gains on derivatives designated as fair value hedges are recorded at fair market value as assets, and unrealized losses are recorded at fair market value as liabilities. 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 nine months ended September 30, 2020 and 2019, no ineffectiveness was measured on fair value hedges. Cash Flow Hedging We designate our cross-currency swaps as cash flow hedges. We have entered into multiple cross-currency swaps to hedge our exposure to variability in expected future cash flows that are attributable to foreign currency risk generated from our foreign-denominated debt. These agreements include initial and final exchanges of principal from fixed foreign currency 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 currency-denominated interest rate to a fixed U.S. dollar denominated interest rate. We also designate some of our foreign exchange contracts as cash flow hedges. The purpose of these contracts is to hedge certain forecasted film production costs and film tax incentives denominated in foreign currencies. 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 $95 from accumulated OCI to “Interest expense” due to the amortization of net losses on historical interest rate locks. We settled all interest rate locks in May 2020 in conjunction with the issuance of fixed rate debt obligations that the interest rate locks were hedging and paid $731 that was largely offset by the return of collateral at the time of settlement. Cash flows from the interest rate lock settlements and return of collateral were reported as Financing Activities in our Statement of Cash Flows, consistent with our accounting policy for these instruments. Net Investment Hedging We have designated €1,450 million aggregate principal amount of debt as a hedge of the variability of some of the Euro-denominated net investments of our subsidiaries. The gain or loss on the debt that is designated as, and is effective as, an economic hedge of the net investment in a foreign operation is recorded as a currency translation adjustment within accumulated OCI, net on the consolidated balance sheet. Net losses on net investment hedges recognized in accumulated OCI in the third quarter were $70 and for the first nine months of 2020 were $75. 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 September 30, 2020, we had posted collateral of $485 (a deposit asset) and held collateral of $4 (a receipt liability). Under the agreements, if AT&T’s credit rating had been downgraded one rating level by Fitch Ratings, before the final collateral exchange in September, we would have been required to post additional collateral of $25. If AT&T’s credit rating had been downgraded four 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 $3,237. If DIRECTV Holdings LLC’s credit rating had been downgraded below BBB- by S&P, we would have been required to post additional collateral of $241. At December 31, 2019, we had posted collateral of $204 (a deposit asset) and held collateral of $44 (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: September 30, December 31, 2020 2019 Interest rate swaps $ — $ 853 Cross-currency swaps 42,969 42,325 Interest rate locks — 3,500 Foreign exchange contracts 204 269 Total $ 43,173 $ 46,947 Following are the related hedged items affecting our financial position and performance: Effect of Derivatives on the Consolidated Statements of Income Three months ended Nine months ended September 30, September 30, Fair Value Hedging Relationships 2020 2019 2020 2019 Interest rate swaps (Interest expense): Gain (Loss) on interest rate swaps $ (1) $ — $ (5) $ 59 Gain (Loss) on long-term debt 1 — 5 (59) In addition, the net swap settlements that accrued and settled in the quarters ended September 30, 2020 and 2019 were offset against interest expense. The following table presents information for our cash flow hedging relationships: Three months ended Nine months ended September 30, September 30, Cash Flow Hedging Relationships 2020 2019 2020 2019 Cross-currency swaps: Gain (Loss) recognized in accumulated OCI $ 1,079 $ (487) $ (2,091) $ (1,082) Foreign exchange contracts: Gain (Loss) recognized in accumulated OCI 10 5 (1) 2 Other income (expense) - net reclassified from accumulated OCI into income (9) 6 4 16 Interest rate locks: Gain (Loss) recognized in accumulated OCI — (202) (648) (225) Interest income (expense) reclassified from accumulated OCI into income (25) (15) (59) (47)

Acquisitions, Dispositions And

Acquisitions, Dispositions And Other Adjustments	9 Months Ended
	Sep. 30, 2020
Business Combinations [Abstract]
Acquisitions, Dispositions And Other Adjustments	NOTE 8. ACQUISITIONS, DISPOSITIONS AND OTHER ADJUSTMENTS Acquisitions HBO Latin America Group (HBO LAG) In May 2020, we acquired the remaining interest in HBO LAG for $141, net of cash acquired. At acquisition, we remeasured the fair value of the total business, which exceeded the carrying amount of our equity method investment and resulted in a pre-tax gain of $68. We consolidated that business upon close and recorded those assets at fair value, including $640 of trade names, $271 of distribution networks and $343 of goodwill that is reported in the WarnerMedia segment. These estimates are preliminary in nature and subject to adjustments, which will be finalized within one year from the date of acquisition. Spectrum Auctions In June 2020, we completed the acquisition of $2,379 of 37/39 GHz spectrum in a Federal Communications Commission (FCC) auction. Prior to the auction, we exchanged the 39 GHz licenses with a book value of approximately $300 that were previously acquired through FiberTower Corporation for vouchers to be applied against the winning bids and recorded a $900 gain in the first quarter of 2020. These vouchers yielded a value of approximately $1,200, which was applied toward our gross bids. In the second quarter of 2020, we made the final cash payment of $949, bringing the total cash payment to $1,186. Dispositions Subsequent to the Third Quarter Central European Media Enterprises Ltd. (CME) On October 13, 2020, we completed the sale of our 65.3% interest in CME, a European broadcasting company, and received $1,100. Upon close, we received relief from a debt guarantee originally covering approximately $1,100 that was reduced to $600 by September 30, 2020. Operations in Puerto Rico On October 31, 2020, we completed the sale of wireless and wireline operations in Puerto Rico and the U.S. Virgin Islands for approximately $1,950. These operations were classified as held-for-sale, and, accordingly, we included the assets in “Other current assets,” and the related liabilities in “Accounts payable and accrued liabilities,” on our consolidated balance sheet at September 30, 2020. The proceeds will be used to redeem $1,950 of cumulative preferred interests in a subsidiary that held notes secured by the proceeds of this sale.

Sales Of Receivables

Sales Of Receivables	9 Months Ended
	Sep. 30, 2020
Receivables [Abstract]
Sales Of Receivables	NOTE 9. 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 a deferred purchase price, and (2) revolving service and trade receivables. Under these programs, we transfer receivables to purchasers in exchange for cash and additional consideration upon settlement of the receivables, where applicable. Under the terms of our agreements for these programs, we continue to bill and collect the payments from our customers on behalf of the financial institutions. 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. Cash receipts on the deferred purchase price are classified as cash flows from investing activities. Our equipment installment and revolving receivable programs are discussed in detail below. The following table sets forth a summary of the receivables and accounts being serviced: September 30, 2020 December 31, 2019 Equipment Equipment Installment Revolving Installment Revolving Gross receivables: $ 4,241 $ 3,516 $ 4,576 $ 3,324 Balance sheet classification Accounts receivable Notes receivable 2,190 — 2,467 — Trade receivables 481 3,329 477 2,809 Other Assets Noncurrent notes and trade receivables 1,570 187 1,632 515 Outstanding portfolio of receivables derecognized from our consolidated balance sheets 8,238 5,100 9,713 4,300 Cash proceeds received, net of remittances 1 5,944 5,100 7,211 4,300 1 Represents amounts to which financial institutions remain entitled, excluding the deferred purchase price. 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 additional consideration upon settlement of the receivables, referred to as the deferred purchase price. 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 during the three and nine months ended September 30, 2020 and 2019: Three months ended Nine months ended September 30, September 30, 2020 2019 2020 2019 Gross receivables sold $ 1,624 $ 2,098 $ 5,497 $ 7,043 Net receivables sold 1 1,578 2,014 5,300 6,693 Cash proceeds received 1,387 1,700 4,562 5,895 Deferred purchase price recorded 226 352 811 922 Guarantee obligation recorded 55 67 126 261 1 Receivables net of allowance, imputed interest and equipment trade-in right guarantees. The deferred purchase price and guarantee obligation 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 that contemplate changes in value after the launch of a device model. The fair value measurements used for the deferred purchase price 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 deferred purchase price during the three and nine months ended September 30, 2020 and 2019: Three months ended Nine months ended September 30, September 30, 2020 2019 2020 2019 Fair value of repurchased receivables $ 373 $ 268 $ 946 $ 926 Carrying value of deferred purchase price 373 259 931 891 Gain on repurchases 1 $ — $ 9 $ 15 $ 35 1 These gains are included in "Selling, general and administrative" in the consolidated statements of income. At September 30, 2020 and December 31, 2019, our deferred purchase price receivable was $2,163 and $2,336, respectively, of which $1,538 and $1,569 are included in “Other current assets” on our consolidated balance sheets, with the remainder in “Other Assets.” The guarantee obligation at September 30, 2020 and December 31, 2019 was $319 and $384, respectively, of which $234 and $148 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 deferred purchase price and guarantee obligation. Revolving Receivables Program In 2019, we entered into a one-year revolving agreement to transfer up to $4,300 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. In the first quarter of 2020, we expanded the program limit to $5,300. In the second quarter of 2020, we extended the agreement by one year. 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 $3,516 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. The obligation is subsequently adjusted for changes in estimated expected credit losses and interest rates. Our maximum exposure to loss related to these receivables transferred is limited to the amount outstanding. The fair value measurement used for the obligation is considered Level 3 under the Fair Value Measurement and Disclosure framework (see Note 7). The following table sets forth a summary of receivables sold: Three months ended Nine months ended September 30, September 30, 2020 2019 2020 2019 Gross receivables sold/cash proceeds received 1 $ 3,563 $ 2,873 $ 11,590 $ 8,725 Collections reinvested under revolving agreement 3,563 2,873 10,590 5,000 Collections not reinvested 200 269 200 269 Net cash proceeds received (remitted) $ (200) $ (269) $ 800 $ 3,456 Net receivables sold 2 $ 3,553 $ 2,864 $ 11,510 $ 8,361 Obligations recorded (reversed) 58 39 172 475 1 There were no initial sales of receivables in either of the three-month periods and $1,000 and $3,725 for the nine months ended September 30, 2020 and 2019, respectively. 2 Receivables net of allowance, return and incentive reserves and imputed interest.

Leases

Leases	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Leases	NOTE 10. LEASES We have operating and finance leases for certain facilities and equipment used in operations. Our leases generally have remaining lease terms of up to 15 years. Some of our real estate operating leases contain renewal options that may be exercised, and some of our leases include options to terminate the leases within one year. We have recognized a right-of-use asset for both operating and finance leases, and an operating lease liability that represents the present value of our obligation to make payments over the lease term. The present value of the lease payments is calculated using the incremental borrowing rate for operating and finance leases, which was determined using a portfolio approach based on the rate of interest that we would have to pay to borrow an amount equal to the lease payments on a collateralized basis over a similar term. We use the unsecured borrowing rate and risk-adjust that rate to approximate a collateralized rate in the currency of the lease, which will be updated on a quarterly basis for measurement of new lease liabilities. The components of lease expense were as follows: Three months ended Nine months ended September 30, September 30, 2020 2019 2020 2019 Operating lease cost $ 1,546 $ 1,481 $ 4,372 $ 4,333 Finance lease cost: Amortization of right-of-use assets $ 76 $ 67 $ 216 $ 203 Interest on lease obligation 39 42 116 126 Total finance lease cost $ 115 $ 109 $ 332 $ 329 Supplemental cash flow information related to leases is as follows: Nine months ended September 30, 2020 2019 Cash Flows from Operating Activities Cash paid for amounts included in lease obligations Operating cash flows from operating leases $ 3,651 $ 3,338 Supplemental Lease Cash Flow Disclosures Operating lease right-of-use assets obtained in exchange for new operating lease obligations 3,908 7,068 Supplemental balance sheet information related to leases is as follows: September 30, December 31, Operating Leases Operating lease right-of-use assets $ 24,546 $ 24,039 Accounts payable and accrued liabilities $ 3,483 $ 3,451 Operating lease obligation 22,056 21,804 Total operating lease obligation $ 25,539 $ 25,255 Finance Leases Property, plant and equipment, at cost $ 3,485 $ 3,534 Accumulated depreciation and amortization (1,363) (1,296) Property, plant and equipment, net $ 2,122 $ 2,238 Current portion of long-term debt $ 174 $ 162 Long-term debt 1,732 1,872 Total finance lease obligation $ 1,906 $ 2,034 September 30, 2020 2019 Weighted-Average Remaining Lease Term (years) Operating leases 8.5 8.7 Finance leases 10.1 10.4 Weighted-Average Discount Rate Operating leases 4.1 % 4.3 % Finance leases 8.1 % 8.4 % Future minimum maturities of lease obligations are as follows: At September 30, 2020 Operating Finance Leases Leases Remainder of 2020 $ 1,226 $ 99 2021 4,679 316 2022 4,372 298 2023 3,981 278 2024 3,449 258 Thereafter 13,543 1,720 Total lease payments 31,250 2,969 Less imputed interest (5,711) (1,063) Total $ 25,539 $ 1,906
Leases	NOTE 10. LEASES We have operating and finance leases for certain facilities and equipment used in operations. Our leases generally have remaining lease terms of up to 15 years. Some of our real estate operating leases contain renewal options that may be exercised, and some of our leases include options to terminate the leases within one year. We have recognized a right-of-use asset for both operating and finance leases, and an operating lease liability that represents the present value of our obligation to make payments over the lease term. The present value of the lease payments is calculated using the incremental borrowing rate for operating and finance leases, which was determined using a portfolio approach based on the rate of interest that we would have to pay to borrow an amount equal to the lease payments on a collateralized basis over a similar term. We use the unsecured borrowing rate and risk-adjust that rate to approximate a collateralized rate in the currency of the lease, which will be updated on a quarterly basis for measurement of new lease liabilities. The components of lease expense were as follows: Three months ended Nine months ended September 30, September 30, 2020 2019 2020 2019 Operating lease cost $ 1,546 $ 1,481 $ 4,372 $ 4,333 Finance lease cost: Amortization of right-of-use assets $ 76 $ 67 $ 216 $ 203 Interest on lease obligation 39 42 116 126 Total finance lease cost $ 115 $ 109 $ 332 $ 329 Supplemental cash flow information related to leases is as follows: Nine months ended September 30, 2020 2019 Cash Flows from Operating Activities Cash paid for amounts included in lease obligations Operating cash flows from operating leases $ 3,651 $ 3,338 Supplemental Lease Cash Flow Disclosures Operating lease right-of-use assets obtained in exchange for new operating lease obligations 3,908 7,068 Supplemental balance sheet information related to leases is as follows: September 30, December 31, Operating Leases Operating lease right-of-use assets $ 24,546 $ 24,039 Accounts payable and accrued liabilities $ 3,483 $ 3,451 Operating lease obligation 22,056 21,804 Total operating lease obligation $ 25,539 $ 25,255 Finance Leases Property, plant and equipment, at cost $ 3,485 $ 3,534 Accumulated depreciation and amortization (1,363) (1,296) Property, plant and equipment, net $ 2,122 $ 2,238 Current portion of long-term debt $ 174 $ 162 Long-term debt 1,732 1,872 Total finance lease obligation $ 1,906 $ 2,034 September 30, 2020 2019 Weighted-Average Remaining Lease Term (years) Operating leases 8.5 8.7 Finance leases 10.1 10.4 Weighted-Average Discount Rate Operating leases 4.1 % 4.3 % Finance leases 8.1 % 8.4 % Future minimum maturities of lease obligations are as follows: At September 30, 2020 Operating Finance Leases Leases Remainder of 2020 $ 1,226 $ 99 2021 4,679 316 2022 4,372 298 2023 3,981 278 2024 3,449 258 Thereafter 13,543 1,720 Total lease payments 31,250 2,969 Less imputed interest (5,711) (1,063) Total $ 25,539 $ 1,906

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2020
Stockholders' Equity Note [Abstract]
Stockholders' Equity	NOTE 11. STOCKHOLDERS' EQUITY We have authorized 10 million preferred shares of AT&T stock, each with a par value of $1.00 per share. Cumulative perpetual preferred shares consist of the following: • Series A: 48 thousand shares outstanding at September 30, 2020 and December 31, 2019, with a $25,000 per share liquidation preference and a dividend rate of 5.00%. • Series B: 20 thousand shares outstanding at September 30, 2020 and zero issued and outstanding at December 31, 2019, with a €100,000 per share liquidation preference, and an initial dividend rate of 2.875%, subject to reset beginning on May 1, 2025. • Series C: 70 thousand shares outstanding at September 30, 2020 and zero issued and outstanding at December 31, 2019, with a $25,000 per share liquidation preference and a dividend rate of 4.75%. So long as the preferred dividends are declared and paid on a timely basis on each series of preferred shares, there are no limitations on our ability to declare a dividend on or repurchase AT&T common shares. The preferred shares are optionally redeemable by AT&T at the liquidation price generally on or after five years from the issuance date, or upon certain other contingent events. Telco LLC In September 2020, we issued $2,000 nonconvertible cumulative preferred interests out of a newly created limited liability company (Telco LLC) that was formed to hold telecommunication-related assets. The preferred interests are entitled to cash distributions, subject to declaration and are included in “Noncontrolling interest” on the consolidated balance sheets. Members’ equity in Telco LLC consist of (1) member’s interests, which are held by a consolidated subsidiary of AT&T, and (2) preferred interests (Telco preferred interests), which pay an initial preferred distribution of 4.25% annually, subject to declaration, and subject to reset every seven years. Failure to pay distributions on the Telco preferred interests would not limit cash movements between affiliates, or our ability to declare a dividend on or repurchase AT&T shares. We can call the Telco preferred interests at the issue price beginning seven years from the issuance date. The Telco preferred interests holders have the option to require redemption upon the occurrence of certain contingent events, such as the failure of Telco LLC to pay the preferred distribution for two or more periods or to meet certain other requirements, including a minimum credit rating. If notice is given, all other holders of equal or more subordinate classes of members equity are entitled to receive the same form of consideration payable to the holders of the preferred interests, resulting in a deemed liquidation for accounting purposes.

Additional Financial Informatio

Additional Financial Information	9 Months Ended
	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Additional Financial Information	NOTE 12. 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: September 30, December 31, 2020 2019 2019 2018 Cash and cash equivalents $ 9,758 $ 6,588 $ 12,130 $ 5,204 Restricted cash in Other current assets 2 15 69 61 Restricted cash in Other Assets 89 179 96 135 Cash and Cash Equivalents and Restricted Cash $ 9,849 $ 6,782 $ 12,295 $ 5,400 Consolidated Statements of Cash Flows Nine months ended September 30, Cash paid (received) during the period for: 2020 2019 Interest $ 6,661 $ 6,938 Income taxes, net of refunds 306 420 Spectrum acquisitions 1,062 1,022 Other Noncash Investing and Financing Activities In connection with capital improvements and the acquisition of other productive assets, we negotiate favorable payment terms (referred to as vendor financing), which are reported as financing activities when paid. For the first nine months, we recorded vendor financing commitments related to capital investments of approximately $3,148 in 2020 and $1,917 in 2019. Total vendor financing payables included in our September 30, 2020 consolidated balance sheet were approximately $3,252, with $1,474 due within one year (in “Accounts payable and accrued liabilities”) and the remainder predominantly due within two Financing Activities Debt Transactions At September 30, 2020, our total long-term debt obligations totaled $158,878. Our debt activity during the nine months ended September 30, 2020 primarily consisted of the following: • Net borrowings of approximately $1,710 of debt under our commercial paper program during the first nine months. • Entry into and draw on a $5,500 Term Loan Credit Agreement, with certain commercial banks and Bank of America, N.A., as lead agent, in April 2020, which was redeemed in May 2020 (originally due on December 31, 2020). • Issuance of $16,545 of AT&T global notes due 2027 to 2060 in the second quarter. • Issuance of €3,000 million global notes ($3,281 at issuance) due 2028 to 2038 in the second quarter. • Issuance of $11,000 of global notes due 2028 to 2061 in the third quarter. • Redemption of $12,689 of AT&T global notes due 2020 to 2047 in the second quarter. • Redemption of $1,800 under term loan credit agreements with certain banks in the second quarter. • Redemption of $1,000 annual put reset securities issued by BellSouth in the second quarter. • Redemption of $4,264 of AT&T, WarnerMedia and DIRECTV notes due 2022 in the third quarter. • Redemption of $1,158 of AT&T and WarnerMedia global notes due 2022 to 2023 in the third quarter. • Redemption of €2,250 of AT&T floating-rate notes due 2020 (approximately $2,637 at maturity) in the third quarter. • Redemption of R$3,381 of Sky Serviços de Banda Larga Ltda. floating-rate private loan due 2021 (approximately $1,000 when issued in April 2018 and $638 at redemption due to strengthening of the U.S. dollar against Brazilian real) in the third quarter. • Repurchases of $11,384 of AT&T global notes and subsidiary notes due 2021 to 2025 tendered for cash in the third quarter. • Exchange of $17,677 of AT&T and subsidiary notes, due 2031 to 2058, for $1,459 of cash and $21,500 of three new series of AT&T global notes due 2053 to 2059 in the third quarter.

Preparation Of Interim Financ_2

Preparation Of Interim Financial Statements (Policies)	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Principles of Consolidation	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 for periods ended within up to one quarter of our period end. We also record our proportionate share of our equity method investees’ other comprehensive income (OCI) items.
Basis of Accounting	The preparation of financial statements in conformity with U.S. generally accepted accounting principles (GAAP) requires management to make estimates and assumptions, including potential impacts arising from the COVID-19 pandemic, that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Certain prior period amounts have been conformed to the current period’s presentation, including the combination of our prior Xandr segment with the WarnerMedia segment.
Credit Losses	Credit Losses As of January 1, 2020, we adopted, through modified retrospective application, the Financial Accounting Standards Board’s (FASB) Accounting Standards Update (ASU) No. 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (ASU 2016-13, as amended), which replaces the incurred loss impairment methodology under prior GAAP with an expected credit loss model. ASU 2016-13 affects trade receivables, loans, contract assets, certain beneficial interests, off-balance-sheet credit exposures not accounted for as insurance and other financial assets that are not subject to fair value through net income, as defined by the standard. Under the expected credit loss model, we are required to consider future economic trends to estimate expected credit losses over the lifetime of the asset. Upon adoption, we recorded a $293 reduction to “Retained earnings,” $395 increase to “allowances for doubtful accounts” applicable to our trade and loan receivables, $10 reduction of contract assets, $105 reduction of net deferred income tax liability and $7 reduction of “Noncontrolling interest” as an opening adjustment. Our adoption of ASU 2016-13 did not have a material impact on our financial statements.
Reference Rate Reform and Convertible Instruments	Reference Rate Reform In March 2020, the FASB issued ASU No. 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting” (ASU 2020-04), which provides optional expedients, and allows for certain exceptions to existing GAAP, for contract modifications triggered by the expected market transition of certain benchmark interest rates to alternative reference rates. ASU 2020-04 applies to contracts, hedging relationships and other arrangements that reference the London Interbank Offering Rate (LIBOR) or any other rates ending after December 31, 2022. We are evaluating the impact of our adoption of ASU 2020-04, including optional expedients, to our financial statements. Convertible Instruments In August 2020, the FASB issued 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), which eliminated certain separation models regarding cash conversion and beneficial conversion features to simplify reporting for convertible instruments as a single liability or equity, with no separate accounting for embedded conversion features. ASU 2020-06 will be effective for fiscal years beginning after December 31, 2021, under modified retrospective or full retrospective application, subject to early adoption in 2021. We are evaluating the impact of our adoption of ASU 2020-06 on our financial statements.
Intangible Assets	Intangible Assets In the second quarter, driven by significant and adverse economic and political environments in Latin America, including the impact of the COVID-19 pandemic, we experienced accelerated subscriber losses and revenue decline in the region, as well as closure of our operations in Venezuela. When combining these business trends and higher weighted-average cost of capital resulting from the increase in country-risk premiums in the region, we concluded that it is more likely than not that the fair value of the Vrio reporting unit, estimated using discounted cash flow and market multiple approaches, is less than its carrying amount. We recorded a $2,212 goodwill impairment in the reporting unit in the second quarter, with $105 attributable to noncontrolling interest. The impairment is not deductible for tax purposes and resulted in an increase in our effective tax rate. During the first quarter of 2020, we reassessed and changed the estimated economic lives of certain trade names in our Latin America business from indefinite to finite-lived and began amortizing them using the straight-line method over their average remaining economic life of 15 years. This change had an insignificant impact on our financial statements. Also during the first quarter of 2020, in conjunction with the nationwide launch of AT&T TV and our customers’ continued shift from linear to streaming video services, we reassessed the estimated economic lives and renewal assumptions for our orbital slot licenses. As a result, we have changed the estimated lives of these licenses from indefinite to finite-lived, effective January 1, 2020, and began amortizing our orbital slot licenses using the sum-of-months-digits method over their average remaining economic life of 15 years. This change in accounting increased amortization expense $373, or $0.04 per diluted share available to common stock during the third quarter and $1,138, or $0.12, per diluted share available to common stock for the first nine months of 2020.
Recognition of Actuarial Gains and Losses	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.
Derivatives, Offsetting Fair Value Amounts	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)	9 Months Ended
	Sep. 30, 2020
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 for the three and nine months ended September 30, 2020 and 2019, is shown in the table below. Three months ended Nine months ended September 30, September 30, 2020 2019 2020 2019 Numerators Numerator for basic earnings per share: Net Income $ 3,168 $ 3,949 $ 9,694 $ 12,271 Less: Net income attributable to noncontrolling interest (352) (249) (987) (762) Net Income attributable to AT&T 2,816 3,700 8,707 11,509 Less: Preferred stock dividends (54) — (138) — Net income attributable to common stock 2,762 3,700 8,569 11,509 Dilutive potential common shares: Share-based payment 5 6 16 16 Numerator for diluted earnings per share $ 2,767 $ 3,706 $ 8,585 $ 11,525 Denominators (000,000) Denominator for basic earnings per share: Weighted average number of common shares outstanding 7,147 7,327 7,160 7,321 Dilutive potential common shares: Share-based payment (in shares) 26 29 26 29 Denominator for diluted earnings per share 7,173 7,356 7,186 7,350 Basic earnings per share attributable to Common Stock $ 0.39 $ 0.50 $ 1.19 $ 1.57 Diluted earnings per share attributable to Common Stock $ 0.39 $ 0.50 $ 1.19 $ 1.57

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2020
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 and exclude noncontrolling interest. 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 Balance as of December 31, 2019 $ (3,056) $ 48 $ (37) $ 8,515 $ 5,470 Other comprehensive income (loss) before reclassifications (1,398) 81 (2,166) — (3,483) Amounts reclassified from accumulated OCI — 1 — 1 44 2 (1,382) 3 (1,338) Net other comprehensive income (loss) (1,398) 81 (2,122) (1,382) (4,821) Balance as of September 30, 2020 $ (4,454) $ 129 $ (2,159) $ 7,133 $ 649 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 Balance as of December 31, 2018 $ (3,084) $ (2) $ 818 $ 6,517 $ 4,249 Other comprehensive income (loss) before reclassifications (166) 67 (1,006) — (1,105) Amounts reclassified from accumulated OCI — 1 — 1 24 2 (1,031) 3 (1,007) Net other comprehensive income (loss) (166) 67 (982) (1,031) (2,112) Balance as of September 30, 2019 $ (3,250) $ 65 $ (164) $ 5,486 $ 2,137 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)	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Reconciliation of Revenues to Segment Contribution	For the three months ended September 30, 2020 Revenues Operations EBITDA Depreciation Operating Equity in Net Segment Communications Mobility $ 17,894 $ 10,182 $ 7,712 $ 2,021 $ 5,691 $ — $ 5,691 Entertainment Group 10,053 7,997 2,056 1,277 779 — 779 Business Wireline 6,340 3,833 2,507 1,329 1,178 — 1,178 Total Communications 34,287 22,012 12,275 4,627 7,648 — 7,648 WarnerMedia Turner 3,176 2,088 1,088 69 1,019 (6) 1,013 Home Box Office 1,781 1,694 87 27 60 — 60 Warner Bros. 2,411 1,973 438 43 395 (23) 372 Eliminations and other 146 (171) 317 32 285 40 325 Total WarnerMedia 7,514 5,584 1,930 171 1,759 11 1,770 Latin America Vrio 753 675 78 126 (48) 14 (34) Mexico 643 662 (19) 124 (143) — (143) Total Latin America 1,396 1,337 59 250 (191) 14 (177) Segment Total 43,197 28,933 14,264 5,048 9,216 $ 25 $ 9,241 Corporate and Other Corporate 431 1,012 (581) 61 (642) Acquisition-related items — 38 (38) 1,921 (1,959) Certain significant items — 113 (113) — (113) Eliminations and consolidations (1,288) (918) (370) — (370) AT&T Inc. $ 42,340 $ 29,178 $ 13,162 $ 7,030 $ 6,132 For the three months ended September 30, 2019 Revenues Operations and Support Expenses EBITDA Depreciation and Amortization Operating Income (Loss) Equity in Net Segment Contribution Communications Mobility $ 17,701 $ 9,948 $ 7,753 $ 2,011 $ 5,742 $ — $ 5,742 Entertainment Group 11,197 8,797 2,400 1,316 1,084 — 1,084 Business Wireline 6,503 4,022 2,481 1,271 1,210 — 1,210 Total Communications 35,401 22,767 12,634 4,598 8,036 — 8,036 WarnerMedia Turner 3,007 1,460 1,547 68 1,479 10 1,489 Home Box Office 1,819 1,072 747 33 714 10 724 Warner Bros. 3,333 2,706 627 39 588 (25) 563 Eliminations and other 191 91 100 25 75 20 95 Total WarnerMedia 8,350 5,329 3,021 165 2,856 15 2,871 Latin America Vrio 1,013 851 162 162 — 13 13 Mexico 717 774 (57) 122 (179) — (179) Total Latin America 1,730 1,625 105 284 (179) 13 (166) Segment Total 45,481 29,721 15,760 5,047 10,713 $ 28 $ 10,741 Corporate and Other Corporate 407 703 (296) 131 (427) Acquisition-related items — 190 (190) 1,771 (1,961) Certain significant items — 39 (39) — (39) Eliminations and consolidations (1,300) (915) (385) — (385) AT&T Inc. $ 44,588 $ 29,738 $ 14,850 $ 6,949 $ 7,901 For the nine months ended September 30, 2020 Revenues Operations EBITDA Depreciation Operating Equity in Net Segment Communications Mobility $ 52,445 $ 29,083 $ 23,362 $ 6,078 $ 17,284 $ — $ 17,284 Entertainment Group 30,637 23,618 7,019 3,875 3,144 — 3,144 Business Wireline 19,046 11,563 7,483 3,948 3,535 — 3,535 Total Communications 102,128 64,264 37,864 13,901 23,963 — 23,963 WarnerMedia Turner 9,326 5,145 4,181 207 3,974 — 3,974 Home Box Office 4,905 4,236 669 73 596 15 611 Warner Bros. 8,907 7,506 1,401 124 1,277 (50) 1,227 Eliminations and other (962) (882) (80) 97 (177) 65 (112) Total WarnerMedia 22,176 16,005 6,171 501 5,670 30 5,700 Latin America Vrio 2,392 2,119 273 400 (127) 26 (101) Mexico 1,826 1,914 (88) 373 (461) — (461) Total Latin America 4,218 4,033 185 773 (588) 26 (562) Segment Total 128,522 84,302 44,220 15,175 29,045 $ 56 $ 29,101 Corporate and Other Corporate 1,256 2,819 (1,563) 241 (1,804) Acquisition-related items — 431 (431) 6,122 (6,553) Certain significant items — 2,539 (2,539) — (2,539) Eliminations and consolidations (3,709) (2,709) (1,000) (1) (999) AT&T Inc. $ 126,069 $ 87,382 $ 38,687 $ 21,537 $ 17,150 For the nine months ended September 30, 2019 Revenues Operations and Support Expenses EBITDA Depreciation and Amortization Operating Income (Loss) Equity in Net Segment Contribution Communications Mobility $ 52,356 $ 29,511 $ 22,845 $ 6,027 $ 16,818 $ — $ 16,818 Entertainment Group 33,893 25,839 8,054 3,978 4,076 — 4,076 Business Wireline 19,588 12,029 7,559 3,735 3,824 — 3,824 Total Communications 105,837 67,379 38,458 13,740 24,718 — 24,718 WarnerMedia Turner 9,860 5,813 4,047 167 3,880 46 3,926 Home Box Office 5,045 3,124 1,921 67 1,854 40 1,894 Warner Bros. 10,240 8,543 1,697 122 1,575 (19) 1,556 Eliminations and other 845 438 407 69 338 70 408 Total WarnerMedia 25,990 17,918 8,072 425 7,647 137 7,784 Latin America Vrio 3,112 2,598 514 496 18 25 43 Mexico 2,093 2,312 (219) 372 (591) — (591) Total Latin America 5,205 4,910 295 868 (573) 25 (548) Segment Total 137,032 90,207 46,825 15,033 31,792 $ 162 $ 31,954 Corporate and Other Corporate 1,290 2,129 (839) 505 (1,344) Acquisition-related items (72) 579 (651) 5,719 (6,370) Certain significant items — 381 (381) — (381) Eliminations and consolidations (3,878) (2,814) (1,064) (1) (1,063) AT&T Inc. $ 134,372 $ 90,482 $ 43,890 $ 21,256 $ 22,634
Reconciliation of Segment Contributions to Income Before Income Taxes	The following table is a reconciliation of Segment Contributions to “Income Before Income Taxes” reported on our consolidated statements of income: Three months ended Nine months ended 2020 2019 2020 2019 Communications $ 7,648 $ 8,036 $ 23,963 $ 24,718 WarnerMedia 1,770 2,871 5,700 7,784 Latin America (177) (166) (562) (548) Segment Contribution 9,241 10,741 29,101 31,954 Reconciling Items: Corporate and Other (642) (427) (1,804) (1,344) Merger and integration items (38) (190) (431) (651) Amortization of intangibles acquired (1,921) (1,771) (6,122) (5,719) Asset impairments and abandonments (73) — (2,515) — Gain on spectrum transaction 1 — — 900 — Employee separation costs and benefit-related losses (40) (39) (924) (381) Segment equity in net income of affiliates (25) (28) (56) (162) Eliminations and consolidations (370) (385) (999) (1,063) AT&T Operating Income 6,132 7,901 17,150 22,634 Interest Expense 1,972 2,083 6,031 6,373 Equity in net income (loss) of affiliates 5 3 (11) 36 Other income (expense) - net (231) (935) 1,589 (967) Income Before Income Taxes $ 3,934 $ 4,886 $ 12,697 $ 15,330 1 Included as a reduction of "Selling, general and administrative expenses" in the consolidated statement of income.
Schedule of Intersegment Revenues by Segment	The following table presents intersegment revenues by segment: Intersegment Reconciliation Three months ended Nine months ended 2020 2019 2020 2019 Intersegment Revenues Communications $ 3 $ 2 $ 7 $ 10 WarnerMedia 812 819 2,402 2,538 Latin America — — — — Total Intersegment Revenues 815 821 2,409 2,548 Consolidations 473 479 1,300 1,330 Eliminations and consolidations $ 1,288 $ 1,300 $ 3,709 $ 3,878

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue by Category and Business Unit	For the three months ended September 30, 2020 Service Revenues Wireless Advanced Data Legacy Voice & Data Subscription Content Advertising Other Equipment Total Communications Mobility $ 13,811 $ — $ — $ — $ — $ 72 $ — $ 4,011 $ 17,894 Entertainment Group — 2,128 538 6,556 — 408 373 50 10,053 Business Wireline — 3,348 2,031 — — — 780 181 6,340 WarnerMedia Turner — — — 1,840 175 1,077 84 — 3,176 Home Box Office — — — 1,624 150 — 7 — 1,781 Warner Bros. — — — 11 2,293 1 106 — 2,411 Eliminations and other 1 — — — 87 (488) 529 18 — 146 Latin America Vrio — — — 753 — — — — 753 Mexico 385 — — — — — — 258 643 Corporate and Other 169 14 138 — — — 52 58 431 Eliminations and consolidations 2 — — — (790) — (408) (90) — (1,288) Total Operating Revenues $ 14,365 $ 5,490 $ 2,707 $ 10,081 $ 2,130 $ 1,679 $ 1,330 $ 4,558 $ 42,340 1 “Eliminations and other” of $488 include Warner Bros. content sales of approximately $200 with HBO Max, $180 with HBO linear and $100 with Turner. 2 “Eliminations and consolidations” of $790 include approximately $370 and $250 of Turner and HBO linear channel distribution arrangements with the Entertainment Group, respectively, and $120 of HBO Max customer subscriptions at Mobility. For the three months ended September 30, 2019 Service Revenues Wireless Advanced Data Legacy Voice & Data Subscription Content Advertising Other Equipment Total Communications Mobility $ 13,856 $ — $ — $ — $ — $ 74 $ — $ 3,771 $ 17,701 Entertainment Group — 2,117 628 7,512 — 421 517 2 11,197 Business Wireline — 3,269 2,252 — — — 783 199 6,503 WarnerMedia Turner — — — 1,927 89 913 78 — 3,007 Home Box Office — — — 1,533 284 — 2 — 1,819 Warner Bros. — — — 23 3,129 13 168 — 3,333 Eliminations and other 1 — — — 57 (387) 523 (2) — 191 Latin America Vrio — — — 1,013 — — — — 1,013 Mexico 455 — — — — — — 262 717 Corporate and Other 124 13 6 — — — 227 37 407 Eliminations and consolidations 2 — — — (798) — (421) (81) — (1,300) Total Operating Revenues $ 14,435 $ 5,399 $ 2,886 $ 11,267 $ 3,115 $ 1,523 $ 1,692 $ 4,271 $ 44,588 1 “Eliminations and other” of $387 include Warner Bros. content sales of approximately $110 with HBO linear and $170 with Turner. 2 “Eliminations and consolidations” of $798 include approximately $430 and $330 of Turner and HBO linear channel distribution arrangements with the Entertainment Group, respectively. For the nine months ended September 30, 2020 Service Revenues Wireless Advanced Data Legacy Voice & Data Subscription Content Advertising Other Equipment Total Communications Mobility $ 41,314 $ — $ — $ — $ — $ 206 $ — $ 10,925 $ 52,445 Entertainment Group — 6,329 1,679 20,220 — 1,115 1,189 105 30,637 Business Wireline — 9,943 6,227 — — — 2,315 561 19,046 WarnerMedia Turner — — — 5,693 595 2,830 208 — 9,326 Home Box Office — — — 4,403 488 — 14 — 4,905 Warner Bros. — — — 37 8,532 4 334 — 8,907 Eliminations and other 1 — — — 221 (2,650) 1,416 51 — (962) Latin America Vrio — — — 2,392 — — — — 2,392 Mexico 1,197 — — — — — — 629 1,826 Corporate and Other 464 38 424 — — — 197 133 1,256 Eliminations and consolidations 2 — — — (2,349) — (1,115) (245) — (3,709) Total Operating Revenues $ 42,975 $ 16,310 $ 8,330 $ 30,617 $ 6,965 $ 4,456 $ 4,063 $ 12,353 $ 126,069 1 “Eliminations and other” of $2,650 include Warner Bros. contents sales of approximately $1,850 with HBO Max, $510 with HBO linear and $220 with Turner. 2 “Eliminations and consolidations” of $2,349 include approximately $1,170 and $880 of Turner and HBO linear channel distribution arrangements with the Entertainment Group, respectively, and $150 of HBO Max customer subscriptions at Mobility. For the nine months ended September 30, 2019 Service Revenues Wireless Advanced Data Legacy Voice & Data Subscription Content Advertising Other Equipment Total Communications Mobility $ 41,171 $ — $ — $ — $ — $ 212 $ — $ 10,973 $ 52,356 Entertainment Group — 6,296 1,969 22,872 — 1,170 1,580 6 33,893 Business Wireline — 9,649 6,973 — — — 2,430 536 19,588 WarnerMedia Turner — — — 5,835 335 3,440 250 — 9,860 Home Box Office — — — 4,383 655 — 7 — 5,045 Warner Bros. — — — 67 9,636 33 504 — 10,240 Eliminations and other 1 — — — 160 (776) 1,451 10 — 845 Latin America Vrio — — — 3,112 — — — — 3,112 Mexico 1,376 — — — — — — 717 2,093 Corporate and Other 437 40 20 — — — 605 116 1,218 Eliminations and consolidations 2 — — — (2,475) — (1,170) (233) — (3,878) Total Operating Revenues $ 42,984 $ 15,985 $ 8,962 $ 33,954 $ 9,850 $ 5,136 $ 5,153 $ 12,348 $ 134,372 1 “Eliminations and other” of $776 included Warner Bros. content sales of approximately $310 with HBO linear and $290 with Turner. 2 “Eliminations and consolidations” of $2,475 include approximately $1,340 and $1,000 of Turner and HBO linear channel distribution arrangements with the Entertainment Group, respectively.
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: September 30, December 31, Consolidated Balance Sheets 2020 2019 Deferred Acquisition Costs Other current assets $ 2,831 $ 2,462 Other Assets 3,114 2,991 Total deferred customer contract acquisition costs $ 5,945 $ 5,453 Deferred Fulfillment Costs Other current assets $ 4,234 $ 4,519 Other Assets 5,781 6,439 Total deferred customer contract fulfillment costs $ 10,015 $ 10,958 The following table presents deferred customer contract acquisition and fulfillment cost amortization included in “Other cost of revenue” for the nine months ended: September 30, September 30, Consolidated Statements of Income 2020 2019 Deferred acquisition cost amortization $ 1,969 $ 1,565 Deferred fulfillment cost amortization 3,888 3,656
Schedule of Contract Assets and Liabilities	The following table presents contract assets and liabilities on our consolidated balance sheets: September 30, December 31, Consolidated Balance Sheets 2020 2019 Contract asset $ 2,817 $ 2,472 Contract liability 6,617 6,999

Pension And Postretirement Be_2

Pension And Postretirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2020
Defined Benefit Plan [Abstract]
Schedule of Pension and Postretirement Benefit Costs	The following table details pension and postretirement benefit costs included in the accompanying consolidated statements of income. The service cost component of net periodic pension cost (benefit) 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 Nine months ended September 30, September 30, 2020 2019 2020 2019 Pension cost: Service cost - benefits earned during the period $ 257 $ 260 $ 772 $ 743 Interest cost on projected benefit obligation 421 463 1,265 1,520 Expected return on assets (888) (905) (2,667) (2,636) Amortization of prior service credit (28) (28) (85) (85) Actuarial (gain) loss — 1,888 — 4,019 Net pension (credit) cost $ (238) $ 1,678 $ (715) $ 3,561 Postretirement cost: Service cost – benefits earned during the period $ 14 $ 19 $ 40 $ 55 Interest cost on accumulated postretirement benefit obligation 104 185 312 557 Expected return on assets (44) (57) (133) (169) Amortization of prior service credit (583) (425) (1,747) (1,277) Net postretirement (credit) cost $ (509) $ (278) $ (1,528) $ (834) Combined net pension and postretirement (credit) cost $ (747) $ 1,400 $ (2,243) $ 2,727

Fair Value Measurements And D_2

Fair Value Measurements And Disclosure (Tables)	9 Months Ended
	Sep. 30, 2020
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: September 30, 2020 December 31, 2019 Carrying Fair Carrying Fair Amount Value Amount Value Notes and debentures 1 $ 155,218 $ 181,872 $ 161,109 $ 182,124 Commercial paper 1,754 1,754 — — Bank borrowings — — 4 4 Investment securities 2 3,669 3,669 3,723 3,723 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 September 30, 2020 and December 31, 2019. Derivatives designated as hedging instruments are reflected as “Other assets,” “Other noncurrent liabilities,” “Other current assets” and “Accounts payable and accrued liabilities” on our consolidated balance sheets. September 30, 2020 Level 1 Level 2 Level 3 Total Equity Securities Domestic equities $ 893 $ — $ — $ 893 International equities 148 — — 148 Fixed income equities 233 — — 233 Available-for-Sale Debt Securities — 1,524 — 1,524 Asset Derivatives Cross-currency swaps — 322 — 322 Foreign exchange contracts — 16 — 16 Liability Derivatives Cross-currency swaps — (4,244) — (4,244) Foreign exchange contracts — (6) — (6) December 31, 2019 Level 1 Level 2 Level 3 Total Equity Securities Domestic equities $ 844 $ — $ — $ 844 International equities 183 — — 183 Fixed income equities 229 — — 229 Available-for-Sale Debt Securities — 1,444 — 1,444 Asset Derivatives Interest rate swaps — 2 — 2 Cross-currency swaps — 172 — 172 Interest rate locks — 11 — 11 Foreign exchange contracts — 89 — 89 Liability Derivatives Cross-currency swaps — (3,187) — (3,187) Interest rate locks — (95) — (95)
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 Nine months ended September 30, September 30, 2020 2019 2020 2019 Total gains (losses) recognized on equity securities $ 64 $ 21 $ 22 $ 231 Gains (Losses) recognized on equity securities sold — 74 (24) 101 Unrealized gains (losses) recognized on equity securities held at end of period $ 64 $ (53) $ 46 $ 130
Notional Amount of Outstanding Derivative Positions	Following are the notional amounts of our outstanding derivative positions: September 30, December 31, 2020 2019 Interest rate swaps $ — $ 853 Cross-currency swaps 42,969 42,325 Interest rate locks — 3,500 Foreign exchange contracts 204 269 Total $ 43,173 $ 46,947
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 Nine months ended September 30, September 30, Fair Value Hedging Relationships 2020 2019 2020 2019 Interest rate swaps (Interest expense): Gain (Loss) on interest rate swaps $ (1) $ — $ (5) $ 59 Gain (Loss) on long-term debt 1 — 5 (59) The following table presents information for our cash flow hedging relationships: Three months ended Nine months ended September 30, September 30, Cash Flow Hedging Relationships 2020 2019 2020 2019 Cross-currency swaps: Gain (Loss) recognized in accumulated OCI $ 1,079 $ (487) $ (2,091) $ (1,082) Foreign exchange contracts: Gain (Loss) recognized in accumulated OCI 10 5 (1) 2 Other income (expense) - net reclassified from accumulated OCI into income (9) 6 4 16 Interest rate locks: Gain (Loss) recognized in accumulated OCI — (202) (648) (225) Interest income (expense) reclassified from accumulated OCI into income (25) (15) (59) (47)

Sales Of Receivables (Tables)

Sales Of Receivables (Tables)	9 Months Ended
	Sep. 30, 2020
Receivables [Abstract]
Schedule of Finance Receivables	Our equipment installment and revolving receivable programs are discussed in detail below. The following table sets forth a summary of the receivables and accounts being serviced: September 30, 2020 December 31, 2019 Equipment Equipment Installment Revolving Installment Revolving Gross receivables: $ 4,241 $ 3,516 $ 4,576 $ 3,324 Balance sheet classification Accounts receivable Notes receivable 2,190 — 2,467 — Trade receivables 481 3,329 477 2,809 Other Assets Noncurrent notes and trade receivables 1,570 187 1,632 515 Outstanding portfolio of receivables derecognized from our consolidated balance sheets 8,238 5,100 9,713 4,300 Cash proceeds received, net of remittances 1 5,944 5,100 7,211 4,300 1 Represents amounts to which financial institutions remain entitled, excluding the deferred purchase price. The following table sets forth a summary of equipment installment receivables sold under this program during the three and nine months ended September 30, 2020 and 2019: Three months ended Nine months ended September 30, September 30, 2020 2019 2020 2019 Gross receivables sold $ 1,624 $ 2,098 $ 5,497 $ 7,043 Net receivables sold 1 1,578 2,014 5,300 6,693 Cash proceeds received 1,387 1,700 4,562 5,895 Deferred purchase price recorded 226 352 811 922 Guarantee obligation recorded 55 67 126 261 1 Receivables net of allowance, imputed interest and equipment trade-in right guarantees. The following table presents the previously transferred equipment installment receivables, which we repurchased in exchange for the associated deferred purchase price during the three and nine months ended September 30, 2020 and 2019: Three months ended Nine months ended September 30, September 30, 2020 2019 2020 2019 Fair value of repurchased receivables $ 373 $ 268 $ 946 $ 926 Carrying value of deferred purchase price 373 259 931 891 Gain on repurchases 1 $ — $ 9 $ 15 $ 35 1 These gains are included in "Selling, general and administrative" in the consolidated statements of income.
Schedule of Receivables Sold	The following table sets forth a summary of receivables sold: Three months ended Nine months ended September 30, September 30, 2020 2019 2020 2019 Gross receivables sold/cash proceeds received 1 $ 3,563 $ 2,873 $ 11,590 $ 8,725 Collections reinvested under revolving agreement 3,563 2,873 10,590 5,000 Collections not reinvested 200 269 200 269 Net cash proceeds received (remitted) $ (200) $ (269) $ 800 $ 3,456 Net receivables sold 2 $ 3,553 $ 2,864 $ 11,510 $ 8,361 Obligations recorded (reversed) 58 39 172 475 1 There were no initial sales of receivables in either of the three-month periods and $1,000 and $3,725 for the nine months ended September 30, 2020 and 2019, respectively. 2 Receivables net of allowance, return and incentive reserves and imputed interest.

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Components of Lease Expense, Supplemental Cash Flow Information Related to Leases, and Supplemental Balance Sheet Information Related to Leases	The components of lease expense were as follows: Three months ended Nine months ended September 30, September 30, 2020 2019 2020 2019 Operating lease cost $ 1,546 $ 1,481 $ 4,372 $ 4,333 Finance lease cost: Amortization of right-of-use assets $ 76 $ 67 $ 216 $ 203 Interest on lease obligation 39 42 116 126 Total finance lease cost $ 115 $ 109 $ 332 $ 329 Supplemental cash flow information related to leases is as follows: Nine months ended September 30, 2020 2019 Cash Flows from Operating Activities Cash paid for amounts included in lease obligations Operating cash flows from operating leases $ 3,651 $ 3,338 Supplemental Lease Cash Flow Disclosures Operating lease right-of-use assets obtained in exchange for new operating lease obligations 3,908 7,068 Supplemental balance sheet information related to leases is as follows: September 30, December 31, Operating Leases Operating lease right-of-use assets $ 24,546 $ 24,039 Accounts payable and accrued liabilities $ 3,483 $ 3,451 Operating lease obligation 22,056 21,804 Total operating lease obligation $ 25,539 $ 25,255 Finance Leases Property, plant and equipment, at cost $ 3,485 $ 3,534 Accumulated depreciation and amortization (1,363) (1,296) Property, plant and equipment, net $ 2,122 $ 2,238 Current portion of long-term debt $ 174 $ 162 Long-term debt 1,732 1,872 Total finance lease obligation $ 1,906 $ 2,034 September 30, 2020 2019 Weighted-Average Remaining Lease Term (years) Operating leases 8.5 8.7 Finance leases 10.1 10.4 Weighted-Average Discount Rate Operating leases 4.1 % 4.3 % Finance leases 8.1 % 8.4 %
Schedule of Maturities of Operating Leases	Future minimum maturities of lease obligations are as follows: At September 30, 2020 Operating Finance Leases Leases Remainder of 2020 $ 1,226 $ 99 2021 4,679 316 2022 4,372 298 2023 3,981 278 2024 3,449 258 Thereafter 13,543 1,720 Total lease payments 31,250 2,969 Less imputed interest (5,711) (1,063) Total $ 25,539 $ 1,906
Schedule of Maturities of Finance Leases	Future minimum maturities of lease obligations are as follows: At September 30, 2020 Operating Finance Leases Leases Remainder of 2020 $ 1,226 $ 99 2021 4,679 316 2022 4,372 298 2023 3,981 278 2024 3,449 258 Thereafter 13,543 1,720 Total lease payments 31,250 2,969 Less imputed interest (5,711) (1,063) Total $ 25,539 $ 1,906

Additional Financial Informat_2

Additional Financial Information (Tables)	9 Months Ended
	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of 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: September 30, December 31, 2020 2019 2019 2018 Cash and cash equivalents $ 9,758 $ 6,588 $ 12,130 $ 5,204 Restricted cash in Other current assets 2 15 69 61 Restricted cash in Other Assets 89 179 96 135 Cash and Cash Equivalents and Restricted Cash $ 9,849 $ 6,782 $ 12,295 $ 5,400 Consolidated Statements of Cash Flows Nine months ended September 30, Cash paid (received) during the period for: 2020 2019 Interest $ 6,661 $ 6,938 Income taxes, net of refunds 306 420 Spectrum acquisitions 1,062 1,022

Preparation Of Interim Financ_3

Preparation Of Interim Financial Statements (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	$ 55,094			$ 55,094			$ 57,936
Contract asset	2,817			2,817			2,472
Deferred income taxes	60,448			60,448			59,502
Noncontrolling interest	19,503			19,503			$ 17,713
Goodwill impairment	$ 73		$ 0	$ 2,515	$ 0
Diluted earnings per share attributable to Common Stock (in dollars per share)	$ 0.39		$ 0.50	$ 1.19	$ 1.57
Venezuela | Latin America | Vrio
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Noncontrolling interest		$ (105)
Goodwill impairment		$ 2,212
Intangible Assets, Amortization Period | Latin America | Trade Names
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated economic useful life				15 years
Intangible Assets, Amortization Period | Communications | Orbital Slot Licenses
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated economic useful life				15 years
Amortization expense	$ 373			$ 1,138
Diluted earnings per share attributable to Common Stock (in dollars per share)	$ 0.04			$ 0.12
ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings						$ (293)
Allowance for doubtful accounts						395
Contract asset						(10)
Deferred income taxes						(105)
Noncontrolling interest						$ (7)

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator for basic earnings per share:
Net Income	$ 3,168	$ 3,949	$ 9,694	$ 12,271
Less: Net income attributable to noncontrolling interest	(352)	(249)	(987)	(762)
Net Income Attributable to AT&T	2,816	3,700	8,707	11,509
Less: Preferred stock dividends	(54)	0	(138)	0
Net Income Attributable to Common Stock	2,762	3,700	8,569	11,509
Dilutive potential common shares:
Share-based payment	5	6	16	16
Numerator for diluted earnings per share	$ 2,767	$ 3,706	$ 8,585	$ 11,525
Denominator for basic earnings per share:
Weighted average number of common shares outstanding (in shares)	7,147	7,327	7,160	7,321
Dilutive potential common shares:
Share-based payment (in shares)	26	29	26	29
Denominator for diluted earnings per share (in shares)	7,173	7,356	7,186	7,350
Basic earnings per share attributable to Common Stock (in dollars per share)	$ 0.39	$ 0.50	$ 1.19	$ 1.57
Diluted earnings per share attributable to Common Stock (in dollars per share)	$ 0.39	$ 0.50	$ 1.19	$ 1.57

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2020	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Repurchase of common stock		$ 5,483	$ 409
Stock Repurchase Program
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Repurchase of common stock	$ 4,000
Repurchase of common stock (in shares)	104.8

Other Comprehensive Income (Det

Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income (loss) before reclassifications			$ (3,483)	$ (1,105)
Amounts reclassified from accumulated OCI			(1,338)	(1,007)
Net other comprehensive income (loss)			(4,821)	(2,112)
Accumulated Other Comprehensive Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance			5,470	4,249
Net other comprehensive income (loss)	$ 520	$ (1,152)	(4,821)	(2,112)
Accumulated other comprehensive income, ending balance	649	2,137	649	2,137
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance			(3,056)	(3,084)
Other comprehensive income (loss) before reclassifications			(1,398)	(166)
Amounts reclassified from accumulated OCI			0	0
Net other comprehensive income (loss)			(1,398)	(166)
Accumulated other comprehensive income, ending balance	(4,454)	(3,250)	(4,454)	(3,250)
Net Unrealized Gains (Losses) on Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance			48	(2)
Other comprehensive income (loss) before reclassifications			81	67
Amounts reclassified from accumulated OCI			0	0
Net other comprehensive income (loss)			81	67
Accumulated other comprehensive income, ending balance	129	65	129	65
Net Unrealized Gains (Losses) on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance			(37)	818
Other comprehensive income (loss) before reclassifications			(2,166)	(1,006)
Amounts reclassified from accumulated OCI			44	24
Net other comprehensive income (loss)			(2,122)	(982)
Accumulated other comprehensive income, ending balance	(2,159)	(164)	(2,159)	(164)
Defined Benefit Postretirement Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income, beginning balance			8,515	6,517
Other comprehensive income (loss) before reclassifications			0	0
Amounts reclassified from accumulated OCI			(1,382)	(1,031)
Net other comprehensive income (loss)			(1,382)	(1,031)
Accumulated other comprehensive income, ending balance	$ 7,133	$ 5,486	$ 7,133	$ 5,486

Segment Information (Summary Of

Segment Information (Summary Of Operating Revenues And Expenses) (Narrative) (Details)	9 Months Ended
	Sep. 30, 2020segment
Segment Reporting [Abstract]
Number of Reportable Segments	3

Segment Information (Summary _2

Segment Information (Summary Of Operating Revenues And Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Revenues	$ 42,340	$ 44,588	$ 126,069	$ 134,372
Operations and Support Expenses	29,178	29,738	87,382	90,482
EBITDA	13,162	14,850	38,687	43,890
Depreciation and Amortization	7,030	6,949	21,537	21,256
Operating Income	6,132	7,901	17,150	22,634
Equity in Net Income (Loss) of Affiliates	5	3	(11)	36
Income Before Income Taxes	3,934	4,886	12,697	15,330
Operating Segments
Segment Reporting Information [Line Items]
Revenues	43,197	45,481	128,522	137,032
Operations and Support Expenses	28,933	29,721	84,302	90,207
EBITDA	14,264	15,760	44,220	46,825
Depreciation and Amortization	5,048	5,047	15,175	15,033
Operating Income	9,216	10,713	29,045	31,792
Equity in Net Income (Loss) of Affiliates	25	28	56	162
Income Before Income Taxes	9,241	10,741	29,101	31,954
Corporate
Segment Reporting Information [Line Items]
Revenues	431	407	1,256	1,290
Operations and Support Expenses	1,012	703	2,819	2,129
EBITDA	(581)	(296)	(1,563)	(839)
Depreciation and Amortization	61	131	241	505
Operating Income	(642)	(427)	(1,804)	(1,344)
Reconciling Items
Segment Reporting Information [Line Items]
Equity in Net Income (Loss) of Affiliates	(25)	(28)	(56)	(162)
Acquisition-related items
Segment Reporting Information [Line Items]
Revenues	0	0	0	(72)
Operations and Support Expenses	38	190	431	579
EBITDA	(38)	(190)	(431)	(651)
Depreciation and Amortization	1,921	1,771	6,122	5,719
Operating Income	(1,959)	(1,961)	(6,553)	(6,370)
Certain significant items
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Operations and Support Expenses	113	39	2,539	381
EBITDA	(113)	(39)	(2,539)	(381)
Depreciation and Amortization	0	0	0	0
Operating Income	(113)	(39)	(2,539)	(381)
Eliminations and consolidations
Segment Reporting Information [Line Items]
Revenues	(1,288)	(1,300)	(3,709)	(3,878)
Operations and Support Expenses	(918)	(915)	(2,709)	(2,814)
EBITDA	(370)	(385)	(1,000)	(1,064)
Depreciation and Amortization	0	0	(1)	(1)
Operating Income	(370)	(385)	(999)	(1,063)
Communications | Operating Segments
Segment Reporting Information [Line Items]
Revenues	34,287	35,401	102,128	105,837
Operations and Support Expenses	22,012	22,767	64,264	67,379
EBITDA	12,275	12,634	37,864	38,458
Depreciation and Amortization	4,627	4,598	13,901	13,740
Operating Income	7,648	8,036	23,963	24,718
Equity in Net Income (Loss) of Affiliates	0	0	0	0
Income Before Income Taxes	7,648	8,036	23,963	24,718
Communications | Mobility | Operating Segments
Segment Reporting Information [Line Items]
Revenues	17,894	17,701	52,445	52,356
Operations and Support Expenses	10,182	9,948	29,083	29,511
EBITDA	7,712	7,753	23,362	22,845
Depreciation and Amortization	2,021	2,011	6,078	6,027
Operating Income	5,691	5,742	17,284	16,818
Equity in Net Income (Loss) of Affiliates	0	0	0	0
Income Before Income Taxes	5,691	5,742	17,284	16,818
Communications | Entertainment Group | Operating Segments
Segment Reporting Information [Line Items]
Revenues	10,053	11,197	30,637	33,893
Operations and Support Expenses	7,997	8,797	23,618	25,839
EBITDA	2,056	2,400	7,019	8,054
Depreciation and Amortization	1,277	1,316	3,875	3,978
Operating Income	779	1,084	3,144	4,076
Equity in Net Income (Loss) of Affiliates	0	0	0	0
Income Before Income Taxes	779	1,084	3,144	4,076
Communications | Business Wireline | Operating Segments
Segment Reporting Information [Line Items]
Revenues	6,340	6,503	19,046	19,588
Operations and Support Expenses	3,833	4,022	11,563	12,029
EBITDA	2,507	2,481	7,483	7,559
Depreciation and Amortization	1,329	1,271	3,948	3,735
Operating Income	1,178	1,210	3,535	3,824
Equity in Net Income (Loss) of Affiliates	0	0	0	0
Income Before Income Taxes	1,178	1,210	3,535	3,824
WarnerMedia | Operating Segments
Segment Reporting Information [Line Items]
Revenues	7,514	8,350	22,176	25,990
Operations and Support Expenses	5,584	5,329	16,005	17,918
EBITDA	1,930	3,021	6,171	8,072
Depreciation and Amortization	171	165	501	425
Operating Income	1,759	2,856	5,670	7,647
Equity in Net Income (Loss) of Affiliates	11	15	30	137
Income Before Income Taxes	1,770	2,871	5,700	7,784
WarnerMedia | Eliminations and other
Segment Reporting Information [Line Items]
Revenues	146	191	(962)	845
Operations and Support Expenses	(171)	91	(882)	438
EBITDA	317	100	(80)	407
Depreciation and Amortization	32	25	97	69
Operating Income	285	75	(177)	338
Equity in Net Income (Loss) of Affiliates	40	20	65	70
Income Before Income Taxes	325	95	(112)	408
WarnerMedia | Turner | Operating Segments
Segment Reporting Information [Line Items]
Revenues	3,176	3,007	9,326	9,860
Operations and Support Expenses	2,088	1,460	5,145	5,813
EBITDA	1,088	1,547	4,181	4,047
Depreciation and Amortization	69	68	207	167
Operating Income	1,019	1,479	3,974	3,880
Equity in Net Income (Loss) of Affiliates	(6)	10	0	46
Income Before Income Taxes	1,013	1,489	3,974	3,926
WarnerMedia | Home Box Office | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,781	1,819	4,905	5,045
Operations and Support Expenses	1,694	1,072	4,236	3,124
EBITDA	87	747	669	1,921
Depreciation and Amortization	27	33	73	67
Operating Income	60	714	596	1,854
Equity in Net Income (Loss) of Affiliates	0	10	15	40
Income Before Income Taxes	60	724	611	1,894
WarnerMedia | Warner Bros. | Operating Segments
Segment Reporting Information [Line Items]
Revenues	2,411	3,333	8,907	10,240
Operations and Support Expenses	1,973	2,706	7,506	8,543
EBITDA	438	627	1,401	1,697
Depreciation and Amortization	43	39	124	122
Operating Income	395	588	1,277	1,575
Equity in Net Income (Loss) of Affiliates	(23)	(25)	(50)	(19)
Income Before Income Taxes	372	563	1,227	1,556
Latin America | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,396	1,730	4,218	5,205
Operations and Support Expenses	1,337	1,625	4,033	4,910
EBITDA	59	105	185	295
Depreciation and Amortization	250	284	773	868
Operating Income	(191)	(179)	(588)	(573)
Equity in Net Income (Loss) of Affiliates	14	13	26	25
Income Before Income Taxes	(177)	(166)	(562)	(548)
Latin America | Vrio | Operating Segments
Segment Reporting Information [Line Items]
Revenues	753	1,013	2,392	3,112
Operations and Support Expenses	675	851	2,119	2,598
EBITDA	78	162	273	514
Depreciation and Amortization	126	162	400	496
Operating Income	(48)	0	(127)	18
Equity in Net Income (Loss) of Affiliates	14	13	26	25
Income Before Income Taxes	(34)	13	(101)	43
Latin America | Mexico | Operating Segments
Segment Reporting Information [Line Items]
Revenues	643	717	1,826	2,093
Operations and Support Expenses	662	774	1,914	2,312
EBITDA	(19)	(57)	(88)	(219)
Depreciation and Amortization	124	122	373	372
Operating Income	(143)	(179)	(461)	(591)
Equity in Net Income (Loss) of Affiliates	0	0	0	0
Income Before Income Taxes	$ (143)	$ (179)	$ (461)	$ (591)

Segment Information (Reconcilia

Segment Information (Reconciliation Of Operating Income Loss to Consolidated Statement Of Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Contribution	$ 3,934	$ 4,886	$ 12,697	$ 15,330
AT&T Operating Income	6,132	7,901	17,150	22,634
Equity in net income (loss) of affiliates	5	3	(11)	36
Interest Expense	1,972	2,083	6,031	6,373
Other income (expense) - net	(231)	(935)	1,589	(967)
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Contribution	9,241	10,741	29,101	31,954
AT&T Operating Income	9,216	10,713	29,045	31,792
Equity in net income (loss) of affiliates	25	28	56	162
Operating Segments | Communications
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Contribution	7,648	8,036	23,963	24,718
AT&T Operating Income	7,648	8,036	23,963	24,718
Equity in net income (loss) of affiliates	0	0	0	0
Operating Segments | WarnerMedia
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Contribution	1,770	2,871	5,700	7,784
AT&T Operating Income	1,759	2,856	5,670	7,647
Equity in net income (loss) of affiliates	11	15	30	137
Operating Segments | Latin America
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Contribution	(177)	(166)	(562)	(548)
AT&T Operating Income	(191)	(179)	(588)	(573)
Equity in net income (loss) of affiliates	14	13	26	25
Corporate and Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
AT&T Operating Income	(642)	(427)	(1,804)	(1,344)
Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Merger and integration items	(38)	(190)	(431)	(651)
Amortization of intangibles acquired	(1,921)	(1,771)	(6,122)	(5,719)
Asset impairments and abandonments	(73)	0	(2,515)	0
Gain on spectrum transaction	0	0	900	0
Employee separation costs and benefit-related losses	(40)	(39)	(924)	(381)
Equity in net income (loss) of affiliates	(25)	(28)	(56)	(162)
Eliminations and consolidations
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
AT&T Operating Income	$ (370)	$ (385)	$ (999)	$ (1,063)

Segment Information (Intersegme

Segment Information (Intersegment Details) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues [Abstract]
Total revenues	$ (42,340)	$ (44,588)	$ (126,069)	$ (134,372)
Total Intersegment Revenues
Revenues [Abstract]
Total revenues	815	821	2,409	2,548
Consolidations
Revenues [Abstract]
Total revenues	473	479	1,300	1,330
Eliminations and consolidations
Revenues [Abstract]
Total revenues	1,288	1,300	3,709	3,878
Communications | Total Intersegment Revenues
Revenues [Abstract]
Total revenues	3	2	7	10
WarnerMedia | Total Intersegment Revenues
Revenues [Abstract]
Total revenues	812	819	2,402	2,538
Latin America | Total Intersegment Revenues
Revenues [Abstract]
Total revenues	$ 0	$ 0	$ 0	$ 0

Revenue Recognition (Revenue Ca

Revenue Recognition (Revenue Categories) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 42,340	$ 44,588	$ 126,069	$ 134,372
Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues	14,365	14,435	42,975	42,984
Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues	5,490	5,399	16,310	15,985
Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues	2,707	2,886	8,330	8,962
Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues	10,081	11,267	30,617	33,954
Content
Disaggregation of Revenue [Line Items]
Total operating revenues	2,130	3,115	6,965	9,850
Advertising
Disaggregation of Revenue [Line Items]
Total operating revenues	1,679	1,523	4,456	5,136
Other
Disaggregation of Revenue [Line Items]
Total operating revenues	1,330	1,692	4,063	5,153
Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	4,558	4,271	12,353	12,348
Operating Segments
Disaggregation of Revenue [Line Items]
Total operating revenues	43,197	45,481	128,522	137,032
Operating Segments | Communications
Disaggregation of Revenue [Line Items]
Total operating revenues	34,287	35,401	102,128	105,837
Operating Segments | Communications | Mobility
Disaggregation of Revenue [Line Items]
Total operating revenues	17,894	17,701	52,445	52,356
Operating Segments | Communications | Mobility | Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues	13,811	13,856	41,314	41,171
Operating Segments | Communications | Mobility | Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Mobility | Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Mobility | Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Mobility | Content
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Mobility | Advertising
Disaggregation of Revenue [Line Items]
Total operating revenues	72	74	206	212
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	4,011	3,771	10,925	10,973
Operating Segments | Communications | Entertainment Group
Disaggregation of Revenue [Line Items]
Total operating revenues	10,053	11,197	30,637	33,893
Operating Segments | Communications | Entertainment Group | Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Entertainment Group | Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues	2,128	2,117	6,329	6,296
Operating Segments | Communications | Entertainment Group | Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues	538	628	1,679	1,969
Operating Segments | Communications | Entertainment Group | Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues	6,556	7,512	20,220	22,872
Operating Segments | Communications | Entertainment Group | Content
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Entertainment Group | Advertising
Disaggregation of Revenue [Line Items]
Total operating revenues	408	421	1,115	1,170
Operating Segments | Communications | Entertainment Group | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	373	517	1,189	1,580
Operating Segments | Communications | Entertainment Group | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	50	2	105	6
Operating Segments | Communications | Business Wireline
Disaggregation of Revenue [Line Items]
Total operating revenues	6,340	6,503	19,046	19,588
Operating Segments | Communications | Business Wireline | Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Business Wireline | Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues	3,348	3,269	9,943	9,649
Operating Segments | Communications | Business Wireline | Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues	2,031	2,252	6,227	6,973
Operating Segments | Communications | Business Wireline | Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Business Wireline | Content
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Communications | Business Wireline | Advertising
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	780	783	2,315	2,430
Operating Segments | Communications | Business Wireline | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	181	199	561	536
Operating Segments | WarnerMedia
Disaggregation of Revenue [Line Items]
Total operating revenues	7,514	8,350	22,176	25,990
Operating Segments | WarnerMedia | Turner
Disaggregation of Revenue [Line Items]
Total operating revenues	3,176	3,007	9,326	9,860
Operating Segments | WarnerMedia | Turner | Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | WarnerMedia | Turner | Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | WarnerMedia | Turner | Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | WarnerMedia | Turner | Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues	1,840	1,927	5,693	5,835
Operating Segments | WarnerMedia | Turner | Content
Disaggregation of Revenue [Line Items]
Total operating revenues	175	89	595	335
Operating Segments | WarnerMedia | Turner | Advertising
Disaggregation of Revenue [Line Items]
Total operating revenues	1,077	913	2,830	3,440
Operating Segments | WarnerMedia | Turner | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	84	78	208	250
Operating Segments | WarnerMedia | Turner | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | WarnerMedia | Home Box Office
Disaggregation of Revenue [Line Items]
Total operating revenues	1,781	1,819	4,905	5,045
Operating Segments | WarnerMedia | Home Box Office | Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | WarnerMedia | Home Box Office | Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | WarnerMedia | Home Box Office | Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | WarnerMedia | Home Box Office | Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues	1,624	1,533	4,403	4,383
Operating Segments | WarnerMedia | Home Box Office | Content
Disaggregation of Revenue [Line Items]
Total operating revenues	150	284	488	655
Operating Segments | WarnerMedia | Home Box Office | Advertising
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | WarnerMedia | Home Box Office | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	7	2	14	7
Operating Segments | WarnerMedia | Home Box Office | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | WarnerMedia | Warner Bros.
Disaggregation of Revenue [Line Items]
Total operating revenues	2,411	3,333	8,907	10,240
Operating Segments | WarnerMedia | Warner Bros. | Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | WarnerMedia | Warner Bros. | Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | WarnerMedia | Warner Bros. | Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | WarnerMedia | Warner Bros. | Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues	11	23	37	67
Operating Segments | WarnerMedia | Warner Bros. | Content
Disaggregation of Revenue [Line Items]
Total operating revenues	2,293	3,129	8,532	9,636
Operating Segments | WarnerMedia | Warner Bros. | Advertising
Disaggregation of Revenue [Line Items]
Total operating revenues	1	13	4	33
Operating Segments | WarnerMedia | Warner Bros. | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	106	168	334	504
Operating Segments | WarnerMedia | Warner Bros. | 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	1,396	1,730	4,218	5,205
Operating Segments | Latin America | Vrio
Disaggregation of Revenue [Line Items]
Total operating revenues	753	1,013	2,392	3,112
Operating Segments | Latin America | Vrio | Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Vrio | Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Vrio | Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Vrio | Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues	753	1,013	2,392	3,112
Operating Segments | Latin America | Vrio | Content
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Vrio | Advertising
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Vrio | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Vrio | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Mexico
Disaggregation of Revenue [Line Items]
Total operating revenues	643	717	1,826	2,093
Operating Segments | Latin America | Mexico | Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues	385	455	1,197	1,376
Operating Segments | Latin America | Mexico | Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Mexico | Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Mexico | Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Mexico | Content
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Mexico | Advertising
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Mexico | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Operating Segments | Latin America | Mexico | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	258	262	629	717
Eliminations and other | WarnerMedia
Disaggregation of Revenue [Line Items]
Total operating revenues	146	191	(962)	845
Eliminations and other | WarnerMedia | Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues	0		0	0
Eliminations and other | WarnerMedia | Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0		0	0
Eliminations and other | WarnerMedia | Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0		0	0
Eliminations and other | WarnerMedia | Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues	87		221	160
Eliminations and other | WarnerMedia | Content
Disaggregation of Revenue [Line Items]
Total operating revenues	(488)		(2,650)	(776)
Eliminations and other | WarnerMedia | Advertising
Disaggregation of Revenue [Line Items]
Total operating revenues	529		1,416	1,451
Eliminations and other | WarnerMedia | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	18		51	10
Eliminations and other | WarnerMedia | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	0		0	0
Eliminations and other | WarnerMedia | Warner Bros. | Content sales with HBO Max
Disaggregation of Revenue [Line Items]
Total operating revenues	(200)		(1,850)
Eliminations and other | WarnerMedia | Warner Bros. | Content sales with HBO Linear
Disaggregation of Revenue [Line Items]
Total operating revenues	(180)	(110)	(510)	(310)
Eliminations and other | WarnerMedia | Warner Bros. | Content sales with Turner
Disaggregation of Revenue [Line Items]
Total operating revenues	(100)	(170)	(220)	(290)
Corporate and Other
Disaggregation of Revenue [Line Items]
Total operating revenues	431	407	1,256	1,218
Corporate and Other | Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues	169	124	464	437
Corporate and Other | Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues	14	13	38	40
Corporate and Other | Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues	138	6	424	20
Corporate and Other | Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Corporate and Other | Content
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Corporate and Other | Advertising
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Corporate and Other | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	52	227	197	605
Corporate and Other | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	58	37	133	116
Corporate and Other | WarnerMedia
Disaggregation of Revenue [Line Items]
Total operating revenues		191
Corporate and Other | WarnerMedia | Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues		0
Corporate and Other | WarnerMedia | Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues		0
Corporate and Other | WarnerMedia | Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues		0
Corporate and Other | WarnerMedia | Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues		57
Corporate and Other | WarnerMedia | Content
Disaggregation of Revenue [Line Items]
Total operating revenues		(387)
Corporate and Other | WarnerMedia | Advertising
Disaggregation of Revenue [Line Items]
Total operating revenues		523
Corporate and Other | WarnerMedia | Other
Disaggregation of Revenue [Line Items]
Total operating revenues		(2)
Corporate and Other | WarnerMedia | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues		0
Eliminations and consolidations
Disaggregation of Revenue [Line Items]
Total operating revenues	(1,288)	(1,300)	(3,709)	(3,878)
Eliminations and consolidations | Wireless
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Eliminations and consolidations | Advanced Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Eliminations and consolidations | Legacy Voice & Data
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Eliminations and consolidations | Subscription
Disaggregation of Revenue [Line Items]
Total operating revenues	(790)	(798)	(2,349)	(2,475)
Eliminations and consolidations | Content
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Eliminations and consolidations | Advertising
Disaggregation of Revenue [Line Items]
Total operating revenues	(408)	(421)	(1,115)	(1,170)
Eliminations and consolidations | Other
Disaggregation of Revenue [Line Items]
Total operating revenues	(90)	(81)	(245)	(233)
Eliminations and consolidations | Equipment
Disaggregation of Revenue [Line Items]
Total operating revenues	0	0	0	0
Eliminations and consolidations | Mobility | HBO Max customer subscriptions at Mobility
Disaggregation of Revenue [Line Items]
Total operating revenues	(120)		(150)
Eliminations and consolidations | Entertainment Group | Turner channel distribution arrangements with Entertainment Group
Disaggregation of Revenue [Line Items]
Total operating revenues	(370)	(430)	(1,170)	(1,340)
Eliminations and consolidations | Entertainment Group | HBO linear channel distribution arrangements with Entertainment Group
Disaggregation of Revenue [Line Items]
Total operating revenues	$ (250)	$ (330)	$ (880)	$ (1,000)

Revenue Recognition (Narrative)

Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Contract with Customer, Asset and Liability [Abstract]
Beginning of period contract liability recorded as customer contract revenue during period	$ 5,340
Contract asset balance - current portion	1,729	$ 1,611
Contract liability balance - current portion	5,762	$ 5,939
Revenue, Performance Obligation [Abstract]
Aggregate amount of the transaction price allocated to remaining performance obligations	$ 39,385
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 | 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	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Deferred Acquisition Costs
Capitalized Contract Cost, Net [Abstract]
Total deferred costs	$ 5,945		$ 5,453
Deferred cost amortization	1,969	$ 1,565
Deferred Acquisition Costs | Other current assets
Capitalized Contract Cost, Net [Abstract]
Total deferred costs	2,831		2,462
Deferred Acquisition Costs | Other Assets
Capitalized Contract Cost, Net [Abstract]
Total deferred costs	3,114		2,991
Deferred Fulfillment Costs
Capitalized Contract Cost, Net [Abstract]
Total deferred costs	10,015		10,958
Deferred cost amortization	3,888	$ 3,656
Deferred Fulfillment Costs | Other current assets
Capitalized Contract Cost, Net [Abstract]
Total deferred costs	4,234		4,519
Deferred Fulfillment Costs | Other Assets
Capitalized Contract Cost, Net [Abstract]
Total deferred costs	$ 5,781		$ 6,439

Revenue Recognition (Contract A

Revenue Recognition (Contract Assets and Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Contract with Customer, Asset and Liability [Abstract]
Contract asset	$ 2,817	$ 2,472
Contract liability	$ 6,617	$ 6,999

Revenue Recognition (Remaining

Revenue Recognition (Remaining Performance Obligations) (Details)	Sep. 30, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Aggregate amount of the transaction price allocated to remaining performance obligations (percentage)	74.00%
Expected timing of satisfaction for remaining performance obligations, period	15 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Aggregate amount of the transaction price allocated to remaining performance obligations (percentage)	26.00%
Expected timing of satisfaction for remaining performance obligations, period

Pension And Postretirement Be_3

Pension And Postretirement Benefits (Pension And Postretirement Benefit Costs Included In Operating Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Actuarial (gain) loss			$ 63	$ 4,048
Qualified Plan | Funded Plan
Defined Benefit Plan Disclosure [Line Items]
Net (credit) cost	$ (747)	$ 1,400	(2,243)	2,727
Pension Cost | Qualified Plan | Funded Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	257	260	772	743
Interest cost on projected / accumulated postretirement benefit obligation	421	463	1,265	1,520
Expected return on assets	(888)	(905)	(2,667)	(2,636)
Amortization of prior service credit	(28)	(28)	(85)	(85)
Actuarial (gain) loss	0	1,888	0	4,019
Net (credit) cost	(238)	1,678	(715)	3,561
Postretirement Cost | Qualified Plan | Funded Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	14	19	40	55
Interest cost on projected / accumulated postretirement benefit obligation	104	185	312	557
Expected return on assets	(44)	(57)	(133)	(169)
Amortization of prior service credit	(583)	(425)	(1,747)	(1,277)
Net (credit) cost	$ (509)	$ (278)	$ (1,528)	$ (834)

Pension And Postretirement Be_4

Pension And Postretirement Benefits (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss			$ 63	$ 4,048
Supplemental Retirement and Savings Plans
Defined Benefit Plan Disclosure [Line Items]
Net supplemental retirement pension benefits costs	$ 19	$ 24	$ 57	$ 74
Actuarial loss	$ 63

Fair Value Measurements And D_3

Fair Value Measurements And Disclosure (Long-Term Debt And Other Financial Instruments) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and debentures	$ 155,218	$ 161,109
Commercial paper	1,754	0
Bank borrowings	0	4
Investment securities	3,669	3,723
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes and debentures	181,872	182,124
Commercial paper	1,754	0
Bank borrowings	0	4
Investment securities	$ 3,669	$ 3,723

Fair Value Measurements And D_4

Fair Value Measurements And Disclosure (Fair Value Leveling) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale Debt Securities	$ 1,524	$ 1,444
Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives		2
Cross-currency swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	322	172
Liability Derivatives	(4,244)	(3,187)
Interest rate locks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives		11
Liability Derivatives		(95)
Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	16	89
Liability Derivatives	(6)
Fixed income equities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	233	229
Domestic equities | Securities Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	893	844
International equities | Securities Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	148	183
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]
Asset Derivatives		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 | Interest rate locks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives		0
Liability Derivatives		0
Level 1 | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	0	0
Liability Derivatives	0
Level 1 | Fixed income equities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	233	229
Level 1 | Domestic equities | Securities Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	893	844
Level 1 | International equities | Securities Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	148	183
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-Sale Debt Securities	1,524	1,444
Level 2 | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives		2
Level 2 | Cross-currency swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	322	172
Liability Derivatives	(4,244)	(3,187)
Level 2 | Interest rate locks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives		11
Liability Derivatives		(95)
Level 2 | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	16	89
Liability Derivatives	(6)
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 Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	0	0
Level 2 | International equities | Securities Investment
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]
Asset Derivatives		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 | Interest rate locks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives		0
Liability Derivatives		0
Level 3 | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	0	0
Liability Derivatives	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 Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	0	0
Level 3 | International equities | Securities Investment
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		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Total gains (losses) recognized on equity securities	$ 64	$ 21	$ 22	$ 231
Gains (Losses) recognized on equity securities sold	0	74	(24)	101
Unrealized gains (losses) recognized on equity securities held at end of period	$ 64	$ (53)	$ 46	$ 130

Fair Value Measurements And D_6

Fair Value Measurements And Disclosure (Narrative) (Details) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	May 30, 2020USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2020EUR (€)	Dec. 31, 2019USD ($)
Fair Value Disclosures [Abstract]
Available-for-sale debt securities		$ 1,524	$ 1,524		$ 1,444
Available-for-sale debt securities - maturities less than 1 year		62	62
Available-for-sale debt securities - maturities within 1 to 3 years		155	155
Available-for-sale debt securities - maturities within 3 to 5 years		163	163
Available-for-sale debt securities - maturities for 5 or more years		1,144	1,144
Fair Value, Option, Quantitative Disclosures [Line Items]
Anticipated reclassification of holding losses during the next 12 months - cash flow hedges		95	95
Net losses on net investment hedges recognized in accumulated OCI		70	75
Collateral submitted to counterparty		485	485		204
Collateral received from counterparty		4	4		$ 44
Collateral contingently payable to the counterparty		25	25
Measurement Input, Entity Credit Risk
Fair Value, Option, Quantitative Disclosures [Line Items]
Collateral contingently payable to the counterparty		3,237	3,237
Measurement Input, Entity Credit Risk | Communications | DirecTV
Fair Value, Option, Quantitative Disclosures [Line Items]
Collateral contingently payable to the counterparty		$ 241	$ 241
Net Investment Hedging
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate principal amount of debt | €				€ 1,450,000,000
Interest rate locks | Cash Flow Hedging
Fair Value, Option, Quantitative Disclosures [Line Items]
Payment for hedge	$ 731

Fair Value Measurements And D_7

Fair Value Measurements And Disclosure (Notional Amount Of Our Outstanding Derivative Positions) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Derivative [Line Items]
Notional amounts of outstanding derivative positions	$ 43,173	$ 46,947
Interest rate swaps
Derivative [Line Items]
Notional amounts of outstanding derivative positions	0	853
Cross-currency swaps
Derivative [Line Items]
Notional amounts of outstanding derivative positions	42,969	42,325
Interest rate locks
Derivative [Line Items]
Notional amounts of outstanding derivative positions	0	3,500
Foreign exchange contracts
Derivative [Line Items]
Notional amounts of outstanding derivative positions	$ 204	$ 269

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		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on interest rate swaps	$ (1)	$ 0	$ (5)	$ 59
Gain (Loss) on long-term debt	1	0	5	(59)
Cross-currency swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) recognized in accumulated OCI	1,079	(487)	(2,091)	(1,082)
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) recognized in accumulated OCI	10	5	(1)	2
Foreign exchange contracts | Other income (expense) - net
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from accumulated OCI into income	(9)	6	4	16
Interest rate locks
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) recognized in accumulated OCI	0	(202)	(648)	(225)
Interest rate locks | Interest income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from accumulated OCI into income	$ (25)	$ (15)	$ (59)	$ (47)

Acquisitions, Dispositions An_2

Acquisitions, Dispositions And Other Adjustments (Narrative) (Details) - USD ($) $ in Millions	Oct. 31, 2020	Oct. 13, 2020	Jun. 30, 2020	May 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Business Combination Segment Allocation [Line Items]
Acquisitions, net of cash acquired								$ 1,215	$ 1,124
Acquisition of business - Goodwill								143,688		$ 146,241
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amount received from sale of interest								428	3,775
Debt guarantee, original amount covered								1,100
Debt guarantee								600
37/39 GHz Licenses
Business Combination Segment Allocation [Line Items]
Acquisitions, net of cash acquired								$ 1,062	$ 1,022
Payments to acquire intangible assets			$ 2,379		$ 949		$ 1,186
FiberTower Corporation | 39 GHz Licenses Exchanged for Vouchers
Business Combination Segment Allocation [Line Items]
Book value of indefinite-lived intangible assets						$ 300
Gain on disposition of intangible asset						$ 900
Value of consideration received in a noncash transaction							$ 1,200
Subsequent Event | CME
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percent of interest disposed		65.30%
Amount received from sale of interest		$ 1,100
Subsequent Event | Puerto Rico And U.S. Virgin Islands Operations | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration for completion of sale of operations	$ 1,950
Payments to redeem cumulative preferred interest in subsidiary that held notes secured by proceeds of sale	$ 1,950
WarnerMedia | HBO LAG
Business Combination Segment Allocation [Line Items]
Acquisitions, net of cash acquired				$ 141
Acquisition of business, pre-tax gain				68
Acquisition of intangible assets, trade names				640
Acquisition of business - Goodwill				343
WarnerMedia | HBO LAG | Distribution Networks — Net
Business Combination Segment Allocation [Line Items]
Acquisition of other intangible assets				$ 271

Sales Of Receivables (Equipment

Sales Of Receivables (Equipment Installment and AT&T Revolving Programs) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Equipment Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross receivable	$ 4,241	$ 4,576
Other Assets	1,570	1,632
Outstanding portfolio of receivables derecognized from our consolidated balance sheets	8,238	9,713
Cash proceeds received, net of remittances	5,944	7,211
Equipment Installment | Notes receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	2,190	2,467
Equipment Installment | Trade receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	481	477
Revolving
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross receivable	3,516	3,324
Other Assets	187	515
Outstanding portfolio of receivables derecognized from our consolidated balance sheets	5,100	4,300
Cash proceeds received, net of remittances	5,100	4,300
Revolving | Notes receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	0	0
Revolving | Trade receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 3,329	$ 2,809

Sales Of Receivables (Finance R

Sales Of Receivables (Finance Receivables) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net receivables sold	$ 3,553	$ 2,864	$ 11,510	$ 8,361
Cash proceeds received	3,563	2,873	11,590	8,725
Guarantee obligation recorded	58	39	172	475
Equipment Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross receivables sold	1,624	2,098	5,497	7,043
Net receivables sold	1,578	2,014	5,300	6,693
Cash proceeds received	1,387	1,700	4,562	5,895
Deferred purchase price recorded	226	352	811	922
Guarantee obligation recorded	$ 55	$ 67	$ 126	$ 261

Sales Of Receivables (Finance_2

Sales Of Receivables (Finance Receivables Repurchased) (Details) - Equipment Installment - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of repurchased receivables	$ 373	$ 268	$ 946	$ 926
Carrying value of deferred purchase price	373	259	931	891
Gain on repurchases	$ 0	$ 9	$ 15	$ 35

Sales Of Receivables (Equipme_2

Sales Of Receivables (Equipment Installment and AT&T Revolving Programs) (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2020
Equipment Installment Program | Guarantee Obligation
Accounts, Notes, Loans and Financing Receivable [Line Items]
Guarantee obligation			$ 384	$ 319
Equipment Installment Program | Accounts payable and accrued liabilities | Guarantee Obligation
Accounts, Notes, Loans and Financing Receivable [Line Items]
Guarantee obligation			148	234
Equipment Installment Program | Deferred Purchase Price Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred purchase price receivable			2,336	2,163
Equipment Installment Program | Deferred Purchase Price Receivable | Other current assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Deferred purchase price receivable			$ 1,569	1,538
Revolving Receivables Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revolving agreement, term			1 year
Revolving agreement, transfer amount (up to)		$ 5,300	$ 4,300
Revolving agreement extension term	1 year
Receivables pledged as collateral				$ 3,516

Sales Of Receivables (Summary o

Sales Of Receivables (Summary of Receivables Sold) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Receivables [Abstract]
Gross receivables sold/cash proceeds received	$ 3,563,000,000	$ 2,873,000,000	$ 11,590,000,000	$ 8,725,000,000
Collections reinvested under revolving agreement	3,563,000,000	2,873,000,000	10,590,000,000	5,000,000,000
Collections not reinvested	200,000,000	269,000,000	200,000,000	269,000,000
Net cash proceeds received (remitted)	(200,000,000)	(269,000,000)	800,000,000	3,456,000,000
Net receivables sold	3,553,000,000	2,864,000,000	11,510,000,000	8,361,000,000
Obligations recorded (reversed)	58,000,000	39,000,000	172,000,000	475,000,000
Initial sale of receivables	$ 0	$ 0	$ 1,000,000,000	$ 3,725,000,000

Leases (Narrative) (Details)

Leases (Narrative) (Details) - Maximum	Sep. 30, 2020
Lessee, Lease, Description [Line Items]
Operating Lease, remaining term of contract	15 years
Finance Lease, remaining term of contract	15 years

Leases (Components of Lease Exp

Leases (Components of Lease Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 1,546	$ 1,481	$ 4,372	$ 4,333
Finance lease cost:
Amortization of right-of-use assets	76	67	216	203
Interest on lease obligation	39	42	116	126
Total finance lease cost	$ 115	$ 109	$ 332	$ 329

Leases (Supplemental Cash Flow

Leases (Supplemental Cash Flow Information Related to Leases) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash Flows from Operating Activities
Operating cash flows from operating leases	$ 3,651	$ 3,338
Supplemental Lease Cash Flow Disclosures
Operating lease right-of-use assets obtained in exchange for new operating lease obligations	$ 3,908	$ 7,068

Leases (Supplemental Balance Sh

Leases (Supplemental Balance Sheet Information Related to Leases) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Operating Leases
Operating lease right-of-use assets	$ 24,546	$ 24,039
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Accounts payable and accrued liabilities	$ 3,483	$ 3,451
Operating lease obligation	22,056	21,804
Total operating lease obligation	25,539	25,255
Finance Leases
Property, plant and equipment, at cost	3,485	3,534
Accumulated depreciation and amortization	(1,363)	(1,296)
Property, plant and equipment, net	$ 2,122	$ 2,238
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
Current portion of long-term debt	$ 174	$ 162
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:DebtCurrent	us-gaap:DebtCurrent
Long-term debt	$ 1,732	$ 1,872
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtNoncurrent	us-gaap:LongTermDebtNoncurrent
Total finance lease obligation	$ 1,906	$ 2,034
Weighted-Average Remaining Lease Term (years), Operating leases	8 years 6 months		8 years 8 months 12 days
Weighted-Average Remaining Lease Term (years), Finance leases	10 years 1 month 6 days		10 years 4 months 24 days
Weighted-Average Discount Rate, Operating leases	4.10%		4.30%
Weighted-Average Discount Rate, Finance leases	8.10%		8.40%

Leases (Future Minimum Maturiti

Leases (Future Minimum Maturities of Lease Liabilities) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Operating Leases
2020	$ 1,226
2021	4,679
2022	4,372
2023	3,981
2024	3,449
Thereafter	13,543
Total lease payments	31,250
Less imputed interest	(5,711)
Total	25,539	$ 25,255
Finance Leases
2020	99
2021	316
2022	298
2023	278
2024	258
Thereafter	1,720
Total lease payments	2,969
Less imputed interest	(1,063)
Total	$ 1,906	$ 2,034

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details) $ / shares in Units, € / shares in Thousands, $ in Millions	1 Months Ended	9 Months Ended
	Sep. 30, 2020segment€ / shares	Sep. 30, 2020€ / shares	Sep. 30, 2020USD ($)$ / sharesshares	Dec. 31, 2019$ / sharesshares
Class of Stock [Line Items]
Preferred stock, authorized (in shares)			10,000,000	10,000,000
Preferred stock, par value (in dollars per share) | $ / shares			$ 1	$ 1
Telco LLC
Class of Stock [Line Items]
Nonconvertible cumulative preferred interests issued | $			$ 2,000
Initial preferred distribution percentage	4.25%
Distribution reset period	7 years
Period post issuance date that preferred interests can be called at issue price	7 years
Option to require redemption, certain contingent events, failure of Telco LLC to pay preferred distributions, minimum number of periods | segment	2
Preferred Stock - Series A
Class of Stock [Line Items]
Preferred stock, outstanding (in shares)			48,000	48,000
Preferred stock, issued (in shares)			48,000	48,000
Preferred stock, liquidation preference per share (in dollars/Euros per share) | $ / shares			$ 25,000
Preferred stock, dividend rate		5.00%
Preferred Stock - Series B
Class of Stock [Line Items]
Preferred stock, outstanding (in shares)			20,000	0
Preferred stock, issued (in shares)			20,000	0
Preferred stock, liquidation preference per share (in dollars/Euros per share) | € / shares	€ 100	€ 100
Preferred stock, dividend rate		2.875%
Preferred Stock - Series C
Class of Stock [Line Items]
Preferred stock, outstanding (in shares)			70,000	0
Preferred stock, issued (in shares)			70,000	0
Preferred stock, liquidation preference per share (in dollars/Euros per share) | $ / shares			$ 25,000
Preferred stock, dividend rate		4.75%

Additional Financial Informat_3

Additional Financial Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	$ 9,758	$ 6,588	$ 12,130	$ 5,204
Restricted cash in Other current assets	2	15	69	61
Restricted cash in Other Assets	89	179	96	135
Cash and Cash Equivalents and Restricted Cash	9,849	6,782	$ 12,295	$ 5,400
Cash paid (received) during the period for:
Interest	6,661	6,938
Income taxes, net of refunds	306	420
Spectrum acquisitions	1,215	1,124
Spectrum Licenses
Cash paid (received) during the period for:
Spectrum acquisitions	$ 1,062	$ 1,022

Additional Financial Informat_4

Additional Financial Information (Narrative) (Details) € in Millions, R in Millions, $ in Millions	1 Months Ended		3 Months Ended					9 Months Ended
	May 31, 2020USD ($)	Apr. 30, 2018USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2020EUR (€)	Sep. 30, 2020ZAR (R)	Jun. 30, 2020USD ($)	Jun. 30, 2020EUR (€)	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Apr. 30, 2020USD ($)
Additional Financial Information [Line Items]
Vendor financing payables			$ 3,252					$ 3,252
Vendor financing payables due within one year			1,474					1,474
Long-term debt obligations			158,878					158,878
Repayment of long-term debt								$ 37,583	$ 24,368
Minimum
Additional Financial Information [Line Items]
Vendor financing payables, noncurrent, period due within								2 years
Maximum
Additional Financial Information [Line Items]
Vendor financing payables, noncurrent, period due within								3 years
Notes And Debentures
Additional Financial Information [Line Items]
Commercial paper			$ 1,710					$ 1,710
Notes And Debentures | Long-Term Debt Issuance
Additional Financial Information [Line Items]
Weighted average interest rate			3.20%					3.20%
Notes And Debentures | Long-Term Debt Redemptions
Additional Financial Information [Line Items]
Weighted average interest rate			3.20%					3.20%
Term Loan Credit Agreement
Additional Financial Information [Line Items]
Repayment of long-term debt						$ 1,800
Term Loan Credit Agreement | Bank of America, N.A.
Additional Financial Information [Line Items]
Short-term borrowings										$ 5,500
Repayments on short-term borrowings	$ 5,500
AT&T Global Notes Due 2027 To 2060
Additional Financial Information [Line Items]
Proceeds from issuance of debt						16,545
AT&T Global Notes Due 2028 To 2038
Additional Financial Information [Line Items]
Proceeds from issuance of debt						3,281	€ 3,000
AT&T Global Notes Due 2028 To 2061
Additional Financial Information [Line Items]
Proceeds from issuance of debt			$ 11,000
AT&T Global Notes Due 2020 To 2047
Additional Financial Information [Line Items]
Repayment of long-term debt						12,689
Annual Put Reset Securities
Additional Financial Information [Line Items]
Repayment of long-term debt						$ 1,000
AT&T, WarnerMedia and DIRECTV Notes Due 2022
Additional Financial Information [Line Items]
Repayment of long-term debt			4,264
AT&T and WarnerMedia Global Notes Due 2022 to 2023
Additional Financial Information [Line Items]
Repayment of long-term debt			1,158
AT&T Floating-Rate Notes Due 2020
Additional Financial Information [Line Items]
Repayment of long-term debt			2,637	€ 2,250
Sky Servicos de Banda Larga Ltda. Floating-Rate Private Loan Due 2021
Additional Financial Information [Line Items]
Proceeds from issuance of debt		$ 1,000
Repayment of long-term debt			638		R 3,381
AT&T Global Notes And Subsidiary Notes Due 2021 To 2025
Additional Financial Information [Line Items]
Repayment of long-term debt			11,384
AT&T and Subsidiary Notes Due 2031 to 2058
Additional Financial Information [Line Items]
Repayment of long-term debt			1,459
Amount of debt exchanged			17,677
Three New Series of Global Notes Due 2053 to 2059
Additional Financial Information [Line Items]
Proceeds from issuance of debt			$ 21,500
Vendor Financing Program
Additional Financial Information [Line Items]
Noncash investing activities								$ 3,148	$ 1,917