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