Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Revenues	$ 19,950	$ 17,671	$ 39,709	$ 28,784
Operating expenses
Selling, general and administrative	4,823	5,604	9,628	9,292
Impairment expense	0	418	0	418
Depreciation and amortization	4,077	4,064	8,366	5,782
Total operating expenses	17,844	16,851	35,464	26,425
Operating income	2,106	820	4,245	2,359
Other income (expense)
Interest expense	(820)	(776)	(1,612)	(961)
Interest expense to affiliates	(32)	(63)	(78)	(162)
Interest income	2	6	5	18
Other expense, net	(1)	(195)	(126)	(205)
Total other expense, net	(851)	(1,028)	(1,811)	(1,310)
Income (loss) from continuing operations before income taxes	1,255	(208)	2,434	1,049
Income tax expense	(277)	(2)	(523)	(308)
Income (loss) from continuing operations	978	(210)	1,911	741
Income from discontinued operations, net of tax	0	320	0	320
Net income	978	110	1,911	1,061
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on cash flow hedges, net of tax effect of $12, $3, $24, and $(273)	34	2	68	(790)
Unrealized gain on foreign currency translation adjustment, net of tax effect of $0, $0, $0, and $0	1	0	3	0
Other comprehensive income (loss)	35	2	71	(790)
Total comprehensive income	$ 1,013	$ 112	$ 1,982	$ 271
Basic earnings (loss) per share:
Continuing operations (in USD per share)	$ 0.78	$ (0.17)	$ 1.53	$ 0.71
Discontinued operations (in USD per share)	0	0.26	0	0.30
Basic (in USD per share)	0.78	0.09	1.53	1.01
Diluted earnings (loss) per share:
Continuing operations (in USD per share)	0.78	(0.17)	1.52	0.70
Discontinued operations (in USD per share)	0	0.26	0	0.30
Diluted (in USD per share)	$ 0.78	$ 0.09	$ 1.52	$ 1.00
Weighted average shares outstanding
Basic (in shares)	1,247,563,331	1,236,528,444	1,245,552,847	1,047,338,364
Diluted (in shares)	1,253,718,122	1,236,528,444	1,254,264,464	1,057,120,389
Postpaid revenues
Revenues
Revenues	$ 10,492	$ 9,959	$ 20,795	$ 15,846
Prepaid revenues
Revenues
Revenues	2,427	2,311	4,778	4,684
Wholesale revenues
Revenues
Revenues	935	408	1,832	733
Other service revenues
Revenues
Revenues	638	552	1,279	813
Service
Revenues
Revenues	14,492	13,230	28,684	22,076
Operating expenses
Cost of services and equipment sales	3,491	3,098	6,875	4,737
Equipment
Revenues
Revenues	5,215	4,269	10,561	6,386
Operating expenses
Cost of services and equipment sales	5,453	3,667	10,595	6,196
Other revenues
Revenues
Revenues	$ 243	$ 172	$ 464	$ 322