Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Revenues	$ 19,759	$ 11,113
Operating expenses
Selling, general and administrative	4,805	3,688
Depreciation and amortization	4,289	1,718
Total operating expenses	17,620	9,574
Operating income	2,139	1,539
Other income (expense)
Interest expense	(792)	(185)
Interest expense to affiliates	(46)	(99)
Interest income	3	12
Other expense, net	(125)	(10)
Total other expense, net	(960)	(282)
Income before income taxes	1,179	1,257
Income tax expense	(246)	(306)
Net income	933	951
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on cash flow hedges, net of tax effect of $12 and $(276)	34	(792)
Unrealized gain on foreign currency translation adjustment, net of tax effect of $— and $—	2	0
Other comprehensive income (loss)	36	(792)
Total comprehensive income	$ 969	$ 159
Earnings per share
Basic (in USD per share)	$ 0.75	$ 1.11
Diluted (in USD per share)	$ 0.74	$ 1.10
Weighted average shares outstanding
Basic (in shares)	1,243,520,026	858,148,284
Diluted (in shares)	1,252,783,564	865,998,532
Postpaid revenues
Revenues
Revenues	$ 10,303	$ 5,887
Prepaid revenues
Revenues
Revenues	2,351	2,373
Wholesale revenues
Revenues
Revenues	897	325
Roaming and other service revenues
Revenues
Revenues	641	261
Service
Revenues
Revenues	14,192	8,846
Operating expenses
Cost of services and equipment sales	3,384	1,639
Equipment
Revenues
Revenues	5,346	2,117
Operating expenses
Cost of services and equipment sales	5,142	2,529
Other revenues
Revenues
Revenues	$ 221	$ 150