Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues
Revenues	$ 11,113	$ 11,080
Operating expenses
Selling, general and administrative	3,688	3,442
Depreciation and amortization	1,718	1,600
Total operating expenses	9,574	9,604
Operating income	1,539	1,476
Other income (expense)
Interest expense	(185)	(179)
Interest expense to affiliates	(99)	(109)
Interest income	12	8
Other (expense) income, net	(10)	7
Total other expense, net	(282)	(273)
Income before income taxes	1,257	1,203
Income tax expense	(306)	(295)
Net income	951	908
Net income	951	908
Other comprehensive loss, net of tax
Unrealized loss on cash flow hedges, net of tax effect of $(276) and $(66)	(792)	(189)
Other comprehensive income (loss)	(792)	(189)
Total comprehensive income	$ 159	$ 719
Earnings per share
Basic (in USD per share)	$ 1.11	$ 1.07
Diluted (in USD per share)	$ 1.10	$ 1.06
Weighted average shares outstanding
Basic (in shares)	858,148,284	851,223,498
Diluted (in shares)	865,998,532	858,643,481
Branded postpaid revenues
Revenues
Revenues	$ 5,887	$ 5,493
Branded prepaid revenues
Revenues
Revenues	2,373	2,386
Wholesale revenues
Revenues
Revenues	325	304
Roaming and other service revenues
Revenues
Revenues	128	94
Service
Revenues
Revenues	8,713	8,277
Operating expenses
Cost of services and equipment sales	1,639	1,546
Equipment
Revenues
Revenues	2,117	2,516
Operating expenses
Cost of services and equipment sales	2,529	3,016
Other revenues
Revenues
Revenues	$ 283	$ 287