Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Branded postpaid revenues	$ 4,820	$ 4,509	$ 9,545	$ 8,811
Branded prepaid revenues	2,334	2,119	4,633	4,144
Wholesale revenues	234	207	504	407
Roaming and other service revenues	57	53	92	104
Total service revenues	7,445	6,888	14,774	13,466
Equipment revenues	2,506	2,188	4,549	4,039
Other revenues	262	211	503	446
Total revenues	10,213	9,287	19,826	17,951
Operating expenses
Cost of services, exclusive of depreciation and amortization shown separately below	1,518	1,429	2,926	2,850
Cost of equipment sales	2,846	2,619	5,532	4,993
Selling, general and administrative	2,915	2,772	5,870	5,521
Depreciation and amortization	1,519	1,575	3,083	3,127
Cost of MetroPCS business combination	0	59	0	95
Gains on disposal of spectrum licenses	(1)	0	(38)	(636)
Total operating expense	8,797	8,454	17,373	15,950
Operating income	1,416	833	2,453	2,001
Other income (expense)
Interest expense	(265)	(368)	(604)	(707)
Interest expense to affiliates	(131)	(93)	(231)	(172)
Interest income	6	3	13	6
Other expense, net	(92)	(3)	(90)	(5)
Total other expense, net	(482)	(461)	(912)	(878)
Income before income taxes	934	372	1,541	1,123
Income tax expense	(353)	(147)	(262)	(419)
Dividends on preferred stock	(14)	(14)	(28)	(28)
Net income attributable to common stockholders	567	211	1,251	676
Net income	581	225	1,279	704
Other comprehensive income, net of tax
Unrealized gain on available-for-sale securities, net of tax effect $1, $2, $2 and $0	1	3	2	0
Other comprehensive income	1	3	2	0
Total comprehensive income	$ 582	$ 228	$ 1,281	$ 704
Earnings per share
Basic (in USD per share)	$ 0.68	$ 0.26	$ 1.51	$ 0.82
Diluted (in USD per share)	$ 0.67	$ 0.25	$ 1.47	$ 0.81
Weighted average shares outstanding
Basic (in shares)	830,971,528	822,434,490	829,356,255	820,933,126
Diluted (in shares)	870,456,447	829,752,956	870,853,652	829,662,053