Consolidated Statement Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating revenues
Service	$ 978	$ 997
Equipment and product sales	247	241
Total operating revenues	1,225	1,238
Operating expenses
Cost of services (excluding Depreciation, amortization and accretion reported below)	288	282
Cost of equipment and products	246	270
Selling, general and administrative	395	407
Depreciation, amortization and accretion	221	211
(Gain) loss on asset disposals, net	2	4
(Gain) loss on license sales and exchanges, net	(7)	(17)
Total operating expenses	1,145	1,157
Operating income	80	81
Investment and other income (expense)
Equity in earnings of unconsolidated entities	38	32
Interest and dividend income	5	4
Interest expense	(43)	(42)
Other, net	1	2
Total investment and other income (expense)	1	(4)
Income before income taxes	81	77
Income tax expense	24	34
Net income	57	43
Less: Net income attributable to noncontrolling interests, net of tax	18	6
Net income attributable to TDS shareholders	39	37
TDS Preferred dividend requirement	0
Net income available to TDS shareholders	$ 39	$ 37
Basic weighted average shares outstanding	111	110
Basic earnings per share available to TDS common shareholders	$ 0.35	$ 0.34
Diluted weighted average shares outstanding	113	112
Diluted earnings (loss) per share available to TDS common shareholders	$ 0.34	$ 0.33
Dividends per share to TDS shareholders	$ 0.160	$ 0.155