Consolidated Statement of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating revenues
Total operating revenues	$ 1,318	$ 1,261
Operating expenses
Selling, general and administrative	388	411
Depreciation, amortization and accretion	224	235
(Gain) loss on asset disposals, net	5	4
(Gain) loss on sale of business and other exit costs, net	(1)	0
Total operating expenses	1,208	1,189
Operating income	110	72
Investment and other income (expense)
Equity in earnings of unconsolidated entities	42	45
Interest and dividend income	3	6
Interest expense	(53)	(37)
Total investment and other income (expense)	(8)	14
Income before income taxes	102	86
Income tax expense	31	3
Net income	71	83
Less: Net income attributable to noncontrolling interests, net of tax	12	14
Net income attributable to TDS shareholders	59	69
TDS Preferred dividend requirement	2	0
Net income attributable to TDS common shareholders	$ 57	$ 69
Basic weighted average shares outstanding (in shares)	114	115
Basic earnings per share attributable to TDS common shareholders (in dollars per share)	$ 0.49	$ 0.60
Diluted weighted average shares outstanding (in shares)	116	116
Diluted earnings per share attributable to TDS common shareholders (in dollars per share)	$ 0.48	$ 0.59
Service
Operating revenues
Total operating revenues	$ 1,042	$ 1,026
Operating expenses
Cost of goods and services	299	293
Equipment and product sales
Operating revenues
Total operating revenues	276	235
Operating expenses
Cost of goods and services	$ 293	$ 246