Consolidated Statement Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 72	$ 188	$ 269
Change related to retirement plan
Net actuarial gains (losses)	(4)	9	3
Amortization of prior service cost and unrecognized net gain	4	4	3
Amounts included in net periodic benefit cost for the period	0	13	6
Change in deferred income taxes	0	(4)	(1)
Change related to retirement plan, net of tax	0	9	5
Net change in accumulated other comprehensive income	0	9	5
Comprehensive income	72	197	274
Less: Net income attributable to noncontrolling interests, net of tax	10	32	43
Comprehensive income attributable to TDS shareholders	$ 62	$ 165	$ 231