Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 12	$ 72
Change related to retirement plan Amounts included in net periodic benefit cost for the period
Amortization of prior service cost and unrecognized net gain	0	1
Comprehensive income	12	73
Less: Net income attributable to noncontrolling interests, net of tax	4	11
Comprehensive income attributable to TDS shareholders	$ 8	$ 62