Earnings Per Share - Reconciliation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings per share
Net income (loss) attributable to TDS common shareholders used in basic earnings (loss) per share	$ (9)	$ 44
Noncontrolling interest adjustment	0	(1)
Net income (loss) attributable to TDS common shareholders used in diluted earnings (loss) per share	$ (9)	$ 43
Weighted average number of shares used in basic earnings (loss) per share:	113	115
Effects of dilutive securities (in shares)	0	1
Weighted average number of shares used in diluted earnings (loss) per share	113	116
Basic earnings (loss) per share attributable to TDS common shareholders	$ (0.08)	$ 0.38
Diluted earnings (loss) per share attributable to TDS common shareholders	$ (0.08)	$ 0.37
Common Shares
Earnings per share
Weighted average number of shares used in basic earnings (loss) per share:	106	108
Series A Common Shares
Earnings per share
Weighted average number of shares used in basic earnings (loss) per share:	7	7