Consolidated Statement of Changes in Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
TDS Common and Series A Common Share dividends (in dollars per share)	$ 0.175	$ 0.170	$ 0.525	$ 0.51
Series VV Preferred Shares
TDS Preferred share dividends (in dollars per share)	183		183
Series UU Preferred Shares
TDS Preferred share dividends (in dollars per share)	$ 414		$ 966