Consolidated Statement of Changes in Equity - USD ($) $ in Millions	Total	Series A Common and Common shares	Capital in excess of par value	Preferred Shares	Treasury shares	Accumulated other comprehensive income (loss)	Retained earnings	Total TDS shareholders' equity	Noncontrolling interests
Retained earnings | ASC 842	$ 2						$ 2	$ 2
Beginning balance at Dec. 31, 2018	5,293	$ 1	$ 2,432		$ (519)	$ (10)	2,656	4,560	$ 733
Net income attributable to TDS shareholders	121						121	121
Net income attributable to noncontrolling interests classified as equity	26							0	26
Other comprehensive income (loss)	1					1		1
TDS Common and Series A Common Share dividends	(75)						(75)	(75)
Dividend reinvestment plan	15		1		20		(6)	15
Incentive and compensation plans	12		18		20		(26)	12
Adjust investment in subsidiaries for repurchases, issuances and other compensation plans	12		17					17	(5)
Distributions to noncontrolling interests	(3)							0	(3)
Ending balance at Dec. 31, 2019	5,404	1	2,468		(479)	(9)	2,672	4,653	751
Retained earnings | ASC 326	(2)						(2)	(2)
Net income attributable to TDS shareholders	226						226	226
Net income attributable to noncontrolling interests classified as equity	43							0	43
Other comprehensive income (loss)	5					5		5
TDS Common and Series A Common Share dividends	(78)						(78)	(78)
Repurchase of Common Shares	(14)				(14)			(14)
Dividend reinvestment plan	3				3			3
Incentive and compensation plans	18		21		13		(16)	18
Adjust investment in subsidiaries for repurchases, issuances and other compensation plans	(10)		(7)					(7)	(3)
Distributions to noncontrolling interests	(2)							0	(2)
Ending balance at Dec. 31, 2020	5,593	1	2,482	$ 0	(477)	(4)	2,802	4,804	789
Retained earnings	2,802
Net income attributable to TDS shareholders	156						156	156
Net income attributable to noncontrolling interests classified as equity	32							0	32
Other comprehensive income (loss)	9					9		9
TDS Common and Series A Common Share dividends	(80)						(80)	(80)
Issuance of TDS Preferred Shares, net of costs	1,074			1,074				1,074
TDS Preferred share dividends	(39)						(39)	(39)
Repurchase of Common Shares	(8)				(8)			(8)
Dividend reinvestment plan	2				3		(1)	2
Incentive and compensation plans	17		22		21		(26)	17
Adjust investment in subsidiaries for repurchases, issuances and other compensation plans	(19)		(8)					(8)	(11)
Distributions to noncontrolling interests	(3)							0	(3)
Ending balance at Dec. 31, 2021	6,734	$ 1	$ 2,496	$ 1,074	$ (461)	$ 5	$ 2,812	$ 5,927	$ 807
Retained earnings	$ 2,812