Investments in Unconsolidated Entities (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity method investments:
Capital contributions, loans, advances and adjustments		$ 104	$ 104
Cumulative share of income		2,570	2,417
Cumulative share of distributions		(2,235)	(2,090)
Total equity method investments		439	431
Measurement alternative method investments		4	8
Investments recorded using the net asset value practical expedient		9	0
Total investments in unconsolidated entities		452	439
Assets
Current		1,723	1,605
Total assets	[1]	11,119	10,341
Liabilities and Equity
Current liabilities		1,195	903
Partners’ capital and shareholders’ equity		4,570	4,563	$ 4,426	$ 4,210
Total liabilities and equity	[1]	11,119	10,341
Results of Operations
Revenues		4,169	4,122	4,037
Operating expenses		4,100	3,952	3,864
Operating income		69	170	173
Net income		35	160	233
Equity Method Investments
Assets
Current		1,071	1,223
Noncurrent		6,431	6,129
Total assets		7,502	7,352
Liabilities and Equity
Current liabilities		764	707
Noncurrent liabilities		1,241	1,249
Partners’ capital and shareholders’ equity		5,497	5,396
Total liabilities and equity		7,502	7,352
Results of Operations
Revenues		7,275	7,100	6,677
Operating expenses		5,662	5,130	4,733
Operating income		1,613	1,970	1,944
Other income (expense), net		(16)	15	16
Net income		$ 1,597	$ 1,985	$ 1,960

[1] The consolidated total assets as of December 31, 2022 and 2021, include assets held by consolidated variable interest entities (VIEs) of $1,265 million and $1,482 million, respectively, which are not available to be used to settle the obligations of UScellular. The consolidated total liabilities as of December 31, 2022 and 2021, include certain liabilities of consolidated VIEs of $25 million and $23 million, respectively, for which the creditors of the VIEs have no recourse to the general credit of UScellular. See Note 14 — Variable Interest Entities for additional information.