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Certain Relationships And Related Transactions
 12 Months Ended
Dec. 31, 2024
Related Party Transactions [Abstract]  
Certain Relationships and Related Transactions
Note 22 Certain Relationships and Related Transactions
Sidley Austin LLP performs legal services for TDS and its subsidiaries: Walter C. D. Carlson, TDS President and Chief Executive Officer as of February 1, 2025, a trustee and beneficiary of a voting trust that controls TDS, the executive Chair of the Board and member of the Board of Directors of TDS and a director of UScellular, a subsidiary of TDS, was formerly Senior Counsel at Sidley Austin LLP until January 31, 2025. John P. Kelsh, the General Counsel and/or an Assistant Secretary of TDS and certain subsidiaries of TDS is a partner at Sidley Austin LLP. Walter C. D. Carlson did not provide legal services to TDS or its subsidiaries. TDS, UScellular and their subsidiaries incurred legal costs from Sidley Austin LLP of $19 million, $16 million and $8 million in 2024, 2023 and 2022, respectively.
The Audit Committee of the Board of Directors of TDS is responsible for the review and evaluation of all related-party transactions as such term is defined by the rules of the New York Stock Exchange.