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Fair Value Measurements (Table)
12 Months Ended
Dec. 31, 2022
Fair Value Disclosures [Abstract]  
Fair value measurements
UScellular has applied the provisions of fair value accounting for purposes of computing the fair value of financial instruments for disclosure purposes as displayed below.
 Level within the Fair Value HierarchyDecember 31, 2022December 31, 2021
 Book ValueFair ValueBook ValueFair Value
(Dollars in millions)     
Long-term debt
Retail
2$1,500 $899 $1,500 $1,594 
Institutional
2536 395 535 659 
Other
21,208 1,208 746 746