XML 39 R20.htm IDEA: XBRL DOCUMENT v3.21.1
Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2021
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 Hierarchy
March 31, 2021December 31, 2020
Book Value
Fair Value
Book Value
Fair Value
(Dollars in millions)
Long-term debt
Retail2$1,917 $1,963 $1,917 $1,962 
Institutional2535 661 535 707 
Other2598 598 106 106