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Fair Value Measurements (Table)
12 Months Ended
Dec. 31, 2018
Fair Value Disclosures [Abstract]  
Fair value measurements
U.S. Cellular 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
 
December 31, 2018
 
December 31, 2017
 
Book Value
 
Fair Value
 
Book Value
 
Fair Value
(Dollars in millions)
 
 
 
 
 
 
 
 
 
Cash and cash equivalents
1
 
$
580

 
$
580

 
$
352

 
$
352

Short-term investments
1
 
17

 
17

 
50

 
50

Long-term debt
 
 
 
 
 
 
 
 
 
Retail
2
 
917

 
850

 
917

 
939

Institutional
2
 
534

 
531

 
534

 
522

Other
2
 
180

 
180

 
191

 
191