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Consolidated Balance Sheet (Parenthetical) - USD ($)
shares in Millions, $ in Millions
Dec. 31, 2019
Dec. 31, 2018
Accounts receivable    
Customers and agents allowances $ 70 $ 66
Other allowances $ 1 $ 2
U.S. Cellular shareholders’ equity    
Authorized shares (in shares) 190 190
Issued shares (in shares) 88 88
Outstanding shares (in shares) 86 86
Par value $ 88 $ 88
Variable Interest Entities VIE's    
Total VIE assets that can be used to settle only the VIEs' obligations 930 868
Total VIE liabilities for which creditors have no recourse $ 22 $ 23
Series A Common Shares    
U.S. Cellular shareholders’ equity    
Authorized shares (in shares) 50 50
Issued shares (in shares) 33 33
Outstanding shares (in shares) 33 33
Par value per share (in dollars per share) $ 1.00 $ 1.00
Par value $ 33 $ 33
Common Shares    
U.S. Cellular shareholders’ equity    
Authorized shares (in shares) 140 140
Issued shares (in shares) 55 55
Outstanding shares (in shares) 53 53
Par value per share (in dollars per share) $ 1 $ 1
Par value $ 55 $ 55
Treasury shares (in shares) 2 2