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Consolidated Balance Sheet Parenthetical - USD ($)
shares in Millions, $ in Millions
Jun. 30, 2018
Dec. 31, 2017
Accounts receivable    
Customer and agent allowances $ 65 $ 61
Other allowances 2 2
Other intangible assets    
Other intangible assets accumulated amortization $ 155 $ 142
TDS shareholders' equity    
Authorized shares 290 290
Issued shares 133 133
Outstanding shares 112 111
Variable Interest Entities VIEs    
Total VIE assets that can be used to settle only the VIEs' obligations $ 793 $ 765
Total VIE liabilities for which creditors have no recourse $ 17 $ 21
Series A Common Shares    
TDS shareholders' equity    
Authorized shares 25 25
Issued shares 7 7
Outstanding shares 7 7
Par value per share $ 0.01 $ 0.01
Common Shares    
TDS shareholders' equity    
Authorized shares 265 265
Issued shares 126 126
Outstanding shares 105 104
Par value per share $ 0.01 $ 0.01
Treasury shares at cost 21 22