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Variable Interest Entities (Tables)
9 Months Ended
Sep. 30, 2017
Variable Interest Entity, Primary Beneficiary  
Variable Interest Entity [Line Items]  
Schedule of Variable Interest Entities [Table Text Block]
The carrying amounts and classification of assets and liabilities for variable interest entities in our Condensed Consolidated Balance Sheet are as follows:
(Dollars in millions)
September 30, 2017
 
December 31, 2016
Current assets
$
4,317

 
$
2,722

Noncurrent assets
1,675

 
1,334

Total assets
$
5,992

 
$
4,056

 
 
 
 
Current liabilities
$
3,831

 
$
2,422

Noncurrent liabilities
2,013

 
1,636

Total liabilities
$
5,844

 
$
4,058