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Commitments and Contingencies Commitments and Contingencies (Tables)
 3 Months Ended
Mar. 31, 2018
Loss Contingencies [Line Items]  
Schedule of Product Warranty Liability [Table Text Block]
The following table provides a reconciliation of changes in the product warranty and recall claims liability:
 
Three Months Ended March 31
 
2018
 
2017
 
(Dollars in Millions)
Beginning balance
$
49

 
$
55

Accruals for products shipped
5

 
6

Changes in estimates
1

 
3

Specific cause actions
2

 
—

Foreign currency
2

 
1

Settlements
(7
)
 
(13
)
Ending balance
$
52

 
$
52