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Commitments and Contingencies (Tables)
 6 Months Ended
Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]  
Changes in product warranty accrual We warrant numerous products, the terms of which vary widely. In general, we warrant products against defect and specific non-performance. The table below provides the changes in our product warranty accrual.
(in millions)
2018
 
2017
Warranty accrual – January 1
$
82

 
$
99

Net charges for product warranties in the period
13

 
17

Settlement of warranty claims
(24
)
 
(24
)
Foreign currency and other
1

 
2

Warranty accrual - June 30
$
72

 
$
94