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Warranty Obligations
 6 Months Ended
Jun. 30, 2019
Product Warranties Disclosures [Abstract]  
Warranty Obligations [Text Block] Warranty Obligations

We record a liability for estimated warranty obligations at the dates our products are sold. We record the liability based on our estimate of costs to settle future claims. Adjustments to our estimated costs at time of sale are made as claim experience and other new information becomes available. Obligations for service campaigns and other occurrences are recognized as adjustments to prior estimates when the obligation is probable and can be reasonably estimated.

Changes in warranty liabilities — 
 
Three Months Ended 
 June 30,
 
Six Months Ended 
 June 30,
 
2019
 
2018
 
2019
 
2018
Balance, beginning of period
$
95

 
$
76

 
$
75

 
$
76

Acquisitions
2

 
1

 
17

 
1

Amounts accrued for current period sales
9

 
8

 
17

 
18

Adjustments of prior estimates
(3
)
 


 
2

 


Settlements of warranty claims
(9
)
 
(8
)
 
(16
)
 
(19
)
Currency impact
1

 
(2
)
 


 
(1
)
Balance, end of period
$
95

 
$
75

 
$
95

 
$
75