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Warranty Obligations
 12 Months Ended
Dec. 31, 2017
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 —
 
2017
 
2016
 
2015
Balance, beginning of period
$
66

 
$
56

 
$
47

Acquisitions
6

 


 


Amounts accrued for current period sales
32

 
25

 
26

Adjustments of prior estimates
11

 
26

 
22

Settlements of warranty claims
(42
)
 
(41
)
 
(36
)
Currency impact
3

 


 
(3
)
Balance, end of period
$
76

 
$
66

 
$
56



The Acquisitions line includes approximately $4 related to the acquisition of BFP and BPT that is subject to recovery from the seller.