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Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]  
Product Warranty Reserves
The following table summarizes the changes in total product warranty and legacy product warranty liability reserves for the three months ended March 31, 2016 and 2015:
 
 
Product Warranty
 
Legacy Product Warranty
 
Total
Millions of dollars

2016

2015
 
2016
 
2015
 
2016
 
2015
Balance at January 1

$
239


$
235

 
$
254

 
$

 
$
493

 
$
235

Issuances/accruals during the period

76


62

 

 

 
76

 
62

Settlements made during the period/other

(67
)

(75
)
 
(37
)
 

 
(104
)
 
(75
)
Balance at March 31

$
248


$
222

 
$
217

 
$

 
$
465

 
$
222

 
 
 
 
 
 
 
 
 
 
 
 
 
Current portion

$
191


$
172

 
$
167

 
$

 
$
358

 
$
172

Non-current portion

57


50

 
50

 

 
107

 
50

Total

$
248


$
222

 
$
217

 
$

 
$
465

 
$
222