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Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]  
Product Warranty Reserves
The following table summarizes the changes in total product warranty reserves for the periods presented:
Millions of dollars

2014

2013
Balance at January 1

$
191


$
187

Issuances/accruals during the period

194


204

Settlements made during the period

(206
)

(199
)
Balance at September 30

$
179


$
192

Current portion

$
141


$
147

Non-current portion

38


45

Total

$
179


$
192